Add m-esr52 at 52.6.0

95 files changed, 13862 insertions, 0 deletions

diff --git a/toolkit/modules/tests/MockDocument.jsm b/toolkit/modules/tests/MockDocument.jsm
new file mode 100644
index 000000000..3cae9bb91
--- /dev/null
+++ b/toolkit/modules/tests/MockDocument.jsm
@@ -0,0 +1,50 @@
+/**
+ * Provides infrastructure for tests that would require mock document.
+ */
+
+"use strict";
+
+this.EXPORTED_SYMBOLS = ["MockDocument"]
+
+const {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components;
+
+Cu.importGlobalProperties(["URL"]);
+
+const MockDocument = {
+  /**
+   * Create a document for the given URL containing the given HTML with the ownerDocument of all <form>s having a mocked location.
+   */
+  createTestDocument(aDocumentURL, aContent = "<form>", aType = "text/html") {
+    let parser = Cc["@mozilla.org/xmlextras/domparser;1"].
+                 createInstance(Ci.nsIDOMParser);
+    parser.init();
+    let parsedDoc = parser.parseFromString(aContent, aType);
+
+    for (let element of parsedDoc.forms) {
+      this.mockOwnerDocumentProperty(element, parsedDoc, aDocumentURL);
+    }
+    return parsedDoc;
+  },
+
+  mockOwnerDocumentProperty(aElement, aDoc, aURL) {
+    // Mock the document.location object so we can unit test without a frame. We use a proxy
+    // instead of just assigning to the property since it's not configurable or writable.
+    let document = new Proxy(aDoc, {
+      get(target, property, receiver) {
+        // document.location is normally null when a document is outside of a "browsing context".
+        // See https://html.spec.whatwg.org/#the-location-interface
+        if (property == "location") {
+          return new URL(aURL);
+        }
+        return target[property];
+      },
+    });
+
+    // Assign element.ownerDocument to the proxy so document.location works.
+    Object.defineProperty(aElement, "ownerDocument", {
+      value: document,
+    });
+  },
+
+};
+
diff --git a/toolkit/modules/tests/PromiseTestUtils.jsm b/toolkit/modules/tests/PromiseTestUtils.jsm
new file mode 100644
index 000000000..d60b785a5
--- /dev/null
+++ b/toolkit/modules/tests/PromiseTestUtils.jsm
@@ -0,0 +1,241 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/*
+ * Detects and reports unhandled rejections during test runs. Test harnesses
+ * will fail tests in this case, unless the test whitelists itself.
+ */
+
+"use strict";
+
+this.EXPORTED_SYMBOLS = [
+  "PromiseTestUtils",
+];
+
+const { classes: Cc, interfaces: Ci, utils: Cu, results: Cr } = Components;
+
+Cu.import("resource://gre/modules/Services.jsm", this);
+
+// Keep "JSMPromise" separate so "Promise" still refers to DOM Promises.
+let JSMPromise = Cu.import("resource://gre/modules/Promise.jsm", {}).Promise;
+
+// For now, we need test harnesses to provide a reference to Assert.jsm.
+let Assert = null;
+
+this.PromiseTestUtils = {
+  /**
+   * Array of objects containing the details of the Promise rejections that are
+   * currently left uncaught. This includes DOM Promise and Promise.jsm. When
+   * rejections in DOM Promises are consumed, they are removed from this list.
+   *
+   * The objects contain at least the following properties:
+   * {
+   *   message: The error message associated with the rejection, if any.
+   *   date: Date object indicating when the rejection was observed.
+   *   id: For DOM Promise only, the Promise ID from PromiseDebugging. This is
+   *       only used for tracking and should not be checked by the callers.
+   *   stack: nsIStackFrame, SavedFrame, or string indicating the stack at the
+   *          time the rejection was triggered. May also be null if the
+   *          rejection was triggered while a script was on the stack.
+   * }
+   */
+  _rejections: [],
+
+  /**
+   * When an uncaught rejection is detected, it is ignored if one of the
+   * functions in this array returns true when called with the rejection details
+   * as its only argument. When a function matches an expected rejection, it is
+   * then removed from the array.
+   */
+  _rejectionIgnoreFns: [],
+
+  /**
+   * Called only by the test infrastructure, registers the rejection observers.
+   *
+   * This should be called only once, and a matching "uninit" call must be made
+   * or the tests will crash on shutdown.
+   */
+  init() {
+    if (this._initialized) {
+      Cu.reportError("This object was already initialized.");
+      return;
+    }
+
+    PromiseDebugging.addUncaughtRejectionObserver(this);
+
+    // Promise.jsm rejections are only reported to this observer when requested,
+    // so we don't have to store a key to remove them when consumed.
+    JSMPromise.Debugging.addUncaughtErrorObserver(
+                            rejection => this._rejections.push(rejection));
+
+    this._initialized = true;
+  },
+  _initialized: false,
+
+  /**
+   * Called only by the test infrastructure, unregisters the observers.
+   */
+  uninit() {
+    if (!this._initialized) {
+      return;
+    }
+
+    PromiseDebugging.removeUncaughtRejectionObserver(this);
+    JSMPromise.Debugging.clearUncaughtErrorObservers();
+
+    this._initialized = false;
+  },
+
+  /**
+   * Called only by the test infrastructure, spins the event loop until the
+   * messages for pending DOM Promise rejections have been processed.
+   */
+  ensureDOMPromiseRejectionsProcessed() {
+    let observed = false;
+    let observer = {
+      onLeftUncaught: promise => {
+        if (PromiseDebugging.getState(promise).reason ===
+            this._ensureDOMPromiseRejectionsProcessedReason) {
+          observed = true;
+        }
+      },
+      onConsumed() {},
+    };
+
+    PromiseDebugging.addUncaughtRejectionObserver(observer);
+    Promise.reject(this._ensureDOMPromiseRejectionsProcessedReason);
+    while (!observed) {
+      Services.tm.mainThread.processNextEvent(true);
+    }
+    PromiseDebugging.removeUncaughtRejectionObserver(observer);
+  },
+  _ensureDOMPromiseRejectionsProcessedReason: {},
+
+  /**
+   * Called only by the tests for PromiseDebugging.addUncaughtRejectionObserver
+   * and for JSMPromise.Debugging, disables the observers in this module.
+   */
+  disableUncaughtRejectionObserverForSelfTest() {
+    this.uninit();
+  },
+
+  /**
+   * Called by tests that have been whitelisted, disables the observers in this
+   * module. For new tests where uncaught rejections are expected, you should
+   * use the more granular expectUncaughtRejection function instead.
+   */
+  thisTestLeaksUncaughtRejectionsAndShouldBeFixed() {
+    this.uninit();
+  },
+
+  /**
+   * Sets or updates the Assert object instance to be used for error reporting.
+   */
+  set Assert(assert) {
+    Assert = assert;
+  },
+
+  // UncaughtRejectionObserver
+  onLeftUncaught(promise) {
+    let message = "(Unable to convert rejection reason to string.)";
+    try {
+      let reason = PromiseDebugging.getState(promise).reason;
+      if (reason === this._ensureDOMPromiseRejectionsProcessedReason) {
+        // Ignore the special promise for ensureDOMPromiseRejectionsProcessed.
+        return;
+      }
+      message = reason.message || ("" + reason);
+    } catch (ex) {}
+
+    // It's important that we don't store any reference to the provided Promise
+    // object or its value after this function returns in order to avoid leaks.
+    this._rejections.push({
+      id: PromiseDebugging.getPromiseID(promise),
+      message,
+      date: new Date(),
+      stack: PromiseDebugging.getRejectionStack(promise),
+    });
+  },
+
+  // UncaughtRejectionObserver
+  onConsumed(promise) {
+    // We don't expect that many unhandled rejections will appear at the same
+    // time, so the algorithm doesn't need to be optimized for that case.
+    let id = PromiseDebugging.getPromiseID(promise);
+    let index = this._rejections.findIndex(rejection => rejection.id == id);
+    // If we get a consumption notification for a rejection that was left
+    // uncaught before this module was initialized, we can safely ignore it.
+    if (index != -1) {
+      this._rejections.splice(index, 1);
+    }
+  },
+
+  /**
+   * Informs the test suite that the test code will generate a Promise rejection
+   * that will still be unhandled when the test file terminates.
+   *
+   * This method must be called once for each instance of Promise that is
+   * expected to be uncaught, even if the rejection reason is the same for each
+   * instance.
+   *
+   * If the expected rejection does not occur, the test will fail.
+   *
+   * @param regExpOrCheckFn
+   *        This can either be a regular expression that should match the error
+   *        message of the rejection, or a check function that is invoked with
+   *        the rejection details object as its first argument.
+   */
+  expectUncaughtRejection(regExpOrCheckFn) {
+    let checkFn = !("test" in regExpOrCheckFn) ? regExpOrCheckFn :
+                  rejection => regExpOrCheckFn.test(rejection.message);
+    this._rejectionIgnoreFns.push(checkFn);
+  },
+
+  /**
+   * Fails the test if there are any uncaught rejections at this time that have
+   * not been whitelisted using expectUncaughtRejection.
+   *
+   * Depending on the configuration of the test suite, this function might only
+   * report the details of the first uncaught rejection that was generated.
+   *
+   * This is called by the test suite at the end of each test function.
+   */
+  assertNoUncaughtRejections() {
+    // Ask Promise.jsm to report all uncaught rejections to the observer now.
+    JSMPromise.Debugging.flushUncaughtErrors();
+
+    // If there is any uncaught rejection left at this point, the test fails.
+    while (this._rejections.length > 0) {
+      let rejection = this._rejections.shift();
+
+      // If one of the ignore functions matches, ignore the rejection, then
+      // remove the function so that each function only matches one rejection.
+      let index = this._rejectionIgnoreFns.findIndex(f => f(rejection));
+      if (index != -1) {
+        this._rejectionIgnoreFns.splice(index, 1);
+        continue;
+      }
+
+      // Report the error. This operation can throw an exception, depending on
+      // the configuration of the test suite that handles the assertion.
+      Assert.ok(false,
+                `A promise chain failed to handle a rejection:` +
+                ` ${rejection.message} - rejection date: ${rejection.date}`+
+                ` - stack: ${rejection.stack}`);
+    }
+  },
+
+  /**
+   * Fails the test if any rejection indicated by expectUncaughtRejection has
+   * not yet been reported at this time.
+   *
+   * This is called by the test suite at the end of each test file.
+   */
+  assertNoMoreExpectedRejections() {
+    // Only log this condition is there is a failure.
+    if (this._rejectionIgnoreFns.length > 0) {
+      Assert.equal(this._rejectionIgnoreFns.length, 0,
+             "Unable to find a rejection expected by expectUncaughtRejection.");
+    }
+  },
+};
diff --git a/toolkit/modules/tests/browser/.eslintrc.js b/toolkit/modules/tests/browser/.eslintrc.js
new file mode 100644
index 000000000..c764b133d
--- /dev/null
+++ b/toolkit/modules/tests/browser/.eslintrc.js
@@ -0,0 +1,7 @@
+"use strict";
+
+module.exports = {
+  "extends": [
+    "../../../../testing/mochitest/browser.eslintrc.js"
+  ]
+};
diff --git a/toolkit/modules/tests/browser/WebRequest_dynamic.sjs b/toolkit/modules/tests/browser/WebRequest_dynamic.sjs
new file mode 100644
index 000000000..7b34a377d
--- /dev/null
+++ b/toolkit/modules/tests/browser/WebRequest_dynamic.sjs
@@ -0,0 +1,13 @@
+function handleRequest(aRequest, aResponse) {
+  aResponse.setStatusLine(aRequest.httpVersion, 200);
+  if (aRequest.hasHeader('Cookie')) {
+    let value = aRequest.getHeader("Cookie");
+    if (value == "blinky=1") {
+      aResponse.setHeader("Set-Cookie", "dinky=1");
+    }
+    aResponse.write("cookie-present");
+  } else {
+    aResponse.setHeader("Set-Cookie", "foopy=1");
+    aResponse.write("cookie-not-present");
+  }
+}
diff --git a/toolkit/modules/tests/browser/WebRequest_redirection.sjs b/toolkit/modules/tests/browser/WebRequest_redirection.sjs
new file mode 100644
index 000000000..370ecd213
--- /dev/null
+++ b/toolkit/modules/tests/browser/WebRequest_redirection.sjs
@@ -0,0 +1,4 @@
+function handleRequest(aRequest, aResponse) {
+  aResponse.setStatusLine(aRequest.httpVersion, 302);
+  aResponse.setHeader("Location", "./dummy_page.html");
+}
diff --git a/toolkit/modules/tests/browser/browser.ini b/toolkit/modules/tests/browser/browser.ini
new file mode 100644
index 000000000..e82feaa42
--- /dev/null
+++ b/toolkit/modules/tests/browser/browser.ini
@@ -0,0 +1,41 @@
+[DEFAULT]
+support-files =
+  dummy_page.html
+  metadata_*.html
+  testremotepagemanager.html
+  file_WebNavigation_page1.html
+  file_WebNavigation_page2.html
+  file_WebNavigation_page3.html
+  file_WebRequest_page1.html
+  file_WebRequest_page2.html
+  file_image_good.png
+  file_image_bad.png
+  file_image_redirect.png
+  file_style_good.css
+  file_style_bad.css
+  file_style_redirect.css
+  file_script_good.js
+  file_script_bad.js
+  file_script_redirect.js
+  file_script_xhr.js
+  WebRequest_dynamic.sjs
+  WebRequest_redirection.sjs
+
+[browser_AsyncPrefs.js]
+[browser_Battery.js]
+[browser_Deprecated.js]
+[browser_Finder.js]
+[browser_Finder_hidden_textarea.js]
+[browser_FinderHighlighter.js]
+skip-if = debug || os = "linux"
+support-files = file_FinderSample.html
+[browser_Geometry.js]
+[browser_InlineSpellChecker.js]
+[browser_WebNavigation.js]
+[browser_WebRequest.js]
+[browser_WebRequest_cookies.js]
+[browser_WebRequest_filtering.js]
+[browser_PageMetadata.js]
+[browser_PromiseMessage.js]
+[browser_RemotePageManager.js]
+[browser_Troubleshoot.js]
diff --git a/toolkit/modules/tests/browser/browser_AsyncPrefs.js b/toolkit/modules/tests/browser/browser_AsyncPrefs.js
new file mode 100644
index 000000000..1d20a3789
--- /dev/null
+++ b/toolkit/modules/tests/browser/browser_AsyncPrefs.js
@@ -0,0 +1,97 @@
+"use strict";
+
+const kWhiteListedBool = "testing.allowed-prefs.some-bool-pref";
+const kWhiteListedChar = "testing.allowed-prefs.some-char-pref";
+const kWhiteListedInt = "testing.allowed-prefs.some-int-pref";
+
+function resetPrefs() {
+  for (let pref of [kWhiteListedBool, kWhiteListedChar, kWhiteListedBool]) {
+    Services.prefs.clearUserPref(pref);
+  }
+}
+
+registerCleanupFunction(resetPrefs);
+
+Services.prefs.getDefaultBranch("testing.allowed-prefs.").setBoolPref("some-bool-pref", false);
+Services.prefs.getDefaultBranch("testing.allowed-prefs.").setCharPref("some-char-pref", "");
+Services.prefs.getDefaultBranch("testing.allowed-prefs.").setIntPref("some-int-pref", 0);
+
+function* runTest() {
+  let {AsyncPrefs} = Cu.import("resource://gre/modules/AsyncPrefs.jsm", {});
+  const kInChildProcess = Services.appinfo.processType == Services.appinfo.PROCESS_TYPE_CONTENT;
+
+  // Need to define these again because when run in a content task we have no scope access.
+  const kNotWhiteListed = "some.pref.thats.not.whitelisted";
+  const kWhiteListedBool = "testing.allowed-prefs.some-bool-pref";
+  const kWhiteListedChar = "testing.allowed-prefs.some-char-pref";
+  const kWhiteListedInt = "testing.allowed-prefs.some-int-pref";
+
+  const procDesc = kInChildProcess ? "child process" : "parent process";
+
+  const valueResultMap = [
+    [true, "Bool"],
+    [false, "Bool"],
+    [10, "Int"],
+    [-1, "Int"],
+    ["", "Char"],
+    ["stuff", "Char"],
+    [[], false],
+    [{}, false],
+    [BrowserUtils.makeURI("http://mozilla.org/"), false],
+  ];
+
+  const prefMap = [
+    ["Bool", kWhiteListedBool],
+    ["Char", kWhiteListedChar],
+    ["Int", kWhiteListedInt],
+  ];
+
+  function doesFail(pref, value) {
+    let msg = `Should not succeed setting ${pref} to ${value} in ${procDesc}`;
+    return AsyncPrefs.set(pref, value).then(() => ok(false, msg), error => ok(true, msg + "; " + error));
+  }
+
+  function doesWork(pref, value) {
+    let msg = `Should be able to set ${pref} to ${value} in ${procDesc}`;
+    return AsyncPrefs.set(pref, value).then(() => ok(true, msg), error => ok(false, msg + "; " + error));
+  }
+
+  function doReset(pref) {
+    let msg = `Should be able to reset ${pref} in ${procDesc}`;
+    return AsyncPrefs.reset(pref).then(() => ok(true, msg), () => ok(false, msg));
+  }
+
+  for (let [val, ] of valueResultMap) {
+    yield doesFail(kNotWhiteListed, val);
+    is(Services.prefs.prefHasUserValue(kNotWhiteListed), false, "Pref shouldn't get changed");
+  }
+
+  let resetMsg = `Should not succeed resetting ${kNotWhiteListed} in ${procDesc}`;
+  AsyncPrefs.reset(kNotWhiteListed).then(() => ok(false, resetMsg), error => ok(true, resetMsg + "; " + error));
+
+  for (let [type, pref] of prefMap) {
+    for (let [val, result] of valueResultMap) {
+      if (result == type) {
+        yield doesWork(pref, val);
+        is(Services.prefs["get" + type + "Pref"](pref), val, "Pref should have been updated");
+        yield doReset(pref);
+      } else {
+        yield doesFail(pref, val);
+        is(Services.prefs.prefHasUserValue(pref), false, `Pref ${pref} shouldn't get changed`);
+      }
+    }
+  }
+}
+
+add_task(function* runInParent() {
+  yield runTest();
+  resetPrefs();
+});
+
+if (gMultiProcessBrowser) {
+  add_task(function* runInChild() {
+    ok(gBrowser.selectedBrowser.isRemoteBrowser, "Should actually run this in child process");
+    yield ContentTask.spawn(gBrowser.selectedBrowser, null, runTest);
+    resetPrefs();
+  });
+}
diff --git a/toolkit/modules/tests/browser/browser_Battery.js b/toolkit/modules/tests/browser/browser_Battery.js
new file mode 100644
index 000000000..2d3ba5da1
--- /dev/null
+++ b/toolkit/modules/tests/browser/browser_Battery.js
@@ -0,0 +1,51 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+var imported = Components.utils.import("resource://gre/modules/Battery.jsm", this);
+Cu.import("resource://gre/modules/Services.jsm", this);
+
+function test() {
+  waitForExplicitFinish();
+
+  is(imported.Debugging.fake, false, "Battery spoofing is initially false")
+
+  GetBattery().then(function (battery) {
+    for (let k of ["charging", "chargingTime", "dischargingTime", "level"]) {
+      let backup = battery[k];
+      try {
+        battery[k] = "__magic__";
+      } catch (e) {
+        // We are testing that we cannot set battery to new values
+        // when "use strict" is enabled, this throws a TypeError
+        if (e.name != "TypeError")
+          throw e;
+      }
+      is(battery[k], backup, "Setting battery " + k + " preference without spoofing enabled should fail");
+    }
+
+    imported.Debugging.fake = true;
+
+    // reload again to get the fake one
+    GetBattery().then(function (battery) {
+      battery.charging = true;
+      battery.chargingTime = 100;
+      battery.level = 0.5;
+      ok(battery.charging, "Test for charging setter");
+      is(battery.chargingTime, 100, "Test for chargingTime setter");
+      is(battery.level, 0.5, "Test for level setter");
+
+      battery.charging = false;
+      battery.dischargingTime = 50;
+      battery.level = 0.7;
+      ok(!battery.charging, "Test for charging setter");
+      is(battery.dischargingTime, 50, "Test for dischargingTime setter");
+      is(battery.level, 0.7, "Test for level setter");
+
+      // Resetting the value to make the test run successful
+      // for multiple runs in same browser session.
+      imported.Debugging.fake = false;
+      finish();
+    });
+  });
+}
diff --git a/toolkit/modules/tests/browser/browser_Deprecated.js b/toolkit/modules/tests/browser/browser_Deprecated.js
new file mode 100644
index 000000000..3217bdd22
--- /dev/null
+++ b/toolkit/modules/tests/browser/browser_Deprecated.js
@@ -0,0 +1,157 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+var Ci = Components.interfaces;
+var Cu = Components.utils;
+const PREF_DEPRECATION_WARNINGS = "devtools.errorconsole.deprecation_warnings";
+
+Cu.import("resource://gre/modules/Services.jsm", this);
+Cu.import("resource://gre/modules/Deprecated.jsm", this);
+
+// Using this named functions to test deprecation and the properly logged
+// callstacks.
+function basicDeprecatedFunction () {
+  Deprecated.warning("this method is deprecated.", "http://example.com");
+  return true;
+}
+
+function deprecationFunctionBogusCallstack () {
+  Deprecated.warning("this method is deprecated.", "http://example.com", {
+    caller: {}
+  });
+  return true;
+}
+
+function deprecationFunctionCustomCallstack () {
+  // Get the nsIStackFrame that will contain the name of this function.
+  function getStack () {
+    return Components.stack;
+  }
+  Deprecated.warning("this method is deprecated.", "http://example.com",
+    getStack());
+  return true;
+}
+
+var tests = [
+// Test deprecation warning without passing the callstack.
+{
+  deprecatedFunction: basicDeprecatedFunction,
+  expectedObservation: function (aMessage) {
+    testAMessage(aMessage);
+    ok(aMessage.errorMessage.indexOf("basicDeprecatedFunction") > 0,
+      "Callstack is correctly logged.");
+  }
+},
+// Test a reported error when URL to documentation is not passed.
+{
+  deprecatedFunction: function () {
+    Deprecated.warning("this method is deprecated.");
+    return true;
+  },
+  expectedObservation: function (aMessage) {
+    ok(aMessage.errorMessage.indexOf("must provide a URL") > 0,
+      "Deprecation warning logged an empty URL argument.");
+  }
+},
+// Test deprecation with a bogus callstack passed as an argument (it will be
+// replaced with the current call stack).
+{
+  deprecatedFunction: deprecationFunctionBogusCallstack,
+  expectedObservation: function (aMessage) {
+    testAMessage(aMessage);
+    ok(aMessage.errorMessage.indexOf("deprecationFunctionBogusCallstack") > 0,
+      "Callstack is correctly logged.");
+  }
+},
+// When pref is unset Deprecated.warning should not log anything.
+{
+  deprecatedFunction: basicDeprecatedFunction,
+  expectedObservation: null,
+  // Set pref to false.
+  logWarnings: false
+},
+// Test deprecation with a valid custom callstack passed as an argument.
+{
+  deprecatedFunction: deprecationFunctionCustomCallstack,
+  expectedObservation: function (aMessage) {
+    testAMessage(aMessage);
+    ok(aMessage.errorMessage.indexOf("deprecationFunctionCustomCallstack") > 0,
+      "Callstack is correctly logged.");
+  },
+  // Set pref to true.
+  logWarnings: true
+}];
+
+// Which test are we running now?
+var idx = -1;
+
+function test() {
+  waitForExplicitFinish();
+
+  // Check if Deprecated is loaded.
+  ok(Deprecated, "Deprecated object exists");
+
+  nextTest();
+}
+
+// Test Consle Message attributes.
+function testAMessage (aMessage) {
+  ok(aMessage.errorMessage.indexOf("DEPRECATION WARNING: " +
+    "this method is deprecated.") === 0,
+    "Deprecation is correctly logged.");
+  ok(aMessage.errorMessage.indexOf("http://example.com") > 0,
+    "URL is correctly logged.");
+}
+
+function nextTest() {
+  idx++;
+
+  if (idx == tests.length) {
+    finish();
+    return;
+  }
+
+  info("Running test #" + idx);
+  let test = tests[idx];
+
+  // Deprecation warnings will be logged only when the preference is set.
+  if (typeof test.logWarnings !== "undefined") {
+    Services.prefs.setBoolPref(PREF_DEPRECATION_WARNINGS, test.logWarnings);
+  }
+
+  // Create a console listener.
+  let consoleListener = {
+    observe: function (aMessage) {
+      // Ignore unexpected messages.
+      if (!(aMessage instanceof Ci.nsIScriptError)) {
+        return;
+      }
+      if (aMessage.errorMessage.indexOf("DEPRECATION WARNING: ") < 0 &&
+          aMessage.errorMessage.indexOf("must provide a URL") < 0) {
+        return;
+      }
+      ok(aMessage instanceof Ci.nsIScriptError,
+        "Deprecation log message is an instance of type nsIScriptError.");
+
+
+      if (test.expectedObservation === null) {
+        ok(false, "Deprecated warning not expected");
+      }
+      else {
+        test.expectedObservation(aMessage);
+      }
+
+      Services.console.unregisterListener(consoleListener);
+      executeSoon(nextTest);
+    }
+  };
+  Services.console.registerListener(consoleListener);
+  test.deprecatedFunction();
+  if (test.expectedObservation === null) {
+    executeSoon(function() {
+      Services.console.unregisterListener(consoleListener);
+      executeSoon(nextTest);
+    });
+  }
+}
diff --git a/toolkit/modules/tests/browser/browser_Finder.js b/toolkit/modules/tests/browser/browser_Finder.js
new file mode 100644
index 000000000..4dfd921d0
--- /dev/null
+++ b/toolkit/modules/tests/browser/browser_Finder.js
@@ -0,0 +1,62 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+var Ci = Components.interfaces;
+
+add_task(function* () {
+  const url = "data:text/html;base64," +
+              btoa("<body><iframe srcdoc=\"content\"/></iframe>" +
+                   "<a href=\"http://test.com\">test link</a>");
+  let tab = yield BrowserTestUtils.openNewForegroundTab(gBrowser, url);
+
+  let finder = tab.linkedBrowser.finder;
+  let listener = {
+    onFindResult: function () {
+      ok(false, "onFindResult callback wasn't replaced");
+    },
+    onHighlightFinished: function () {
+      ok(false, "onHighlightFinished callback wasn't replaced");
+    }
+  };
+  finder.addResultListener(listener);
+
+  function waitForFind(which = "onFindResult") {
+    return new Promise(resolve => {
+      listener[which] = resolve;
+    })
+  }
+
+  let promiseFind = waitForFind("onHighlightFinished");
+  finder.highlight(true, "content");
+  let findResult = yield promiseFind;
+  Assert.ok(findResult.found, "should find string");
+
+  promiseFind = waitForFind("onHighlightFinished");
+  finder.highlight(true, "Bla");
+  findResult = yield promiseFind;
+  Assert.ok(!findResult.found, "should not find string");
+
+  // Search only for links and draw outlines.
+  promiseFind = waitForFind();
+  finder.fastFind("test link", true, true);
+  findResult = yield promiseFind;
+  is(findResult.result, Ci.nsITypeAheadFind.FIND_FOUND, "should find link");
+
+  yield ContentTask.spawn(tab.linkedBrowser, {}, function* (arg) {
+    Assert.ok(!!content.document.getElementsByTagName("a")[0].style.outline, "outline set");
+  });
+
+  // Just a simple search for "test link".
+  promiseFind = waitForFind();
+  finder.fastFind("test link", false, false);
+  findResult = yield promiseFind;
+  is(findResult.result, Ci.nsITypeAheadFind.FIND_FOUND, "should find link again");
+
+  yield ContentTask.spawn(tab.linkedBrowser, {}, function* (arg) {
+    Assert.ok(!content.document.getElementsByTagName("a")[0].style.outline, "outline not set");
+  });
+
+  finder.removeResultListener(listener);
+  gBrowser.removeTab(tab);
+});
diff --git a/toolkit/modules/tests/browser/browser_FinderHighlighter.js b/toolkit/modules/tests/browser/browser_FinderHighlighter.js
new file mode 100644
index 000000000..cd7eefa11
--- /dev/null
+++ b/toolkit/modules/tests/browser/browser_FinderHighlighter.js
@@ -0,0 +1,460 @@
+"use strict";
+
+Cu.import("resource://testing-common/BrowserTestUtils.jsm", this);
+Cu.import("resource://testing-common/ContentTask.jsm", this);
+Cu.import("resource://gre/modules/Promise.jsm", this);
+Cu.import("resource://gre/modules/Services.jsm", this);
+Cu.import("resource://gre/modules/Task.jsm", this);
+Cu.import("resource://gre/modules/Timer.jsm", this);
+Cu.import("resource://gre/modules/AppConstants.jsm");
+
+const kHighlightAllPref = "findbar.highlightAll";
+const kPrefModalHighlight = "findbar.modalHighlight";
+const kFixtureBaseURL = "https://example.com/browser/toolkit/modules/tests/browser/";
+const kIteratorTimeout = Services.prefs.getIntPref("findbar.iteratorTimeout");
+
+function promiseOpenFindbar(findbar) {
+  findbar.onFindCommand()
+  return gFindBar._startFindDeferred && gFindBar._startFindDeferred.promise;
+}
+
+function promiseFindResult(findbar, str = null) {
+  let highlightFinished = false;
+  let findFinished = false;
+  return new Promise(resolve => {
+    let listener = {
+      onFindResult({ searchString }) {
+        if (str !== null && str != searchString) {
+          return;
+        }
+        findFinished = true;
+        if (highlightFinished) {
+          findbar.browser.finder.removeResultListener(listener);
+          resolve();
+        }
+      },
+      onHighlightFinished() {
+        highlightFinished = true;
+        if (findFinished) {
+          findbar.browser.finder.removeResultListener(listener);
+          resolve();
+        }
+      },
+      onMatchesCountResult: () => {}
+    };
+    findbar.browser.finder.addResultListener(listener);
+  });
+}
+
+function promiseEnterStringIntoFindField(findbar, str) {
+  let promise = promiseFindResult(findbar, str);
+  for (let i = 0; i < str.length; i++) {
+    let event = document.createEvent("KeyboardEvent");
+    event.initKeyEvent("keypress", true, true, null, false, false,
+                       false, false, 0, str.charCodeAt(i));
+    findbar._findField.inputField.dispatchEvent(event);
+  }
+  return promise;
+}
+
+function promiseTestHighlighterOutput(browser, word, expectedResult, extraTest = () => {}) {
+  return ContentTask.spawn(browser, { word, expectedResult, extraTest: extraTest.toSource() },
+    function* ({ word, expectedResult, extraTest }) {
+    Cu.import("resource://gre/modules/Timer.jsm", this);
+
+    return new Promise((resolve, reject) => {
+      let stubbed = {};
+      let callCounts = {
+        insertCalls: [],
+        removeCalls: []
+      };
+      let lastMaskNode, lastOutlineNode;
+      let rects = [];
+
+      // Amount of milliseconds to wait after the last time one of our stubs
+      // was called.
+      const kTimeoutMs = 1000;
+      // The initial timeout may wait for a while for results to come in.
+      let timeout = setTimeout(() => finish(false, "Timeout"), kTimeoutMs * 5);
+
+      function finish(ok = true, message = "finished with error") {
+        // Restore the functions we stubbed out.
+        try {
+          content.document.insertAnonymousContent = stubbed.insert;
+          content.document.removeAnonymousContent = stubbed.remove;
+        } catch (ex) {}
+        stubbed = {};
+        clearTimeout(timeout);
+
+        if (expectedResult.rectCount !== 0)
+          Assert.ok(ok, message);
+
+        Assert.greaterOrEqual(callCounts.insertCalls.length, expectedResult.insertCalls[0],
+          `Min. insert calls should match for '${word}'.`);
+        Assert.lessOrEqual(callCounts.insertCalls.length, expectedResult.insertCalls[1],
+          `Max. insert calls should match for '${word}'.`);
+        Assert.greaterOrEqual(callCounts.removeCalls.length, expectedResult.removeCalls[0],
+          `Min. remove calls should match for '${word}'.`);
+        Assert.lessOrEqual(callCounts.removeCalls.length, expectedResult.removeCalls[1],
+          `Max. remove calls should match for '${word}'.`);
+
+        // We reached the amount of calls we expected, so now we can check
+        // the amount of rects.
+        if (!lastMaskNode && expectedResult.rectCount !== 0) {
+          Assert.ok(false, `No mask node found, but expected ${expectedResult.rectCount} rects.`);
+        }
+
+        Assert.equal(rects.length, expectedResult.rectCount,
+          `Amount of inserted rects should match for '${word}'.`);
+
+        // Allow more specific assertions to be tested in `extraTest`.
+        extraTest = eval(extraTest);
+        extraTest(lastMaskNode, lastOutlineNode, rects);
+
+        resolve();
+      }
+
+      function stubAnonymousContentNode(domNode, anonNode) {
+        let originals = [anonNode.setTextContentForElement,
+          anonNode.setAttributeForElement, anonNode.removeAttributeForElement,
+          anonNode.setCutoutRectsForElement];
+        anonNode.setTextContentForElement = (id, text) => {
+          try {
+            (domNode.querySelector("#" + id) || domNode).textContent = text;
+          } catch (ex) {}
+          return originals[0].call(anonNode, id, text);
+        };
+        anonNode.setAttributeForElement = (id, attrName, attrValue) => {
+          try {
+            (domNode.querySelector("#" + id) || domNode).setAttribute(attrName, attrValue);
+          } catch (ex) {}
+          return originals[1].call(anonNode, id, attrName, attrValue);
+        };
+        anonNode.removeAttributeForElement = (id, attrName) => {
+          try {
+            let node = domNode.querySelector("#" + id) || domNode;
+            if (node.hasAttribute(attrName))
+              node.removeAttribute(attrName);
+          } catch (ex) {}
+          return originals[2].call(anonNode, id, attrName);
+        };
+        anonNode.setCutoutRectsForElement = (id, cutoutRects) => {
+          rects = cutoutRects;
+          return originals[3].call(anonNode, id, cutoutRects);
+        };
+      }
+
+      // Create a function that will stub the original version and collects
+      // the arguments so we can check the results later.
+      function stub(which) {
+        stubbed[which] = content.document[which + "AnonymousContent"];
+        let prop = which + "Calls";
+        return function(node) {
+          callCounts[prop].push(node);
+          if (which == "insert") {
+            if (node.outerHTML.indexOf("outlineMask") > -1)
+              lastMaskNode = node;
+            else
+              lastOutlineNode = node;
+          }
+          clearTimeout(timeout);
+          timeout = setTimeout(() => {
+            finish();
+          }, kTimeoutMs);
+          let res = stubbed[which].call(content.document, node);
+          if (which == "insert")
+            stubAnonymousContentNode(node, res);
+          return res;
+        };
+      }
+      content.document.insertAnonymousContent = stub("insert");
+      content.document.removeAnonymousContent = stub("remove");
+    });
+  });
+}
+
+add_task(function* setup() {
+  yield SpecialPowers.pushPrefEnv({ set: [
+    [kHighlightAllPref, true],
+    [kPrefModalHighlight, true]
+  ]});
+});
+
+// Test the results of modal highlighting, which is on by default.
+add_task(function* testModalResults() {
+  let tests = new Map([
+    ["Roland", {
+      rectCount: 2,
+      insertCalls: [2, 4],
+      removeCalls: [0, 1]
+    }],
+    ["their law might propagate their kind", {
+      rectCount: 2,
+      insertCalls: [5, 6],
+      removeCalls: [4, 5],
+      extraTest: function(maskNode, outlineNode, rects) {
+        Assert.equal(outlineNode.getElementsByTagName("div").length, 2,
+          "There should be multiple rects drawn");
+      }
+    }],
+    ["ro", {
+      rectCount: 41,
+      insertCalls: [1, 4],
+      removeCalls: [1, 3]
+    }],
+    ["new", {
+      rectCount: 2,
+      insertCalls: [1, 4],
+      removeCalls: [0, 2]
+    }],
+    ["o", {
+      rectCount: 492,
+      insertCalls: [1, 4],
+      removeCalls: [0, 2]
+    }]
+  ]);
+  let url = kFixtureBaseURL + "file_FinderSample.html";
+  yield BrowserTestUtils.withNewTab(url, function* (browser) {
+    let findbar = gBrowser.getFindBar();
+
+    for (let [word, expectedResult] of tests) {
+      yield promiseOpenFindbar(findbar);
+      Assert.ok(!findbar.hidden, "Findbar should be open now.");
+
+      let timeout = kIteratorTimeout;
+      if (word.length == 1)
+        timeout *= 4;
+      else if (word.length == 2)
+        timeout *= 2;
+      yield new Promise(resolve => setTimeout(resolve, timeout));
+      let promise = promiseTestHighlighterOutput(browser, word, expectedResult,
+        expectedResult.extraTest);
+      yield promiseEnterStringIntoFindField(findbar, word);
+      yield promise;
+
+      findbar.close(true);
+    }
+  });
+});
+
+// Test if runtime switching of highlight modes between modal and non-modal works
+// as expected.
+add_task(function* testModalSwitching() {
+  let url = kFixtureBaseURL + "file_FinderSample.html";
+  yield BrowserTestUtils.withNewTab(url, function* (browser) {
+    let findbar = gBrowser.getFindBar();
+
+    yield promiseOpenFindbar(findbar);
+    Assert.ok(!findbar.hidden, "Findbar should be open now.");
+
+    let word = "Roland";
+    let expectedResult = {
+      rectCount: 2,
+      insertCalls: [2, 4],
+      removeCalls: [0, 1]
+    };
+    let promise = promiseTestHighlighterOutput(browser, word, expectedResult);
+    yield promiseEnterStringIntoFindField(findbar, word);
+    yield promise;
+
+    yield SpecialPowers.pushPrefEnv({ "set": [[ kPrefModalHighlight, false ]] });
+
+    expectedResult = {
+      rectCount: 0,
+      insertCalls: [0, 0],
+      removeCalls: [0, 0]
+    };
+    promise = promiseTestHighlighterOutput(browser, word, expectedResult);
+    findbar.clear();
+    yield promiseEnterStringIntoFindField(findbar, word);
+    yield promise;
+
+    findbar.close(true);
+  });
+
+  yield SpecialPowers.pushPrefEnv({ "set": [[ kPrefModalHighlight, true ]] });
+});
+
+// Test if highlighting a dark page is detected properly.
+add_task(function* testDarkPageDetection() {
+  let url = kFixtureBaseURL + "file_FinderSample.html";
+  yield BrowserTestUtils.withNewTab(url, function* (browser) {
+    let findbar = gBrowser.getFindBar();
+
+    yield promiseOpenFindbar(findbar);
+
+    let word = "Roland";
+    let expectedResult = {
+      rectCount: 2,
+      insertCalls: [1, 3],
+      removeCalls: [0, 1]
+    };
+    let promise = promiseTestHighlighterOutput(browser, word, expectedResult, function(node) {
+      Assert.ok(node.style.background.startsWith("rgba(0, 0, 0"),
+        "White HTML page should have a black background color set for the mask");
+    });
+    yield promiseEnterStringIntoFindField(findbar, word);
+    yield promise;
+
+    findbar.close(true);
+  });
+
+  yield BrowserTestUtils.withNewTab(url, function* (browser) {
+    let findbar = gBrowser.getFindBar();
+
+    yield promiseOpenFindbar(findbar);
+
+    let word = "Roland";
+    let expectedResult = {
+      rectCount: 2,
+      insertCalls: [2, 4],
+      removeCalls: [0, 1]
+    };
+
+    yield ContentTask.spawn(browser, null, function* () {
+      let dwu = content.QueryInterface(Ci.nsIInterfaceRequestor)
+        .getInterface(Ci.nsIDOMWindowUtils);
+      let uri = "data:text/css;charset=utf-8," + encodeURIComponent(`
+        body {
+          background: maroon radial-gradient(circle, #a01010 0%, #800000 80%) center center / cover no-repeat;
+          color: white;
+        }`);
+      try {
+        dwu.loadSheetUsingURIString(uri, dwu.USER_SHEET);
+      } catch (e) {}
+    });
+
+    let promise = promiseTestHighlighterOutput(browser, word, expectedResult, node => {
+      Assert.ok(node.style.background.startsWith("rgba(255, 255, 255"),
+        "Dark HTML page should have a white background color set for the mask");
+    });
+    yield promiseEnterStringIntoFindField(findbar, word);
+    yield promise;
+
+    findbar.close(true);
+  });
+});
+
+add_task(function* testHighlightAllToggle() {
+  let url = kFixtureBaseURL + "file_FinderSample.html";
+  yield BrowserTestUtils.withNewTab(url, function* (browser) {
+    let findbar = gBrowser.getFindBar();
+
+    yield promiseOpenFindbar(findbar);
+
+    let word = "Roland";
+    let expectedResult = {
+      rectCount: 2,
+      insertCalls: [2, 4],
+      removeCalls: [0, 1]
+    };
+    let promise = promiseTestHighlighterOutput(browser, word, expectedResult);
+    yield promiseEnterStringIntoFindField(findbar, word);
+    yield promise;
+
+    // We now know we have multiple rectangles highlighted, so it's a good time
+    // to flip the pref.
+    expectedResult = {
+      rectCount: 0,
+      insertCalls: [0, 1],
+      removeCalls: [0, 1]
+    };
+    promise = promiseTestHighlighterOutput(browser, word, expectedResult);
+    yield SpecialPowers.pushPrefEnv({ "set": [[ kHighlightAllPref, false ]] });
+    yield promise;
+
+    // For posterity, let's switch back.
+    expectedResult = {
+      rectCount: 2,
+      insertCalls: [1, 3],
+      removeCalls: [0, 1]
+    };
+    promise = promiseTestHighlighterOutput(browser, word, expectedResult);
+    yield SpecialPowers.pushPrefEnv({ "set": [[ kHighlightAllPref, true ]] });
+    yield promise;
+  });
+});
+
+add_task(function* testXMLDocument() {
+  let url = "data:text/xml;charset=utf-8," + encodeURIComponent(`<?xml version="1.0"?>
+<result>
+  <Title>Example</Title>
+  <Error>Error</Error>
+</result>`);
+  yield BrowserTestUtils.withNewTab(url, function* (browser) {
+    let findbar = gBrowser.getFindBar();
+
+    yield promiseOpenFindbar(findbar);
+
+    let word = "Example";
+    let expectedResult = {
+      rectCount: 0,
+      insertCalls: [1, 4],
+      removeCalls: [0, 1]
+    };
+    let promise = promiseTestHighlighterOutput(browser, word, expectedResult);
+    yield promiseEnterStringIntoFindField(findbar, word);
+    yield promise;
+
+    findbar.close(true);
+  });
+});
+
+add_task(function* testHideOnLocationChange() {
+  let url = kFixtureBaseURL + "file_FinderSample.html";
+  let tab = yield BrowserTestUtils.openNewForegroundTab(gBrowser, url);
+  let browser = tab.linkedBrowser;
+  let findbar = gBrowser.getFindBar();
+
+  yield promiseOpenFindbar(findbar);
+
+  let word = "Roland";
+  let expectedResult = {
+    rectCount: 2,
+    insertCalls: [2, 4],
+    removeCalls: [0, 1]
+  };
+  let promise = promiseTestHighlighterOutput(browser, word, expectedResult);
+  yield promiseEnterStringIntoFindField(findbar, word);
+  yield promise;
+
+  // Now we try to navigate away! (Using the same page)
+  promise = promiseTestHighlighterOutput(browser, word, {
+    rectCount: 0,
+    insertCalls: [0, 0],
+    removeCalls: [1, 2]
+  });
+  yield BrowserTestUtils.loadURI(browser, url);
+  yield promise;
+
+  yield BrowserTestUtils.removeTab(tab);
+});
+
+add_task(function* testHideOnClear() {
+  let url = kFixtureBaseURL + "file_FinderSample.html";
+  yield BrowserTestUtils.withNewTab(url, function* (browser) {
+    let findbar = gBrowser.getFindBar();
+    yield promiseOpenFindbar(findbar);
+
+    let word = "Roland";
+    let expectedResult = {
+      rectCount: 2,
+      insertCalls: [2, 4],
+      removeCalls: [0, 2]
+    };
+    let promise = promiseTestHighlighterOutput(browser, word, expectedResult);
+    yield promiseEnterStringIntoFindField(findbar, word);
+    yield promise;
+
+    yield new Promise(resolve => setTimeout(resolve, kIteratorTimeout));
+    promise = promiseTestHighlighterOutput(browser, "", {
+      rectCount: 0,
+      insertCalls: [0, 0],
+      removeCalls: [1, 2]
+    });
+    findbar.clear();
+    yield promise;
+
+    findbar.close(true);
+  });
+});
diff --git a/toolkit/modules/tests/browser/browser_Finder_hidden_textarea.js b/toolkit/modules/tests/browser/browser_Finder_hidden_textarea.js
new file mode 100644
index 000000000..99d838ada
--- /dev/null
+++ b/toolkit/modules/tests/browser/browser_Finder_hidden_textarea.js
@@ -0,0 +1,52 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+add_task(function* test_bug1174036() {
+  const URI =
+    "<body><textarea>e1</textarea><textarea>e2</textarea><textarea>e3</textarea></body>";
+  yield BrowserTestUtils.withNewTab({ gBrowser, url: "data:text/html;charset=utf-8," + encodeURIComponent(URI) },
+    function* (browser) {
+      // Hide the first textarea.
+      yield ContentTask.spawn(browser, null, function() {
+        content.document.getElementsByTagName("textarea")[0].style.display = "none";
+      });
+
+      let finder = browser.finder;
+      let listener = {
+        onFindResult: function () {
+          ok(false, "callback wasn't replaced");
+        }
+      };
+      finder.addResultListener(listener);
+
+      function waitForFind() {
+        return new Promise(resolve => {
+          listener.onFindResult = resolve;
+        })
+      }
+
+      // Find the first 'e' (which should be in the second textarea).
+      let promiseFind = waitForFind();
+      finder.fastFind("e", false, false);
+      let findResult = yield promiseFind;
+      is(findResult.result, Ci.nsITypeAheadFind.FIND_FOUND, "find first string");
+
+      let firstRect = findResult.rect;
+
+      // Find the second 'e' (in the third textarea).
+      promiseFind = waitForFind();
+      finder.findAgain(false, false, false);
+      findResult = yield promiseFind;
+      is(findResult.result, Ci.nsITypeAheadFind.FIND_FOUND, "find second string");
+      ok(!findResult.rect.equals(firstRect), "found new string");
+
+      // Ensure that we properly wrap to the second textarea.
+      promiseFind = waitForFind();
+      finder.findAgain(false, false, false);
+      findResult = yield promiseFind;
+      is(findResult.result, Ci.nsITypeAheadFind.FIND_WRAPPED, "wrapped to first string");
+      ok(findResult.rect.equals(firstRect), "wrapped to original string");
+
+      finder.removeResultListener(listener);
+    });
+});
diff --git a/toolkit/modules/tests/browser/browser_Geometry.js b/toolkit/modules/tests/browser/browser_Geometry.js
new file mode 100644
index 000000000..aaca79a06
--- /dev/null
+++ b/toolkit/modules/tests/browser/browser_Geometry.js
@@ -0,0 +1,111 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+var tempScope = {};
+Components.utils.import("resource://gre/modules/Geometry.jsm", tempScope);
+var Point = tempScope.Point;
+var Rect = tempScope.Rect;
+
+function test() {
+  ok(Rect, "Rect class exists");
+  for (var fname in tests) {
+    tests[fname]();
+  }
+}
+
+var tests = {
+  testGetDimensions: function() {
+    let r = new Rect(5, 10, 100, 50);
+    ok(r.left == 5, "rect has correct left value");
+    ok(r.top == 10, "rect has correct top value");
+    ok(r.right == 105, "rect has correct right value");
+    ok(r.bottom == 60, "rect has correct bottom value");
+    ok(r.width == 100, "rect has correct width value");
+    ok(r.height == 50, "rect has correct height value");
+    ok(r.x == 5, "rect has correct x value");
+    ok(r.y == 10, "rect has correct y value");
+  },
+
+  testIsEmpty: function() {
+    let r = new Rect(0, 0, 0, 10);
+    ok(r.isEmpty(), "rect with nonpositive width is empty");
+    r = new Rect(0, 0, 10, 0);
+    ok(r.isEmpty(), "rect with nonpositive height is empty");
+    r = new Rect(0, 0, 10, 10);
+    ok(!r.isEmpty(), "rect with positive dimensions is not empty");
+  },
+
+  testRestrictTo: function() {
+    let r1 = new Rect(10, 10, 100, 100);
+    let r2 = new Rect(50, 50, 100, 100);
+    r1.restrictTo(r2);
+    ok(r1.equals(new Rect(50, 50, 60, 60)), "intersection is non-empty");
+
+    r1 = new Rect(10, 10, 100, 100);
+    r2 = new Rect(120, 120, 100, 100);
+    r1.restrictTo(r2);
+    ok(r1.isEmpty(), "intersection is empty");
+
+    r1 = new Rect(10, 10, 100, 100);
+    r2 = new Rect(0, 0, 0, 0);
+    r1.restrictTo(r2);
+    ok(r1.isEmpty(), "intersection of rect and empty is empty");
+
+    r1 = new Rect(0, 0, 0, 0);
+    r2 = new Rect(0, 0, 0, 0);
+    r1.restrictTo(r2);
+    ok(r1.isEmpty(), "intersection of empty and empty is empty");
+  },
+
+  testExpandToContain: function() {
+    let r1 = new Rect(10, 10, 100, 100);
+    let r2 = new Rect(50, 50, 100, 100);
+    r1.expandToContain(r2);
+    ok(r1.equals(new Rect(10, 10, 140, 140)), "correct expandToContain on intersecting rectangles");
+
+    r1 = new Rect(10, 10, 100, 100);
+    r2 = new Rect(120, 120, 100, 100);
+    r1.expandToContain(r2);
+    ok(r1.equals(new Rect(10, 10, 210, 210)), "correct expandToContain on non-intersecting rectangles");
+
+    r1 = new Rect(10, 10, 100, 100);
+    r2 = new Rect(0, 0, 0, 0);
+    r1.expandToContain(r2);
+    ok(r1.equals(new Rect(10, 10, 100, 100)), "expandToContain of rect and empty is rect");
+
+    r1 = new Rect(10, 10, 0, 0);
+    r2 = new Rect(0, 0, 0, 0);
+    r1.expandToContain(r2);
+    ok(r1.isEmpty(), "expandToContain of empty and empty is empty");
+  },
+
+  testSubtract: function testSubtract() {
+    function equals(rects1, rects2) {
+      return rects1.length == rects2.length && rects1.every(function(r, i) {
+        return r.equals(rects2[i]);
+      });
+    }
+
+    let r1 = new Rect(0, 0, 100, 100);
+    let r2 = new Rect(500, 500, 100, 100);
+    ok(equals(r1.subtract(r2), [r1]), "subtract area outside of region yields same region");
+
+    r1 = new Rect(0, 0, 100, 100);
+    r2 = new Rect(-10, -10, 50, 120);
+    ok(equals(r1.subtract(r2), [new Rect(40, 0, 60, 100)]), "subtracting vertical bar from edge leaves one rect");
+
+    r1 = new Rect(0, 0, 100, 100);
+    r2 = new Rect(-10, -10, 120, 50);
+    ok(equals(r1.subtract(r2), [new Rect(0, 40, 100, 60)]), "subtracting horizontal bar from edge leaves one rect");
+
+    r1 = new Rect(0, 0, 100, 100);
+    r2 = new Rect(40, 40, 20, 20);
+    ok(equals(r1.subtract(r2), [
+      new Rect(0, 0, 40, 100),
+      new Rect(40, 0, 20, 40),
+      new Rect(40, 60, 20, 40),
+      new Rect(60, 0, 40, 100)]),
+      "subtracting rect in middle leaves union of rects");
+  },
+};
diff --git a/toolkit/modules/tests/browser/browser_InlineSpellChecker.js b/toolkit/modules/tests/browser/browser_InlineSpellChecker.js
new file mode 100644
index 000000000..2bffc9722
--- /dev/null
+++ b/toolkit/modules/tests/browser/browser_InlineSpellChecker.js
@@ -0,0 +1,121 @@
+function test() {
+  let tempScope = {};
+  Components.utils.import("resource://gre/modules/InlineSpellChecker.jsm", tempScope);
+  let InlineSpellChecker = tempScope.InlineSpellChecker;
+
+  ok(InlineSpellChecker, "InlineSpellChecker class exists");
+  for (var fname in tests) {
+    tests[fname]();
+  }
+}
+
+var tests = {
+  // Test various possible dictionary name to ensure they display as expected.
+  // XXX: This only works for the 'en-US' locale, as the testing involves localized output.
+  testDictionaryDisplayNames: function() {
+    let isc = new InlineSpellChecker();
+
+    // Check non-well-formed language tag.
+    is(isc.getDictionaryDisplayName("-invalid-"), "-invalid-", "'-invalid-' should display as '-invalid-'");
+
+    // XXX: It isn't clear how we'd ideally want to display variant subtags.
+
+    // Check valid language subtag.
+    is(isc.getDictionaryDisplayName("en"), "English", "'en' should display as 'English'");
+    is(isc.getDictionaryDisplayName("en-fonipa"), "English (fonipa)", "'en-fonipa' should display as 'English (fonipa)'");
+    is(isc.getDictionaryDisplayName("en-qxqaaaaz"), "English (qxqaaaaz)", "'en-qxqaaaaz' should display as 'English (qxqaaaaz)'");
+
+    // Check valid language subtag and valid region subtag.
+    is(isc.getDictionaryDisplayName("en-US"), "English (United States)", "'en-US' should display as 'English (United States)'");
+    is(isc.getDictionaryDisplayName("en-US-fonipa"), "English (United States) (fonipa)", "'en-US-fonipa' should display as 'English (United States) (fonipa)'");
+    is(isc.getDictionaryDisplayName("en-US-qxqaaaaz"), "English (United States) (qxqaaaaz)", "'en-US-qxqaaaaz' should display as 'English (United States) (qxqaaaaz)'");
+
+    // Check valid language subtag and invalid but well-formed region subtag.
+    is(isc.getDictionaryDisplayName("en-WO"), "English (WO)", "'en-WO' should display as 'English (WO)'");
+    is(isc.getDictionaryDisplayName("en-WO-fonipa"), "English (WO) (fonipa)", "'en-WO-fonipa' should display as 'English (WO) (fonipa)'");
+    is(isc.getDictionaryDisplayName("en-WO-qxqaaaaz"), "English (WO) (qxqaaaaz)", "'en-WO-qxqaaaaz' should display as 'English (WO) (qxqaaaaz)'");
+
+    // Check valid language subtag and valid script subtag.
+    todo_is(isc.getDictionaryDisplayName("en-Cyrl"), "English / Cyrillic", "'en-Cyrl' should display as 'English / Cyrillic'");
+    todo_is(isc.getDictionaryDisplayName("en-Cyrl-fonipa"), "English / Cyrillic (fonipa)", "'en-Cyrl-fonipa' should display as 'English / Cyrillic (fonipa)'");
+    todo_is(isc.getDictionaryDisplayName("en-Cyrl-qxqaaaaz"), "English / Cyrillic (qxqaaaaz)", "'en-Cyrl-qxqaaaaz' should display as 'English / Cyrillic (qxqaaaaz)'");
+    todo_is(isc.getDictionaryDisplayName("en-Cyrl-US"), "English (United States) / Cyrillic", "'en-Cyrl-US' should display as 'English (United States) / Cyrillic'");
+    todo_is(isc.getDictionaryDisplayName("en-Cyrl-US-fonipa"), "English (United States) / Cyrillic (fonipa)", "'en-Cyrl-US-fonipa' should display as 'English (United States) / Cyrillic (fonipa)'");
+    todo_is(isc.getDictionaryDisplayName("en-Cyrl-US-qxqaaaaz"), "English (United States) / Cyrillic (qxqaaaaz)", "'en-Cyrl-US-qxqaaaaz' should display as 'English (United States) / Cyrillic (qxqaaaaz)'");
+    todo_is(isc.getDictionaryDisplayName("en-Cyrl-WO"), "English (WO) / Cyrillic", "'en-Cyrl-WO' should display as 'English (WO) / Cyrillic'");
+    todo_is(isc.getDictionaryDisplayName("en-Cyrl-WO-fonipa"), "English (WO) / Cyrillic (fonipa)", "'en-Cyrl-WO-fonipa' should display as 'English (WO) / Cyrillic (fonipa)'");
+    todo_is(isc.getDictionaryDisplayName("en-Cyrl-WO-qxqaaaaz"), "English (WO) / Cyrillic (qxqaaaaz)", "'en-Cyrl-WO-qxqaaaaz' should display as 'English (WO) / Cyrillic (qxqaaaaz)'");
+
+    // Check valid language subtag and invalid but well-formed script subtag.
+    is(isc.getDictionaryDisplayName("en-Qaaz"), "English / Qaaz", "'en-Qaaz' should display as 'English / Qaaz'");
+    is(isc.getDictionaryDisplayName("en-Qaaz-fonipa"), "English / Qaaz (fonipa)", "'en-Qaaz-fonipa' should display as 'English / Qaaz (fonipa)'");
+    is(isc.getDictionaryDisplayName("en-Qaaz-qxqaaaaz"), "English / Qaaz (qxqaaaaz)", "'en-Qaaz-qxqaaaaz' should display as 'English / Qaaz (qxqaaaaz)'");
+    is(isc.getDictionaryDisplayName("en-Qaaz-US"), "English (United States) / Qaaz", "'en-Qaaz-US' should display as 'English (United States) / Qaaz'");
+    is(isc.getDictionaryDisplayName("en-Qaaz-US-fonipa"), "English (United States) / Qaaz (fonipa)", "'en-Qaaz-US-fonipa' should display as 'English (United States) / Qaaz (fonipa)'");
+    is(isc.getDictionaryDisplayName("en-Qaaz-US-qxqaaaaz"), "English (United States) / Qaaz (qxqaaaaz)", "'en-Qaaz-US-qxqaaaaz' should display as 'English (United States) / Qaaz (qxqaaaaz)'");
+    is(isc.getDictionaryDisplayName("en-Qaaz-WO"), "English (WO) / Qaaz", "'en-Qaaz-WO' should display as 'English (WO) / Qaaz'");
+    is(isc.getDictionaryDisplayName("en-Qaaz-WO-fonipa"), "English (WO) / Qaaz (fonipa)", "'en-Qaaz-WO-fonipa' should display as 'English (WO) / Qaaz (fonipa)'");
+    is(isc.getDictionaryDisplayName("en-Qaaz-WO-qxqaaaaz"), "English (WO) / Qaaz (qxqaaaaz)", "'en-Qaaz-WO-qxqaaaaz' should display as 'English (WO) / Qaaz (qxqaaaaz)'");
+
+    // Check invalid but well-formed language subtag.
+    is(isc.getDictionaryDisplayName("qaz"), "qaz", "'qaz' should display as 'qaz'");
+    is(isc.getDictionaryDisplayName("qaz-fonipa"), "qaz (fonipa)", "'qaz-fonipa' should display as 'qaz (fonipa)'");
+    is(isc.getDictionaryDisplayName("qaz-qxqaaaaz"), "qaz (qxqaaaaz)", "'qaz-qxqaaaaz' should display as 'qaz (qxqaaaaz)'");
+
+    // Check invalid but well-formed language subtag and valid region subtag.
+    is(isc.getDictionaryDisplayName("qaz-US"), "qaz (United States)", "'qaz-US' should display as 'qaz (United States)'");
+    is(isc.getDictionaryDisplayName("qaz-US-fonipa"), "qaz (United States) (fonipa)", "'qaz-US-fonipa' should display as 'qaz (United States) (fonipa)'");
+    is(isc.getDictionaryDisplayName("qaz-US-qxqaaaaz"), "qaz (United States) (qxqaaaaz)", "'qaz-US-qxqaaaaz' should display as 'qaz (United States) (qxqaaaaz)'");
+
+    // Check invalid but well-formed language subtag and invalid but well-formed region subtag.
+    is(isc.getDictionaryDisplayName("qaz-WO"), "qaz (WO)", "'qaz-WO' should display as 'qaz (WO)'");
+    is(isc.getDictionaryDisplayName("qaz-WO-fonipa"), "qaz (WO) (fonipa)", "'qaz-WO-fonipa' should display as 'qaz (WO) (fonipa)'");
+    is(isc.getDictionaryDisplayName("qaz-WO-qxqaaaaz"), "qaz (WO) (qxqaaaaz)", "'qaz-WO-qxqaaaaz' should display as 'qaz (WO) (qxqaaaaz)'");
+
+    // Check invalid but well-formed language subtag and valid script subtag.
+    todo_is(isc.getDictionaryDisplayName("qaz-Cyrl"), "qaz / Cyrillic", "'qaz-Cyrl' should display as 'qaz / Cyrillic'");
+    todo_is(isc.getDictionaryDisplayName("qaz-Cyrl-fonipa"), "qaz / Cyrillic (fonipa)", "'qaz-Cyrl-fonipa' should display as 'qaz / Cyrillic (fonipa)'");
+    todo_is(isc.getDictionaryDisplayName("qaz-Cyrl-qxqaaaaz"), "qaz / Cyrillic (qxqaaaaz)", "'qaz-Cyrl-qxqaaaaz' should display as 'qaz / Cyrillic (qxqaaaaz)'");
+    todo_is(isc.getDictionaryDisplayName("qaz-Cyrl-US"), "qaz (United States) / Cyrillic", "'qaz-Cyrl-US' should display as 'qaz (United States) / Cyrillic'");
+    todo_is(isc.getDictionaryDisplayName("qaz-Cyrl-US-fonipa"), "qaz (United States) / Cyrillic (fonipa)", "'qaz-Cyrl-US-fonipa' should display as 'qaz (United States) / Cyrillic (fonipa)'");
+    todo_is(isc.getDictionaryDisplayName("qaz-Cyrl-US-qxqaaaaz"), "qaz (United States) / Cyrillic (qxqaaaaz)", "'qaz-Cyrl-US-qxqaaaaz' should display as 'qaz (United States) / Cyrillic (qxqaaaaz)'");
+    todo_is(isc.getDictionaryDisplayName("qaz-Cyrl-WO"), "qaz (WO) / Cyrillic", "'qaz-Cyrl-WO' should display as 'qaz (WO) / Cyrillic'");
+    todo_is(isc.getDictionaryDisplayName("qaz-Cyrl-WO-fonipa"), "qaz (WO) / Cyrillic (fonipa)", "'qaz-Cyrl-WO-fonipa' should display as 'qaz (WO) / Cyrillic (fonipa)'");
+    todo_is(isc.getDictionaryDisplayName("qaz-Cyrl-WO-qxqaaaaz"), "qaz (WO) / Cyrillic (qxqaaaaz)", "'qaz-Cyrl-WO-qxqaaaaz' should display as 'qaz (WO) / Cyrillic (qxqaaaaz)'");
+
+    // Check invalid but well-formed language subtag and invalid but well-formed script subtag.
+    is(isc.getDictionaryDisplayName("qaz-Qaaz"), "qaz / Qaaz", "'qaz-Qaaz' should display as 'qaz / Qaaz'");
+    is(isc.getDictionaryDisplayName("qaz-Qaaz-fonipa"), "qaz / Qaaz (fonipa)", "'qaz-Qaaz-fonipa' should display as 'qaz / Qaaz (fonipa)'");
+    is(isc.getDictionaryDisplayName("qaz-Qaaz-qxqaaaaz"), "qaz / Qaaz (qxqaaaaz)", "'qaz-Qaaz-qxqaaaaz' should display as 'qaz / Qaaz (qxqaaaaz)'");
+    is(isc.getDictionaryDisplayName("qaz-Qaaz-US"), "qaz (United States) / Qaaz", "'qaz-Qaaz-US' should display as 'qaz (United States) / Qaaz'");
+    is(isc.getDictionaryDisplayName("qaz-Qaaz-US-fonipa"), "qaz (United States) / Qaaz (fonipa)", "'qaz-Qaaz-US-fonipa' should display as 'qaz (United States) / Qaaz (fonipa)'");
+    is(isc.getDictionaryDisplayName("qaz-Qaaz-US-qxqaaaaz"), "qaz (United States) / Qaaz (qxqaaaaz)", "'qaz-Qaaz-US-qxqaaaaz' should display as 'qaz (United States) / Qaaz (qxqaaaaz)'");
+    is(isc.getDictionaryDisplayName("qaz-Qaaz-WO"), "qaz (WO) / Qaaz", "'qaz-Qaaz-WO' should display as 'qaz (WO) / Qaaz'");
+    is(isc.getDictionaryDisplayName("qaz-Qaaz-WO-fonipa"), "qaz (WO) / Qaaz (fonipa)", "'qaz-Qaaz-WO-fonipa' should display as 'qaz (WO) / Qaaz (fonipa)'");
+    is(isc.getDictionaryDisplayName("qaz-Qaaz-WO-qxqaaaaz"), "qaz (WO) / Qaaz (qxqaaaaz)", "'qaz-Qaaz-WO-qxqaaaaz' should display as 'qaz (WO) / Qaaz (qxqaaaaz)'");
+
+    // Check multiple variant subtags.
+    todo_is(isc.getDictionaryDisplayName("en-Cyrl-US-fonipa-fonxsamp"), "English (United States) / Cyrillic (fonipa / fonxsamp)", "'en-Cyrl-US-fonipa-fonxsamp' should display as 'English (United States) / Cyrillic (fonipa / fonxsamp)'");
+    todo_is(isc.getDictionaryDisplayName("en-Cyrl-US-fonipa-qxqaaaaz"), "English (United States) / Cyrillic (fonipa / qxqaaaaz)", "'en-Cyrl-US-fonipa-qxqaaaaz' should display as 'English (United States) / Cyrillic (fonipa / qxqaaaaz)'");
+    todo_is(isc.getDictionaryDisplayName("en-Cyrl-US-fonipa-fonxsamp-qxqaaaaz"), "English (United States) / Cyrillic (fonipa / fonxsamp / qxqaaaaz)", "'en-Cyrl-US-fonipa-fonxsamp-qxqaaaaz' should display as 'English (United States) / Cyrillic (fonipa / fonxsamp / qxqaaaaz)'");
+    is(isc.getDictionaryDisplayName("qaz-Qaaz-WO-fonipa-fonxsamp"), "qaz (WO) / Qaaz (fonipa / fonxsamp)", "'qaz-Qaaz-WO-fonipa-fonxsamp' should display as 'qaz (WO) / Qaaz (fonipa / fonxsamp)'");
+    is(isc.getDictionaryDisplayName("qaz-Qaaz-WO-fonipa-qxqaaaaz"), "qaz (WO) / Qaaz (fonipa / qxqaaaaz)", "'qaz-Qaaz-WO-fonipa-qxqaaaaz' should display as 'qaz (WO) / Qaaz (fonipa / qxqaaaaz)'");
+    is(isc.getDictionaryDisplayName("qaz-Qaaz-WO-fonipa-fonxsamp-qxqaaaaz"), "qaz (WO) / Qaaz (fonipa / fonxsamp / qxqaaaaz)", "'qaz-Qaaz-WO-fonipa-fonxsamp-qxqaaaaz' should display as 'qaz (WO) / Qaaz (fonipa / fonxsamp / qxqaaaaz)'");
+
+    // Check numeric region subtag.
+    todo_is(isc.getDictionaryDisplayName("es-419"), "Spanish (Latin America and the Caribbean)", "'es-419' should display as 'Spanish (Latin America and the Caribbean)'");
+
+    // Check that extension subtags are ignored.
+    todo_is(isc.getDictionaryDisplayName("en-Cyrl-t-en-latn-m0-ungegn-2007"), "English / Cyrillic", "'en-Cyrl-t-en-latn-m0-ungegn-2007' should display as 'English / Cyrillic'");
+
+    // Check that privateuse subtags are ignored.
+    is(isc.getDictionaryDisplayName("en-x-ignore"), "English", "'en-x-ignore' should display as 'English'");
+    is(isc.getDictionaryDisplayName("en-x-ignore-this"), "English", "'en-x-ignore-this' should display as 'English'");
+    is(isc.getDictionaryDisplayName("en-x-ignore-this-subtag"), "English", "'en-x-ignore-this-subtag' should display as 'English'");
+
+    // Check that both extension and privateuse subtags are ignored.
+    todo_is(isc.getDictionaryDisplayName("en-Cyrl-t-en-latn-m0-ungegn-2007-x-ignore-this-subtag"), "English / Cyrillic", "'en-Cyrl-t-en-latn-m0-ungegn-2007-x-ignore-this-subtag' should display as 'English / Cyrillic'");
+
+    // XXX: Check grandfathered tags.
+  },
+};
diff --git a/toolkit/modules/tests/browser/browser_PageMetadata.js b/toolkit/modules/tests/browser/browser_PageMetadata.js
new file mode 100644
index 000000000..ca6e18368
--- /dev/null
+++ b/toolkit/modules/tests/browser/browser_PageMetadata.js
@@ -0,0 +1,73 @@
+/**
+ * Tests PageMetadata.jsm, which extracts metadata and microdata from a
+ * document.
+ */
+
+var {PageMetadata} = Cu.import("resource://gre/modules/PageMetadata.jsm", {});
+
+var rootURL = "http://example.com/browser/toolkit/modules/tests/browser/";
+
+function promiseDocument(fileName) {
+  let url = rootURL + fileName;
+
+  return new Promise((resolve, reject) => {
+    let xhr = new XMLHttpRequest();
+    xhr.onload = () => resolve(xhr.responseXML);
+    xhr.onerror = () => reject(new Error("Error loading document"));
+    xhr.open("GET", url);
+    xhr.responseType = "document";
+    xhr.send();
+  });
+}
+
+/**
+ * Load a simple document.
+ */
+add_task(function* simpleDoc() {
+  let fileName = "metadata_simple.html";
+  info(`Loading a simple page, ${fileName}`);
+
+  let doc = yield promiseDocument(fileName);
+  Assert.notEqual(doc, null,
+                  "Should have a document to analyse");
+
+  let data = PageMetadata.getData(doc);
+  Assert.notEqual(data, null,
+                  "Should have non-null result");
+  Assert.equal(data.url, rootURL + fileName,
+               "Should have expected url property");
+  Assert.equal(data.title, "Test Title",
+               "Should have expected title property");
+  Assert.equal(data.description, "A very simple test page",
+               "Should have expected title property");
+});
+
+add_task(function* titlesDoc() {
+  let fileName = "metadata_titles.html";
+  info(`Loading titles page, ${fileName}`);
+
+  let doc = yield promiseDocument(fileName);
+  Assert.notEqual(doc, null,
+                  "Should have a document to analyse");
+
+  let data = PageMetadata.getData(doc);
+  Assert.notEqual(data, null,
+                  "Should have non-null result");
+  Assert.equal(data.title, "Test Titles",
+               "Should use the page title, not the open graph title");
+});
+
+add_task(function* titlesFallbackDoc() {
+  let fileName = "metadata_titles_fallback.html";
+  info(`Loading titles page, ${fileName}`);
+
+  let doc = yield promiseDocument(fileName);
+  Assert.notEqual(doc, null,
+                  "Should have a document to analyse");
+
+  let data = PageMetadata.getData(doc);
+  Assert.notEqual(data, null,
+                  "Should have non-null result");
+  Assert.equal(data.title, "Title",
+               "Should use the open graph title");
+});
diff --git a/toolkit/modules/tests/browser/browser_PromiseMessage.js b/toolkit/modules/tests/browser/browser_PromiseMessage.js
new file mode 100644
index 000000000..e967ac4c9
--- /dev/null
+++ b/toolkit/modules/tests/browser/browser_PromiseMessage.js
@@ -0,0 +1,38 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+/* global Cu, BrowserTestUtils, is, ok, add_task, gBrowser */
+"use strict";
+Cu.import("resource://gre/modules/PromiseMessage.jsm", this);
+
+
+const url = "http://example.org/tests/dom/manifest/test/resource.sjs";
+
+/**
+ * Test basic API error conditions
+ */
+add_task(function* () {
+  yield BrowserTestUtils.withNewTab({gBrowser, url}, testPromiseMessageAPI)
+});
+
+function* testPromiseMessageAPI(aBrowser) {
+  // Reusing an existing message.
+  const msgKey = "DOM:WebManifest:hasManifestLink";
+  const mm = aBrowser.messageManager;
+  const id = "this should not change";
+  const foo = "neitherShouldThis";
+  const data = {id, foo};
+
+  // This just returns false, and it doesn't matter for this test.
+  yield PromiseMessage.send(mm, msgKey, data);
+
+  // Check that no new props were added
+  const props = Object.getOwnPropertyNames(data);
+  ok(props.length === 2, "There should only be 2 props");
+  ok(props.includes("id"), "Has the id property");
+  ok(props.includes("foo"), "Has the foo property");
+
+  // Check that the props didn't change.
+  is(data.id, id, "The id prop must not change.");
+  is(data.foo, foo, "The foo prop must not change.");
+}
diff --git a/toolkit/modules/tests/browser/browser_RemotePageManager.js b/toolkit/modules/tests/browser/browser_RemotePageManager.js
new file mode 100644
index 000000000..774d33034
--- /dev/null
+++ b/toolkit/modules/tests/browser/browser_RemotePageManager.js
@@ -0,0 +1,400 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+const TEST_URL = "http://www.example.com/browser/toolkit/modules/tests/browser/testremotepagemanager.html";
+
+var { RemotePages, RemotePageManager } = Cu.import("resource://gre/modules/RemotePageManager.jsm", {});
+
+function failOnMessage(message) {
+  ok(false, "Should not have seen message " + message.name);
+}
+
+function waitForMessage(port, message, expectedPort = port) {
+  return new Promise((resolve) => {
+    function listener(message) {
+      is(message.target, expectedPort, "Message should be from the right port.");
+
+      port.removeMessageListener(listener);
+      resolve(message);
+    }
+
+    port.addMessageListener(message, listener);
+  });
+}
+
+function waitForPort(url, createTab = true) {
+  return new Promise((resolve) => {
+    RemotePageManager.addRemotePageListener(url, (port) => {
+      RemotePageManager.removeRemotePageListener(url);
+
+      waitForMessage(port, "RemotePage:Load").then(() => resolve(port));
+    });
+
+    if (createTab)
+      gBrowser.selectedTab = gBrowser.addTab(url);
+  });
+}
+
+function waitForPage(pages) {
+  return new Promise((resolve) => {
+    function listener({ target }) {
+      pages.removeMessageListener("RemotePage:Init", listener);
+
+      waitForMessage(target, "RemotePage:Load").then(() => resolve(target));
+    }
+
+    pages.addMessageListener("RemotePage:Init", listener);
+    gBrowser.selectedTab = gBrowser.addTab(TEST_URL);
+  });
+}
+
+function swapDocShells(browser1, browser2) {
+  // Swap frameLoaders.
+  browser1.swapDocShells(browser2);
+
+  // Swap permanentKeys.
+  let tmp = browser1.permanentKey;
+  browser1.permanentKey = browser2.permanentKey;
+  browser2.permanentKey = tmp;
+}
+
+// Test that opening a page creates a port, sends the load event and then
+// navigating to a new page sends the unload event. Going back should create a
+// new port
+add_task(function* init_navigate() {
+  let port = yield waitForPort(TEST_URL);
+  is(port.browser, gBrowser.selectedBrowser, "Port is for the correct browser");
+
+  let loaded = new Promise(resolve => {
+    function listener() {
+      gBrowser.selectedBrowser.removeEventListener("load", listener, true);
+      resolve();
+    }
+    gBrowser.selectedBrowser.addEventListener("load", listener, true);
+    gBrowser.loadURI("about:blank");
+  });
+
+  yield waitForMessage(port, "RemotePage:Unload");
+
+  // Port should be destroyed now
+  try {
+    port.addMessageListener("Foo", failOnMessage);
+    ok(false, "Should have seen exception");
+  }
+  catch (e) {
+    ok(true, "Should have seen exception");
+  }
+
+  try {
+    port.sendAsyncMessage("Foo");
+    ok(false, "Should have seen exception");
+  }
+  catch (e) {
+    ok(true, "Should have seen exception");
+  }
+
+  yield loaded;
+
+  gBrowser.goBack();
+  port = yield waitForPort(TEST_URL, false);
+
+  port.sendAsyncMessage("Ping2");
+  let message = yield waitForMessage(port, "Pong2");
+  port.destroy();
+
+  gBrowser.removeCurrentTab();
+});
+
+// Test that opening a page creates a port, sends the load event and then
+// closing the tab sends the unload event
+add_task(function* init_close() {
+  let port = yield waitForPort(TEST_URL);
+  is(port.browser, gBrowser.selectedBrowser, "Port is for the correct browser");
+
+  let unloadPromise = waitForMessage(port, "RemotePage:Unload");
+  gBrowser.removeCurrentTab();
+  yield unloadPromise;
+
+  // Port should be destroyed now
+  try {
+    port.addMessageListener("Foo", failOnMessage);
+    ok(false, "Should have seen exception");
+  }
+  catch (e) {
+    ok(true, "Should have seen exception");
+  }
+
+  try {
+    port.sendAsyncMessage("Foo");
+    ok(false, "Should have seen exception");
+  }
+  catch (e) {
+    ok(true, "Should have seen exception");
+  }
+});
+
+// Tests that we can send messages to individual pages even when more than one
+// is open
+add_task(function* multiple_ports() {
+  let port1 = yield waitForPort(TEST_URL);
+  is(port1.browser, gBrowser.selectedBrowser, "Port is for the correct browser");
+
+  let port2 = yield waitForPort(TEST_URL);
+  is(port2.browser, gBrowser.selectedBrowser, "Port is for the correct browser");
+
+  port2.addMessageListener("Pong", failOnMessage);
+  port1.sendAsyncMessage("Ping", { str: "foobar", counter: 0 });
+  let message = yield waitForMessage(port1, "Pong");
+  port2.removeMessageListener("Pong", failOnMessage);
+  is(message.data.str, "foobar", "String should pass through");
+  is(message.data.counter, 1, "Counter should be incremented");
+
+  port1.addMessageListener("Pong", failOnMessage);
+  port2.sendAsyncMessage("Ping", { str: "foobaz", counter: 5 });
+  message = yield waitForMessage(port2, "Pong");
+  port1.removeMessageListener("Pong", failOnMessage);
+  is(message.data.str, "foobaz", "String should pass through");
+  is(message.data.counter, 6, "Counter should be incremented");
+
+  let unloadPromise = waitForMessage(port2, "RemotePage:Unload");
+  gBrowser.removeTab(gBrowser.getTabForBrowser(port2.browser));
+  yield unloadPromise;
+
+  try {
+    port2.addMessageListener("Pong", failOnMessage);
+    ok(false, "Should not have been able to add a new message listener to a destroyed port.");
+  }
+  catch (e) {
+    ok(true, "Should not have been able to add a new message listener to a destroyed port.");
+  }
+
+  port1.sendAsyncMessage("Ping", { str: "foobar", counter: 0 });
+  message = yield waitForMessage(port1, "Pong");
+  is(message.data.str, "foobar", "String should pass through");
+  is(message.data.counter, 1, "Counter should be incremented");
+
+  unloadPromise = waitForMessage(port1, "RemotePage:Unload");
+  gBrowser.removeTab(gBrowser.getTabForBrowser(port1.browser));
+  yield unloadPromise;
+});
+
+// Tests that swapping browser docshells doesn't break the ports
+add_task(function* browser_switch() {
+  let port1 = yield waitForPort(TEST_URL);
+  is(port1.browser, gBrowser.selectedBrowser, "Port is for the correct browser");
+  let browser1 = gBrowser.selectedBrowser;
+  port1.sendAsyncMessage("SetCookie", { value: "om nom" });
+
+  let port2 = yield waitForPort(TEST_URL);
+  is(port2.browser, gBrowser.selectedBrowser, "Port is for the correct browser");
+  let browser2 = gBrowser.selectedBrowser;
+  port2.sendAsyncMessage("SetCookie", { value: "om nom nom" });
+
+  port2.addMessageListener("Cookie", failOnMessage);
+  port1.sendAsyncMessage("GetCookie");
+  let message = yield waitForMessage(port1, "Cookie");
+  port2.removeMessageListener("Cookie", failOnMessage);
+  is(message.data.value, "om nom", "Should have the right cookie");
+
+  port1.addMessageListener("Cookie", failOnMessage);
+  port2.sendAsyncMessage("GetCookie", { str: "foobaz", counter: 5 });
+  message = yield waitForMessage(port2, "Cookie");
+  port1.removeMessageListener("Cookie", failOnMessage);
+  is(message.data.value, "om nom nom", "Should have the right cookie");
+
+  swapDocShells(browser1, browser2);
+  is(port1.browser, browser2, "Should have noticed the swap");
+  is(port2.browser, browser1, "Should have noticed the swap");
+
+  // Cookies should have stayed the same
+  port2.addMessageListener("Cookie", failOnMessage);
+  port1.sendAsyncMessage("GetCookie");
+  message = yield waitForMessage(port1, "Cookie");
+  port2.removeMessageListener("Cookie", failOnMessage);
+  is(message.data.value, "om nom", "Should have the right cookie");
+
+  port1.addMessageListener("Cookie", failOnMessage);
+  port2.sendAsyncMessage("GetCookie", { str: "foobaz", counter: 5 });
+  message = yield waitForMessage(port2, "Cookie");
+  port1.removeMessageListener("Cookie", failOnMessage);
+  is(message.data.value, "om nom nom", "Should have the right cookie");
+
+  swapDocShells(browser1, browser2);
+  is(port1.browser, browser1, "Should have noticed the swap");
+  is(port2.browser, browser2, "Should have noticed the swap");
+
+  // Cookies should have stayed the same
+  port2.addMessageListener("Cookie", failOnMessage);
+  port1.sendAsyncMessage("GetCookie");
+  message = yield waitForMessage(port1, "Cookie");
+  port2.removeMessageListener("Cookie", failOnMessage);
+  is(message.data.value, "om nom", "Should have the right cookie");
+
+  port1.addMessageListener("Cookie", failOnMessage);
+  port2.sendAsyncMessage("GetCookie", { str: "foobaz", counter: 5 });
+  message = yield waitForMessage(port2, "Cookie");
+  port1.removeMessageListener("Cookie", failOnMessage);
+  is(message.data.value, "om nom nom", "Should have the right cookie");
+
+  let unloadPromise = waitForMessage(port2, "RemotePage:Unload");
+  gBrowser.removeTab(gBrowser.getTabForBrowser(browser2));
+  yield unloadPromise;
+
+  unloadPromise = waitForMessage(port1, "RemotePage:Unload");
+  gBrowser.removeTab(gBrowser.getTabForBrowser(browser1));
+  yield unloadPromise;
+});
+
+// Tests that removeMessageListener in chrome works
+add_task(function* remove_chrome_listener() {
+  let port = yield waitForPort(TEST_URL);
+  is(port.browser, gBrowser.selectedBrowser, "Port is for the correct browser");
+
+  // This relies on messages sent arriving in the same order. Pong will be
+  // sent back before Pong2 so if removeMessageListener fails the test will fail
+  port.addMessageListener("Pong", failOnMessage);
+  port.removeMessageListener("Pong", failOnMessage);
+  port.sendAsyncMessage("Ping", { str: "remove_listener", counter: 27 });
+  port.sendAsyncMessage("Ping2");
+  yield waitForMessage(port, "Pong2");
+
+  let unloadPromise = waitForMessage(port, "RemotePage:Unload");
+  gBrowser.removeCurrentTab();
+  yield unloadPromise;
+});
+
+// Tests that removeMessageListener in content works
+add_task(function* remove_content_listener() {
+  let port = yield waitForPort(TEST_URL);
+  is(port.browser, gBrowser.selectedBrowser, "Port is for the correct browser");
+
+  // This relies on messages sent arriving in the same order. Pong3 would be
+  // sent back before Pong2 so if removeMessageListener fails the test will fail
+  port.addMessageListener("Pong3", failOnMessage);
+  port.sendAsyncMessage("Ping3");
+  port.sendAsyncMessage("Ping2");
+  yield waitForMessage(port, "Pong2");
+
+  let unloadPromise = waitForMessage(port, "RemotePage:Unload");
+  gBrowser.removeCurrentTab();
+  yield unloadPromise;
+});
+
+// Test RemotePages works
+add_task(function* remote_pages_basic() {
+  let pages = new RemotePages(TEST_URL);
+  let port = yield waitForPage(pages);
+  is(port.browser, gBrowser.selectedBrowser, "Port is for the correct browser");
+
+  // Listening to global messages should work
+  let unloadPromise = waitForMessage(pages, "RemotePage:Unload", port);
+  gBrowser.removeCurrentTab();
+  yield unloadPromise;
+
+  pages.destroy();
+
+  // RemotePages should be destroyed now
+  try {
+    pages.addMessageListener("Foo", failOnMessage);
+    ok(false, "Should have seen exception");
+  }
+  catch (e) {
+    ok(true, "Should have seen exception");
+  }
+
+  try {
+    pages.sendAsyncMessage("Foo");
+    ok(false, "Should have seen exception");
+  }
+  catch (e) {
+    ok(true, "Should have seen exception");
+  }
+});
+
+// Test sending messages to all remote pages works
+add_task(function* remote_pages_multiple() {
+  let pages = new RemotePages(TEST_URL);
+  let port1 = yield waitForPage(pages);
+  let port2 = yield waitForPage(pages);
+
+  let pongPorts = [];
+  yield new Promise((resolve) => {
+    function listener({ name, target, data }) {
+      is(name, "Pong", "Should have seen the right response.");
+      is(data.str, "remote_pages", "String should pass through");
+      is(data.counter, 43, "Counter should be incremented");
+      pongPorts.push(target);
+      if (pongPorts.length == 2)
+        resolve();
+    }
+
+    pages.addMessageListener("Pong", listener);
+    pages.sendAsyncMessage("Ping", { str: "remote_pages", counter: 42 });
+  });
+
+  // We don't make any guarantees about which order messages are sent to known
+  // pages so the pongs could have come back in any order.
+  isnot(pongPorts[0], pongPorts[1], "Should have received pongs from different ports");
+  ok(pongPorts.indexOf(port1) >= 0, "Should have seen a pong from port1");
+  ok(pongPorts.indexOf(port2) >= 0, "Should have seen a pong from port2");
+
+  // After destroy we should see no messages
+  pages.addMessageListener("RemotePage:Unload", failOnMessage);
+  pages.destroy();
+
+  gBrowser.removeTab(gBrowser.getTabForBrowser(port1.browser));
+  gBrowser.removeTab(gBrowser.getTabForBrowser(port2.browser));
+});
+
+// Test sending various types of data across the boundary
+add_task(function* send_data() {
+  let port = yield waitForPort(TEST_URL);
+  is(port.browser, gBrowser.selectedBrowser, "Port is for the correct browser");
+
+  let data = {
+    integer: 45,
+    real: 45.78,
+    str: "foobar",
+    array: [1, 2, 3, 5, 27]
+  };
+
+  port.sendAsyncMessage("SendData", data);
+  let message = yield waitForMessage(port, "ReceivedData");
+
+  ok(message.data.result, message.data.status);
+
+  gBrowser.removeCurrentTab();
+});
+
+// Test sending an object of data across the boundary
+add_task(function* send_data2() {
+  let port = yield waitForPort(TEST_URL);
+  is(port.browser, gBrowser.selectedBrowser, "Port is for the correct browser");
+
+  let data = {
+    integer: 45,
+    real: 45.78,
+    str: "foobar",
+    array: [1, 2, 3, 5, 27]
+  };
+
+  port.sendAsyncMessage("SendData2", {data});
+  let message = yield waitForMessage(port, "ReceivedData2");
+
+  ok(message.data.result, message.data.status);
+
+  gBrowser.removeCurrentTab();
+});
+
+add_task(function* get_ports_for_browser() {
+  let pages = new RemotePages(TEST_URL);
+  let port = yield waitForPage(pages);
+  // waitForPage creates a new tab and selects it by default, so
+  // the selected tab should be the one hosting this port.
+  let browser = gBrowser.selectedBrowser;
+  let foundPorts = pages.portsForBrowser(browser);
+  is(foundPorts.length, 1, "There should only be one port for this simple page");
+  is(foundPorts[0], port, "Should find the port");
+  gBrowser.removeCurrentTab();
+});
diff --git a/toolkit/modules/tests/browser/browser_Troubleshoot.js b/toolkit/modules/tests/browser/browser_Troubleshoot.js
new file mode 100644
index 000000000..34c2a2791
--- /dev/null
+++ b/toolkit/modules/tests/browser/browser_Troubleshoot.js
@@ -0,0 +1,546 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// Ideally this would be an xpcshell test, but Troubleshoot relies on things
+// that aren't initialized outside of a XUL app environment like AddonManager
+// and the "@mozilla.org/xre/app-info;1" component.
+
+Components.utils.import("resource://gre/modules/AppConstants.jsm");
+Components.utils.import("resource://gre/modules/Services.jsm");
+Components.utils.import("resource://gre/modules/Troubleshoot.jsm");
+
+function test() {
+  waitForExplicitFinish();
+  function doNextTest() {
+    if (!tests.length) {
+      finish();
+      return;
+    }
+    tests.shift()(doNextTest);
+  }
+  doNextTest();
+}
+
+registerCleanupFunction(function () {
+  // Troubleshoot.jsm is imported into the global scope -- the window -- above.
+  // If it's not deleted, it outlives the test and is reported as a leak.
+  delete window.Troubleshoot;
+});
+
+var tests = [
+
+  function snapshotSchema(done) {
+    Troubleshoot.snapshot(function (snapshot) {
+      try {
+        validateObject(snapshot, SNAPSHOT_SCHEMA);
+        ok(true, "The snapshot should conform to the schema.");
+      }
+      catch (err) {
+        ok(false, "Schema mismatch, " + err);
+      }
+      done();
+    });
+  },
+
+  function modifiedPreferences(done) {
+    let prefs = [
+      "javascript.troubleshoot",
+      "troubleshoot.foo",
+      "javascript.print_to_filename",
+      "network.proxy.troubleshoot",
+    ];
+    prefs.forEach(function (p) {
+      Services.prefs.setBoolPref(p, true);
+      is(Services.prefs.getBoolPref(p), true, "The pref should be set: " + p);
+    });
+    Troubleshoot.snapshot(function (snapshot) {
+      let p = snapshot.modifiedPreferences;
+      is(p["javascript.troubleshoot"], true,
+         "The pref should be present because it's whitelisted " +
+         "but not blacklisted.");
+      ok(!("troubleshoot.foo" in p),
+         "The pref should be absent because it's not in the whitelist.");
+      ok(!("javascript.print_to_filename" in p),
+         "The pref should be absent because it's blacklisted.");
+      ok(!("network.proxy.troubleshoot" in p),
+         "The pref should be absent because it's blacklisted.");
+      prefs.forEach(p => Services.prefs.deleteBranch(p));
+      done();
+    });
+  },
+
+  function unicodePreferences(done) {
+    let name = "font.name.sans-serif.x-western";
+    let utf8Value = "\xc4\x8capk\xc5\xafv Krasopis"
+    let unicodeValue = "\u010Capk\u016Fv Krasopis";
+
+    // set/getCharPref work with 8bit strings (utf8)
+    Services.prefs.setCharPref(name, utf8Value);
+
+    Troubleshoot.snapshot(function (snapshot) {
+      let p = snapshot.modifiedPreferences;
+      is(p[name], unicodeValue, "The pref should have correct Unicode value.");
+      Services.prefs.deleteBranch(name);
+      done();
+    });
+  }
+];
+
+// This is inspired by JSON Schema, or by the example on its Wikipedia page
+// anyway.
+const SNAPSHOT_SCHEMA = {
+  type: "object",
+  required: true,
+  properties: {
+    application: {
+      required: true,
+      type: "object",
+      properties: {
+        name: {
+          required: true,
+          type: "string",
+        },
+        version: {
+          required: true,
+          type: "string",
+        },
+        buildID: {
+          required: true,
+          type: "string",
+        },
+        userAgent: {
+          required: true,
+          type: "string",
+        },
+        osVersion: {
+          required: true,
+          type: "string",
+        },
+        vendor: {
+          type: "string",
+        },
+        updateChannel: {
+          type: "string",
+        },
+        supportURL: {
+          type: "string",
+        },
+        remoteAutoStart: {
+          type: "boolean",
+          required: true,
+        },
+        autoStartStatus: {
+          type: "number",
+        },
+        numTotalWindows: {
+          type: "number",
+        },
+        numRemoteWindows: {
+          type: "number",
+        },
+        safeMode: {
+          type: "boolean",
+        },
+      },
+    },
+    crashes: {
+      required: false,
+      type: "object",
+      properties: {
+        pending: {
+          required: true,
+          type: "number",
+        },
+        submitted: {
+          required: true,
+          type: "array",
+          items: {
+            type: "object",
+            properties: {
+              id: {
+                required: true,
+                type: "string",
+              },
+              date: {
+                required: true,
+                type: "number",
+              },
+              pending: {
+                required: true,
+                type: "boolean",
+              },
+            },
+          },
+        },
+      },
+    },
+    extensions: {
+      required: true,
+      type: "array",
+      items: {
+        type: "object",
+        properties: {
+          name: {
+            required: true,
+            type: "string",
+          },
+          version: {
+            required: true,
+            type: "string",
+          },
+          id: {
+            required: true,
+            type: "string",
+          },
+          isActive: {
+            required: true,
+            type: "boolean",
+          },
+        },
+      },
+    },
+    modifiedPreferences: {
+      required: true,
+      type: "object",
+    },
+    lockedPreferences: {
+      required: true,
+      type: "object",
+    },
+    graphics: {
+      required: true,
+      type: "object",
+      properties: {
+        numTotalWindows: {
+          required: true,
+          type: "number",
+        },
+        numAcceleratedWindows: {
+          required: true,
+          type: "number",
+        },
+        windowLayerManagerType: {
+          type: "string",
+        },
+        windowLayerManagerRemote: {
+          type: "boolean",
+        },
+        supportsHardwareH264: {
+          type: "string",
+        },
+        currentAudioBackend: {
+          type: "string",
+        },
+        numAcceleratedWindowsMessage: {
+          type: "array",
+        },
+        adapterDescription: {
+          type: "string",
+        },
+        adapterVendorID: {
+          type: "string",
+        },
+        adapterDeviceID: {
+          type: "string",
+        },
+        adapterSubsysID: {
+          type: "string",
+        },
+        adapterRAM: {
+          type: "string",
+        },
+        adapterDrivers: {
+          type: "string",
+        },
+        driverVersion: {
+          type: "string",
+        },
+        driverDate: {
+          type: "string",
+        },
+        adapterDescription2: {
+          type: "string",
+        },
+        adapterVendorID2: {
+          type: "string",
+        },
+        adapterDeviceID2: {
+          type: "string",
+        },
+        adapterSubsysID2: {
+          type: "string",
+        },
+        adapterRAM2: {
+          type: "string",
+        },
+        adapterDrivers2: {
+          type: "string",
+        },
+        driverVersion2: {
+          type: "string",
+        },
+        driverDate2: {
+          type: "string",
+        },
+        isGPU2Active: {
+          type: "boolean",
+        },
+        direct2DEnabled: {
+          type: "boolean",
+        },
+        directWriteEnabled: {
+          type: "boolean",
+        },
+        directWriteVersion: {
+          type: "string",
+        },
+        clearTypeParameters: {
+          type: "string",
+        },
+        webglRenderer: {
+          type: "string",
+        },
+        webgl2Renderer: {
+          type: "string",
+        },
+        info: {
+          type: "object",
+        },
+        failures: {
+          type: "array",
+          items: {
+            type: "string",
+          },
+        },
+        indices: {
+          type: "array",
+          items: {
+            type: "number",
+          },
+        },
+        featureLog: {
+          type: "object",
+        },
+        crashGuards: {
+          type: "array",
+        },
+        direct2DEnabledMessage: {
+          type: "array",
+        },
+      },
+    },
+    javaScript: {
+      required: true,
+      type: "object",
+      properties: {
+        incrementalGCEnabled: {
+          type: "boolean",
+        },
+      },
+    },
+    accessibility: {
+      required: true,
+      type: "object",
+      properties: {
+        isActive: {
+          required: true,
+          type: "boolean",
+        },
+        forceDisabled: {
+          type: "number",
+        },
+      },
+    },
+    libraryVersions: {
+      required: true,
+      type: "object",
+      properties: {
+        NSPR: {
+          required: true,
+          type: "object",
+          properties: {
+            minVersion: {
+              required: true,
+              type: "string",
+            },
+            version: {
+              required: true,
+              type: "string",
+            },
+          },
+        },
+        NSS: {
+          required: true,
+          type: "object",
+          properties: {
+            minVersion: {
+              required: true,
+              type: "string",
+            },
+            version: {
+              required: true,
+              type: "string",
+            },
+          },
+        },
+        NSSUTIL: {
+          required: true,
+          type: "object",
+          properties: {
+            minVersion: {
+              required: true,
+              type: "string",
+            },
+            version: {
+              required: true,
+              type: "string",
+            },
+          },
+        },
+        NSSSSL: {
+          required: true,
+          type: "object",
+          properties: {
+            minVersion: {
+              required: true,
+              type: "string",
+            },
+            version: {
+              required: true,
+              type: "string",
+            },
+          },
+        },
+        NSSSMIME: {
+          required: true,
+          type: "object",
+          properties: {
+            minVersion: {
+              required: true,
+              type: "string",
+            },
+            version: {
+              required: true,
+              type: "string",
+            },
+          },
+        },
+      },
+    },
+    userJS: {
+      required: true,
+      type: "object",
+      properties: {
+        exists: {
+          required: true,
+          type: "boolean",
+        },
+      },
+    },
+    experiments: {
+      type: "array",
+    },
+    sandbox: {
+      required: false,
+      type: "object",
+      properties: {
+        hasSeccompBPF: {
+          required: AppConstants.platform == "linux",
+          type: "boolean"
+        },
+        hasSeccompTSync: {
+          required: AppConstants.platform == "linux",
+          type: "boolean"
+        },
+        hasUserNamespaces: {
+          required: AppConstants.platform == "linux",
+          type: "boolean"
+        },
+        hasPrivilegedUserNamespaces: {
+          required: AppConstants.platform == "linux",
+          type: "boolean"
+        },
+        canSandboxContent: {
+          required: false,
+          type: "boolean"
+        },
+        canSandboxMedia: {
+          required: false,
+          type: "boolean"
+        },
+        contentSandboxLevel: {
+          required: AppConstants.MOZ_CONTENT_SANDBOX,
+          type: "number"
+        },
+      },
+    },
+  },
+};
+
+/**
+ * Throws an Error if obj doesn't conform to schema.  That way you get a nice
+ * error message and a stack to help you figure out what went wrong, which you
+ * wouldn't get if this just returned true or false instead.  There's still
+ * room for improvement in communicating validation failures, however.
+ *
+ * @param obj    The object to validate.
+ * @param schema The schema that obj should conform to.
+ */
+function validateObject(obj, schema) {
+  if (obj === undefined && !schema.required)
+    return;
+  if (typeof(schema.type) != "string")
+    throw schemaErr("'type' must be a string", schema);
+  if (objType(obj) != schema.type)
+    throw validationErr("Object is not of the expected type", obj, schema);
+  let validatorFnName = "validateObject_" + schema.type;
+  if (!(validatorFnName in this))
+    throw schemaErr("Validator function not defined for type", schema);
+  this[validatorFnName](obj, schema);
+}
+
+function validateObject_object(obj, schema) {
+  if (typeof(schema.properties) != "object")
+    // Don't care what obj's properties are.
+    return;
+  // First check that all the schema's properties match the object.
+  for (let prop in schema.properties)
+    validateObject(obj[prop], schema.properties[prop]);
+  // Now check that the object doesn't have any properties not in the schema.
+  for (let prop in obj)
+    if (!(prop in schema.properties))
+      throw validationErr("Object has property "+prop+" not in schema", obj, schema);
+}
+
+function validateObject_array(array, schema) {
+  if (typeof(schema.items) != "object")
+    // Don't care what the array's elements are.
+    return;
+  array.forEach(elt => validateObject(elt, schema.items));
+}
+
+function validateObject_string(str, schema) {}
+function validateObject_boolean(bool, schema) {}
+function validateObject_number(num, schema) {}
+
+function validationErr(msg, obj, schema) {
+  return new Error("Validation error: " + msg +
+                   ": object=" + JSON.stringify(obj) +
+                   ", schema=" + JSON.stringify(schema));
+}
+
+function schemaErr(msg, schema) {
+  return new Error("Schema error: " + msg + ": " + JSON.stringify(schema));
+}
+
+function objType(obj) {
+  let type = typeof(obj);
+  if (type != "object")
+    return type;
+  if (Array.isArray(obj))
+    return "array";
+  if (obj === null)
+    return "null";
+  return type;
+}
diff --git a/toolkit/modules/tests/browser/browser_WebNavigation.js b/toolkit/modules/tests/browser/browser_WebNavigation.js
new file mode 100644
index 000000000..e09cb1994
--- /dev/null
+++ b/toolkit/modules/tests/browser/browser_WebNavigation.js
@@ -0,0 +1,140 @@
+"use strict";
+
+var { interfaces: Ci, classes: Cc, utils: Cu, results: Cr } = Components;
+
+var {WebNavigation} = Cu.import("resource://gre/modules/WebNavigation.jsm", {});
+
+const BASE = "http://example.com/browser/toolkit/modules/tests/browser";
+const URL = BASE + "/file_WebNavigation_page1.html";
+const FRAME = BASE + "/file_WebNavigation_page2.html";
+const FRAME2 = BASE + "/file_WebNavigation_page3.html";
+
+const EVENTS = [
+  "onBeforeNavigate",
+  "onCommitted",
+  "onDOMContentLoaded",
+  "onCompleted",
+  "onErrorOccurred",
+  "onReferenceFragmentUpdated",
+];
+
+const REQUIRED = [
+  "onBeforeNavigate",
+  "onCommitted",
+  "onDOMContentLoaded",
+  "onCompleted",
+];
+
+var expectedBrowser;
+var received = [];
+var completedResolve;
+var waitingURL, waitingEvent;
+var rootWindowID;
+
+function gotEvent(event, details)
+{
+  if (!details.url.startsWith(BASE)) {
+    return;
+  }
+  info(`Got ${event} ${details.url} ${details.windowId} ${details.parentWindowId}`);
+
+  is(details.browser, expectedBrowser, "correct <browser> element");
+
+  received.push({url: details.url, event});
+
+  if (typeof(rootWindowID) == "undefined") {
+    rootWindowID = details.windowId;
+  }
+
+  if (details.url == URL) {
+    is(details.windowId, rootWindowID, "root window ID correct");
+  } else {
+    is(details.parentWindowId, rootWindowID, "parent window ID correct");
+    isnot(details.windowId, rootWindowID, "window ID probably okay");
+  }
+
+  isnot(details.windowId, undefined);
+  isnot(details.parentWindowId, undefined);
+
+  if (details.url == waitingURL && event == waitingEvent) {
+    completedResolve();
+  }
+}
+
+function loadViaFrameScript(url, event, script)
+{
+  // Loading via a frame script ensures that the chrome process never
+  // "gets ahead" of frame scripts in non-e10s mode.
+  received = [];
+  waitingURL = url;
+  waitingEvent = event;
+  expectedBrowser.messageManager.loadFrameScript("data:," + script, false);
+  return new Promise(resolve => { completedResolve = resolve; });
+}
+
+add_task(function* webnav_ordering() {
+  let listeners = {};
+  for (let event of EVENTS) {
+    listeners[event] = gotEvent.bind(null, event);
+    WebNavigation[event].addListener(listeners[event]);
+  }
+
+  gBrowser.selectedTab = gBrowser.addTab();
+  let browser = gBrowser.selectedBrowser;
+  expectedBrowser = browser;
+
+  yield BrowserTestUtils.browserLoaded(browser);
+
+  yield loadViaFrameScript(URL, "onCompleted", `content.location = "${URL}";`);
+
+  function checkRequired(url) {
+    for (let event of REQUIRED) {
+      let found = false;
+      for (let r of received) {
+        if (r.url == url && r.event == event) {
+          found = true;
+        }
+      }
+      ok(found, `Received event ${event} from ${url}`);
+    }
+  }
+
+  checkRequired(URL);
+  checkRequired(FRAME);
+
+  function checkBefore(action1, action2) {
+    function find(action) {
+      for (let i = 0; i < received.length; i++) {
+        if (received[i].url == action.url && received[i].event == action.event) {
+          return i;
+        }
+      }
+      return -1;
+    }
+
+    let index1 = find(action1);
+    let index2 = find(action2);
+    ok(index1 != -1, `Action ${JSON.stringify(action1)} happened`);
+    ok(index2 != -1, `Action ${JSON.stringify(action2)} happened`);
+    ok(index1 < index2, `Action ${JSON.stringify(action1)} happened before ${JSON.stringify(action2)}`);
+  }
+
+  checkBefore({url: URL, event: "onCommitted"}, {url: FRAME, event: "onBeforeNavigate"});
+  checkBefore({url: FRAME, event: "onCompleted"}, {url: URL, event: "onCompleted"});
+
+  yield loadViaFrameScript(FRAME2, "onCompleted", `content.frames[0].location = "${FRAME2}";`);
+
+  checkRequired(FRAME2);
+
+  yield loadViaFrameScript(FRAME2 + "#ref", "onReferenceFragmentUpdated",
+                           "content.frames[0].document.getElementById('elt').click();");
+
+  info("Received onReferenceFragmentUpdated from FRAME2");
+
+  gBrowser.removeCurrentTab();
+
+  for (let event of EVENTS) {
+    WebNavigation[event].removeListener(listeners[event]);
+  }
+});
+
diff --git a/toolkit/modules/tests/browser/browser_WebRequest.js b/toolkit/modules/tests/browser/browser_WebRequest.js
new file mode 100644
index 000000000..cdb28b16c
--- /dev/null
+++ b/toolkit/modules/tests/browser/browser_WebRequest.js
@@ -0,0 +1,214 @@
+"use strict";
+
+var { interfaces: Ci, classes: Cc, utils: Cu, results: Cr } = Components;
+
+var {WebRequest} = Cu.import("resource://gre/modules/WebRequest.jsm", {});
+
+const BASE = "http://example.com/browser/toolkit/modules/tests/browser";
+const URL = BASE + "/file_WebRequest_page1.html";
+
+var expected_browser;
+
+function checkType(details)
+{
+  let expected_type = "???";
+  if (details.url.indexOf("style") != -1) {
+    expected_type = "stylesheet";
+  } else if (details.url.indexOf("image") != -1) {
+    expected_type = "image";
+  } else if (details.url.indexOf("script") != -1) {
+    expected_type = "script";
+  } else if (details.url.indexOf("page1") != -1) {
+    expected_type = "main_frame";
+  } else if (/page2|_redirection\.|dummy_page/.test(details.url)) {
+    expected_type = "sub_frame";
+  } else if (details.url.indexOf("xhr") != -1) {
+    expected_type = "xmlhttprequest";
+  }
+  is(details.type, expected_type, "resource type is correct");
+}
+
+var windowIDs = new Map();
+
+var requested = [];
+
+function onBeforeRequest(details)
+{
+  info(`onBeforeRequest ${details.url}`);
+  if (details.url.startsWith(BASE)) {
+    requested.push(details.url);
+
+    is(details.browser, expected_browser, "correct <browser> element");
+    checkType(details);
+
+    windowIDs.set(details.url, details.windowId);
+    if (details.url.indexOf("page2") != -1) {
+      let page1id = windowIDs.get(URL);
+      ok(details.windowId != page1id, "sub-frame gets its own window ID");
+      is(details.parentWindowId, page1id, "parent window id is correct");
+    }
+  }
+  if (details.url.indexOf("_bad.") != -1) {
+    return {cancel: true};
+  }
+  return undefined;
+}
+
+var sendHeaders = [];
+
+function onBeforeSendHeaders(details)
+{
+  info(`onBeforeSendHeaders ${details.url}`);
+  if (details.url.startsWith(BASE)) {
+    sendHeaders.push(details.url);
+
+    is(details.browser, expected_browser, "correct <browser> element");
+    checkType(details);
+
+    let id = windowIDs.get(details.url);
+    is(id, details.windowId, "window ID same in onBeforeSendHeaders as onBeforeRequest");
+  }
+  if (details.url.indexOf("_redirect.") != -1) {
+    return {redirectUrl: details.url.replace("_redirect.", "_good.")};
+  }
+  return undefined;
+}
+
+var beforeRedirect = [];
+
+function onBeforeRedirect(details)
+{
+  info(`onBeforeRedirect ${details.url} -> ${details.redirectUrl}`);
+  checkType(details);
+  if (details.url.startsWith(BASE)) {
+    beforeRedirect.push(details.url);
+
+    is(details.browser, expected_browser, "correct <browser> element");
+    checkType(details);
+
+    let expectedUrl = details.url.replace("_redirect.", "_good.").replace(/\w+_redirection\..*/, "dummy_page.html")
+    is(details.redirectUrl, expectedUrl, "Correct redirectUrl value");
+  }
+  let id = windowIDs.get(details.url);
+  is(id, details.windowId, "window ID same in onBeforeRedirect as onBeforeRequest");
+  // associate stored windowId with final url
+  windowIDs.set(details.redirectUrl, details.windowId);
+  return {};
+}
+
+var headersReceived = [];
+
+function onResponseStarted(details)
+{
+  if (details.url.startsWith(BASE)) {
+    headersReceived.push(details.url);
+  }
+}
+
+const expected_requested = [BASE + "/file_WebRequest_page1.html",
+                            BASE + "/file_style_good.css",
+                            BASE + "/file_style_bad.css",
+                            BASE + "/file_style_redirect.css",
+                            BASE + "/file_image_good.png",
+                            BASE + "/file_image_bad.png",
+                            BASE + "/file_image_redirect.png",
+                            BASE + "/file_script_good.js",
+                            BASE + "/file_script_bad.js",
+                            BASE + "/file_script_redirect.js",
+                            BASE + "/file_script_xhr.js",
+                            BASE + "/file_WebRequest_page2.html",
+                            BASE + "/nonexistent_script_url.js",
+                            BASE +  "/WebRequest_redirection.sjs",
+                            BASE + "/dummy_page.html",
+                            BASE + "/xhr_resource"];
+
+const expected_sendHeaders = [BASE + "/file_WebRequest_page1.html",
+                              BASE + "/file_style_good.css",
+                              BASE + "/file_style_redirect.css",
+                              BASE + "/file_image_good.png",
+                              BASE + "/file_image_redirect.png",
+                              BASE + "/file_script_good.js",
+                              BASE + "/file_script_redirect.js",
+                              BASE + "/file_script_xhr.js",
+                              BASE + "/file_WebRequest_page2.html",
+                              BASE + "/nonexistent_script_url.js",
+                              BASE +  "/WebRequest_redirection.sjs",
+                              BASE + "/dummy_page.html",
+                              BASE + "/xhr_resource"];
+
+const expected_beforeRedirect = expected_sendHeaders.filter(u => /_redirect\./.test(u))
+                                  .concat(BASE +  "/WebRequest_redirection.sjs");
+
+const expected_headersReceived = [BASE + "/file_WebRequest_page1.html",
+                                  BASE + "/file_style_good.css",
+                                  BASE + "/file_image_good.png",
+                                  BASE + "/file_script_good.js",
+                                  BASE + "/file_script_xhr.js",
+                                  BASE + "/file_WebRequest_page2.html",
+                                  BASE + "/nonexistent_script_url.js",
+                                  BASE + "/dummy_page.html",
+                                  BASE + "/xhr_resource"];
+
+function removeDupes(list)
+{
+  let j = 0;
+  for (let i = 1; i < list.length; i++) {
+    if (list[i] != list[j]) {
+      j++;
+      if (i != j) {
+        list[j] = list[i];
+      }
+    }
+  }
+  list.length = j + 1;
+}
+
+function compareLists(list1, list2, kind)
+{
+  list1.sort();
+  removeDupes(list1);
+  list2.sort();
+  removeDupes(list2);
+  is(String(list1), String(list2), `${kind} URLs correct`);
+}
+
+function* test_once()
+{
+  WebRequest.onBeforeRequest.addListener(onBeforeRequest, null, ["blocking"]);
+  WebRequest.onBeforeSendHeaders.addListener(onBeforeSendHeaders, null, ["blocking"]);
+  WebRequest.onBeforeRedirect.addListener(onBeforeRedirect);
+  WebRequest.onResponseStarted.addListener(onResponseStarted);
+
+  yield BrowserTestUtils.withNewTab({ gBrowser, url: "about:blank" },
+    function* (browser) {
+      expected_browser = browser;
+      BrowserTestUtils.loadURI(browser, URL);
+      yield BrowserTestUtils.browserLoaded(expected_browser);
+
+      expected_browser = null;
+
+      yield ContentTask.spawn(browser, null, function() {
+        let win = content.wrappedJSObject;
+        is(win.success, 2, "Good script ran");
+        is(win.failure, undefined, "Failure script didn't run");
+
+        let style =
+          content.getComputedStyle(content.document.getElementById("test"), null);
+        is(style.getPropertyValue("color"), "rgb(255, 0, 0)", "Good CSS loaded");
+      });
+    });
+
+  compareLists(requested, expected_requested, "requested");
+  compareLists(sendHeaders, expected_sendHeaders, "sendHeaders");
+  compareLists(beforeRedirect, expected_beforeRedirect, "beforeRedirect");
+  compareLists(headersReceived, expected_headersReceived, "headersReceived");
+
+  WebRequest.onBeforeRequest.removeListener(onBeforeRequest);
+  WebRequest.onBeforeSendHeaders.removeListener(onBeforeSendHeaders);
+  WebRequest.onBeforeRedirect.removeListener(onBeforeRedirect);
+  WebRequest.onResponseStarted.removeListener(onResponseStarted);
+}
+
+// Run the test twice to make sure it works with caching.
+add_task(test_once);
+add_task(test_once);
diff --git a/toolkit/modules/tests/browser/browser_WebRequest_cookies.js b/toolkit/modules/tests/browser/browser_WebRequest_cookies.js
new file mode 100644
index 000000000..b8c4f24cb
--- /dev/null
+++ b/toolkit/modules/tests/browser/browser_WebRequest_cookies.js
@@ -0,0 +1,89 @@
+"use strict";
+
+var { interfaces: Ci, classes: Cc, utils: Cu, results: Cr } = Components;
+
+var {WebRequest} = Cu.import("resource://gre/modules/WebRequest.jsm", {});
+
+const BASE = "http://example.com/browser/toolkit/modules/tests/browser";
+const URL = BASE + "/WebRequest_dynamic.sjs";
+
+var countBefore = 0;
+var countAfter = 0;
+
+function onBeforeSendHeaders(details)
+{
+  if (details.url != URL) {
+    return undefined;
+  }
+
+  countBefore++;
+
+  info(`onBeforeSendHeaders ${details.url}`);
+  let found = false;
+  let headers = [];
+  for (let {name, value} of details.requestHeaders) {
+    info(`Saw header ${name} '${value}'`);
+    if (name == "Cookie") {
+      is(value, "foopy=1", "Cookie is correct");
+      headers.push({name, value: "blinky=1"});
+      found = true;
+    } else {
+      headers.push({name, value});
+    }
+  }
+  ok(found, "Saw cookie header");
+
+  return {requestHeaders: headers};
+}
+
+function onResponseStarted(details)
+{
+  if (details.url != URL) {
+    return;
+  }
+
+  countAfter++;
+
+  info(`onResponseStarted ${details.url}`);
+  let found = false;
+  for (let {name, value} of details.responseHeaders) {
+    info(`Saw header ${name} '${value}'`);
+    if (name == "Set-Cookie") {
+      is(value, "dinky=1", "Cookie is correct");
+      found = true;
+    }
+  }
+  ok(found, "Saw cookie header");
+}
+
+add_task(function* filter_urls() {
+  // First load the URL so that we set cookie foopy=1.
+  gBrowser.selectedTab = gBrowser.addTab(URL);
+  yield waitForLoad();
+  gBrowser.removeCurrentTab();
+
+  // Now load with WebRequest set up.
+  WebRequest.onBeforeSendHeaders.addListener(onBeforeSendHeaders, null, ["blocking"]);
+  WebRequest.onResponseStarted.addListener(onResponseStarted, null);
+
+  gBrowser.selectedTab = gBrowser.addTab(URL);
+
+  yield waitForLoad();
+
+  gBrowser.removeCurrentTab();
+
+  WebRequest.onBeforeSendHeaders.removeListener(onBeforeSendHeaders);
+  WebRequest.onResponseStarted.removeListener(onResponseStarted);
+
+  is(countBefore, 1, "onBeforeSendHeaders hit once");
+  is(countAfter, 1, "onResponseStarted hit once");
+});
+
+function waitForLoad(browser = gBrowser.selectedBrowser) {
+  return new Promise(resolve => {
+    browser.addEventListener("load", function listener() {
+      browser.removeEventListener("load", listener, true);
+      resolve();
+    }, true);
+  });
+}
diff --git a/toolkit/modules/tests/browser/browser_WebRequest_filtering.js b/toolkit/modules/tests/browser/browser_WebRequest_filtering.js
new file mode 100644
index 000000000..a456678c1
--- /dev/null
+++ b/toolkit/modules/tests/browser/browser_WebRequest_filtering.js
@@ -0,0 +1,118 @@
+"use strict";
+
+var { interfaces: Ci, classes: Cc, utils: Cu, results: Cr } = Components;
+
+var {WebRequest} = Cu.import("resource://gre/modules/WebRequest.jsm", {});
+var {MatchPattern} = Cu.import("resource://gre/modules/MatchPattern.jsm", {});
+
+const BASE = "http://example.com/browser/toolkit/modules/tests/browser";
+const URL = BASE + "/file_WebRequest_page2.html";
+
+var requested = [];
+
+function onBeforeRequest(details)
+{
+  info(`onBeforeRequest ${details.url}`);
+  if (details.url.startsWith(BASE)) {
+    requested.push(details.url);
+  }
+}
+
+var sendHeaders = [];
+
+function onBeforeSendHeaders(details)
+{
+  info(`onBeforeSendHeaders ${details.url}`);
+  if (details.url.startsWith(BASE)) {
+    sendHeaders.push(details.url);
+  }
+}
+
+var completed = [];
+
+function onResponseStarted(details)
+{
+  if (details.url.startsWith(BASE)) {
+    completed.push(details.url);
+  }
+}
+
+const expected_urls = [BASE + "/file_style_good.css",
+                       BASE + "/file_style_bad.css",
+                       BASE + "/file_style_redirect.css"];
+
+function removeDupes(list)
+{
+  let j = 0;
+  for (let i = 1; i < list.length; i++) {
+    if (list[i] != list[j]) {
+      j++;
+      if (i != j) {
+        list[j] = list[i];
+      }
+    }
+  }
+  list.length = j + 1;
+}
+
+function compareLists(list1, list2, kind)
+{
+  list1.sort();
+  removeDupes(list1);
+  list2.sort();
+  removeDupes(list2);
+  is(String(list1), String(list2), `${kind} URLs correct`);
+}
+
+add_task(function* filter_urls() {
+  let filter = {urls: new MatchPattern("*://*/*_style_*")};
+
+  WebRequest.onBeforeRequest.addListener(onBeforeRequest, filter, ["blocking"]);
+  WebRequest.onBeforeSendHeaders.addListener(onBeforeSendHeaders, filter, ["blocking"]);
+  WebRequest.onResponseStarted.addListener(onResponseStarted, filter);
+
+  gBrowser.selectedTab = gBrowser.addTab(URL);
+
+  yield waitForLoad();
+
+  gBrowser.removeCurrentTab();
+
+  compareLists(requested, expected_urls, "requested");
+  compareLists(sendHeaders, expected_urls, "sendHeaders");
+  compareLists(completed, expected_urls, "completed");
+
+  WebRequest.onBeforeRequest.removeListener(onBeforeRequest);
+  WebRequest.onBeforeSendHeaders.removeListener(onBeforeSendHeaders);
+  WebRequest.onResponseStarted.removeListener(onResponseStarted);
+});
+
+add_task(function* filter_types() {
+  let filter = {types: ["stylesheet"]};
+
+  WebRequest.onBeforeRequest.addListener(onBeforeRequest, filter, ["blocking"]);
+  WebRequest.onBeforeSendHeaders.addListener(onBeforeSendHeaders, filter, ["blocking"]);
+  WebRequest.onResponseStarted.addListener(onResponseStarted, filter);
+
+  gBrowser.selectedTab = gBrowser.addTab(URL);
+
+  yield waitForLoad();
+
+  gBrowser.removeCurrentTab();
+
+  compareLists(requested, expected_urls, "requested");
+  compareLists(sendHeaders, expected_urls, "sendHeaders");
+  compareLists(completed, expected_urls, "completed");
+
+  WebRequest.onBeforeRequest.removeListener(onBeforeRequest);
+  WebRequest.onBeforeSendHeaders.removeListener(onBeforeSendHeaders);
+  WebRequest.onResponseStarted.removeListener(onResponseStarted);
+});
+
+function waitForLoad(browser = gBrowser.selectedBrowser) {
+  return new Promise(resolve => {
+    browser.addEventListener("load", function listener() {
+      browser.removeEventListener("load", listener, true);
+      resolve();
+    }, true);
+  });
+}
diff --git a/toolkit/modules/tests/browser/dummy_page.html b/toolkit/modules/tests/browser/dummy_page.html
new file mode 100644
index 000000000..c1c9a4e04
--- /dev/null
+++ b/toolkit/modules/tests/browser/dummy_page.html
@@ -0,0 +1,7 @@
+<!DOCTYPE html>
+
+<html>
+<body>
+<p>Page</p>
+</body>
+</html>
diff --git a/toolkit/modules/tests/browser/file_FinderSample.html b/toolkit/modules/tests/browser/file_FinderSample.html
new file mode 100644
index 000000000..e952d1fe9
--- /dev/null
+++ b/toolkit/modules/tests/browser/file_FinderSample.html
@@ -0,0 +1,824 @@
+<!DOCTYPE html>
+<html>
+<head>
+  <title>Childe Roland</title>
+</head>
+<body>
+<h1>"Childe Roland to the Dark Tower Came"</h1><h5>Robert Browning</h5>
+<dl>
+<dd>
+<dl>
+<dd>
+<dl>
+<dd>I.</dd>
+</dl>
+</dd>
+</dl>
+</dd>
+<dd>My first thought was, he lied in every word,
+<dl>
+<dd>That hoary cripple, with malicious eye</dd>
+<dd>Askance to watch the working of his lie</dd>
+</dl>
+</dd>
+<dd>On mine, and mouth scarce able to afford</dd>
+<dd>Suppression of the glee that pursed and scored
+<dl>
+<dd>Its edge, at one more victim gained thereby.</dd>
+</dl>
+</dd>
+</dl>
+<p><br /></p>
+<dl>
+<dd>
+<dl>
+<dd>
+<dl>
+<dd>II.</dd>
+</dl>
+</dd>
+</dl>
+</dd>
+<dd>What else should he be set for, with his staff?
+<dl>
+<dd>What, save to waylay with his lies, ensnare</dd>
+<dd>All travellers who might find him posted there,</dd>
+</dl>
+</dd>
+<dd>And ask the road? I guessed what skull-like laugh</dd>
+<dd>Would break, what crutch 'gin write my epitaph
+<dl>
+<dd>For pastime in the dusty thoroughfare,</dd>
+</dl>
+</dd>
+</dl>
+<p><br /></p>
+<dl>
+<dd>
+<dl>
+<dd>
+<dl>
+<dd>III.</dd>
+</dl>
+</dd>
+</dl>
+</dd>
+<dd>If at his counsel I should turn aside
+<dl>
+<dd>Into that ominous tract which, all agree,</dd>
+<dd>Hides the Dark Tower. Yet acquiescingly</dd>
+</dl>
+</dd>
+<dd>I did turn as he pointed: neither pride</dd>
+<dd>Nor hope rekindling at the end descried,
+<dl>
+<dd>So much as gladness that some end might be.</dd>
+</dl>
+</dd>
+</dl>
+<p><br /></p>
+<dl>
+<dd>
+<dl>
+<dd>
+<dl>
+<dd>IV.</dd>
+</dl>
+</dd>
+</dl>
+</dd>
+<dd>For, what with my whole world-wide wandering,
+<dl>
+<dd>What with my search drawn out thro' years, my hope</dd>
+<dd>Dwindled into a ghost not fit to cope</dd>
+</dl>
+</dd>
+<dd>With that obstreperous joy success would bring,</dd>
+<dd>I hardly tried now to rebuke the spring
+<dl>
+<dd>My heart made, finding failure in its scope.</dd>
+</dl>
+</dd>
+</dl>
+<p><br /></p>
+<dl>
+<dd>
+<dl>
+<dd>
+<dl>
+<dd>V.</dd>
+</dl>
+</dd>
+</dl>
+</dd>
+<dd>As when a sick man very near to death
+<dl>
+<dd>Seems dead indeed, and feels begin and end</dd>
+<dd>The tears and takes the farewell of each friend,</dd>
+</dl>
+</dd>
+<dd>And hears one bid the other go, draw breath</dd>
+<dd>Freelier outside ("since all is o'er," he saith,
+<dl>
+<dd>"And the blow fallen no grieving can amend;")</dd>
+</dl>
+</dd>
+</dl>
+<p><br /></p>
+<dl>
+<dd>
+<dl>
+<dd>
+<dl>
+<dd>VI.</dd>
+</dl>
+</dd>
+</dl>
+</dd>
+<dd>While some discuss if near the other graves
+<dl>
+<dd>Be room enough for this, and when a day</dd>
+<dd>Suits best for carrying the corpse away,</dd>
+</dl>
+</dd>
+<dd>With care about the banners, scarves and staves:</dd>
+<dd>And still the man hears all, and only craves
+<dl>
+<dd>He may not shame such tender love and stay.</dd>
+</dl>
+</dd>
+</dl>
+<p><br /></p>
+<dl>
+<dd>
+<dl>
+<dd>
+<dl>
+<dd>VII.</dd>
+</dl>
+</dd>
+</dl>
+</dd>
+<dd>Thus, I had so long suffered in this quest,
+<dl>
+<dd>Heard failure prophesied so oft, been writ</dd>
+<dd>So many times among "The Band" - to wit,</dd>
+</dl>
+</dd>
+<dd>The knights who to the Dark Tower's search addressed</dd>
+<dd>Their steps - that just to fail as they, seemed best,
+<dl>
+<dd>And all the doubt was now—should I be fit?</dd>
+</dl>
+</dd>
+</dl>
+<p><br /></p>
+<dl>
+<dd>
+<dl>
+<dd>
+<dl>
+<dd>VIII.</dd>
+</dl>
+</dd>
+</dl>
+</dd>
+<dd>So, quiet as despair, I turned from him,
+<dl>
+<dd>That hateful cripple, out of his highway</dd>
+<dd>Into the path he pointed. All the day</dd>
+</dl>
+</dd>
+<dd>Had been a dreary one at best, and dim</dd>
+<dd>Was settling to its close, yet shot one grim
+<dl>
+<dd>Red leer to see the plain catch its estray.</dd>
+</dl>
+</dd>
+</dl>
+<p><br /></p>
+<dl>
+<dd>
+<dl>
+<dd>
+<dl>
+<dd>IX.</dd>
+</dl>
+</dd>
+</dl>
+</dd>
+<dd>For mark! no sooner was I fairly found
+<dl>
+<dd>Pledged to the plain, after a pace or two,</dd>
+<dd>Than, pausing to throw backward a last view</dd>
+</dl>
+</dd>
+<dd>O'er the safe road, 'twas gone; grey plain all round:</dd>
+<dd>Nothing but plain to the horizon's bound.
+<dl>
+<dd>I might go on; nought else remained to do.</dd>
+</dl>
+</dd>
+</dl>
+<p><br /></p>
+<dl>
+<dd>
+<dl>
+<dd>
+<dl>
+<dd>X.</dd>
+</dl>
+</dd>
+</dl>
+</dd>
+<dd>So, on I went. I think I never saw
+<dl>
+<dd>Such starved ignoble nature; nothing throve:</dd>
+<dd>For flowers - as well expect a cedar grove!</dd>
+</dl>
+</dd>
+<dd>But cockle, spurge, according to their law</dd>
+<dd>Might propagate their kind, with none to awe,
+<dl>
+<dd>You'd think; a burr had been a treasure trove.</dd>
+</dl>
+</dd>
+</dl>
+<p><br /></p>
+<dl>
+<dd>
+<dl>
+<dd>
+<dl>
+<dd>XI.</dd>
+</dl>
+</dd>
+</dl>
+</dd>
+<dd>No! penury, inertness and grimace,
+<dl>
+<dd>In some strange sort, were the land's portion. "See</dd>
+<dd>Or shut your eyes," said Nature peevishly,</dd>
+</dl>
+</dd>
+<dd>"It nothing skills: I cannot help my case:</dd>
+<dd>'Tis the Last Judgment's fire must cure this place,
+<dl>
+<dd>Calcine its clods and set my prisoners free."</dd>
+</dl>
+</dd>
+</dl>
+<p><br /></p>
+<dl>
+<dd>
+<dl>
+<dd>
+<dl>
+<dd>XII.</dd>
+</dl>
+</dd>
+</dl>
+</dd>
+<dd>If there pushed any ragged thistle-stalk
+<dl>
+<dd>Above its mates, the head was chopped; the bents</dd>
+<dd>Were jealous else. What made those holes and rents</dd>
+</dl>
+</dd>
+<dd>In the dock's harsh swarth leaves, bruised as to baulk</dd>
+<dd>All hope of greenness? 'tis a brute must walk
+<dl>
+<dd>Pashing their life out, with a brute's intents.</dd>
+</dl>
+</dd>
+</dl>
+<p><br /></p>
+<dl>
+<dd>
+<dl>
+<dd>
+<dl>
+<dd>XIII.</dd>
+</dl>
+</dd>
+</dl>
+</dd>
+<dd>As for the grass, it grew as scant as hair
+<dl>
+<dd>In leprosy; thin dry blades pricked the mud</dd>
+<dd>Which underneath looked kneaded up with blood.</dd>
+</dl>
+</dd>
+<dd>One stiff blind horse, his every bone a-stare,</dd>
+<dd>Stood stupefied, however he came there:
+<dl>
+<dd>Thrust out past service from the devil's stud!</dd>
+</dl>
+</dd>
+</dl>
+<p><br /></p>
+<dl>
+<dd>
+<dl>
+<dd>
+<dl>
+<dd>XIV.</dd>
+</dl>
+</dd>
+</dl>
+</dd>
+<dd>Alive? he might be dead for aught I know,
+<dl>
+<dd>With that red gaunt and colloped neck a-strain,</dd>
+<dd>And shut eyes underneath the rusty mane;</dd>
+</dl>
+</dd>
+<dd>Seldom went such grotesqueness with such woe;</dd>
+<dd>I never saw a brute I hated so;
+<dl>
+<dd>He must be wicked to deserve such pain.</dd>
+</dl>
+</dd>
+</dl>
+<p><br /></p>
+<dl>
+<dd>
+<dl>
+<dd>
+<dl>
+<dd>XV.</dd>
+</dl>
+</dd>
+</dl>
+</dd>
+<dd>I shut my eyes and turned them on my heart.
+<dl>
+<dd>As a man calls for wine before he fights,</dd>
+<dd>I asked one draught of earlier, happier sights,</dd>
+</dl>
+</dd>
+<dd>Ere fitly I could hope to play my part.</dd>
+<dd>Think first, fight afterwards - the soldier's art:
+<dl>
+<dd>One taste of the old time sets all to rights.</dd>
+</dl>
+</dd>
+</dl>
+<p><br /></p>
+<dl>
+<dd>
+<dl>
+<dd>
+<dl>
+<dd>XVI.</dd>
+</dl>
+</dd>
+</dl>
+</dd>
+<dd>Not it! I fancied Cuthbert's reddening face
+<dl>
+<dd>Beneath its garniture of curly gold,</dd>
+<dd>Dear fellow, till I almost felt him fold</dd>
+</dl>
+</dd>
+<dd>An arm in mine to fix me to the place</dd>
+<dd>That way he used. Alas, one night's disgrace!
+<dl>
+<dd>Out went my heart's new fire and left it cold.</dd>
+</dl>
+</dd>
+</dl>
+<p><br /></p>
+<dl>
+<dd>
+<dl>
+<dd>
+<dl>
+<dd>XVII.</dd>
+</dl>
+</dd>
+</dl>
+</dd>
+<dd>Giles then, the soul of honour - there he stands
+<dl>
+<dd>Frank as ten years ago when knighted first.</dd>
+<dd>What honest men should dare (he said) he durst.</dd>
+</dl>
+</dd>
+<dd>Good - but the scene shifts - faugh! what hangman hands</dd>
+<dd>Pin to his breast a parchment? His own bands
+<dl>
+<dd>Read it. Poor traitor, spit upon and curst!</dd>
+</dl>
+</dd>
+</dl>
+<p><br /></p>
+<dl>
+<dd>
+<dl>
+<dd>
+<dl>
+<dd>XVIII.</dd>
+</dl>
+</dd>
+</dl>
+</dd>
+<dd>Better this present than a past like that;
+<dl>
+<dd>Back therefore to my darkening path again!</dd>
+<dd>No sound, no sight as far as eye could strain.</dd>
+</dl>
+</dd>
+<dd>Will the night send a howlet or a bat?</dd>
+<dd>I asked: when something on the dismal flat
+<dl>
+<dd>Came to arrest my thoughts and change their train.</dd>
+</dl>
+</dd>
+</dl>
+<p><br /></p>
+<dl>
+<dd>
+<dl>
+<dd>
+<dl>
+<dd>XIX.</dd>
+</dl>
+</dd>
+</dl>
+</dd>
+<dd>A sudden little river crossed my path
+<dl>
+<dd>As unexpected as a serpent comes.</dd>
+<dd>No sluggish tide congenial to the glooms;</dd>
+</dl>
+</dd>
+<dd>This, as it frothed by, might have been a bath</dd>
+<dd>For the fiend's glowing hoof - to see the wrath
+<dl>
+<dd>Of its black eddy bespate with flakes and spumes.</dd>
+</dl>
+</dd>
+</dl>
+<p><br /></p>
+<dl>
+<dd>
+<dl>
+<dd>
+<dl>
+<dd>XX.</dd>
+</dl>
+</dd>
+</dl>
+</dd>
+<dd>So petty yet so spiteful! All along
+<dl>
+<dd>Low scrubby alders kneeled down over it;</dd>
+<dd>Drenched willows flung them headlong in a fit</dd>
+</dl>
+</dd>
+<dd>Of mute despair, a suicidal throng:</dd>
+<dd>The river which had done them all the wrong,
+<dl>
+<dd>Whate'er that was, rolled by, deterred no whit.</dd>
+</dl>
+</dd>
+</dl>
+<p><br /></p>
+<dl>
+<dd>
+<dl>
+<dd>
+<dl>
+<dd>XXI.</dd>
+</dl>
+</dd>
+</dl>
+</dd>
+<dd>Which, while I forded, - good saints, how I feared
+<dl>
+<dd>To set my foot upon a dead man's cheek,</dd>
+<dd>Each step, or feel the spear I thrust to seek</dd>
+</dl>
+</dd>
+<dd>For hollows, tangled in his hair or beard!</dd>
+<dd>—It may have been a water-rat I speared,
+<dl>
+<dd>But, ugh! it sounded like a baby's shriek.</dd>
+</dl>
+</dd>
+</dl>
+<p><br /></p>
+<dl>
+<dd>
+<dl>
+<dd>
+<dl>
+<dd>XXII.</dd>
+</dl>
+</dd>
+</dl>
+</dd>
+<dd>Glad was I when I reached the other bank.
+<dl>
+<dd>Now for a better country. Vain presage!</dd>
+<dd>Who were the strugglers, what war did they wage,</dd>
+</dl>
+</dd>
+<dd>Whose savage trample thus could pad the dank</dd>
+<dd>Soil to a plash? Toads in a poisoned tank,
+<dl>
+<dd>Or wild cats in a red-hot iron cage—</dd>
+</dl>
+</dd>
+</dl>
+<p><br /></p>
+<dl>
+<dd>
+<dl>
+<dd>
+<dl>
+<dd>XXIII.</dd>
+</dl>
+</dd>
+</dl>
+</dd>
+<dd>The fight must so have seemed in that fell cirque.
+<dl>
+<dd>What penned them there, with all the plain to choose?</dd>
+<dd>No foot-print leading to that horrid mews,</dd>
+</dl>
+</dd>
+<dd>None out of it. Mad brewage set to work</dd>
+<dd>Their brains, no doubt, like galley-slaves the Turk
+<dl>
+<dd>Pits for his pastime, Christians against Jews.</dd>
+</dl>
+</dd>
+</dl>
+<p><br /></p>
+<dl>
+<dd>
+<dl>
+<dd>
+<dl>
+<dd>XXIV.</dd>
+</dl>
+</dd>
+</dl>
+</dd>
+<dd>And more than that - a furlong on - why, there!
+<dl>
+<dd>What bad use was that engine for, that wheel,</dd>
+<dd>Or brake, not wheel - that harrow fit to reel</dd>
+</dl>
+</dd>
+<dd>Men's bodies out like silk? with all the air</dd>
+<dd>Of Tophet's tool, on earth left unaware,
+<dl>
+<dd>Or brought to sharpen its rusty teeth of steel.</dd>
+</dl>
+</dd>
+</dl>
+<p><br /></p>
+<dl>
+<dd>
+<dl>
+<dd>
+<dl>
+<dd>XXV.</dd>
+</dl>
+</dd>
+</dl>
+</dd>
+<dd>Then came a bit of stubbed ground, once a wood,
+<dl>
+<dd>Next a marsh, it would seem, and now mere earth</dd>
+<dd>Desperate and done with; (so a fool finds mirth,</dd>
+</dl>
+</dd>
+<dd>Makes a thing and then mars it, till his mood</dd>
+<dd>Changes and off he goes!) within a rood—
+<dl>
+<dd>Bog, clay and rubble, sand and stark black dearth.</dd>
+</dl>
+</dd>
+</dl>
+<p><br /></p>
+<dl>
+<dd>
+<dl>
+<dd>
+<dl>
+<dd>XXVI.</dd>
+</dl>
+</dd>
+</dl>
+</dd>
+<dd>Now blotches rankling, coloured gay and grim,
+<dl>
+<dd>Now patches where some leanness of the soil's</dd>
+<dd>Broke into moss or substances like boils;</dd>
+</dl>
+</dd>
+<dd>Then came some palsied oak, a cleft in him</dd>
+<dd>Like a distorted mouth that splits its rim
+<dl>
+<dd>Gaping at death, and dies while it recoils.</dd>
+</dl>
+</dd>
+</dl>
+<p><br /></p>
+<dl>
+<dd>
+<dl>
+<dd>
+<dl>
+<dd>XXVII.</dd>
+</dl>
+</dd>
+</dl>
+</dd>
+<dd>And just as far as ever from the end!
+<dl>
+<dd>Nought in the distance but the evening, nought</dd>
+<dd>To point my footstep further! At the thought,</dd>
+</dl>
+</dd>
+<dd>A great black bird, Apollyon's bosom-friend,</dd>
+<dd>Sailed past, nor beat his wide wing dragon-penned
+<dl>
+<dd>That brushed my cap—perchance the guide I sought.</dd>
+</dl>
+</dd>
+</dl>
+<p><br /></p>
+<dl>
+<dd>
+<dl>
+<dd>
+<dl>
+<dd>XXVIII.</dd>
+</dl>
+</dd>
+</dl>
+</dd>
+<dd>For, looking up, aware I somehow grew,
+<dl>
+<dd>'Spite of the dusk, the plain had given place</dd>
+<dd>All round to mountains - with such name to grace</dd>
+</dl>
+</dd>
+<dd>Mere ugly heights and heaps now stolen in view.</dd>
+<dd>How thus they had surprised me, - solve it, you!
+<dl>
+<dd>How to get from them was no clearer case.</dd>
+</dl>
+</dd>
+</dl>
+<p><br /></p>
+<dl>
+<dd>
+<dl>
+<dd>
+<dl>
+<dd>XXIX.</dd>
+</dl>
+</dd>
+</dl>
+</dd>
+<dd>Yet half I seemed to recognise some trick
+<dl>
+<dd>Of mischief happened to me, God knows when—</dd>
+<dd>In a bad dream perhaps. Here ended, then,</dd>
+</dl>
+</dd>
+<dd>Progress this way. When, in the very nick</dd>
+<dd>Of giving up, one time more, came a click
+<dl>
+<dd>As when a trap shuts - you're inside the den!</dd>
+</dl>
+</dd>
+</dl>
+<p><br /></p>
+<dl>
+<dd>
+<dl>
+<dd>
+<dl>
+<dd>XXX.</dd>
+</dl>
+</dd>
+</dl>
+</dd>
+<dd>Burningly it came on me all at once,
+<dl>
+<dd>This was the place! those two hills on the right,</dd>
+<dd>Crouched like two bulls locked horn in horn in fight;</dd>
+</dl>
+</dd>
+<dd>While to the left, a tall scalped mountain... Dunce,</dd>
+<dd>Dotard, a-dozing at the very nonce,
+<dl>
+<dd>After a life spent training for the sight!</dd>
+</dl>
+</dd>
+</dl>
+<p><br /></p>
+<dl>
+<dd>
+<dl>
+<dd>
+<dl>
+<dd>XXXI.</dd>
+</dl>
+</dd>
+</dl>
+</dd>
+<dd>What in the midst lay but the Tower itself?
+<dl>
+<dd>The round squat turret, blind as the fool's heart</dd>
+<dd>Built of brown stone, without a counterpart</dd>
+</dl>
+</dd>
+<dd>In the whole world. The tempest's mocking elf</dd>
+<dd>Points to the shipman thus the unseen shelf
+<dl>
+<dd>He strikes on, only when the timbers start.</dd>
+</dl>
+</dd>
+</dl>
+<p><br /></p>
+<dl>
+<dd>
+<dl>
+<dd>
+<dl>
+<dd>XXXII.</dd>
+</dl>
+</dd>
+</dl>
+</dd>
+<dd>Not see? because of night perhaps? - why, day
+<dl>
+<dd>Came back again for that! before it left,</dd>
+<dd>The dying sunset kindled through a cleft:</dd>
+</dl>
+</dd>
+<dd>The hills, like giants at a hunting, lay</dd>
+<dd>Chin upon hand, to see the game at bay,—
+<dl>
+<dd>"Now stab and end the creature - to the heft!"</dd>
+</dl>
+</dd>
+</dl>
+<p><br /></p>
+<dl>
+<dd>
+<dl>
+<dd>
+<dl>
+<dd>XXXIII.</dd>
+</dl>
+</dd>
+</dl>
+</dd>
+<dd>Not hear? when noise was everywhere! it tolled
+<dl>
+<dd>Increasing like a bell. Names in my ears</dd>
+<dd>Of all the lost adventurers my peers,—</dd>
+</dl>
+</dd>
+<dd>How such a one was strong, and such was bold,</dd>
+<dd>And such was fortunate, yet each of old
+<dl>
+<dd>Lost, lost! one moment knelled the woe of years.</dd>
+</dl>
+</dd>
+</dl>
+<p><br /></p>
+<dl>
+<dd>
+<dl>
+<dd>
+<dl>
+<dd>XXXIV.</dd>
+</dl>
+</dd>
+</dl>
+</dd>
+<dd>There they stood, ranged along the hillsides, met
+<dl>
+<dd>To view the last of me, a living frame</dd>
+<dd>For one more picture! in a sheet of flame</dd>
+</dl>
+</dd>
+<dd>I saw them and I knew them all. And yet</dd>
+<dd>Dauntless the slug-horn to my lips I set,
+<dl>
+<dd>And blew "<i>Childe Roland to the Dark Tower came.</i>"</dd>
+</dl>
+</dd>
+</dl>
+</body>
+</html>
diff --git a/toolkit/modules/tests/browser/file_WebNavigation_page1.html b/toolkit/modules/tests/browser/file_WebNavigation_page1.html
new file mode 100644
index 000000000..1b6869756
--- /dev/null
+++ b/toolkit/modules/tests/browser/file_WebNavigation_page1.html
@@ -0,0 +1,9 @@
+<!DOCTYPE HTML>
+
+<html>
+<body>
+
+<iframe src="file_WebNavigation_page2.html" width="200" height="200"></iframe>
+
+</body>
+</html>
diff --git a/toolkit/modules/tests/browser/file_WebNavigation_page2.html b/toolkit/modules/tests/browser/file_WebNavigation_page2.html
new file mode 100644
index 000000000..cc1acc83d
--- /dev/null
+++ b/toolkit/modules/tests/browser/file_WebNavigation_page2.html
@@ -0,0 +1,7 @@
+<!DOCTYPE HTML>
+
+<html>
+<body>
+
+</body>
+</html>
diff --git a/toolkit/modules/tests/browser/file_WebNavigation_page3.html b/toolkit/modules/tests/browser/file_WebNavigation_page3.html
new file mode 100644
index 000000000..a0a26a2e9
--- /dev/null
+++ b/toolkit/modules/tests/browser/file_WebNavigation_page3.html
@@ -0,0 +1,9 @@
+<!DOCTYPE HTML>
+
+<html>
+<body>
+
+<a id="elt" href="file_WebNavigation_page3.html#ref">click me</a>
+
+</body>
+</html>
diff --git a/toolkit/modules/tests/browser/file_WebRequest_page1.html b/toolkit/modules/tests/browser/file_WebRequest_page1.html
new file mode 100644
index 000000000..00a0b9b4b
--- /dev/null
+++ b/toolkit/modules/tests/browser/file_WebRequest_page1.html
@@ -0,0 +1,29 @@
+<!DOCTYPE HTML>
+
+<html>
+<head>
+<meta charset="utf-8">
+<link rel="stylesheet" href="file_style_good.css">
+<link rel="stylesheet" href="file_style_bad.css">
+<link rel="stylesheet" href="file_style_redirect.css">
+</head>
+<body>
+
+<div id="test">Sample text</div>
+
+<img id="img_good" src="file_image_good.png">
+<img id="img_bad" src="file_image_bad.png">
+<img id="img_redirect" src="file_image_redirect.png">
+
+<script src="file_script_good.js"></script>
+<script src="file_script_bad.js"></script>
+<script src="file_script_redirect.js"></script>
+
+<script src="file_script_xhr.js"></script>
+
+<script src="nonexistent_script_url.js"></script>
+
+<iframe src="file_WebRequest_page2.html" width="200" height="200"></iframe>
+<iframe src="WebRequest_redirection.sjs" width="200" height="50"></iframe>
+</body>
+</html>
diff --git a/toolkit/modules/tests/browser/file_WebRequest_page2.html b/toolkit/modules/tests/browser/file_WebRequest_page2.html
new file mode 100644
index 000000000..b2cf48f9e
--- /dev/null
+++ b/toolkit/modules/tests/browser/file_WebRequest_page2.html
@@ -0,0 +1,25 @@
+<!DOCTYPE HTML>
+
+<html>
+<head>
+<meta charset="utf-8">
+<link rel="stylesheet" href="file_style_good.css">
+<link rel="stylesheet" href="file_style_bad.css">
+<link rel="stylesheet" href="file_style_redirect.css">
+</head>
+<body>
+
+<div class="test">Sample text</div>
+
+<img id="img_good" src="file_image_good.png">
+<img id="img_bad" src="file_image_bad.png">
+<img id="img_redirect" src="file_image_redirect.png">
+
+<script src="file_script_good.js"></script>
+<script src="file_script_bad.js"></script>
+<script src="file_script_redirect.js"></script>
+
+<script src="nonexistent_script_url.js"></script>
+
+</body>
+</html>
diff --git a/toolkit/modules/tests/browser/file_image_bad.png b/toolkit/modules/tests/browser/file_image_bad.png
new file mode 100644
index 000000000..4c3be5084
--- /dev/null
+++ b/toolkit/modules/tests/browser/file_image_bad.png
diff --git a/toolkit/modules/tests/browser/file_image_good.png b/toolkit/modules/tests/browser/file_image_good.png
new file mode 100644
index 000000000..769c63634
--- /dev/null
+++ b/toolkit/modules/tests/browser/file_image_good.png
diff --git a/toolkit/modules/tests/browser/file_image_redirect.png b/toolkit/modules/tests/browser/file_image_redirect.png
new file mode 100644
index 000000000..4c3be5084
--- /dev/null
+++ b/toolkit/modules/tests/browser/file_image_redirect.png
diff --git a/toolkit/modules/tests/browser/file_script_bad.js b/toolkit/modules/tests/browser/file_script_bad.js
new file mode 100644
index 000000000..90655f136
--- /dev/null
+++ b/toolkit/modules/tests/browser/file_script_bad.js
@@ -0,0 +1 @@
+window.failure = true;
diff --git a/toolkit/modules/tests/browser/file_script_good.js b/toolkit/modules/tests/browser/file_script_good.js
new file mode 100644
index 000000000..b128e54a1
--- /dev/null
+++ b/toolkit/modules/tests/browser/file_script_good.js
@@ -0,0 +1 @@
+window.success = window.success ? window.success + 1 : 1;
diff --git a/toolkit/modules/tests/browser/file_script_redirect.js b/toolkit/modules/tests/browser/file_script_redirect.js
new file mode 100644
index 000000000..917b5d620
--- /dev/null
+++ b/toolkit/modules/tests/browser/file_script_redirect.js
@@ -0,0 +1,2 @@
+window.failure = true;
+
diff --git a/toolkit/modules/tests/browser/file_script_xhr.js b/toolkit/modules/tests/browser/file_script_xhr.js
new file mode 100644
index 000000000..bc1f65eae
--- /dev/null
+++ b/toolkit/modules/tests/browser/file_script_xhr.js
@@ -0,0 +1,3 @@
+var request = new XMLHttpRequest();
+request.open("get", "http://example.com/browser/toolkit/modules/tests/browser/xhr_resource", false);
+request.send();
diff --git a/toolkit/modules/tests/browser/file_style_bad.css b/toolkit/modules/tests/browser/file_style_bad.css
new file mode 100644
index 000000000..8dbc8dc7a
--- /dev/null
+++ b/toolkit/modules/tests/browser/file_style_bad.css
@@ -0,0 +1,3 @@
+#test {
+  color: green !important;
+}
diff --git a/toolkit/modules/tests/browser/file_style_good.css b/toolkit/modules/tests/browser/file_style_good.css
new file mode 100644
index 000000000..46f9774b5
--- /dev/null
+++ b/toolkit/modules/tests/browser/file_style_good.css
@@ -0,0 +1,3 @@
+#test {
+  color: red;
+}
diff --git a/toolkit/modules/tests/browser/file_style_redirect.css b/toolkit/modules/tests/browser/file_style_redirect.css
new file mode 100644
index 000000000..8dbc8dc7a
--- /dev/null
+++ b/toolkit/modules/tests/browser/file_style_redirect.css
@@ -0,0 +1,3 @@
+#test {
+  color: green !important;
+}
diff --git a/toolkit/modules/tests/browser/head.js b/toolkit/modules/tests/browser/head.js
new file mode 100644
index 000000000..777e087e1
--- /dev/null
+++ b/toolkit/modules/tests/browser/head.js
@@ -0,0 +1,23 @@
+function removeDupes(list)
+{
+  let j = 0;
+  for (let i = 1; i < list.length; i++) {
+    if (list[i] != list[j]) {
+      j++;
+      if (i != j) {
+        list[j] = list[i];
+      }
+    }
+  }
+  list.length = j + 1;
+}
+
+function compareLists(list1, list2, kind)
+{
+  list1.sort();
+  removeDupes(list1);
+  list2.sort();
+  removeDupes(list2);
+  is(String(list1), String(list2), `${kind} URLs correct`);
+}
+
diff --git a/toolkit/modules/tests/browser/metadata_simple.html b/toolkit/modules/tests/browser/metadata_simple.html
new file mode 100644
index 000000000..18089e399
--- /dev/null
+++ b/toolkit/modules/tests/browser/metadata_simple.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>Test Title</title>
+    <meta property="description" content="A very simple test page">
+  </head>
+  <body>
+    Llama.
+  </body>
+</html>
diff --git a/toolkit/modules/tests/browser/metadata_titles.html b/toolkit/modules/tests/browser/metadata_titles.html
new file mode 100644
index 000000000..bd4201304
--- /dev/null
+++ b/toolkit/modules/tests/browser/metadata_titles.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>Test Titles</title>
+    <meta property="description" content="A very simple test page" />
+    <meta property="og:title" content="Title" />
+  </head>
+  <body>
+    Llama.
+  </body>
+</html>
diff --git a/toolkit/modules/tests/browser/metadata_titles_fallback.html b/toolkit/modules/tests/browser/metadata_titles_fallback.html
new file mode 100644
index 000000000..5b71879b2
--- /dev/null
+++ b/toolkit/modules/tests/browser/metadata_titles_fallback.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta property="description" content="A very simple test page" />
+    <meta property="og:title" content="Title" />
+  </head>
+  <body>
+    Llama.
+  </body>
+</html>
diff --git a/toolkit/modules/tests/browser/testremotepagemanager.html b/toolkit/modules/tests/browser/testremotepagemanager.html
new file mode 100644
index 000000000..4303a38f5
--- /dev/null
+++ b/toolkit/modules/tests/browser/testremotepagemanager.html
@@ -0,0 +1,66 @@
+<!DOCTYPE HTML>
+
+<html>
+<head>
+<script type="text/javascript">
+addMessageListener("Ping", function(message) {
+  sendAsyncMessage("Pong", {
+    str: message.data.str,
+    counter: message.data.counter + 1
+  });
+});
+
+addMessageListener("Ping2", function(message) {
+  sendAsyncMessage("Pong2", message.data);
+});
+
+function neverCalled() {
+  sendAsyncMessage("Pong3");
+}
+addMessageListener("Pong3", neverCalled);
+removeMessageListener("Pong3", neverCalled);
+
+function testData(data) {
+  var response = {
+    result: true,
+    status: "All data correctly received"
+  }
+
+  function compare(prop, expected) {
+    if (uneval(data[prop]) == uneval(expected))
+      return;
+    if (response.result)
+      response.status = "";
+    response.result = false;
+    response.status += "Property " + prop + " should have been " + expected + " but was " + data[prop] + "\n";
+  }
+
+  compare("integer", 45);
+  compare("real", 45.78);
+  compare("str", "foobar");
+  compare("array", [1, 2, 3, 5, 27]);
+
+  return response;
+}
+
+addMessageListener("SendData", function(message) {
+  sendAsyncMessage("ReceivedData", testData(message.data));
+});
+
+addMessageListener("SendData2", function(message) {
+  sendAsyncMessage("ReceivedData2", testData(message.data.data));
+});
+
+var cookie = "nom";
+addMessageListener("SetCookie", function(message) {
+  cookie = message.data.value;
+});
+
+addMessageListener("GetCookie", function(message) {
+  sendAsyncMessage("Cookie", { value: cookie });
+});
+</script>
+</head>
+<body>
+</body>
+</html>
diff --git a/toolkit/modules/tests/chrome/.eslintrc.js b/toolkit/modules/tests/chrome/.eslintrc.js
new file mode 100644
index 000000000..2c669d844
--- /dev/null
+++ b/toolkit/modules/tests/chrome/.eslintrc.js
@@ -0,0 +1,7 @@
+"use strict";
+
+module.exports = {
+  "extends": [
+    "../../../../testing/mochitest/chrome.eslintrc.js"
+  ]
+};
diff --git a/toolkit/modules/tests/chrome/chrome.ini b/toolkit/modules/tests/chrome/chrome.ini
new file mode 100644
index 000000000..a27230919
--- /dev/null
+++ b/toolkit/modules/tests/chrome/chrome.ini
@@ -0,0 +1,3 @@
+[DEFAULT]
+
+[test_bug544442_checkCert.xul]
diff --git a/toolkit/modules/tests/chrome/test_bug544442_checkCert.xul b/toolkit/modules/tests/chrome/test_bug544442_checkCert.xul
new file mode 100644
index 000000000..dd0ce8fbd
--- /dev/null
+++ b/toolkit/modules/tests/chrome/test_bug544442_checkCert.xul
@@ -0,0 +1,155 @@
+<?xml version="1.0"?>
+<!--
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+-->
+
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css" type="text/css"?>
+
+<window title="Test CertUtils.jsm checkCert - bug 340198 and bug 544442"
+        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+        onload="testStart();">
+<script type="application/javascript"
+        src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>
+
+<script type="application/javascript">
+<![CDATA[
+
+var Cc = Components.classes;
+var Ci = Components.interfaces;
+var Cr = Components.results;
+
+SimpleTest.waitForExplicitFinish();
+
+Components.utils.import("resource://gre/modules/CertUtils.jsm");
+
+function testStart() {
+  ok(true, "Entering testStart");
+
+  var request = Cc["@mozilla.org/xmlextras/xmlhttprequest;1"].
+                createInstance(Ci.nsIXMLHttpRequest);
+  request.open("GET", "https://example.com/", true);
+  request.channel.notificationCallbacks = new BadCertHandler(true);
+  request.onerror = function(event) { testXHRError(event); };
+  request.onload = function(event) { testXHRLoad(event); };
+  request.send(null);
+}
+
+function testXHRError(aEvent) {
+  ok(true, "Entering testXHRError - something went wrong");
+
+  var request = aEvent.target;
+  var status = 0;
+  try {
+    status = request.status;
+  }
+  catch (e) {
+  }
+
+  if (status == 0)
+    status = request.channel.QueryInterface(Ci.nsIRequest).status;
+
+  ok(false, "XHR onerror called: " + status);
+
+  SimpleTest.finish();
+}
+
+function getCheckCertResult(aChannel, aAllowNonBuiltIn, aCerts) {
+  try {
+    checkCert(aChannel, aAllowNonBuiltIn, aCerts);
+  }
+  catch (e) {
+    return e.result;
+  }
+  return Cr.NS_OK;
+}
+
+function testXHRLoad(aEvent) {
+  ok(true, "Entering testXHRLoad");
+
+  var channel = aEvent.target.channel;
+
+  var certs = null;
+  is(getCheckCertResult(channel, false, certs), Cr.NS_ERROR_ABORT,
+     "checkCert should throw NS_ERROR_ABORT when the certificate attributes " +
+     "array passed to checkCert is null and the certificate is not builtin");
+
+  is(getCheckCertResult(channel, true, certs), Cr.NS_OK,
+     "checkCert should not throw when the certificate attributes array " +
+     "passed to checkCert is null and builtin certificates aren't enforced");
+
+  certs = [ { invalidAttribute: "Invalid attribute" } ];
+  is(getCheckCertResult(channel, false, certs), Cr.NS_ERROR_ILLEGAL_VALUE,
+     "checkCert should throw NS_ERROR_ILLEGAL_VALUE when the certificate " +
+     "attributes array passed to checkCert has an element that has an " +
+     "attribute that does not exist on the certificate");
+
+  certs = [ { issuerName: "Incorrect issuerName" } ];
+  is(getCheckCertResult(channel, false, certs), Cr.NS_ERROR_ILLEGAL_VALUE,
+     "checkCert should throw NS_ERROR_ILLEGAL_VALUE when the certificate " +
+     "attributes array passed to checkCert has an element that has an " +
+     "issuerName that is not the same as the certificate's");
+
+  var cert = channel.securityInfo.QueryInterface(Ci.nsISSLStatusProvider).
+             SSLStatus.QueryInterface(Ci.nsISSLStatus).serverCert;
+
+  certs = [ { issuerName: cert.issuerName,
+              commonName: cert.commonName } ];
+  is(getCheckCertResult(channel, false, certs), Cr.NS_ERROR_ABORT,
+     "checkCert should throw NS_ERROR_ABORT when the certificate attributes " +
+     "array passed to checkCert has a single element that has the same " +
+     "issuerName and commonName as the certificate's and the certificate is " +
+     "not builtin");
+
+  is(getCheckCertResult(channel, true, certs), Cr.NS_OK,
+     "checkCert should not throw when the certificate attributes array " +
+     "passed to checkCert has a single element that has the same issuerName " +
+     "and commonName as the certificate's and and builtin certificates " +
+     "aren't enforced");
+
+  certs = [ { issuerName: "Incorrect issuerName",
+              invalidAttribute: "Invalid attribute" },
+            { issuerName: cert.issuerName,
+              commonName: "Invalid Common Name" },
+            { issuerName: cert.issuerName,
+              commonName: cert.commonName } ];
+  is(getCheckCertResult(channel, false, certs), Cr.NS_ERROR_ABORT,
+     "checkCert should throw NS_ERROR_ABORT when the certificate attributes " +
+     "array passed to checkCert has an element that has the same issuerName " +
+     "and commonName as the certificate's and the certificate is not builtin");
+
+  is(getCheckCertResult(channel, true, certs), Cr.NS_OK,
+     "checkCert should not throw when the certificate attributes array " +
+     "passed to checkCert has an element that has the same issuerName and " +
+     "commonName as the certificate's and builtin certificates aren't enforced");
+
+  var mockChannel = { originalURI: Cc["@mozilla.org/network/io-service;1"].
+                                   getService(Ci.nsIIOService).
+                                   newURI("http://example.com/", null, null) };
+
+  certs = [ ];
+  is(getCheckCertResult(mockChannel, false, certs), Cr.NS_ERROR_UNEXPECTED,
+     "checkCert should throw NS_ERROR_UNEXPECTED when the certificate " +
+     "attributes array passed to checkCert is not null and the channel's " +
+     "originalURI is not https");
+
+  certs = null;
+  is(getCheckCertResult(mockChannel, false, certs), Cr.NS_OK,
+     "checkCert should not throw when the certificate attributes object " +
+     "passed to checkCert is null and the the channel's originalURI is not " +
+     "https");
+
+  SimpleTest.finish();
+}
+
+]]>
+</script>
+
+<body xmlns="http://www.w3.org/1999/xhtml">
+  <p id="display"></p>
+  <div id="content" style="display: none"></div>
+  <pre id="test"></pre>
+</body>
+</window>
diff --git a/toolkit/modules/tests/mochitest/.eslintrc.js b/toolkit/modules/tests/mochitest/.eslintrc.js
new file mode 100644
index 000000000..3c788d6d6
--- /dev/null
+++ b/toolkit/modules/tests/mochitest/.eslintrc.js
@@ -0,0 +1,7 @@
+"use strict";
+
+module.exports = {
+  "extends": [
+    "../../../../testing/mochitest/mochitest.eslintrc.js"
+  ]
+};
diff --git a/toolkit/modules/tests/mochitest/mochitest.ini b/toolkit/modules/tests/mochitest/mochitest.ini
new file mode 100644
index 000000000..852d95539
--- /dev/null
+++ b/toolkit/modules/tests/mochitest/mochitest.ini
@@ -0,0 +1,3 @@
+[DEFAULT]
+
+[test_spatial_navigation.html]
diff --git a/toolkit/modules/tests/mochitest/test_spatial_navigation.html b/toolkit/modules/tests/mochitest/test_spatial_navigation.html
new file mode 100644
index 000000000..c1fbb0eec
--- /dev/null
+++ b/toolkit/modules/tests/mochitest/test_spatial_navigation.html
@@ -0,0 +1,76 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=698437
+-->
+<head>
+  <meta charset="utf-8">
+  <title>Test for Bug 698437</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="/tests/SimpleTest/EventUtils.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+  <script type="application/javascript">
+
+  /** Test for Bug 698437 **/
+
+  SimpleTest.waitForExplicitFinish();
+
+  function Test() {
+    if (!SpecialPowers.getBoolPref("snav.enabled")) {
+      todo(false, "Enable spatial navigiation on this platform.");
+      SimpleTest.finish();
+      return;
+    }
+
+    var center = document.getElementById("center");
+    var right = document.getElementById("right");
+    var left = document.getElementById("left");
+    var top = document.getElementById("top");
+    var bottom = document.getElementById("bottom");
+
+    console.log(top);
+    console.log(bottom);
+    console.log(center);
+    console.log(left);
+    console.log(right);
+
+    center.focus();
+    is(center.id, document.activeElement.id, "How did we call focus on center and it did" +
+                                             " not become the active element?");
+
+    synthesizeKey("VK_UP", { });
+    is(document.activeElement.id, top.id,
+       "Spatial navigation up key is not handled correctly.");
+
+    center.focus();
+    synthesizeKey("VK_DOWN", { });
+    is(document.activeElement.id, bottom.id,
+       "Spatial navigation down key is not handled correctly.");
+
+    center.focus();
+    synthesizeKey("VK_RIGHT", { });
+    is(document.activeElement.id, right.id,
+       "Spatial navigation right key is not handled correctly.");
+
+    center.focus();
+    synthesizeKey("VK_LEFT", { });
+    is(document.activeElement.id, left.id,
+       "Spatial navigation left key is not handled correctly.");
+
+    SimpleTest.finish();
+  }
+
+  </script>
+</head>
+<body onload="Test();">
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=698437">Mozilla Bug 698437</a>
+<p id="display"></p>
+<div id="content">
+  <button id="lefttop">1</button><button id="top">2</button><button id="righttop">3</button><br>
+  <button id="left">4</button><button id="center">5</button><button id="right">6</button><br>
+  <button id="leftbottom">7</button><button id="bottom">8</button><button id="rightbottom">9</button><br>
+</div>
+<pre id="test">
+</pre>
+</body>
+</html>
diff --git a/toolkit/modules/tests/xpcshell/.eslintrc.js b/toolkit/modules/tests/xpcshell/.eslintrc.js
new file mode 100644
index 000000000..fee088c17
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/.eslintrc.js
@@ -0,0 +1,7 @@
+"use strict";
+
+module.exports = {
+  "extends": [
+    "../../../../testing/xpcshell/xpcshell.eslintrc.js"
+  ]
+};
diff --git a/toolkit/modules/tests/xpcshell/TestIntegration.jsm b/toolkit/modules/tests/xpcshell/TestIntegration.jsm
new file mode 100644
index 000000000..78a0b7267
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/TestIntegration.jsm
@@ -0,0 +1,42 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/*
+ * Internal module used to test the generation of Integration.jsm getters.
+ */
+
+"use strict";
+
+this.EXPORTED_SYMBOLS = [
+  "TestIntegration",
+];
+
+const { classes: Cc, interfaces: Ci, utils: Cu, results: Cr } = Components;
+
+Cu.import("resource://gre/modules/Task.jsm");
+
+this.TestIntegration = {
+  value: "value",
+
+  get valueFromThis() {
+    return this.value;
+  },
+
+  get property() {
+    return this._property;
+  },
+
+  set property(value) {
+    this._property = value;
+  },
+
+  method(argument) {
+    this.methodArgument = argument;
+    return "method" + argument;
+  },
+
+  asyncMethod: Task.async(function* (argument) {
+    this.asyncMethodArgument = argument;
+    return "asyncMethod" + argument;
+  }),
+};
diff --git a/toolkit/modules/tests/xpcshell/chromeappsstore.sqlite b/toolkit/modules/tests/xpcshell/chromeappsstore.sqlite
new file mode 100644
index 000000000..15d309df5
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/chromeappsstore.sqlite
diff --git a/toolkit/modules/tests/xpcshell/propertyLists/bug710259_propertyListBinary.plist b/toolkit/modules/tests/xpcshell/propertyLists/bug710259_propertyListBinary.plist
new file mode 100644
index 000000000..5888c9c9c
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/propertyLists/bug710259_propertyListBinary.plist
diff --git a/toolkit/modules/tests/xpcshell/propertyLists/bug710259_propertyListXML.plist b/toolkit/modules/tests/xpcshell/propertyLists/bug710259_propertyListXML.plist
new file mode 100644
index 000000000..9b6decc1e
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/propertyLists/bug710259_propertyListXML.plist
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>Boolean</key>
+	<false/>
+	<key>Array</key>
+	<array>
+		<string>abc</string>
+		<string>aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa</string>
+		<string>אאא</string>
+		<string>אאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאאא</string>
+		<string>𐀀𐀀𐀀</string>
+		<date>2011-12-31T11:15:23Z</date>
+		<data>MjAxMS0xMi0zMVQxMToxNTozM1o=</data>
+		<dict>
+			<key>Negative Number</key>
+			<integer>-400</integer>
+			<key>Real Number</key>
+			<real>2.71828183</real>
+			<key>Big Int</key>
+			<integer>9007199254740993</integer>
+			<key>Negative Big Int</key>
+			<integer>-9007199254740993</integer>
+		</dict>
+	</array>
+</dict>
+</plist>
diff --git a/toolkit/modules/tests/xpcshell/test_BinarySearch.js b/toolkit/modules/tests/xpcshell/test_BinarySearch.js
new file mode 100644
index 000000000..f48b0bccf
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_BinarySearch.js
@@ -0,0 +1,81 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+Components.utils.import("resource://gre/modules/BinarySearch.jsm");
+
+function run_test() {
+  // empty array
+  ok([], 1, false, 0);
+
+  // one-element array
+  ok([2], 2, true, 0);
+  ok([2], 1, false, 0);
+  ok([2], 3, false, 1);
+
+  // two-element array
+  ok([2, 4], 2, true, 0);
+  ok([2, 4], 4, true, 1);
+  ok([2, 4], 1, false, 0);
+  ok([2, 4], 3, false, 1);
+  ok([2, 4], 5, false, 2);
+
+  // three-element array
+  ok([2, 4, 6], 2, true, 0);
+  ok([2, 4, 6], 4, true, 1);
+  ok([2, 4, 6], 6, true, 2);
+  ok([2, 4, 6], 1, false, 0);
+  ok([2, 4, 6], 3, false, 1);
+  ok([2, 4, 6], 5, false, 2);
+  ok([2, 4, 6], 7, false, 3);
+
+  // duplicates
+  ok([2, 2], 2, true, 0);
+  ok([2, 2], 1, false, 0);
+  ok([2, 2], 3, false, 2);
+
+  // duplicates on the left
+  ok([2, 2, 4], 2, true, 1);
+  ok([2, 2, 4], 4, true, 2);
+  ok([2, 2, 4], 1, false, 0);
+  ok([2, 2, 4], 3, false, 2);
+  ok([2, 2, 4], 5, false, 3);
+
+  // duplicates on the right
+  ok([2, 4, 4], 2, true, 0);
+  ok([2, 4, 4], 4, true, 1);
+  ok([2, 4, 4], 1, false, 0);
+  ok([2, 4, 4], 3, false, 1);
+  ok([2, 4, 4], 5, false, 3);
+
+  // duplicates in the middle
+  ok([2, 4, 4, 6], 2, true, 0);
+  ok([2, 4, 4, 6], 4, true, 1);
+  ok([2, 4, 4, 6], 6, true, 3);
+  ok([2, 4, 4, 6], 1, false, 0);
+  ok([2, 4, 4, 6], 3, false, 1);
+  ok([2, 4, 4, 6], 5, false, 3);
+  ok([2, 4, 4, 6], 7, false, 4);
+
+  // duplicates all around
+  ok([2, 2, 4, 4, 6, 6], 2, true, 0);
+  ok([2, 2, 4, 4, 6, 6], 4, true, 2);
+  ok([2, 2, 4, 4, 6, 6], 6, true, 4);
+  ok([2, 2, 4, 4, 6, 6], 1, false, 0);
+  ok([2, 2, 4, 4, 6, 6], 3, false, 2);
+  ok([2, 2, 4, 4, 6, 6], 5, false, 4);
+  ok([2, 2, 4, 4, 6, 6], 7, false, 6);
+}
+
+function ok(array, target, expectedFound, expectedIdx) {
+  let [found, idx] = BinarySearch.search(cmp, array, target);
+  do_check_eq(found, expectedFound);
+  do_check_eq(idx, expectedIdx);
+
+  idx = expectedFound ? expectedIdx : -1;
+  do_check_eq(BinarySearch.indexOf(cmp, array, target), idx);
+  do_check_eq(BinarySearch.insertionIndexOf(cmp, array, target), expectedIdx);
+}
+
+function cmp(num1, num2) {
+  return num1 - num2;
+}
diff --git a/toolkit/modules/tests/xpcshell/test_CanonicalJSON.js b/toolkit/modules/tests/xpcshell/test_CanonicalJSON.js
new file mode 100644
index 000000000..fa61f5a01
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_CanonicalJSON.js
@@ -0,0 +1,146 @@
+const { CanonicalJSON } = Components.utils.import("resource://gre/modules/CanonicalJSON.jsm");
+
+function stringRepresentation(obj) {
+  const clone = JSON.parse(JSON.stringify(obj));
+  return JSON.stringify(clone);
+}
+
+add_task(function* test_canonicalJSON_should_preserve_array_order() {
+  const input = ['one', 'two', 'three'];
+  // No sorting should be done on arrays.
+  do_check_eq(CanonicalJSON.stringify(input), '["one","two","three"]');
+});
+
+add_task(function* test_canonicalJSON_orders_object_keys() {
+  const input = [{
+    b: ['two', 'three'],
+    a: ['zero', 'one']
+  }];
+  do_check_eq(
+    CanonicalJSON.stringify(input),
+    '[{"a":["zero","one"],"b":["two","three"]}]'
+  );
+});
+
+add_task(function* test_canonicalJSON_orders_nested_object_keys() {
+  const input = [{
+    b: {d: 'd', c: 'c'},
+    a: {b: 'b', a: 'a'}
+  }];
+  do_check_eq(
+    CanonicalJSON.stringify(input),
+    '[{"a":{"a":"a","b":"b"},"b":{"c":"c","d":"d"}}]'
+  );
+});
+
+add_task(function* test_canonicalJSON_escapes_unicode_values() {
+  do_check_eq(
+    CanonicalJSON.stringify([{key: '✓'}]),
+    '[{"key":"\\u2713"}]'
+  );
+  // Unicode codepoints should be output in lowercase.
+  do_check_eq(
+    CanonicalJSON.stringify([{key: 'é'}]),
+    '[{"key":"\\u00e9"}]'
+  );
+});
+
+add_task(function* test_canonicalJSON_escapes_unicode_object_keys() {
+  do_check_eq(
+    CanonicalJSON.stringify([{'é': 'check'}]),
+    '[{"\\u00e9":"check"}]'
+  );
+});
+
+
+add_task(function* test_canonicalJSON_does_not_alter_input() {
+  const records = [
+    {'foo': 'bar', 'last_modified': '12345', 'id': '1'},
+    {'bar': 'baz', 'last_modified': '45678', 'id': '2'}
+  ];
+  const serializedJSON = JSON.stringify(records);
+  CanonicalJSON.stringify(records);
+  do_check_eq(JSON.stringify(records), serializedJSON);
+});
+
+
+add_task(function* test_canonicalJSON_preserves_data() {
+  const records = [
+    {'foo': 'bar', 'last_modified': '12345', 'id': '1'},
+    {'bar': 'baz', 'last_modified': '45678', 'id': '2'},
+  ]
+  const serialized = CanonicalJSON.stringify(records);
+  const expected = '[{"foo":"bar","id":"1","last_modified":"12345"},' +
+                   '{"bar":"baz","id":"2","last_modified":"45678"}]';
+  do_check_eq(CanonicalJSON.stringify(records), expected);
+});
+
+add_task(function* test_canonicalJSON_does_not_add_space_separators() {
+  const records = [
+    {'foo': 'bar', 'last_modified': '12345', 'id': '1'},
+    {'bar': 'baz', 'last_modified': '45678', 'id': '2'},
+  ]
+  const serialized = CanonicalJSON.stringify(records);
+  do_check_false(serialized.includes(" "));
+});
+
+add_task(function* test_canonicalJSON_serializes_empty_object() {
+  do_check_eq(CanonicalJSON.stringify({}), "{}");
+});
+
+add_task(function* test_canonicalJSON_serializes_empty_array() {
+  do_check_eq(CanonicalJSON.stringify([]), "[]");
+});
+
+add_task(function* test_canonicalJSON_serializes_NaN() {
+  do_check_eq(CanonicalJSON.stringify(NaN), "null");
+});
+
+add_task(function* test_canonicalJSON_serializes_inf() {
+  // This isn't part of the JSON standard.
+  do_check_eq(CanonicalJSON.stringify(Infinity), "null");
+});
+
+
+add_task(function* test_canonicalJSON_serializes_empty_string() {
+  do_check_eq(CanonicalJSON.stringify(""), '""');
+});
+
+add_task(function* test_canonicalJSON_escapes_backslashes() {
+  do_check_eq(CanonicalJSON.stringify("This\\and this"), '"This\\\\and this"');
+});
+
+add_task(function* test_canonicalJSON_handles_signed_zeros() {
+  // do_check_eq doesn't support comparison of -0 and 0 properly.
+  do_check_true(CanonicalJSON.stringify(-0) === '-0');
+  do_check_true(CanonicalJSON.stringify(0) === '0');
+});
+
+
+add_task(function* test_canonicalJSON_with_deeply_nested_dicts() {
+  const records = [{
+    'a': {
+      'b': 'b',
+      'a': 'a',
+      'c': {
+        'b': 'b',
+        'a': 'a',
+        'c': ['b', 'a', 'c'],
+        'd': {'b': 'b', 'a': 'a'},
+        'id': '1',
+        'e': 1,
+        'f': [2, 3, 1],
+        'g': {2: 2, 3: 3, 1: {
+          'b': 'b', 'a': 'a', 'c': 'c'}}}},
+    'id': '1'}]
+  const expected =
+    '[{"a":{"a":"a","b":"b","c":{"a":"a","b":"b","c":["b","a","c"],' +
+    '"d":{"a":"a","b":"b"},"e":1,"f":[2,3,1],"g":{' +
+    '"1":{"a":"a","b":"b","c":"c"},"2":2,"3":3},"id":"1"}},"id":"1"}]';
+
+  do_check_eq(CanonicalJSON.stringify(records), expected);
+});
+
+function run_test() {
+  run_next_test();
+}
diff --git a/toolkit/modules/tests/xpcshell/test_Color.js b/toolkit/modules/tests/xpcshell/test_Color.js
new file mode 100644
index 000000000..9bf9bf861
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_Color.js
@@ -0,0 +1,53 @@
+"use strict";
+
+Components.utils.import("resource://gre/modules/Color.jsm");
+
+function run_test() {
+  testRelativeLuminance();
+  testIsBright();
+  testContrastRatio();
+  testIsContrastRatioAcceptable();
+}
+
+function testRelativeLuminance() {
+  let c = new Color(0, 0, 0);
+  Assert.equal(c.relativeLuminance, 0, "Black is not illuminating");
+
+  c = new Color(255, 255, 255);
+  Assert.equal(c.relativeLuminance, 1, "White is quite the luminant one");
+
+  c = new Color(142, 42, 142);
+  Assert.equal(c.relativeLuminance, 0.25263952353998204,
+    "This purple is not that luminant");
+}
+
+function testIsBright() {
+  let c = new Color(0, 0, 0);
+  Assert.equal(c.isBright, 0, "Black is bright");
+
+  c = new Color(255, 255, 255);
+  Assert.equal(c.isBright, 1, "White is bright");
+}
+
+function testContrastRatio() {
+  let c = new Color(0, 0, 0);
+  let c2 = new Color(255, 255, 255);
+  Assert.equal(c.contrastRatio(c2), 21, "Contrast between black and white is max");
+  Assert.equal(c.contrastRatio(c), 1, "Contrast between equals is min");
+
+  let c3 = new Color(142, 42, 142);
+  Assert.equal(c.contrastRatio(c3), 6.05279047079964, "Contrast between black and purple");
+  Assert.equal(c2.contrastRatio(c3), 3.469474137806338, "Contrast between white and purple");
+}
+
+function testIsContrastRatioAcceptable() {
+  // Let's assert what browser.js is doing for window frames.
+  let c = new Color(...[55, 156, 152]);
+  let c2 = new Color(0, 0, 0);
+  Assert.equal(c.r, 55, "Reds should match");
+  Assert.equal(c.g, 156, "Greens should match");
+  Assert.equal(c.b, 152, "Blues should match");
+  Assert.ok(c.isContrastRatioAcceptable(c2), "The blue is high contrast enough");
+  c = new Color(...[35, 65, 100]);
+  Assert.ok(!c.isContrastRatioAcceptable(c2), "The blue is not high contrast enough");
+}
diff --git a/toolkit/modules/tests/xpcshell/test_DeferredTask.js b/toolkit/modules/tests/xpcshell/test_DeferredTask.js
new file mode 100644
index 000000000..441f9054c
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_DeferredTask.js
@@ -0,0 +1,390 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/**
+ * This file tests the DeferredTask.jsm module.
+ */
+
+// Globals
+
+var { classes: Cc, interfaces: Ci, utils: Cu, results: Cr } = Components;
+
+Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+
+XPCOMUtils.defineLazyModuleGetter(this, "DeferredTask",
+                                  "resource://gre/modules/DeferredTask.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "Promise",
+                                  "resource://gre/modules/Promise.jsm");
+
+/**
+ * Due to the nature of this module, most of the tests are time-dependent.  All
+ * the timeouts are designed to occur at multiples of this granularity value,
+ * in milliseconds, that should be high enough to prevent intermittent failures,
+ * but low enough to prevent an excessive overall test execution time.
+ */
+const T = 100;
+
+/**
+ * Waits for the specified timeout before resolving the returned promise.
+ */
+function promiseTimeout(aTimeoutMs)
+{
+  let deferred = Promise.defer();
+  do_timeout(aTimeoutMs, deferred.resolve);
+  return deferred.promise;
+}
+
+function run_test()
+{
+  run_next_test();
+}
+
+// Tests
+
+/**
+ * Creates a simple DeferredTask and executes it once.
+ */
+add_test(function test_arm_simple()
+{
+  new DeferredTask(run_next_test, 10).arm();
+});
+
+/**
+ * Checks that the delay set for the task is respected.
+ */
+add_test(function test_arm_delay_respected()
+{
+  let executed1 = false;
+  let executed2 = false;
+
+  new DeferredTask(function () {
+    executed1 = true;
+    do_check_false(executed2);
+  }, 1*T).arm();
+
+  new DeferredTask(function () {
+    executed2 = true;
+    do_check_true(executed1);
+    run_next_test();
+  }, 2*T).arm();
+});
+
+/**
+ * Checks that calling "arm" again does not introduce further delay.
+ */
+add_test(function test_arm_delay_notrestarted()
+{
+  let executed = false;
+
+  // Create a task that will run later.
+  let deferredTask = new DeferredTask(() => { executed = true; }, 4*T);
+  deferredTask.arm();
+
+  // Before the task starts, call "arm" again.
+  do_timeout(2*T, () => deferredTask.arm());
+
+  // The "arm" call should not have introduced further delays.
+  do_timeout(5*T, function () {
+    do_check_true(executed);
+    run_next_test();
+  });
+});
+
+/**
+ * Checks that a task runs only once when armed multiple times synchronously.
+ */
+add_test(function test_arm_coalesced()
+{
+  let executed = false;
+
+  let deferredTask = new DeferredTask(function () {
+    do_check_false(executed);
+    executed = true;
+    run_next_test();
+  }, 50);
+
+  deferredTask.arm();
+  deferredTask.arm();
+});
+
+/**
+ * Checks that a task runs only once when armed multiple times synchronously,
+ * even when it has been created with a delay of zero milliseconds.
+ */
+add_test(function test_arm_coalesced_nodelay()
+{
+  let executed = false;
+
+  let deferredTask = new DeferredTask(function () {
+    do_check_false(executed);
+    executed = true;
+    run_next_test();
+  }, 0);
+
+  deferredTask.arm();
+  deferredTask.arm();
+});
+
+/**
+ * Checks that a task can be armed again while running.
+ */
+add_test(function test_arm_recursive()
+{
+  let executed = false;
+
+  let deferredTask = new DeferredTask(function () {
+    if (!executed) {
+      executed = true;
+      deferredTask.arm();
+    } else {
+      run_next_test();
+    }
+  }, 50);
+
+  deferredTask.arm();
+});
+
+/**
+ * Checks that calling "arm" while an asynchronous task is running waits until
+ * the task is finished before restarting the delay.
+ */
+add_test(function test_arm_async()
+{
+  let finishedExecution = false;
+  let finishedExecutionAgain = false;
+
+  // Create a task that will run later.
+  let deferredTask = new DeferredTask(function* () {
+    yield promiseTimeout(4*T);
+    if (!finishedExecution) {
+      finishedExecution = true;
+    } else if (!finishedExecutionAgain) {
+      finishedExecutionAgain = true;
+    }
+  }, 2*T);
+  deferredTask.arm();
+
+  // While the task is running, call "arm" again.  This will result in a wait
+  // of 2*T until the task finishes, then another 2*T for the normal task delay
+  // specified on construction.
+  do_timeout(4*T, function () {
+    do_check_true(deferredTask.isRunning);
+    do_check_false(finishedExecution);
+    deferredTask.arm();
+  });
+
+  // This will fail in case the task was started without waiting 2*T after it
+  // has finished.
+  do_timeout(7*T, function () {
+    do_check_false(deferredTask.isRunning);
+    do_check_true(finishedExecution);
+  });
+
+  // This is in the middle of the second execution.
+  do_timeout(10*T, function () {
+    do_check_true(deferredTask.isRunning);
+    do_check_false(finishedExecutionAgain);
+  });
+
+  // Wait enough time to verify that the task was executed as expected.
+  do_timeout(13*T, function () {
+    do_check_false(deferredTask.isRunning);
+    do_check_true(finishedExecutionAgain);
+    run_next_test();
+  });
+});
+
+/**
+ * Checks that an armed task can be disarmed.
+ */
+add_test(function test_disarm()
+{
+  // Create a task that will run later.
+  let deferredTask = new DeferredTask(function () {
+    do_throw("This task should not run.");
+  }, 2*T);
+  deferredTask.arm();
+
+  // Disable execution later, but before the task starts.
+  do_timeout(1*T, () => deferredTask.disarm());
+
+  // Wait enough time to verify that the task did not run.
+  do_timeout(3*T, run_next_test);
+});
+
+/**
+ * Checks that calling "disarm" allows the delay to be restarted.
+ */
+add_test(function test_disarm_delay_restarted()
+{
+  let executed = false;
+
+  let deferredTask = new DeferredTask(() => { executed = true; }, 4*T);
+  deferredTask.arm();
+
+  do_timeout(2*T, function () {
+    deferredTask.disarm();
+    deferredTask.arm();
+  });
+
+  do_timeout(5*T, function () {
+    do_check_false(executed);
+  });
+
+  do_timeout(7*T, function () {
+    do_check_true(executed);
+    run_next_test();
+  });
+});
+
+/**
+ * Checks that calling "disarm" while an asynchronous task is running does not
+ * prevent the task to finish.
+ */
+add_test(function test_disarm_async()
+{
+  let finishedExecution = false;
+
+  let deferredTask = new DeferredTask(function* () {
+    deferredTask.arm();
+    yield promiseTimeout(2*T);
+    finishedExecution = true;
+  }, 1*T);
+  deferredTask.arm();
+
+  do_timeout(2*T, function () {
+    do_check_true(deferredTask.isRunning);
+    do_check_true(deferredTask.isArmed);
+    do_check_false(finishedExecution);
+    deferredTask.disarm();
+  });
+
+  do_timeout(4*T, function () {
+    do_check_false(deferredTask.isRunning);
+    do_check_false(deferredTask.isArmed);
+    do_check_true(finishedExecution);
+    run_next_test();
+  });
+});
+
+/**
+ * Checks that calling "arm" immediately followed by "disarm" while an
+ * asynchronous task is running does not cause it to run again.
+ */
+add_test(function test_disarm_immediate_async()
+{
+  let executed = false;
+
+  let deferredTask = new DeferredTask(function* () {
+    do_check_false(executed);
+    executed = true;
+    yield promiseTimeout(2*T);
+  }, 1*T);
+  deferredTask.arm();
+
+  do_timeout(2*T, function () {
+    do_check_true(deferredTask.isRunning);
+    do_check_false(deferredTask.isArmed);
+    deferredTask.arm();
+    deferredTask.disarm();
+  });
+
+  do_timeout(4*T, function () {
+    do_check_true(executed);
+    do_check_false(deferredTask.isRunning);
+    do_check_false(deferredTask.isArmed);
+    run_next_test();
+  });
+});
+
+/**
+ * Checks the isArmed and isRunning properties with a synchronous task.
+ */
+add_test(function test_isArmed_isRunning()
+{
+  let deferredTask = new DeferredTask(function () {
+    do_check_true(deferredTask.isRunning);
+    do_check_false(deferredTask.isArmed);
+    deferredTask.arm();
+    do_check_true(deferredTask.isArmed);
+    deferredTask.disarm();
+    do_check_false(deferredTask.isArmed);
+    run_next_test();
+  }, 50);
+
+  do_check_false(deferredTask.isArmed);
+  deferredTask.arm();
+  do_check_true(deferredTask.isArmed);
+  do_check_false(deferredTask.isRunning);
+});
+
+/**
+ * Checks that the "finalize" method executes a synchronous task.
+ */
+add_test(function test_finalize()
+{
+  let executed = false;
+  let timePassed = false;
+
+  let deferredTask = new DeferredTask(function () {
+    do_check_false(timePassed);
+    executed = true;
+  }, 2*T);
+  deferredTask.arm();
+
+  do_timeout(1*T, () => { timePassed = true; });
+
+  // This should trigger the immediate execution of the task.
+  deferredTask.finalize().then(function () {
+    do_check_true(executed);
+    run_next_test();
+  });
+});
+
+/**
+ * Checks that the "finalize" method executes the task again from start to
+ * finish in case it is already running.
+ */
+add_test(function test_finalize_executes_entirely()
+{
+  let executed = false;
+  let executedAgain = false;
+  let timePassed = false;
+
+  let deferredTask = new DeferredTask(function* () {
+    // The first time, we arm the timer again and set up the finalization.
+    if (!executed) {
+      deferredTask.arm();
+      do_check_true(deferredTask.isArmed);
+      do_check_true(deferredTask.isRunning);
+
+      deferredTask.finalize().then(function () {
+        // When we reach this point, the task must be finished.
+        do_check_true(executedAgain);
+        do_check_false(timePassed);
+        do_check_false(deferredTask.isArmed);
+        do_check_false(deferredTask.isRunning);
+        run_next_test();
+      });
+
+      // The second execution triggered by the finalization waits 1*T for the
+      // current task to finish (see the timeout below), but then it must not
+      // wait for the 2*T specified on construction as normal task delay.  The
+      // second execution will finish after the timeout below has passed again,
+      // for a total of 2*T of wait time.
+      do_timeout(3*T, () => { timePassed = true; });
+    }
+
+    yield promiseTimeout(1*T);
+
+    // Just before finishing, indicate if we completed the second execution.
+    if (executed) {
+      do_check_true(deferredTask.isRunning);
+      executedAgain = true;
+    } else {
+      executed = true;
+    }
+  }, 2*T);
+
+  deferredTask.arm();
+});
diff --git a/toolkit/modules/tests/xpcshell/test_FileUtils.js b/toolkit/modules/tests/xpcshell/test_FileUtils.js
new file mode 100644
index 000000000..86ac74389
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_FileUtils.js
@@ -0,0 +1,226 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+Components.utils.import("resource://gre/modules/FileUtils.jsm");
+
+function do_check_throws(f, result, stack) {
+  if (!stack)
+    stack = Components.stack.caller;
+
+  try {
+    f();
+  } catch (exc) {
+    if (exc.result == result)
+      return;
+    do_throw("expected result " + result + ", caught " + exc, stack);
+  }
+  do_throw("expected result " + result + ", none thrown", stack);
+}
+
+const gProfD = do_get_profile();
+
+add_test(function test_getFile() {
+  let file = FileUtils.getFile("ProfD", ["foobar"]);
+  do_check_true(file instanceof Components.interfaces.nsIFile);
+  do_check_false(file.exists());
+
+  let other = gProfD.clone();
+  other.append("foobar");
+  do_check_true(file.equals(other));
+
+  run_next_test();
+});
+
+add_test(function test_getFile_nonexistentDir() {
+  do_check_throws(function () {
+    let file = FileUtils.getFile("NonexistentD", ["foobar"]);
+  }, Components.results.NS_ERROR_FAILURE);
+
+  run_next_test();
+});
+
+add_test(function test_getFile_createDirs() {
+  let file = FileUtils.getFile("ProfD", ["a", "b", "foobar"]);
+  do_check_true(file instanceof Components.interfaces.nsIFile);
+  do_check_false(file.exists());
+
+  let other = gProfD.clone();
+  other.append("a");
+  do_check_true(other.isDirectory());
+  other.append("b");
+  do_check_true(other.isDirectory());
+  other.append("foobar");
+  do_check_true(file.equals(other));
+
+  run_next_test();
+});
+
+add_test(function test_getDir() {
+  let dir = FileUtils.getDir("ProfD", ["foodir"]);
+  do_check_true(dir instanceof Components.interfaces.nsIFile);
+  do_check_false(dir.exists());
+
+  let other = gProfD.clone();
+  other.append("foodir");
+  do_check_true(dir.equals(other));
+
+  run_next_test();
+});
+
+add_test(function test_getDir_nonexistentDir() {
+  do_check_throws(function () {
+    let file = FileUtils.getDir("NonexistentD", ["foodir"]);
+  }, Components.results.NS_ERROR_FAILURE);
+
+  run_next_test();
+});
+
+add_test(function test_getDir_shouldCreate() {
+  let dir = FileUtils.getDir("ProfD", ["c", "d", "foodir"], true);
+  do_check_true(dir instanceof Components.interfaces.nsIFile);
+  do_check_true(dir.exists());
+
+  let other = gProfD.clone();
+  other.append("c");
+  do_check_true(other.isDirectory());
+  other.append("d");
+  do_check_true(other.isDirectory());
+  other.append("foodir");
+  do_check_true(dir.equals(other));
+
+  run_next_test();
+});
+
+var openFileOutputStream_defaultFlags = function (aKind, aFileName) {
+  let file = FileUtils.getFile("ProfD", [aFileName]);
+  let fos;
+  do_check_true(aKind == "atomic" || aKind == "safe" || aKind == "");
+  if (aKind == "atomic") {
+    fos = FileUtils.openAtomicFileOutputStream(file);
+  } else if (aKind == "safe") {
+    fos = FileUtils.openSafeFileOutputStream(file);
+  } else {
+    fos = FileUtils.openFileOutputStream(file);
+  }
+  do_check_true(fos instanceof Components.interfaces.nsIFileOutputStream);
+  if (aKind == "atomic" || aKind == "safe") {
+    do_check_true(fos instanceof Components.interfaces.nsISafeOutputStream);
+  }
+
+  // FileUtils.openFileOutputStream or FileUtils.openAtomicFileOutputStream()
+  // or FileUtils.openSafeFileOutputStream() opens the stream with DEFER_OPEN
+  // which means the file will not be open until we write to it.
+  do_check_false(file.exists());
+
+  let data = "test_default_flags";
+  fos.write(data, data.length);
+  do_check_true(file.exists());
+
+  // No nsIXULRuntime in xpcshell, so use this trick to determine whether we're
+  // on Windows.
+  if ("@mozilla.org/windows-registry-key;1" in Components.classes) {
+    do_check_eq(file.permissions, 0o666);
+  } else {
+    do_check_eq(file.permissions, FileUtils.PERMS_FILE);
+  }
+
+  run_next_test();
+};
+
+var openFileOutputStream_modeFlags = function(aKind, aFileName) {
+  let file = FileUtils.getFile("ProfD", [aFileName]);
+  let fos;
+  do_check_true(aKind == "atomic" || aKind == "safe" || aKind == "");
+  if (aKind == "atomic") {
+    fos = FileUtils.openAtomicFileOutputStream(file, FileUtils.MODE_WRONLY);
+  } else if (aKind == "safe") {
+    fos = FileUtils.openSafeFileOutputStream(file, FileUtils.MODE_WRONLY);
+  } else {
+    fos = FileUtils.openFileOutputStream(file, FileUtils.MODE_WRONLY);
+  }
+  let data = "test_modeFlags";
+  do_check_throws(function () {
+    fos.write(data, data.length);
+  }, Components.results.NS_ERROR_FILE_NOT_FOUND);
+  do_check_false(file.exists());
+
+  run_next_test();
+};
+
+var closeFileOutputStream = function(aKind, aFileName) {
+  let file = FileUtils.getFile("ProfD", [aFileName]);
+  let fos;
+  do_check_true(aKind == "atomic" || aKind == "safe");
+  if (aKind == "atomic") {
+    fos = FileUtils.openAtomicFileOutputStream(file);
+  } else if (aKind == "safe") {
+    fos = FileUtils.openSafeFileOutputStream(file);
+  }
+
+  // We can write data to the stream just fine while it's open.
+  let data = "testClose";
+  fos.write(data, data.length);
+
+  // But once we close it, we can't anymore.
+  if (aKind == "atomic") {
+    FileUtils.closeAtomicFileOutputStream(fos);
+  } else if (aKind == "safe") {
+    FileUtils.closeSafeFileOutputStream(fos);
+  }
+  do_check_throws(function () {
+    fos.write(data, data.length);
+  }, Components.results.NS_BASE_STREAM_CLOSED);
+  run_next_test();
+};
+
+add_test(function test_openFileOutputStream_defaultFlags() {
+  openFileOutputStream_defaultFlags("", "george");
+});
+
+// openFileOutputStream will uses MODE_WRONLY | MODE_CREATE | MODE_TRUNCATE
+// as the default mode flags, but we can pass in our own if we want to.
+add_test(function test_openFileOutputStream_modeFlags() {
+  openFileOutputStream_modeFlags("", "ringo");
+});
+
+add_test(function test_openAtomicFileOutputStream_defaultFlags() {
+  openFileOutputStream_defaultFlags("atomic", "peiyong");
+});
+
+// openAtomicFileOutputStream will uses MODE_WRONLY | MODE_CREATE | MODE_TRUNCATE
+// as the default mode flags, but we can pass in our own if we want to.
+add_test(function test_openAtomicFileOutputStream_modeFlags() {
+  openFileOutputStream_modeFlags("atomic", "lin");
+});
+
+add_test(function test_closeAtomicFileOutputStream() {
+  closeFileOutputStream("atomic", "peiyonglin");
+});
+
+add_test(function test_openSafeFileOutputStream_defaultFlags() {
+  openFileOutputStream_defaultFlags("safe", "john");
+});
+
+// openSafeFileOutputStream will uses MODE_WRONLY | MODE_CREATE | MODE_TRUNCATE
+// as the default mode flags, but we can pass in our own if we want to.
+add_test(function test_openSafeFileOutputStream_modeFlags() {
+  openFileOutputStream_modeFlags("safe", "paul");
+});
+
+add_test(function test_closeSafeFileOutputStream() {
+  closeFileOutputStream("safe", "georgee");
+});
+
+add_test(function test_newFile() {
+  let testfile = FileUtils.getFile("ProfD", ["test"]);
+  let testpath = testfile.path;
+  let file = new FileUtils.File(testpath);
+  do_check_true(file instanceof Components.interfaces.nsILocalFile);
+  do_check_true(file.equals(testfile));
+  do_check_eq(file.path, testpath);
+  run_next_test();
+});
+
+function run_test() {
+  run_next_test();
+}
diff --git a/toolkit/modules/tests/xpcshell/test_FinderIterator.js b/toolkit/modules/tests/xpcshell/test_FinderIterator.js
new file mode 100644
index 000000000..02c923a00
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_FinderIterator.js
@@ -0,0 +1,265 @@
+const { interfaces: Ci, classes: Cc, utils: Cu } = Components;
+const { FinderIterator } = Cu.import("resource://gre/modules/FinderIterator.jsm", {});
+Cu.import("resource://gre/modules/Promise.jsm");
+
+var gFindResults = [];
+// Stub the method that instantiates nsIFind and does all the interaction with
+// the docShell to be searched through.
+FinderIterator._iterateDocument = function* (word, window, finder) {
+  for (let range of gFindResults)
+    yield range;
+};
+
+FinderIterator._rangeStartsInLink = fakeRange => fakeRange.startsInLink;
+
+function FakeRange(textContent, startsInLink = false) {
+  this.startContainer = {};
+  this.startsInLink = startsInLink;
+  this.toString = () => textContent;
+}
+
+var gMockWindow = {
+  setTimeout(cb, delay) {
+    Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer)
+      .initWithCallback(cb, delay, Ci.nsITimer.TYPE_ONE_SHOT);
+  }
+};
+
+var gMockFinder = {
+  _getWindow() { return gMockWindow; }
+};
+
+function prepareIterator(findText, rangeCount) {
+  gFindResults = [];
+  for (let i = rangeCount; --i >= 0;)
+    gFindResults.push(new FakeRange(findText));
+}
+
+add_task(function* test_start() {
+  let findText = "test";
+  let rangeCount = 300;
+  prepareIterator(findText, rangeCount);
+
+  let count = 0;
+  yield FinderIterator.start({
+    caseSensitive: false,
+    entireWord: false,
+    finder: gMockFinder,
+    listener: {
+      onIteratorRangeFound(range) {
+        ++count;
+        Assert.equal(range.toString(), findText, "Text content should match");
+      }
+    },
+    word: findText
+  });
+
+  Assert.equal(rangeCount, count, "Amount of ranges yielded should match!");
+  Assert.ok(!FinderIterator.running, "Running state should match");
+  Assert.equal(FinderIterator._previousRanges.length, rangeCount, "Ranges cache should match");
+
+  FinderIterator.reset();
+});
+
+add_task(function* test_valid_arguments() {
+  let findText = "foo";
+  let rangeCount = 20;
+  prepareIterator(findText, rangeCount);
+
+  let count = 0;
+
+  yield FinderIterator.start({
+    caseSensitive: false,
+    entireWord: false,
+    finder: gMockFinder,
+    listener: { onIteratorRangeFound(range) { ++count; } },
+    word: findText
+  });
+
+  let params = FinderIterator._previousParams;
+  Assert.ok(!params.linksOnly, "Default for linksOnly is false");
+  Assert.ok(!params.useCache, "Default for useCache is false");
+  Assert.equal(params.word, findText, "Words should match");
+
+  count = 0;
+  Assert.throws(() => FinderIterator.start({
+    entireWord: false,
+    listener: { onIteratorRangeFound(range) { ++count; } },
+    word: findText
+  }), /Missing required option 'caseSensitive'/, "Should throw when missing an argument");
+  FinderIterator.reset();
+
+  Assert.throws(() => FinderIterator.start({
+    caseSensitive: false,
+    listener: { onIteratorRangeFound(range) { ++count; } },
+    word: findText
+  }), /Missing required option 'entireWord'/, "Should throw when missing an argument");
+  FinderIterator.reset();
+
+  Assert.throws(() => FinderIterator.start({
+    caseSensitive: false,
+    entireWord: false,
+    listener: { onIteratorRangeFound(range) { ++count; } },
+    word: findText
+  }), /Missing required option 'finder'/, "Should throw when missing an argument");
+  FinderIterator.reset();
+
+  Assert.throws(() => FinderIterator.start({
+    caseSensitive: true,
+    entireWord: false,
+    finder: gMockFinder,
+    word: findText
+  }), /Missing valid, required option 'listener'/, "Should throw when missing an argument");
+  FinderIterator.reset();
+
+  Assert.throws(() => FinderIterator.start({
+    caseSensitive: false,
+    entireWord: true,
+    finder: gMockFinder,
+    listener: { onIteratorRangeFound(range) { ++count; } },
+  }), /Missing required option 'word'/, "Should throw when missing an argument");
+  FinderIterator.reset();
+
+  Assert.equal(count, 0, "No ranges should've been counted");
+});
+
+add_task(function* test_stop() {
+  let findText = "bar";
+  let rangeCount = 120;
+  prepareIterator(findText, rangeCount);
+
+  let count = 0;
+  let whenDone = FinderIterator.start({
+    caseSensitive: false,
+    entireWord: false,
+    finder: gMockFinder,
+    listener: { onIteratorRangeFound(range) { ++count; } },
+    word: findText
+  });
+
+  FinderIterator.stop();
+
+  yield whenDone;
+
+  Assert.equal(count, 0, "Number of ranges should be 0");
+
+  FinderIterator.reset();
+});
+
+add_task(function* test_reset() {
+  let findText = "tik";
+  let rangeCount = 142;
+  prepareIterator(findText, rangeCount);
+
+  let count = 0;
+  let whenDone = FinderIterator.start({
+    caseSensitive: false,
+    entireWord: false,
+    finder: gMockFinder,
+    listener: { onIteratorRangeFound(range) { ++count; } },
+    word: findText
+  });
+
+  Assert.ok(FinderIterator.running, "Yup, running we are");
+  Assert.equal(count, 0, "Number of ranges should match 0");
+  Assert.equal(FinderIterator.ranges.length, 0, "Number of ranges should match 0");
+
+  FinderIterator.reset();
+
+  Assert.ok(!FinderIterator.running, "Nope, running we are not");
+  Assert.equal(FinderIterator.ranges.length, 0, "No ranges after reset");
+  Assert.equal(FinderIterator._previousRanges.length, 0, "No ranges after reset");
+
+  yield whenDone;
+
+  Assert.equal(count, 0, "Number of ranges should match 0");
+});
+
+add_task(function* test_parallel_starts() {
+  let findText = "tak";
+  let rangeCount = 2143;
+  prepareIterator(findText, rangeCount);
+
+  // Start off the iterator.
+  let count = 0;
+  let whenDone = FinderIterator.start({
+    caseSensitive: false,
+    entireWord: false,
+    finder: gMockFinder,
+    listener: { onIteratorRangeFound(range) { ++count; } },
+    word: findText
+  });
+
+  yield new Promise(resolve => gMockWindow.setTimeout(resolve, 120));
+  Assert.ok(FinderIterator.running, "We ought to be running here");
+
+  let count2 = 0;
+  let whenDone2 = FinderIterator.start({
+    caseSensitive: false,
+    entireWord: false,
+    finder: gMockFinder,
+    listener: { onIteratorRangeFound(range) { ++count2; } },
+    word: findText
+  });
+
+  // Let the iterator run for a little while longer before we assert the world.
+  yield new Promise(resolve => gMockWindow.setTimeout(resolve, 10));
+  FinderIterator.stop();
+
+  Assert.ok(!FinderIterator.running, "Stop means stop");
+
+  yield whenDone;
+  yield whenDone2;
+
+  Assert.greater(count, FinderIterator.kIterationSizeMax, "At least one range should've been found");
+  Assert.less(count, rangeCount, "Not all ranges should've been found");
+  Assert.greater(count2, FinderIterator.kIterationSizeMax, "At least one range should've been found");
+  Assert.less(count2, rangeCount, "Not all ranges should've been found");
+
+  Assert.equal(count2, count, "The second start was later, but should have caught up");
+
+  FinderIterator.reset();
+});
+
+add_task(function* test_allowDistance() {
+  let findText = "gup";
+  let rangeCount = 20;
+  prepareIterator(findText, rangeCount);
+
+  // Start off the iterator.
+  let count = 0;
+  let whenDone = FinderIterator.start({
+    caseSensitive: false,
+    entireWord: false,
+    finder: gMockFinder,
+    listener: { onIteratorRangeFound(range) { ++count; } },
+    word: findText
+  });
+
+  let count2 = 0;
+  let whenDone2 = FinderIterator.start({
+    caseSensitive: false,
+    entireWord: false,
+    finder: gMockFinder,
+    listener: { onIteratorRangeFound(range) { ++count2; } },
+    word: "gu"
+  });
+
+  let count3 = 0;
+  let whenDone3 = FinderIterator.start({
+    allowDistance: 1,
+    caseSensitive: false,
+    entireWord: false,
+    finder: gMockFinder,
+    listener: { onIteratorRangeFound(range) { ++count3; } },
+    word: "gu"
+  });
+
+  yield Promise.all([whenDone, whenDone2, whenDone3]);
+
+  Assert.equal(count, rangeCount, "The first iterator invocation should yield all results");
+  Assert.equal(count2, 0, "The second iterator invocation should yield _no_ results");
+  Assert.equal(count3, rangeCount, "The first iterator invocation should yield all results");
+
+  FinderIterator.reset();
+});
diff --git a/toolkit/modules/tests/xpcshell/test_GMPInstallManager.js b/toolkit/modules/tests/xpcshell/test_GMPInstallManager.js
new file mode 100644
index 000000000..74d5ad43d
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_GMPInstallManager.js
@@ -0,0 +1,794 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+var {classes: Cc, interfaces: Ci, results: Cr, utils: Cu, manager: Cm} = Components;
+const URL_HOST = "http://localhost";
+
+var GMPScope = Cu.import("resource://gre/modules/GMPInstallManager.jsm");
+Cu.import("resource://gre/modules/Services.jsm");
+Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+Cu.import("resource://gre/modules/FileUtils.jsm");
+Cu.import("resource://testing-common/httpd.js");
+Cu.import("resource://gre/modules/Promise.jsm");
+Cu.import("resource://gre/modules/Preferences.jsm")
+Cu.import("resource://gre/modules/UpdateUtils.jsm");
+
+var { computeHash } = Cu.import("resource://gre/modules/addons/ProductAddonChecker.jsm");
+var ProductAddonCheckerScope = Cu.import("resource://gre/modules/addons/ProductAddonChecker.jsm");
+
+do_get_profile();
+
+function run_test() { Cu.import("resource://gre/modules/Preferences.jsm")
+  Preferences.set("media.gmp.log.dump", true);
+  Preferences.set("media.gmp.log.level", 0);
+  run_next_test();
+}
+
+/**
+ * Tests that the helper used for preferences works correctly
+ */
+add_task(function* test_prefs() {
+  let addon1 = "addon1", addon2 = "addon2";
+
+  GMPScope.GMPPrefs.set(GMPScope.GMPPrefs.KEY_URL, "http://not-really-used");
+  GMPScope.GMPPrefs.set(GMPScope.GMPPrefs.KEY_URL_OVERRIDE, "http://not-really-used-2");
+  GMPScope.GMPPrefs.set(GMPScope.GMPPrefs.KEY_PLUGIN_LAST_UPDATE, "1", addon1);
+  GMPScope.GMPPrefs.set(GMPScope.GMPPrefs.KEY_PLUGIN_VERSION, "2", addon1);
+  GMPScope.GMPPrefs.set(GMPScope.GMPPrefs.KEY_PLUGIN_LAST_UPDATE, "3", addon2);
+  GMPScope.GMPPrefs.set(GMPScope.GMPPrefs.KEY_PLUGIN_VERSION, "4", addon2);
+  GMPScope.GMPPrefs.set(GMPScope.GMPPrefs.KEY_PLUGIN_AUTOUPDATE, false, addon2);
+  GMPScope.GMPPrefs.set(GMPScope.GMPPrefs.KEY_CERT_CHECKATTRS, true);
+
+  do_check_eq(GMPScope.GMPPrefs.get(GMPScope.GMPPrefs.KEY_URL), "http://not-really-used");
+  do_check_eq(GMPScope.GMPPrefs.get(GMPScope.GMPPrefs.KEY_URL_OVERRIDE),
+              "http://not-really-used-2");
+  do_check_eq(GMPScope.GMPPrefs.get(GMPScope.GMPPrefs.KEY_PLUGIN_LAST_UPDATE, "", addon1), "1");
+  do_check_eq(GMPScope.GMPPrefs.get(GMPScope.GMPPrefs.KEY_PLUGIN_VERSION, "", addon1), "2");
+  do_check_eq(GMPScope.GMPPrefs.get(GMPScope.GMPPrefs.KEY_PLUGIN_LAST_UPDATE, "", addon2), "3");
+  do_check_eq(GMPScope.GMPPrefs.get(GMPScope.GMPPrefs.KEY_PLUGIN_VERSION, "", addon2), "4");
+  do_check_eq(GMPScope.GMPPrefs.get(GMPScope.GMPPrefs.KEY_PLUGIN_AUTOUPDATE, undefined, addon2),
+              false);
+  do_check_true(GMPScope.GMPPrefs.get(GMPScope.GMPPrefs.KEY_CERT_CHECKATTRS));
+  GMPScope.GMPPrefs.set(GMPScope.GMPPrefs.KEY_PLUGIN_AUTOUPDATE, true, addon2);
+});
+
+/**
+ * Tests that an uninit without a check works fine
+ */
+add_task(function* test_checkForAddons_uninitWithoutCheck() {
+  let installManager = new GMPInstallManager();
+  installManager.uninit();
+});
+
+/**
+ * Tests that an uninit without an install works fine
+ */
+add_test(function test_checkForAddons_uninitWithoutInstall() {
+  overrideXHR(200, "");
+  let installManager = new GMPInstallManager();
+  let promise = installManager.checkForAddons();
+  promise.then(res => {
+    do_check_true(res.usedFallback);
+    installManager.uninit();
+    run_next_test();
+  });
+});
+
+/**
+ * Tests that no response returned rejects
+ */
+add_test(function test_checkForAddons_noResponse() {
+  overrideXHR(200, "");
+  let installManager = new GMPInstallManager();
+  let promise = installManager.checkForAddons();
+  promise.then(res => {
+    do_check_true(res.usedFallback);
+    installManager.uninit();
+    run_next_test();
+  });
+});
+
+/**
+ * Tests that no addons element returned resolves with no addons
+ */
+add_task(function* test_checkForAddons_noAddonsElement() {
+  overrideXHR(200, "<updates></updates>");
+  let installManager = new GMPInstallManager();
+  let res = yield installManager.checkForAddons();
+  do_check_eq(res.gmpAddons.length, 0);
+  installManager.uninit();
+});
+
+/**
+ * Tests that empty addons element returned resolves with no addons
+ */
+add_task(function* test_checkForAddons_emptyAddonsElement() {
+  overrideXHR(200, "<updates><addons/></updates>");
+  let installManager = new GMPInstallManager();
+  let res = yield installManager.checkForAddons();
+  do_check_eq(res.gmpAddons.length, 0);
+  installManager.uninit();
+});
+
+/**
+ * Tests that a response with the wrong root element rejects
+ */
+add_test(function test_checkForAddons_wrongResponseXML() {
+  overrideXHR(200, "<digits_of_pi>3.141592653589793....</digits_of_pi>");
+  let installManager = new GMPInstallManager();
+  let promise = installManager.checkForAddons();
+  promise.then(res => {
+    do_check_true(res.usedFallback);
+    installManager.uninit();
+    run_next_test();
+  });
+});
+
+/**
+ * Tests that a 404 error works as expected
+ */
+add_test(function test_checkForAddons_404Error() {
+  overrideXHR(404, "");
+  let installManager = new GMPInstallManager();
+  let promise = installManager.checkForAddons();
+  promise.then(res => {
+    do_check_true(res.usedFallback);
+    installManager.uninit();
+    run_next_test();
+  });
+});
+
+/**
+ * Tests that a xhr abort() works as expected
+ */
+add_test(function test_checkForAddons_abort() {
+  let overriddenXhr = overrideXHR(200, "", { dropRequest: true} );
+  let installManager = new GMPInstallManager();
+  let promise = installManager.checkForAddons();
+  overriddenXhr.abort();
+  promise.then(res => {
+    do_check_true(res.usedFallback);
+    installManager.uninit();
+    run_next_test();
+  });
+});
+
+/**
+ * Tests that a defensive timeout works as expected
+ */
+add_test(function test_checkForAddons_timeout() {
+  overrideXHR(200, "", { dropRequest: true, timeout: true });
+  let installManager = new GMPInstallManager();
+  let promise = installManager.checkForAddons();
+  promise.then(res => {
+    do_check_true(res.usedFallback);
+    installManager.uninit();
+    run_next_test();
+  });
+});
+
+/**
+ * Tests that we throw correctly in case of ssl certification error.
+ */
+add_test(function test_checkForAddons_bad_ssl() {
+  //
+  // Add random stuff that cause CertUtil to require https.
+  //
+  let PREF_KEY_URL_OVERRIDE_BACKUP =
+    Preferences.get(GMPScope.GMPPrefs.KEY_URL_OVERRIDE, undefined);
+  Preferences.reset(GMPScope.GMPPrefs.KEY_URL_OVERRIDE);
+
+  let CERTS_BRANCH_DOT_ONE = GMPScope.GMPPrefs.KEY_CERTS_BRANCH + ".1";
+  let PREF_CERTS_BRANCH_DOT_ONE_BACKUP =
+    Preferences.get(CERTS_BRANCH_DOT_ONE, undefined);
+  Services.prefs.setCharPref(CERTS_BRANCH_DOT_ONE, "funky value");
+
+
+  overrideXHR(200, "");
+  let installManager = new GMPInstallManager();
+  let promise = installManager.checkForAddons();
+  promise.then(res => {
+    do_check_true(res.usedFallback);
+    installManager.uninit();
+    if (PREF_KEY_URL_OVERRIDE_BACKUP) {
+      Preferences.set(GMPScope.GMPPrefs.KEY_URL_OVERRIDE,
+        PREF_KEY_URL_OVERRIDE_BACKUP);
+    }
+    if (PREF_CERTS_BRANCH_DOT_ONE_BACKUP) {
+      Preferences.set(CERTS_BRANCH_DOT_ONE,
+        PREF_CERTS_BRANCH_DOT_ONE_BACKUP);
+    }
+    run_next_test();
+  });
+});
+
+/**
+ * Tests that gettinga a funky non XML response works as expected
+ */
+add_test(function test_checkForAddons_notXML() {
+  overrideXHR(200, "3.141592653589793....");
+  let installManager = new GMPInstallManager();
+  let promise = installManager.checkForAddons();
+
+  promise.then(res => {
+    do_check_true(res.usedFallback);
+    installManager.uninit();
+    run_next_test();
+  });
+});
+
+/**
+ * Tests that getting a response with a single addon works as expected
+ */
+add_task(function* test_checkForAddons_singleAddon() {
+  let responseXML =
+    "<?xml version=\"1.0\"?>" +
+    "<updates>" +
+    "    <addons>" +
+    "        <addon id=\"gmp-gmpopenh264\"" +
+    "               URL=\"http://127.0.0.1:8011/gmp-gmpopenh264-1.1.zip\"" +
+    "               hashFunction=\"sha256\"" +
+    "               hashValue=\"1118b90d6f645eefc2b99af17bae396636ace1e33d079c88de715177584e2aee\"" +
+    "               version=\"1.1\"/>" +
+    "  </addons>" +
+    "</updates>"
+  overrideXHR(200, responseXML);
+  let installManager = new GMPInstallManager();
+  let res = yield installManager.checkForAddons();
+  do_check_eq(res.gmpAddons.length, 1);
+  let gmpAddon = res.gmpAddons[0];
+  do_check_eq(gmpAddon.id, "gmp-gmpopenh264");
+  do_check_eq(gmpAddon.URL, "http://127.0.0.1:8011/gmp-gmpopenh264-1.1.zip");
+  do_check_eq(gmpAddon.hashFunction, "sha256");
+  do_check_eq(gmpAddon.hashValue, "1118b90d6f645eefc2b99af17bae396636ace1e33d079c88de715177584e2aee");
+  do_check_eq(gmpAddon.version, "1.1");
+  do_check_eq(gmpAddon.size, undefined);
+  do_check_true(gmpAddon.isValid);
+  do_check_false(gmpAddon.isInstalled);
+  installManager.uninit();
+});
+
+/**
+ * Tests that getting a response with a single addon with the optional size
+ * attribute parses as expected.
+ */
+add_task(function* test_checkForAddons_singleAddonWithSize() {
+  let responseXML =
+    "<?xml version=\"1.0\"?>" +
+    "<updates>" +
+    "    <addons>" +
+    "        <addon id=\"openh264-plugin-no-at-symbol\"" +
+    "               URL=\"http://127.0.0.1:8011/gmp-gmpopenh264-1.1.zip\"" +
+    "               hashFunction=\"sha256\"" +
+    "               size=\"42\"" +
+    "               hashValue=\"1118b90d6f645eefc2b99af17bae396636ace1e33d079c88de715177584e2aee\"" +
+    "               version=\"1.1\"/>" +
+    "  </addons>" +
+    "</updates>"
+  overrideXHR(200, responseXML);
+  let installManager = new GMPInstallManager();
+  let res = yield installManager.checkForAddons();
+  do_check_eq(res.gmpAddons.length, 1);
+  let gmpAddon = res.gmpAddons[0];
+  do_check_eq(gmpAddon.id, "openh264-plugin-no-at-symbol");
+  do_check_eq(gmpAddon.URL, "http://127.0.0.1:8011/gmp-gmpopenh264-1.1.zip");
+  do_check_eq(gmpAddon.hashFunction, "sha256");
+  do_check_eq(gmpAddon.hashValue, "1118b90d6f645eefc2b99af17bae396636ace1e33d079c88de715177584e2aee");
+  do_check_eq(gmpAddon.size, 42);
+  do_check_eq(gmpAddon.version, "1.1");
+  do_check_true(gmpAddon.isValid);
+  do_check_false(gmpAddon.isInstalled);
+  installManager.uninit();
+});
+
+/**
+ * Tests that checking for multiple addons work correctly.
+ * Also tests that invalid addons work correctly.
+ */
+add_task(function* test_checkForAddons_multipleAddonNoUpdatesSomeInvalid() {
+  let responseXML =
+    "<?xml version=\"1.0\"?>" +
+    "<updates>" +
+    "    <addons>" +
+    // valid openh264
+    "        <addon id=\"gmp-gmpopenh264\"" +
+    "               URL=\"http://127.0.0.1:8011/gmp-gmpopenh264-1.1.zip\"" +
+    "               hashFunction=\"sha256\"" +
+    "               hashValue=\"1118b90d6f645eefc2b99af17bae396636ace1e33d079c88de715177584e2aee\"" +
+    "               version=\"1.1\"/>" +
+    // valid not openh264
+    "        <addon id=\"NOT-gmp-gmpopenh264\"" +
+    "               URL=\"http://127.0.0.1:8011/NOT-gmp-gmpopenh264-1.1.zip\"" +
+    "               hashFunction=\"sha512\"" +
+    "               hashValue=\"141592656f645eefc2b99af17bae396636ace1e33d079c88de715177584e2aee\"" +
+    "               version=\"9.1\"/>" +
+    // noid
+    "        <addon notid=\"NOT-gmp-gmpopenh264\"" +
+    "               URL=\"http://127.0.0.1:8011/NOT-gmp-gmpopenh264-1.1.zip\"" +
+    "               hashFunction=\"sha512\"" +
+    "               hashValue=\"141592656f645eefc2b99af17bae396636ace1e33d079c88de715177584e2aee\"" +
+    "               version=\"9.1\"/>" +
+    // no URL
+    "        <addon id=\"NOT-gmp-gmpopenh264\"" +
+    "               notURL=\"http://127.0.0.1:8011/NOT-gmp-gmpopenh264-1.1.zip\"" +
+    "               hashFunction=\"sha512\"" +
+    "               hashValue=\"141592656f645eefc2b99af17bae396636ace1e33d079c88de715177584e2aee\"" +
+    "               version=\"9.1\"/>" +
+    // no hash function
+    "        <addon id=\"NOT-gmp-gmpopenh264\"" +
+    "               URL=\"http://127.0.0.1:8011/NOT-gmp-gmpopenh264-1.1.zip\"" +
+    "               nothashFunction=\"sha512\"" +
+    "               hashValue=\"141592656f645eefc2b99af17bae396636ace1e33d079c88de715177584e2aee\"" +
+    "               version=\"9.1\"/>" +
+    // no hash function
+    "        <addon id=\"NOT-gmp-gmpopenh264\"" +
+    "               URL=\"http://127.0.0.1:8011/NOT-gmp-gmpopenh264-1.1.zip\"" +
+    "               hashFunction=\"sha512\"" +
+    "               nothashValue=\"141592656f645eefc2b99af17bae396636ace1e33d079c88de715177584e2aee\"" +
+    "               version=\"9.1\"/>" +
+    // not version
+    "        <addon id=\"NOT-gmp-gmpopenh264\"" +
+    "               URL=\"http://127.0.0.1:8011/NOT-gmp-gmpopenh264-1.1.zip\"" +
+    "               hashFunction=\"sha512\"" +
+    "               hashValue=\"141592656f645eefc2b99af17bae396636ace1e33d079c88de715177584e2aee\"" +
+    "               notversion=\"9.1\"/>" +
+    "  </addons>" +
+    "</updates>"
+  overrideXHR(200, responseXML);
+  let installManager = new GMPInstallManager();
+  let res = yield installManager.checkForAddons();
+  do_check_eq(res.gmpAddons.length, 7);
+  let gmpAddon = res.gmpAddons[0];
+  do_check_eq(gmpAddon.id, "gmp-gmpopenh264");
+  do_check_eq(gmpAddon.URL, "http://127.0.0.1:8011/gmp-gmpopenh264-1.1.zip");
+  do_check_eq(gmpAddon.hashFunction, "sha256");
+  do_check_eq(gmpAddon.hashValue, "1118b90d6f645eefc2b99af17bae396636ace1e33d079c88de715177584e2aee");
+  do_check_eq(gmpAddon.version, "1.1");
+  do_check_true(gmpAddon.isValid);
+  do_check_false(gmpAddon.isInstalled);
+
+  gmpAddon = res.gmpAddons[1];
+  do_check_eq(gmpAddon.id, "NOT-gmp-gmpopenh264");
+  do_check_eq(gmpAddon.URL, "http://127.0.0.1:8011/NOT-gmp-gmpopenh264-1.1.zip");
+  do_check_eq(gmpAddon.hashFunction, "sha512");
+  do_check_eq(gmpAddon.hashValue, "141592656f645eefc2b99af17bae396636ace1e33d079c88de715177584e2aee");
+  do_check_eq(gmpAddon.version, "9.1");
+  do_check_true(gmpAddon.isValid);
+  do_check_false(gmpAddon.isInstalled);
+
+  for (let i = 2; i < res.gmpAddons.length; i++) {
+    do_check_false(res.gmpAddons[i].isValid);
+    do_check_false(res.gmpAddons[i].isInstalled);
+  }
+  installManager.uninit();
+});
+
+/**
+ * Tests that checking for addons when there are also updates available
+ * works as expected.
+ */
+add_task(function* test_checkForAddons_updatesWithAddons() {
+  let responseXML =
+    "<?xml version=\"1.0\"?>" +
+    "    <updates>" +
+    "        <update type=\"minor\" displayVersion=\"33.0a1\" appVersion=\"33.0a1\" platformVersion=\"33.0a1\" buildID=\"20140628030201\">" +
+    "        <patch type=\"complete\" URL=\"http://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/2014/06/2014-06-28-03-02-01-mozilla-central/firefox-33.0a1.en-US.mac.complete.mar\" hashFunction=\"sha512\" hashValue=\"f3f90d71dff03ae81def80e64bba3e4569da99c9e15269f731c2b167c4fc30b3aed9f5fee81c19614120230ca333e73a5e7def1b8e45d03135b2069c26736219\" size=\"85249896\"/>" +
+    "    </update>" +
+    "    <addons>" +
+    "        <addon id=\"gmp-gmpopenh264\"" +
+    "               URL=\"http://127.0.0.1:8011/gmp-gmpopenh264-1.1.zip\"" +
+    "               hashFunction=\"sha256\"" +
+    "               hashValue=\"1118b90d6f645eefc2b99af17bae396636ace1e33d079c88de715177584e2aee\"" +
+    "               version=\"1.1\"/>" +
+    "  </addons>" +
+    "</updates>"
+  overrideXHR(200, responseXML);
+  let installManager = new GMPInstallManager();
+  let res = yield installManager.checkForAddons();
+  do_check_eq(res.gmpAddons.length, 1);
+  let gmpAddon = res.gmpAddons[0];
+  do_check_eq(gmpAddon.id, "gmp-gmpopenh264");
+  do_check_eq(gmpAddon.URL, "http://127.0.0.1:8011/gmp-gmpopenh264-1.1.zip");
+  do_check_eq(gmpAddon.hashFunction, "sha256");
+  do_check_eq(gmpAddon.hashValue, "1118b90d6f645eefc2b99af17bae396636ace1e33d079c88de715177584e2aee");
+  do_check_eq(gmpAddon.version, "1.1");
+  do_check_true(gmpAddon.isValid);
+  do_check_false(gmpAddon.isInstalled);
+  installManager.uninit();
+});
+
+/**
+ * Tests that installing found addons works as expected
+ */
+function* test_checkForAddons_installAddon(id, includeSize, wantInstallReject) {
+  do_print("Running installAddon for id: " + id +
+           ", includeSize: " + includeSize +
+           " and wantInstallReject: " + wantInstallReject);
+  let httpServer = new HttpServer();
+  let dir = FileUtils.getDir("TmpD", [], true);
+  httpServer.registerDirectory("/", dir);
+  httpServer.start(-1);
+  let testserverPort = httpServer.identity.primaryPort;
+  let zipFileName = "test_" + id + "_GMP.zip";
+
+  let zipURL = URL_HOST + ":" + testserverPort + "/" + zipFileName;
+  do_print("zipURL: " + zipURL);
+
+  let data = "e~=0.5772156649";
+  let zipFile = createNewZipFile(zipFileName, data);
+  let hashFunc = "sha256";
+  let expectedDigest = yield computeHash(hashFunc, zipFile.path);
+  let fileSize = zipFile.fileSize;
+  if (wantInstallReject) {
+    fileSize = 1;
+  }
+
+  let responseXML =
+    "<?xml version=\"1.0\"?>" +
+    "<updates>" +
+    "    <addons>" +
+    "        <addon id=\"" + id + "-gmp-gmpopenh264\"" +
+    "               URL=\"" + zipURL + "\"" +
+    "               hashFunction=\"" + hashFunc + "\"" +
+    "               hashValue=\"" + expectedDigest + "\"" +
+    (includeSize ? " size=\"" + fileSize + "\"" : "") +
+    "               version=\"1.1\"/>" +
+    "  </addons>" +
+    "</updates>"
+
+  overrideXHR(200, responseXML);
+  let installManager = new GMPInstallManager();
+  let res = yield installManager.checkForAddons();
+  do_check_eq(res.gmpAddons.length, 1);
+  let gmpAddon = res.gmpAddons[0];
+  do_check_false(gmpAddon.isInstalled);
+
+  try {
+    let extractedPaths = yield installManager.installAddon(gmpAddon);
+    if (wantInstallReject) {
+      do_check_true(false); // installAddon() should have thrown.
+    }
+    do_check_eq(extractedPaths.length, 1);
+    let extractedPath = extractedPaths[0];
+
+    do_print("Extracted path: " + extractedPath);
+
+    let extractedFile = Cc["@mozilla.org/file/local;1"].
+                        createInstance(Ci.nsIFile);
+    extractedFile.initWithPath(extractedPath);
+    do_check_true(extractedFile.exists());
+    let readData = readStringFromFile(extractedFile);
+    do_check_eq(readData, data);
+
+    // Make sure the prefs are set correctly
+    do_check_true(!!GMPScope.GMPPrefs.get(
+      GMPScope.GMPPrefs.KEY_PLUGIN_LAST_UPDATE, "", gmpAddon.id));
+    do_check_eq(GMPScope.GMPPrefs.get(GMPScope.GMPPrefs.KEY_PLUGIN_VERSION, "",
+                                      gmpAddon.id),
+                "1.1");
+    do_check_eq(GMPScope.GMPPrefs.get(GMPScope.GMPPrefs.KEY_PLUGIN_ABI, "",
+                                      gmpAddon.id),
+                UpdateUtils.ABI);
+    // Make sure it reports as being installed
+    do_check_true(gmpAddon.isInstalled);
+
+    // Cleanup
+    extractedFile.parent.remove(true);
+    zipFile.remove(false);
+    httpServer.stop(function() {});
+    installManager.uninit();
+  } catch (ex) {
+    zipFile.remove(false);
+    if (!wantInstallReject) {
+      do_throw("install update should not reject " + ex.message);
+    }
+  }
+}
+
+add_task(test_checkForAddons_installAddon.bind(null, "1", true, false));
+add_task(test_checkForAddons_installAddon.bind(null, "2", false, false));
+add_task(test_checkForAddons_installAddon.bind(null, "3", true, true));
+
+/**
+ * Tests simpleCheckAndInstall when autoupdate is disabled for a GMP
+ */
+add_task(function* test_simpleCheckAndInstall_autoUpdateDisabled() {
+  GMPScope.GMPPrefs.set(GMPScope.GMPPrefs.KEY_PLUGIN_AUTOUPDATE, false, GMPScope.OPEN_H264_ID);
+  let responseXML =
+    "<?xml version=\"1.0\"?>" +
+    "<updates>" +
+    "    <addons>" +
+    // valid openh264
+    "        <addon id=\"gmp-gmpopenh264\"" +
+    "               URL=\"http://127.0.0.1:8011/gmp-gmpopenh264-1.1.zip\"" +
+    "               hashFunction=\"sha256\"" +
+    "               hashValue=\"1118b90d6f645eefc2b99af17bae396636ace1e33d079c88de715177584e2aee\"" +
+    "               version=\"1.1\"/>" +
+    "  </addons>" +
+    "</updates>"
+
+  overrideXHR(200, responseXML);
+  let installManager = new GMPInstallManager();
+  let result = yield installManager.simpleCheckAndInstall();
+  do_check_eq(result.status, "nothing-new-to-install");
+  Preferences.reset(GMPScope.GMPPrefs.KEY_UPDATE_LAST_CHECK);
+  GMPScope.GMPPrefs.set(GMPScope.GMPPrefs.KEY_PLUGIN_AUTOUPDATE, true, GMPScope.OPEN_H264_ID);
+});
+
+/**
+ * Tests simpleCheckAndInstall nothing to install
+ */
+add_task(function* test_simpleCheckAndInstall_nothingToInstall() {
+  let responseXML =
+    "<?xml version=\"1.0\"?>" +
+    "<updates>" +
+    "</updates>"
+
+  overrideXHR(200, responseXML);
+  let installManager = new GMPInstallManager();
+  let result = yield installManager.simpleCheckAndInstall();
+  do_check_eq(result.status, "nothing-new-to-install");
+});
+
+/**
+ * Tests simpleCheckAndInstall too frequent
+ */
+add_task(function* test_simpleCheckAndInstall_tooFrequent() {
+  let responseXML =
+    "<?xml version=\"1.0\"?>" +
+    "<updates>" +
+    "</updates>"
+
+  overrideXHR(200, responseXML);
+  let installManager = new GMPInstallManager();
+  let result = yield installManager.simpleCheckAndInstall();
+  do_check_eq(result.status, "too-frequent-no-check");
+});
+
+/**
+ * Tests that installing addons when there is no server works as expected
+ */
+add_test(function test_installAddon_noServer() {
+  let dir = FileUtils.getDir("TmpD", [], true);
+  let zipFileName = "test_GMP.zip";
+  let zipURL = URL_HOST + ":0/" + zipFileName;
+
+  let data = "e~=0.5772156649";
+  let zipFile = createNewZipFile(zipFileName, data);
+
+  let responseXML =
+    "<?xml version=\"1.0\"?>" +
+    "<updates>" +
+    "    <addons>" +
+    "        <addon id=\"gmp-gmpopenh264\"" +
+    "               URL=\"" + zipURL + "\"" +
+    "               hashFunction=\"sha256\"" +
+    "               hashValue=\"11221cbda000347b054028b527a60e578f919cb10f322ef8077d3491c6fcb474\"" +
+    "               version=\"1.1\"/>" +
+    "  </addons>" +
+    "</updates>"
+
+  overrideXHR(200, responseXML);
+  let installManager = new GMPInstallManager();
+  let checkPromise = installManager.checkForAddons();
+  checkPromise.then(res => {
+    do_check_eq(res.gmpAddons.length, 1);
+    let gmpAddon = res.gmpAddons[0];
+
+    GMPInstallManager.overrideLeaveDownloadedZip = true;
+    let installPromise = installManager.installAddon(gmpAddon);
+    installPromise.then(extractedPaths => {
+      do_throw("No server for install should reject");
+    }, err => {
+      do_check_true(!!err);
+      installManager.uninit();
+      run_next_test();
+    });
+  }, () => {
+    do_throw("check should not reject for install no server");
+  });
+});
+
+/**
+ * Returns the read stream into a string
+ */
+function readStringFromInputStream(inputStream) {
+  let sis = Cc["@mozilla.org/scriptableinputstream;1"].
+            createInstance(Ci.nsIScriptableInputStream);
+  sis.init(inputStream);
+  let text = sis.read(sis.available());
+  sis.close();
+  return text;
+}
+
+/**
+ * Reads a string of text from a file.
+ * This function only works with ASCII text.
+ */
+function readStringFromFile(file) {
+  if (!file.exists()) {
+    do_print("readStringFromFile - file doesn't exist: " + file.path);
+    return null;
+  }
+  let fis = Cc["@mozilla.org/network/file-input-stream;1"].
+            createInstance(Ci.nsIFileInputStream);
+  fis.init(file, FileUtils.MODE_RDONLY, FileUtils.PERMS_FILE, 0);
+  return readStringFromInputStream(fis);
+}
+
+/**
+ * Bare bones XMLHttpRequest implementation for testing onprogress, onerror,
+ * and onload nsIDomEventListener handleEvent.
+ */
+function makeHandler(aVal) {
+  if (typeof aVal == "function")
+    return { handleEvent: aVal };
+  return aVal;
+}
+/**
+ * Constructs a mock xhr which is used for testing different aspects
+ * of responses.
+ */
+function xhr(inputStatus, inputResponse, options) {
+  this.inputStatus = inputStatus;
+  this.inputResponse = inputResponse;
+  this.status = 0;
+  this.responseXML = null;
+  this._aborted = false;
+  this._onabort = null;
+  this._onprogress = null;
+  this._onerror = null;
+  this._onload = null;
+  this._onloadend = null;
+  this._ontimeout = null;
+  this._url = null;
+  this._method = null;
+  this._timeout = 0;
+  this._notified = false;
+  this._options = options || {};
+}
+xhr.prototype = {
+  overrideMimeType: function(aMimetype) { },
+  setRequestHeader: function(aHeader, aValue) { },
+  status: null,
+  channel: { set notificationCallbacks(aVal) { } },
+  open: function(aMethod, aUrl) {
+    this.channel.originalURI = Services.io.newURI(aUrl, null, null);
+    this._method = aMethod; this._url = aUrl;
+  },
+  abort: function() {
+    this._dropRequest = true;
+    this._notify(["abort", "loadend"]);
+  },
+  responseXML: null,
+  responseText: null,
+  send: function(aBody) {
+    do_execute_soon(function() {
+      try {
+        if (this._options.dropRequest) {
+          if (this._timeout > 0 && this._options.timeout) {
+            this._notify(["timeout", "loadend"]);
+          }
+          return;
+        }
+        this.status = this.inputStatus;
+        this.responseText = this.inputResponse;
+        try {
+          let parser = Cc["@mozilla.org/xmlextras/domparser;1"].
+                createInstance(Ci.nsIDOMParser);
+          this.responseXML = parser.parseFromString(this.inputResponse,
+            "application/xml");
+        } catch (e) {
+          this.responseXML = null;
+        }
+        if (this.inputStatus === 200) {
+          this._notify(["load", "loadend"]);
+        } else {
+          this._notify(["error", "loadend"]);
+        }
+      } catch (ex) {
+        do_throw(ex);
+      }
+    }.bind(this));
+  },
+  set onabort(aValue) { this._onabort = makeHandler(aValue); },
+  get onabort() { return this._onabort; },
+  set onprogress(aValue) { this._onprogress = makeHandler(aValue); },
+  get onprogress() { return this._onprogress; },
+  set onerror(aValue) { this._onerror = makeHandler(aValue); },
+  get onerror() { return this._onerror; },
+  set onload(aValue) { this._onload = makeHandler(aValue); },
+  get onload() { return this._onload; },
+  set onloadend(aValue) { this._onloadend = makeHandler(aValue); },
+  get onloadend() { return this._onloadend; },
+  set ontimeout(aValue) { this._ontimeout = makeHandler(aValue); },
+  get ontimeout() { return this._ontimeout; },
+  set timeout(aValue) { this._timeout = aValue; },
+  _notify: function(events) {
+    if (this._notified) {
+      return;
+    }
+    this._notified = true;
+    for (let item of events) {
+      let k = "on" + item;
+      if (this[k]) {
+        do_print("Notifying " + item);
+        let e = {
+          target: this,
+          type: item,
+        };
+        this[k](e);
+      } else {
+        do_print("Notifying " + item + ", but there are no listeners");
+      }
+    }
+  },
+  addEventListener: function(aEvent, aValue, aCapturing) {
+    eval("this._on" + aEvent + " = aValue");
+  },
+  flags: Ci.nsIClassInfo.SINGLETON,
+  getScriptableHelper: () => null,
+  getInterfaces: function(aCount) {
+    let interfaces = [Ci.nsISupports];
+    aCount.value = interfaces.length;
+    return interfaces;
+  },
+  classDescription: "XMLHttpRequest",
+  contractID: "@mozilla.org/xmlextras/xmlhttprequest;1",
+  classID: Components.ID("{c9b37f43-4278-4304-a5e0-600991ab08cb}"),
+  createInstance: function(aOuter, aIID) {
+    if (aOuter == null)
+      return this.QueryInterface(aIID);
+    throw Cr.NS_ERROR_NO_AGGREGATION;
+  },
+  QueryInterface: function(aIID) {
+    if (aIID.equals(Ci.nsIClassInfo) ||
+        aIID.equals(Ci.nsISupports))
+      return this;
+    throw Cr.NS_ERROR_NO_INTERFACE;
+  },
+  get wrappedJSObject() { return this; }
+};
+
+/**
+ * Helper used to overrideXHR requests (no matter to what URL) with the
+ * specified status and response.
+ * @param status The status you want to get back when an XHR request is made
+ * @param response The response you want to get back when an XHR request is made
+ */
+function overrideXHR(status, response, options) {
+  overrideXHR.myxhr = new xhr(status, response, options);
+  ProductAddonCheckerScope.CreateXHR = function() {
+    return overrideXHR.myxhr;
+  };
+  return overrideXHR.myxhr;
+}
+
+/**
+ * Creates a new zip file containing a file with the specified data
+ * @param zipName The name of the zip file
+ * @param data The data to go inside the zip for the filename entry1.info
+ */
+function createNewZipFile(zipName, data) {
+   // Create a zip file which will be used for extracting
+    let stream = Cc["@mozilla.org/io/string-input-stream;1"].
+                 createInstance(Ci.nsIStringInputStream);
+    stream.setData(data, data.length);
+    let zipWriter = Cc["@mozilla.org/zipwriter;1"].
+                    createInstance(Components.interfaces.nsIZipWriter);
+    let zipFile = FileUtils.getFile("TmpD", [zipName]);
+    if (zipFile.exists()) {
+      zipFile.remove(false);
+    }
+    // From prio.h
+    const PR_RDWR = 0x04;
+    const PR_CREATE_FILE = 0x08;
+    const PR_TRUNCATE    = 0x20;
+    zipWriter.open(zipFile, PR_RDWR | PR_CREATE_FILE | PR_TRUNCATE);
+    zipWriter.addEntryStream("entry1.info", Date.now(),
+                             Ci.nsIZipWriter.COMPRESSION_BEST, stream, false);
+    zipWriter.close();
+    stream.close();
+    do_print("zip file created on disk at: " + zipFile.path);
+    return zipFile;
+}
diff --git a/toolkit/modules/tests/xpcshell/test_Http.js b/toolkit/modules/tests/xpcshell/test_Http.js
new file mode 100644
index 000000000..3dfd769b7
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_Http.js
@@ -0,0 +1,257 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+Components.utils.import("resource://gre/modules/Http.jsm");
+Components.utils.import("resource://testing-common/httpd.js");
+
+const BinaryInputStream = Components.Constructor("@mozilla.org/binaryinputstream;1",
+  "nsIBinaryInputStream", "setInputStream");
+
+var server;
+
+const kDefaultServerPort = 9000;
+const kSuccessPath = "/success";
+const kBaseUrl = "http://localhost:" + kDefaultServerPort;
+const kSuccessUrl = kBaseUrl + kSuccessPath;
+
+const kPostPath = "/post";
+const kPostUrl = kBaseUrl + kPostPath;
+const kPostDataSent = [["foo", "bar"], ["complex", "!*()@"]];
+const kPostDataReceived = "foo=bar&complex=%21%2A%28%29%40";
+const kPostMimeTypeReceived = "application/x-www-form-urlencoded; charset=utf-8";
+
+const kJsonPostPath = "/json_post";
+const kJsonPostUrl = kBaseUrl + kJsonPostPath;
+const kJsonPostData = JSON.stringify(kPostDataSent);
+const kJsonPostMimeType = "application/json";
+
+const kPutPath = "/put";
+const kPutUrl = kBaseUrl + kPutPath;
+const kPutDataSent = [["P", "NP"]];
+const kPutDataReceived = "P=NP";
+
+const kGetPath = "/get";
+const kGetUrl = kBaseUrl + kGetPath;
+
+function successResult(aRequest, aResponse) {
+  aResponse.setStatusLine(null, 200, "OK");
+  aResponse.setHeader("Content-Type", "application/json");
+  aResponse.write("Success!");
+}
+
+function getDataChecker(aExpectedMethod, aExpectedData, aExpectedMimeType = null) {
+  return function(aRequest, aResponse) {
+    let body = new BinaryInputStream(aRequest.bodyInputStream);
+    let bytes = [];
+    let avail;
+    while ((avail = body.available()) > 0)
+      Array.prototype.push.apply(bytes, body.readByteArray(avail));
+
+    do_check_eq(aRequest.method, aExpectedMethod);
+
+    // Checking if the Content-Type is as expected.
+    if (aExpectedMimeType) {
+      let contentType = aRequest.getHeader("Content-Type");
+      do_check_eq(contentType, aExpectedMimeType);
+    }
+
+    var data = String.fromCharCode.apply(null, bytes);
+
+    do_check_eq(data, aExpectedData);
+
+    aResponse.setStatusLine(null, 200, "OK");
+    aResponse.setHeader("Content-Type", "application/json");
+    aResponse.write("Success!");
+  }
+}
+
+add_test(function test_successCallback() {
+  do_test_pending();
+  let options = {
+    onLoad: function(aResponse) {
+      do_check_eq(aResponse, "Success!");
+      do_test_finished();
+      run_next_test();
+    },
+    onError: function(e) {
+      do_check_true(false);
+      do_test_finished();
+      run_next_test();
+    }
+  }
+  httpRequest(kSuccessUrl, options);
+});
+
+add_test(function test_errorCallback() {
+  do_test_pending();
+  let options = {
+    onSuccess: function(aResponse) {
+      do_check_true(false);
+      do_test_finished();
+      run_next_test();
+    },
+    onError: function(e, aResponse) {
+      do_check_eq(e, "404 - Not Found");
+      do_test_finished();
+      run_next_test();
+    }
+  }
+  httpRequest(kBaseUrl + "/failure", options);
+});
+
+add_test(function test_PostData() {
+  do_test_pending();
+  let options = {
+    onLoad: function(aResponse) {
+      do_check_eq(aResponse, "Success!");
+      do_test_finished();
+      run_next_test();
+    },
+    onError: function(e) {
+      do_check_true(false);
+      do_test_finished();
+      run_next_test();
+    },
+    postData: kPostDataSent
+  }
+  httpRequest(kPostUrl, options);
+});
+
+add_test(function test_PutData() {
+  do_test_pending();
+  let options = {
+    method: "PUT",
+    onLoad: function(aResponse) {
+      do_check_eq(aResponse, "Success!");
+      do_test_finished();
+      run_next_test();
+    },
+    onError: function(e) {
+      do_check_true(false);
+      do_test_finished();
+      run_next_test();
+    },
+    postData: kPutDataSent
+  }
+  httpRequest(kPutUrl, options);
+});
+
+add_test(function test_GetData() {
+  do_test_pending();
+  let options = {
+    onLoad: function(aResponse) {
+      do_check_eq(aResponse, "Success!");
+      do_test_finished();
+      run_next_test();
+    },
+    onError: function(e) {
+      do_check_true(false);
+      do_test_finished();
+      run_next_test();
+    },
+    postData: null
+  }
+  httpRequest(kGetUrl, options);
+});
+
+add_test(function test_OptionalParameters() {
+  let options = {
+    onLoad: null,
+    onError: null,
+    logger: null
+  };
+  // Just make sure that nothing throws when doing this (i.e. httpRequest
+  // doesn't try to access null options).
+  httpRequest(kGetUrl, options);
+  run_next_test();
+});
+
+/**
+ * Makes sure that httpRequest API allows setting a custom Content-Type header
+ * for POST requests when data is a string.
+ */
+add_test(function test_CustomContentTypeOnPost() {
+  do_test_pending();
+
+  // Preparing the request parameters.
+  let options = {
+    onLoad: function(aResponse) {
+      do_check_eq(aResponse, "Success!");
+      do_test_finished();
+      run_next_test();
+    },
+    onError: function(e) {
+      do_check_true(false);
+      do_test_finished();
+      run_next_test();
+    },
+    postData: kJsonPostData,
+    // Setting a custom Content-Type header.
+    headers: [['Content-Type', "application/json"]]
+  }
+
+  // Firing the request.
+  httpRequest(kJsonPostUrl, options);
+});
+
+/**
+ * Ensures that the httpRequest API provides a way to override the response
+ * MIME type.
+ */
+add_test(function test_OverrideMimeType() {
+  do_test_pending();
+
+  // Preparing the request parameters.
+  const kMimeType = 'text/xml; charset=UTF-8';
+  let options = {
+    onLoad: function(aResponse, xhr) {
+      do_check_eq(aResponse, "Success!");
+
+      // Set the expected MIME-type.
+      let reportedMimeType = xhr.getResponseHeader("Content-Type");
+      do_check_neq(reportedMimeType, kMimeType);
+
+      // responseXML should not be not null if overriding mime type succeeded.
+      do_check_true(xhr.responseXML != null);
+
+      do_test_finished();
+      run_next_test();
+    },
+    onError: function(e) {
+      do_check_true(false);
+      do_test_finished();
+      run_next_test();
+    }
+  };
+
+  // Firing the request.
+  let xhr = httpRequest(kGetUrl, options);
+
+  // Override the response MIME type.
+  xhr.overrideMimeType(kMimeType);
+});
+
+function run_test() {
+  // Set up a mock HTTP server to serve a success page.
+  server = new HttpServer();
+  server.registerPathHandler(kSuccessPath, successResult);
+  server.registerPathHandler(kPostPath,
+                             getDataChecker("POST", kPostDataReceived,
+                                            kPostMimeTypeReceived));
+  server.registerPathHandler(kPutPath,
+                             getDataChecker("PUT", kPutDataReceived));
+  server.registerPathHandler(kGetPath, getDataChecker("GET", ""));
+  server.registerPathHandler(kJsonPostPath,
+                             getDataChecker("POST", kJsonPostData,
+                                            kJsonPostMimeType));
+
+  server.start(kDefaultServerPort);
+
+  run_next_test();
+
+  // Teardown.
+  do_register_cleanup(function() {
+    server.stop(function() { });
+  });
+}
+
diff --git a/toolkit/modules/tests/xpcshell/test_Integration.js b/toolkit/modules/tests/xpcshell/test_Integration.js
new file mode 100644
index 000000000..808e2d34f
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_Integration.js
@@ -0,0 +1,238 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/*
+ * Tests the Integration.jsm module.
+ */
+
+"use strict";
+
+const { classes: Cc, interfaces: Ci, utils: Cu, results: Cr } = Components;
+
+Cu.import("resource://gre/modules/Integration.jsm", this);
+Cu.import("resource://gre/modules/Services.jsm", this);
+Cu.import("resource://gre/modules/Task.jsm", this);
+
+const TestIntegration = {
+  value: "value",
+
+  get valueFromThis() {
+    return this.value;
+  },
+
+  get property() {
+    return this._property;
+  },
+
+  set property(value) {
+    this._property = value;
+  },
+
+  method(argument) {
+    this.methodArgument = argument;
+    return "method" + argument;
+  },
+
+  asyncMethod: Task.async(function* (argument) {
+    this.asyncMethodArgument = argument;
+    return "asyncMethod" + argument;
+  }),
+};
+
+let overrideFn = base => ({
+  value: "overridden-value",
+
+  get property() {
+    return "overridden-" + base.__lookupGetter__("property").call(this);
+  },
+
+  set property(value) {
+    base.__lookupSetter__("property").call(this, "overridden-" + value);
+  },
+
+  method() {
+    return "overridden-" + base.method.apply(this, arguments);
+  },
+
+  asyncMethod: Task.async(function* () {
+    return "overridden-" + (yield base.asyncMethod.apply(this, arguments));
+  }),
+});
+
+let superOverrideFn = base => ({
+  __proto__: base,
+
+  value: "overridden-value",
+
+  get property() {
+    return "overridden-" + super.property;
+  },
+
+  set property(value) {
+    super.property = "overridden-" + value;
+  },
+
+  method() {
+    return "overridden-" + super.method(...arguments);
+  },
+
+  asyncMethod: Task.async(function* () {
+    // We cannot use the "super" keyword in methods defined using "Task.async".
+    return "overridden-" + (yield base.asyncMethod.apply(this, arguments));
+  }),
+});
+
+/**
+ * Fails the test if the results of method invocations on the combined object
+ * don't match the expected results based on how many overrides are registered.
+ *
+ * @param combined
+ *        The combined object based on the TestIntegration root.
+ * @param overridesCount
+ *        Zero if the root object is not overridden, or a higher value to test
+ *        the presence of one or more integration overrides.
+ */
+function* assertCombinedResults(combined, overridesCount) {
+  let expectedValue = overridesCount > 0 ? "overridden-value" : "value";
+  let prefix = "overridden-".repeat(overridesCount);
+
+  Assert.equal(combined.value, expectedValue);
+  Assert.equal(combined.valueFromThis, expectedValue);
+
+  combined.property = "property";
+  Assert.equal(combined.property, prefix.repeat(2) + "property");
+
+  combined.methodArgument = "";
+  Assert.equal(combined.method("-argument"), prefix + "method-argument");
+  Assert.equal(combined.methodArgument, "-argument");
+
+  combined.asyncMethodArgument = "";
+  Assert.equal(yield combined.asyncMethod("-argument"),
+               prefix + "asyncMethod-argument");
+  Assert.equal(combined.asyncMethodArgument, "-argument");
+}
+
+/**
+ * Fails the test if the results of method invocations on the combined object
+ * for the "testModule" integration point don't match the expected results based
+ * on how many overrides are registered.
+ *
+ * @param overridesCount
+ *        Zero if the root object is not overridden, or a higher value to test
+ *        the presence of one or more integration overrides.
+ */
+function* assertCurrentCombinedResults(overridesCount) {
+  let combined = Integration.testModule.getCombined(TestIntegration);
+  yield assertCombinedResults(combined, overridesCount);
+}
+
+/**
+ * Checks the initial state with no integration override functions registered.
+ */
+add_task(function* test_base() {
+  yield assertCurrentCombinedResults(0);
+});
+
+/**
+ * Registers and unregisters an integration override function.
+ */
+add_task(function* test_override() {
+  Integration.testModule.register(overrideFn);
+  yield assertCurrentCombinedResults(1);
+
+  // Registering the same function more than once has no effect.
+  Integration.testModule.register(overrideFn);
+  yield assertCurrentCombinedResults(1);
+
+  Integration.testModule.unregister(overrideFn);
+  yield assertCurrentCombinedResults(0);
+});
+
+/**
+ * Registers and unregisters more than one integration override function, of
+ * which one uses the prototype and the "super" keyword to access the base.
+ */
+add_task(function* test_override_super_multiple() {
+  Integration.testModule.register(overrideFn);
+  Integration.testModule.register(superOverrideFn);
+  yield assertCurrentCombinedResults(2);
+
+  Integration.testModule.unregister(overrideFn);
+  yield assertCurrentCombinedResults(1);
+
+  Integration.testModule.unregister(superOverrideFn);
+  yield assertCurrentCombinedResults(0);
+});
+
+/**
+ * Registers an integration override function that throws an exception, and
+ * ensures that this does not block other functions from being registered.
+ */
+add_task(function* test_override_error() {
+  let errorOverrideFn = base => { throw "Expected error." };
+
+  Integration.testModule.register(errorOverrideFn);
+  Integration.testModule.register(overrideFn);
+  yield assertCurrentCombinedResults(1);
+
+  Integration.testModule.unregister(errorOverrideFn);
+  Integration.testModule.unregister(overrideFn);
+  yield assertCurrentCombinedResults(0);
+});
+
+/**
+ * Checks that state saved using the "this" reference is preserved as a shallow
+ * copy when registering new integration override functions.
+ */
+add_task(function* test_state_preserved() {
+  let valueObject = { toString: () => "toString" };
+
+  let combined = Integration.testModule.getCombined(TestIntegration);
+  combined.property = valueObject;
+  Assert.ok(combined.property === valueObject);
+
+  Integration.testModule.register(overrideFn);
+  combined = Integration.testModule.getCombined(TestIntegration);
+  Assert.equal(combined.property, "overridden-toString");
+
+  Integration.testModule.unregister(overrideFn);
+  combined = Integration.testModule.getCombined(TestIntegration);
+  Assert.ok(combined.property === valueObject);
+});
+
+/**
+ * Checks that the combined integration objects cannot be used with XPCOM.
+ *
+ * This is limited by the fact that interfaces with the "[function]" annotation,
+ * for example nsIObserver, do not call the QueryInterface implementation.
+ */
+add_task(function* test_xpcom_throws() {
+  let combined = Integration.testModule.getCombined(TestIntegration);
+
+  // This calls QueryInterface because it looks for nsISupportsWeakReference.
+  Assert.throws(() => Services.obs.addObserver(combined, "test-topic", true),
+                "NS_NOINTERFACE");
+});
+
+/**
+ * Checks that getters defined by defineModuleGetter are able to retrieve the
+ * latest version of the combined integration object.
+ */
+add_task(function* test_defineModuleGetter() {
+  let objectForGetters = {};
+
+  // Test with and without the optional "symbol" parameter.
+  Integration.testModule.defineModuleGetter(objectForGetters,
+    "TestIntegration", "resource://testing-common/TestIntegration.jsm");
+  Integration.testModule.defineModuleGetter(objectForGetters,
+    "integration", "resource://testing-common/TestIntegration.jsm",
+    "TestIntegration");
+
+  Integration.testModule.register(overrideFn);
+  yield assertCombinedResults(objectForGetters.integration, 1);
+  yield assertCombinedResults(objectForGetters.TestIntegration, 1);
+
+  Integration.testModule.unregister(overrideFn);
+  yield assertCombinedResults(objectForGetters.integration, 0);
+  yield assertCombinedResults(objectForGetters.TestIntegration, 0);
+});
diff --git a/toolkit/modules/tests/xpcshell/test_JSONFile.js b/toolkit/modules/tests/xpcshell/test_JSONFile.js
new file mode 100644
index 000000000..77e8c55b9
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_JSONFile.js
@@ -0,0 +1,242 @@
+/**
+ * Tests the JSONFile object.
+ */
+
+"use strict";
+
+// Globals
+
+const { classes: Cc, interfaces: Ci, utils: Cu, results: Cr } = Components;
+
+Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+
+XPCOMUtils.defineLazyModuleGetter(this, "DownloadPaths",
+                                  "resource://gre/modules/DownloadPaths.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "FileUtils",
+                                  "resource://gre/modules/FileUtils.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "OS",
+                                  "resource://gre/modules/osfile.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "JSONFile",
+                                  "resource://gre/modules/JSONFile.jsm");
+
+let gFileCounter = Math.floor(Math.random() * 1000000);
+
+/**
+ * Returns a reference to a temporary file, that is guaranteed not to exist, and
+ * to have never been created before.
+ *
+ * @param aLeafName
+ *        Suggested leaf name for the file to be created.
+ *
+ * @return nsIFile pointing to a non-existent file in a temporary directory.
+ *
+ * @note It is not enough to delete the file if it exists, or to delete the file
+ *       after calling nsIFile.createUnique, because on Windows the delete
+ *       operation in the file system may still be pending, preventing a new
+ *       file with the same name to be created.
+ */
+function getTempFile(aLeafName)
+{
+  // Prepend a serial number to the extension in the suggested leaf name.
+  let [base, ext] = DownloadPaths.splitBaseNameAndExtension(aLeafName);
+  let leafName = base + "-" + gFileCounter + ext;
+  gFileCounter++;
+
+  // Get a file reference under the temporary directory for this test file.
+  let file = FileUtils.getFile("TmpD", [leafName]);
+  do_check_false(file.exists());
+
+  do_register_cleanup(function () {
+    if (file.exists()) {
+      file.remove(false);
+    }
+  });
+
+  return file;
+}
+
+const TEST_STORE_FILE_NAME = "test-store.json";
+
+const TEST_DATA = {
+  number: 123,
+  string: "test",
+  object: {
+    prop1: 1,
+    prop2: 2,
+  },
+};
+
+// Tests
+
+add_task(function* test_save_reload()
+{
+  let storeForSave = new JSONFile({
+    path: getTempFile(TEST_STORE_FILE_NAME).path,
+  });
+
+  yield storeForSave.load();
+
+  do_check_true(storeForSave.dataReady);
+  do_check_matches(storeForSave.data, {});
+
+  Object.assign(storeForSave.data, TEST_DATA);
+
+  yield new Promise((resolve) => {
+    let save = storeForSave._save.bind(storeForSave);
+    storeForSave._save = () => {
+      save();
+      resolve();
+    };
+    storeForSave.saveSoon();
+  });
+
+  let storeForLoad = new JSONFile({
+    path: storeForSave.path,
+  });
+
+  yield storeForLoad.load();
+
+  Assert.deepEqual(storeForLoad.data, TEST_DATA);
+});
+
+add_task(function* test_load_sync()
+{
+  let storeForSave = new JSONFile({
+    path: getTempFile(TEST_STORE_FILE_NAME).path
+  });
+  yield storeForSave.load();
+  Object.assign(storeForSave.data, TEST_DATA);
+  yield storeForSave._save();
+
+  let storeForLoad = new JSONFile({
+    path: storeForSave.path,
+  });
+  storeForLoad.ensureDataReady();
+
+  Assert.deepEqual(storeForLoad.data, TEST_DATA);
+});
+
+add_task(function* test_load_with_dataPostProcessor()
+{
+  let storeForSave = new JSONFile({
+    path: getTempFile(TEST_STORE_FILE_NAME).path
+  });
+  yield storeForSave.load();
+  Object.assign(storeForSave.data, TEST_DATA);
+  yield storeForSave._save();
+
+  let random = Math.random();
+  let storeForLoad = new JSONFile({
+    path: storeForSave.path,
+    dataPostProcessor: (data) => {
+      Assert.deepEqual(data, TEST_DATA);
+
+      data.test = random;
+      return data;
+    },
+  });
+
+  yield storeForLoad.load();
+
+  do_check_eq(storeForLoad.data.test, random);
+});
+
+add_task(function* test_load_with_dataPostProcessor_fails()
+{
+  let store = new JSONFile({
+    path: getTempFile(TEST_STORE_FILE_NAME).path,
+    dataPostProcessor: () => {
+      throw new Error("dataPostProcessor fails.");
+    },
+  });
+
+  yield Assert.rejects(store.load(), /dataPostProcessor fails\./);
+
+  do_check_false(store.dataReady);
+});
+
+add_task(function* test_load_sync_with_dataPostProcessor_fails()
+{
+  let store = new JSONFile({
+    path: getTempFile(TEST_STORE_FILE_NAME).path,
+    dataPostProcessor: () => {
+      throw new Error("dataPostProcessor fails.");
+    },
+  });
+
+  Assert.throws(() => store.ensureDataReady(), /dataPostProcessor fails\./);
+
+  do_check_false(store.dataReady);
+});
+
+/**
+ * Loads data from a string in a predefined format.  The purpose of this test is
+ * to verify that the JSON format used in previous versions can be loaded.
+ */
+add_task(function* test_load_string_predefined()
+{
+  let store = new JSONFile({
+    path: getTempFile(TEST_STORE_FILE_NAME).path,
+  });
+
+  let string =
+    "{\"number\":123,\"string\":\"test\",\"object\":{\"prop1\":1,\"prop2\":2}}";
+
+  yield OS.File.writeAtomic(store.path, new TextEncoder().encode(string),
+                            { tmpPath: store.path + ".tmp" });
+
+  yield store.load();
+
+  Assert.deepEqual(store.data, TEST_DATA);
+});
+
+/**
+ * Loads data from a malformed JSON string.
+ */
+add_task(function* test_load_string_malformed()
+{
+  let store = new JSONFile({
+    path: getTempFile(TEST_STORE_FILE_NAME).path,
+  });
+
+  let string = "{\"number\":123,\"string\":\"test\",\"object\":{\"prop1\":1,";
+
+  yield OS.File.writeAtomic(store.path, new TextEncoder().encode(string),
+                            { tmpPath: store.path + ".tmp" });
+
+  yield store.load();
+
+  // A backup file should have been created.
+  do_check_true(yield OS.File.exists(store.path + ".corrupt"));
+  yield OS.File.remove(store.path + ".corrupt");
+
+  // The store should be ready to accept new data.
+  do_check_true(store.dataReady);
+  do_check_matches(store.data, {});
+});
+
+/**
+ * Loads data from a malformed JSON string, using the synchronous initialization
+ * path.
+ */
+add_task(function* test_load_string_malformed_sync()
+{
+  let store = new JSONFile({
+    path: getTempFile(TEST_STORE_FILE_NAME).path,
+  });
+
+  let string = "{\"number\":123,\"string\":\"test\",\"object\":{\"prop1\":1,";
+
+  yield OS.File.writeAtomic(store.path, new TextEncoder().encode(string),
+                            { tmpPath: store.path + ".tmp" });
+
+  store.ensureDataReady();
+
+  // A backup file should have been created.
+  do_check_true(yield OS.File.exists(store.path + ".corrupt"));
+  yield OS.File.remove(store.path + ".corrupt");
+
+  // The store should be ready to accept new data.
+  do_check_true(store.dataReady);
+  do_check_matches(store.data, {});
+});
diff --git a/toolkit/modules/tests/xpcshell/test_Log.js b/toolkit/modules/tests/xpcshell/test_Log.js
new file mode 100644
index 000000000..429bbcc50
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_Log.js
@@ -0,0 +1,592 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/* eslint-disable block-spacing */
+
+var {utils: Cu} = Components;
+
+Cu.import("resource://gre/modules/NetUtil.jsm");
+Cu.import("resource://gre/modules/osfile.jsm");
+
+Cu.import("resource://gre/modules/Promise.jsm")
+Cu.import("resource://gre/modules/Log.jsm");
+
+var testFormatter = {
+  format: function format(message) {
+    return message.loggerName + "\t" +
+      message.levelDesc + "\t" +
+      message.message;
+  }
+};
+
+function MockAppender(formatter) {
+  Log.Appender.call(this, formatter);
+  this.messages = [];
+}
+MockAppender.prototype = {
+  __proto__: Log.Appender.prototype,
+
+  doAppend: function DApp_doAppend(message) {
+    this.messages.push(message);
+  }
+};
+
+function run_test() {
+  run_next_test();
+}
+
+add_task(function test_Logger() {
+  let log = Log.repository.getLogger("test.logger");
+  let appender = new MockAppender(new Log.BasicFormatter());
+
+  log.level = Log.Level.Debug;
+  appender.level = Log.Level.Info;
+  log.addAppender(appender);
+  log.info("info test");
+  log.debug("this should be logged but not appended.");
+
+  do_check_eq(appender.messages.length, 1);
+
+  let msgRe = /\d+\ttest.logger\t\INFO\tinfo test/;
+  do_check_true(msgRe.test(appender.messages[0]));
+});
+
+add_task(function test_Logger_parent() {
+  // Check whether parenting is correct
+  let grandparentLog = Log.repository.getLogger("grandparent");
+  let childLog = Log.repository.getLogger("grandparent.parent.child");
+  do_check_eq(childLog.parent.name, "grandparent");
+
+  let parentLog = Log.repository.getLogger("grandparent.parent");
+  do_check_eq(childLog.parent.name, "grandparent.parent");
+
+  // Check that appends are exactly in scope
+  let gpAppender = new MockAppender(new Log.BasicFormatter());
+  gpAppender.level = Log.Level.Info;
+  grandparentLog.addAppender(gpAppender);
+  childLog.info("child info test");
+  Log.repository.rootLogger.info("this shouldn't show up in gpAppender");
+
+  do_check_eq(gpAppender.messages.length, 1);
+  do_check_true(gpAppender.messages[0].indexOf("child info test") > 0);
+});
+
+add_test(function test_LoggerWithMessagePrefix() {
+  let log = Log.repository.getLogger("test.logger.prefix");
+  let appender = new MockAppender(new Log.MessageOnlyFormatter());
+  log.addAppender(appender);
+
+  let prefixed = Log.repository.getLoggerWithMessagePrefix(
+    "test.logger.prefix", "prefix: ");
+
+  log.warn("no prefix");
+  prefixed.warn("with prefix");
+
+  Assert.equal(appender.messages.length, 2, "2 messages were logged.");
+  Assert.deepEqual(appender.messages, [
+    "no prefix",
+    "prefix: with prefix",
+  ], "Prefix logger works.");
+
+  run_next_test();
+});
+
+/*
+ * A utility method for checking object equivalence.
+ * Fields with a reqular expression value in expected will be tested
+ * against the corresponding value in actual. Otherwise objects
+ * are expected to have the same keys and equal values.
+ */
+function checkObjects(expected, actual) {
+  do_check_true(expected instanceof Object);
+  do_check_true(actual instanceof Object);
+  for (let key in expected) {
+    do_check_neq(actual[key], undefined);
+    if (expected[key] instanceof RegExp) {
+      do_check_true(expected[key].test(actual[key].toString()));
+    } else if (expected[key] instanceof Object) {
+      checkObjects(expected[key], actual[key]);
+    } else {
+      do_check_eq(expected[key], actual[key]);
+    }
+  }
+
+  for (let key in actual) {
+    do_check_neq(expected[key], undefined);
+  }
+}
+
+add_task(function test_StructuredLogCommands() {
+  let appender = new MockAppender(new Log.StructuredFormatter());
+  let logger = Log.repository.getLogger("test.StructuredOutput");
+  logger.addAppender(appender);
+  logger.level = Log.Level.Info;
+
+  logger.logStructured("test_message", {_message: "message string one"});
+  logger.logStructured("test_message", {_message: "message string two",
+                                        _level: "ERROR",
+                                        source_file: "test_Log.js"});
+  logger.logStructured("test_message");
+  logger.logStructured("test_message", {source_file: "test_Log.js",
+                                        message_position: 4});
+
+  let messageOne = {"_time": /\d+/,
+                    "_namespace": "test.StructuredOutput",
+                    "_level": "INFO",
+                    "_message": "message string one",
+                    "action": "test_message"};
+
+  let messageTwo = {"_time": /\d+/,
+                    "_namespace": "test.StructuredOutput",
+                    "_level": "ERROR",
+                    "_message": "message string two",
+                    "action": "test_message",
+                    "source_file": "test_Log.js"};
+
+  let messageThree = {"_time": /\d+/,
+                      "_namespace": "test.StructuredOutput",
+                      "_level": "INFO",
+                      "action": "test_message"};
+
+  let messageFour = {"_time": /\d+/,
+                     "_namespace": "test.StructuredOutput",
+                     "_level": "INFO",
+                     "action": "test_message",
+                     "source_file": "test_Log.js",
+                     "message_position": 4};
+
+  checkObjects(messageOne, JSON.parse(appender.messages[0]));
+  checkObjects(messageTwo, JSON.parse(appender.messages[1]));
+  checkObjects(messageThree, JSON.parse(appender.messages[2]));
+  checkObjects(messageFour, JSON.parse(appender.messages[3]));
+
+  let errored = false;
+  try {
+    logger.logStructured("", {_message: "invalid message"});
+  } catch (e) {
+    errored = true;
+    do_check_eq(e, "An action is required when logging a structured message.");
+  } finally {
+    do_check_true(errored);
+  }
+
+  errored = false;
+  try {
+    logger.logStructured("message_action", "invalid params");
+  } catch (e) {
+    errored = true;
+    do_check_eq(e, "The params argument is required to be an object.");
+  } finally {
+    do_check_true(errored);
+  }
+
+  // Logging with unstructured interface should produce the same messages
+  // as the structured interface for these cases.
+  appender = new MockAppender(new Log.StructuredFormatter());
+  logger = Log.repository.getLogger("test.StructuredOutput1");
+  messageOne._namespace = "test.StructuredOutput1";
+  messageTwo._namespace = "test.StructuredOutput1";
+  logger.addAppender(appender);
+  logger.level = Log.Level.All;
+  logger.info("message string one", {action: "test_message"});
+  logger.error("message string two", {action: "test_message",
+                                      source_file: "test_Log.js"});
+
+  checkObjects(messageOne, JSON.parse(appender.messages[0]));
+  checkObjects(messageTwo, JSON.parse(appender.messages[1]));
+});
+
+add_task(function test_StorageStreamAppender() {
+  let appender = new Log.StorageStreamAppender(testFormatter);
+  do_check_eq(appender.getInputStream(), null);
+
+  // Log to the storage stream and verify the log was written and can be
+  // read back.
+  let logger = Log.repository.getLogger("test.StorageStreamAppender");
+  logger.addAppender(appender);
+  logger.info("OHAI");
+  let inputStream = appender.getInputStream();
+  let data = NetUtil.readInputStreamToString(inputStream,
+                                             inputStream.available());
+  do_check_eq(data, "test.StorageStreamAppender\tINFO\tOHAI\n");
+
+  // We can read it again even.
+  let sndInputStream = appender.getInputStream();
+  let sameData = NetUtil.readInputStreamToString(sndInputStream,
+                                                 sndInputStream.available());
+  do_check_eq(data, sameData);
+
+  // Reset the appender and log some more.
+  appender.reset();
+  do_check_eq(appender.getInputStream(), null);
+  logger.debug("wut?!?");
+  inputStream = appender.getInputStream();
+  data = NetUtil.readInputStreamToString(inputStream,
+                                         inputStream.available());
+  do_check_eq(data, "test.StorageStreamAppender\tDEBUG\twut?!?\n");
+});
+
+function fileContents(path) {
+  let decoder = new TextDecoder();
+  return OS.File.read(path).then(array => {
+    return decoder.decode(array);
+  });
+}
+
+add_task(function* test_FileAppender() {
+  // This directory does not exist yet
+  let dir = OS.Path.join(do_get_profile().path, "test_Log");
+  do_check_false(yield OS.File.exists(dir));
+  let path = OS.Path.join(dir, "test_FileAppender");
+  let appender = new Log.FileAppender(path, testFormatter);
+  let logger = Log.repository.getLogger("test.FileAppender");
+  logger.addAppender(appender);
+
+  // Logging to a file that can't be created won't do harm.
+  do_check_false(yield OS.File.exists(path));
+  logger.info("OHAI!");
+
+  yield OS.File.makeDir(dir);
+  logger.info("OHAI");
+  yield appender._lastWritePromise;
+
+  do_check_eq((yield fileContents(path)),
+              "test.FileAppender\tINFO\tOHAI\n");
+
+  logger.info("OHAI");
+  yield appender._lastWritePromise;
+
+  do_check_eq((yield fileContents(path)),
+              "test.FileAppender\tINFO\tOHAI\n" +
+              "test.FileAppender\tINFO\tOHAI\n");
+
+  // Reset the appender and log some more.
+  yield appender.reset();
+  do_check_false(yield OS.File.exists(path));
+
+  logger.debug("O RLY?!?");
+  yield appender._lastWritePromise;
+  do_check_eq((yield fileContents(path)),
+              "test.FileAppender\tDEBUG\tO RLY?!?\n");
+
+  yield appender.reset();
+  logger.debug("1");
+  logger.info("2");
+  logger.info("3");
+  logger.info("4");
+  logger.info("5");
+  // Waiting on only the last promise should account for all of these.
+  yield appender._lastWritePromise;
+
+  // Messages ought to be logged in order.
+  do_check_eq((yield fileContents(path)),
+              "test.FileAppender\tDEBUG\t1\n" +
+              "test.FileAppender\tINFO\t2\n" +
+              "test.FileAppender\tINFO\t3\n" +
+              "test.FileAppender\tINFO\t4\n" +
+              "test.FileAppender\tINFO\t5\n");
+});
+
+add_task(function* test_BoundedFileAppender() {
+  let dir = OS.Path.join(do_get_profile().path, "test_Log");
+
+  if (!(yield OS.File.exists(dir))) {
+    yield OS.File.makeDir(dir);
+  }
+
+  let path = OS.Path.join(dir, "test_BoundedFileAppender");
+  // This appender will hold about two lines at a time.
+  let appender = new Log.BoundedFileAppender(path, testFormatter, 40);
+  let logger = Log.repository.getLogger("test.BoundedFileAppender");
+  logger.addAppender(appender);
+
+  logger.info("ONE");
+  logger.info("TWO");
+  yield appender._lastWritePromise;
+
+  do_check_eq((yield fileContents(path)),
+              "test.BoundedFileAppender\tINFO\tONE\n" +
+              "test.BoundedFileAppender\tINFO\tTWO\n");
+
+  logger.info("THREE");
+  logger.info("FOUR");
+
+  do_check_neq(appender._removeFilePromise, undefined);
+  yield appender._removeFilePromise;
+  yield appender._lastWritePromise;
+
+  do_check_eq((yield fileContents(path)),
+              "test.BoundedFileAppender\tINFO\tTHREE\n" +
+              "test.BoundedFileAppender\tINFO\tFOUR\n");
+
+  yield appender.reset();
+  logger.info("ONE");
+  logger.info("TWO");
+  logger.info("THREE");
+  logger.info("FOUR");
+
+  do_check_neq(appender._removeFilePromise, undefined);
+  yield appender._removeFilePromise;
+  yield appender._lastWritePromise;
+
+  do_check_eq((yield fileContents(path)),
+              "test.BoundedFileAppender\tINFO\tTHREE\n" +
+              "test.BoundedFileAppender\tINFO\tFOUR\n");
+
+});
+
+/*
+ * Test parameter formatting.
+ */
+add_task(function* log_message_with_params() {
+  let formatter = new Log.BasicFormatter();
+
+  function formatMessage(text, params) {
+    let full = formatter.format(new Log.LogMessage("test.logger", Log.Level.Warn, text, params));
+    return full.split("\t")[3];
+  }
+
+  // Strings are substituted directly.
+  do_check_eq(formatMessage("String is ${foo}", {foo: "bar"}),
+              "String is bar");
+
+  // Numbers are substituted.
+  do_check_eq(formatMessage("Number is ${number}", {number: 47}),
+              "Number is 47")
+
+  // The entire params object is JSON-formatted and substituted.
+  do_check_eq(formatMessage("Object is ${}", {foo: "bar"}),
+              'Object is {"foo":"bar"}');
+
+  // An object nested inside params is JSON-formatted and substituted.
+  do_check_eq(formatMessage("Sub object is ${sub}", {sub: {foo: "bar"}}),
+                'Sub object is {"foo":"bar"}');
+
+  // The substitution field is missing from params. Leave the placeholder behind
+  // to make the mistake obvious.
+  do_check_eq(formatMessage("Missing object is ${missing}", {}),
+              'Missing object is ${missing}');
+
+  // Make sure we don't treat the parameter name 'false' as a falsey value.
+  do_check_eq(formatMessage("False is ${false}", {false: true}),
+              'False is true');
+
+  // If an object has a .toJSON method, the formatter uses it.
+  let ob = function() {};
+  ob.toJSON = function() {return {sneaky: "value"}};
+  do_check_eq(formatMessage("JSON is ${sub}", {sub: ob}),
+              'JSON is {"sneaky":"value"}');
+
+  // Fall back to .toSource() if JSON.stringify() fails on an object.
+  ob = function() {};
+  ob.toJSON = function() {throw "oh noes JSON"};
+  do_check_eq(formatMessage("Fail is ${sub}", {sub: ob}),
+              'Fail is (function () {})');
+
+  // Fall back to .toString if both .toJSON and .toSource fail.
+  ob.toSource = function() {throw "oh noes SOURCE"};
+  do_check_eq(formatMessage("Fail is ${sub}", {sub: ob}),
+              'Fail is function () {}');
+
+  // Fall back to '[object]' if .toJSON, .toSource and .toString fail.
+  ob.toString = function() {throw "oh noes STRING"};
+  do_check_eq(formatMessage("Fail is ${sub}", {sub: ob}),
+              'Fail is [object]');
+
+  // If params are passed but there are no substitution in the text
+  // we JSON format and append the entire parameters object.
+  do_check_eq(formatMessage("Text with no subs", {a: "b", c: "d"}),
+              'Text with no subs: {"a":"b","c":"d"}');
+
+  // If we substitute one parameter but not the other,
+  // we ignore any params that aren't substituted.
+  do_check_eq(formatMessage("Text with partial sub ${a}", {a: "b", c: "d"}),
+              'Text with partial sub b');
+
+  // We don't format internal fields stored in params.
+  do_check_eq(formatMessage("Params with _ ${}", {a: "b", _c: "d", _level:20, _message:"froo",
+                                                  _time:123456, _namespace:"here.there"}),
+              'Params with _ {"a":"b","_c":"d"}');
+
+  // Don't print an empty params holder if all params are internal.
+  do_check_eq(formatMessage("All params internal", {_level:20, _message:"froo",
+                                                    _time:123456, _namespace:"here.there"}),
+              'All params internal');
+
+  // Format params with null and undefined values.
+  do_check_eq(formatMessage("Null ${n} undefined ${u}", {n: null, u: undefined}),
+              'Null null undefined undefined');
+
+  // Format params with number, bool, and Object/String type.
+  do_check_eq(formatMessage("number ${n} boolean ${b} boxed Boolean ${bx} String ${s}",
+                            {n: 45, b: false, bx: new Boolean(true), s: new String("whatevs")}),
+              'number 45 boolean false boxed Boolean true String whatevs');
+
+  /*
+   * Check that errors get special formatting if they're formatted directly as
+   * a named param or they're the only param, but not if they're a field in a
+   * larger structure.
+   */
+  let err = Components.Exception("test exception", Components.results.NS_ERROR_FAILURE);
+  let str = formatMessage("Exception is ${}", err);
+  do_check_true(str.includes('Exception is [Exception... "test exception"'));
+  do_check_true(str.includes("(NS_ERROR_FAILURE)"));
+  str = formatMessage("Exception is", err);
+  do_check_true(str.includes('Exception is: [Exception... "test exception"'));
+  str = formatMessage("Exception is ${error}", {error: err});
+  do_check_true(str.includes('Exception is [Exception... "test exception"'));
+  str = formatMessage("Exception is", {_error: err});
+  do_print(str);
+  // Exceptions buried inside objects are formatted badly.
+  do_check_true(str.includes('Exception is: {"_error":{}'));
+  // If the message text is null, the message contains only the formatted params object.
+  str = formatMessage(null, err);
+  do_check_true(str.startsWith('[Exception... "test exception"'));
+  // If the text is null and 'params' is a String object, the message is exactly that string.
+  str = formatMessage(null, new String("String in place of params"));
+  do_check_eq(str, "String in place of params");
+
+  // We use object.valueOf() internally; make sure a broken valueOf() method
+  // doesn't cause the logger to fail.
+  let vOf = {a: 1, valueOf: function() {throw "oh noes valueOf"}};
+  do_check_eq(formatMessage("Broken valueOf ${}", vOf),
+              'Broken valueOf ({a:1, valueOf:(function () {throw "oh noes valueOf"})})');
+
+  // Test edge cases of bad data to formatter:
+  // If 'params' is not an object, format it as a basic type.
+  do_check_eq(formatMessage("non-object no subst", 1),
+              'non-object no subst: 1');
+  do_check_eq(formatMessage("non-object all subst ${}", 2),
+              'non-object all subst 2');
+  do_check_eq(formatMessage("false no subst", false),
+              'false no subst: false');
+  do_check_eq(formatMessage("null no subst", null),
+              'null no subst: null');
+  // If 'params' is undefined and there are no substitutions expected,
+  // the message should still be output.
+  do_check_eq(formatMessage("undefined no subst", undefined),
+              'undefined no subst');
+  // If 'params' is not an object, no named substitutions can succeed;
+  // therefore we leave the placeholder and append the formatted params.
+  do_check_eq(formatMessage("non-object named subst ${junk} space", 3),
+              'non-object named subst ${junk} space: 3');
+  // If there are no params, we leave behind the placeholders in the text.
+  do_check_eq(formatMessage("no params ${missing}", undefined),
+              'no params ${missing}');
+  // If params doesn't contain any of the tags requested in the text,
+  // we leave them all behind and append the formatted params.
+  do_check_eq(formatMessage("object missing tag ${missing} space", {mising: "not here"}),
+              'object missing tag ${missing} space: {"mising":"not here"}');
+  // If we are given null text and no params, the resulting formatted message is empty.
+  do_check_eq(formatMessage(null), '');
+});
+
+/*
+ * If we call a log function with a non-string object in place of the text
+ * argument, and no parameters, treat that the same as logging empty text
+ * with the object argument as parameters. This makes the log useful when the
+ * caller does "catch(err) {logger.error(err)}"
+ */
+add_task(function* test_log_err_only() {
+  let log = Log.repository.getLogger("error.only");
+  let mockFormatter = { format: msg => msg };
+  let appender = new MockAppender(mockFormatter);
+  log.addAppender(appender);
+
+  /*
+   * Check that log.error(err) is treated the same as
+   * log.error(null, err) by the logMessage constructor; the formatMessage()
+   * tests above ensure that the combination of null text and an error object
+   * is formatted correctly.
+   */
+  try {
+    eval("javascript syntax error");
+  }
+  catch (e) {
+    log.error(e);
+    msg = appender.messages.pop();
+    do_check_eq(msg.message, null);
+    do_check_eq(msg.params, e);
+  }
+});
+
+/*
+ * Test logStructured() messages through basic formatter.
+ */
+add_task(function* test_structured_basic() {
+  let log = Log.repository.getLogger("test.logger");
+  let appender = new MockAppender(new Log.BasicFormatter());
+
+  log.level = Log.Level.Info;
+  appender.level = Log.Level.Info;
+  log.addAppender(appender);
+
+  // A structured entry with no _message is treated the same as log./level/(null, params)
+  // except the 'action' field is added to the object.
+  log.logStructured("action", {data: "structure"});
+  do_check_eq(appender.messages.length, 1);
+  do_check_true(appender.messages[0].includes('{"data":"structure","action":"action"}'));
+
+  // A structured entry with _message and substitution is treated the same as
+  // log./level/(null, params).
+  log.logStructured("action", {_message: "Structured sub ${data}", data: "structure"});
+  do_check_eq(appender.messages.length, 2);
+  do_print(appender.messages[1]);
+  do_check_true(appender.messages[1].includes('Structured sub structure'));
+});
+
+/*
+ * Test that all the basic logger methods pass the message and params through to the appender.
+ */
+add_task(function* log_message_with_params() {
+  let log = Log.repository.getLogger("error.logger");
+  let mockFormatter = { format: msg => msg };
+  let appender = new MockAppender(mockFormatter);
+  log.addAppender(appender);
+
+  let testParams = {a:1, b:2};
+  log.fatal("Test fatal", testParams);
+  log.error("Test error", testParams);
+  log.warn("Test warn", testParams);
+  log.info("Test info", testParams);
+  log.config("Test config", testParams);
+  log.debug("Test debug", testParams);
+  log.trace("Test trace", testParams);
+  do_check_eq(appender.messages.length, 7);
+  for (let msg of appender.messages) {
+    do_check_true(msg.params === testParams);
+    do_check_true(msg.message.startsWith("Test "));
+  }
+});
+
+/*
+ * Check that we format JS Errors reasonably.
+ */
+add_task(function* format_errors() {
+  let pFormat = new Log.ParameterFormatter();
+
+  // Test that subclasses of Error are recognized as errors.
+  err = new ReferenceError("Ref Error", "ERROR_FILE", 28);
+  str = pFormat.format(err);
+  do_check_true(str.includes("ReferenceError"));
+  do_check_true(str.includes("ERROR_FILE:28"));
+  do_check_true(str.includes("Ref Error"));
+
+  // Test that JS-generated Errors are recognized and formatted.
+  try {
+    yield Promise.resolve();  // Scrambles the stack
+    eval("javascript syntax error");
+  }
+  catch (e) {
+    str = pFormat.format(e);
+    do_check_true(str.includes("SyntaxError: missing ;"));
+    // Make sure we identified it as an Error and formatted the error location as
+    // lineNumber:columnNumber.
+    do_check_true(str.includes(":1:11)"));
+    // Make sure that we use human-readable stack traces
+    // Check that the error doesn't contain any reference to "Promise.jsm" or "Task.jsm"
+    do_check_false(str.includes("Promise.jsm"));
+    do_check_false(str.includes("Task.jsm"));
+    do_check_true(str.includes("format_errors"));
+  }
+});
diff --git a/toolkit/modules/tests/xpcshell/test_Log_stackTrace.js b/toolkit/modules/tests/xpcshell/test_Log_stackTrace.js
new file mode 100644
index 000000000..6e53db058
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_Log_stackTrace.js
@@ -0,0 +1,30 @@
+print("Define some functions in well defined line positions for the test");
+function foo(v) { return bar(v + 1); } // line 2
+function bar(v) { return baz(v + 1); } // line 3
+function baz(v) { throw new Error(v + 1); } // line 4
+
+print("Make sure lazy constructor calling/assignment works");
+Components.utils.import("resource://gre/modules/Log.jsm");
+
+function run_test() {
+  print("Make sure functions, arguments, files are pretty printed in the trace");
+  let trace = "";
+  try {
+    foo(0);
+  }
+  catch (ex) {
+    trace = Log.stackTrace(ex);
+  }
+  print(`Got trace: ${trace}`);
+  do_check_neq(trace, "");
+
+  let bazPos = trace.indexOf("baz@test_Log_stackTrace.js:4");
+  let barPos = trace.indexOf("bar@test_Log_stackTrace.js:3");
+  let fooPos = trace.indexOf("foo@test_Log_stackTrace.js:2");
+  print(`String positions: ${bazPos} ${barPos} ${fooPos}`);
+
+  print("Make sure the desired messages show up");
+  do_check_true(bazPos >= 0);
+  do_check_true(barPos > bazPos);
+  do_check_true(fooPos > barPos);
+}
diff --git a/toolkit/modules/tests/xpcshell/test_MatchGlobs.js b/toolkit/modules/tests/xpcshell/test_MatchGlobs.js
new file mode 100644
index 000000000..5dcfd19cb
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_MatchGlobs.js
@@ -0,0 +1,58 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+Components.utils.import("resource://gre/modules/MatchPattern.jsm");
+Components.utils.import("resource://gre/modules/Services.jsm");
+
+function test(url, pattern) {
+  let uri = Services.io.newURI(url, null, null);
+  let m = new MatchGlobs(pattern);
+  return m.matches(uri.spec);
+}
+
+function pass({url, pattern}) {
+  ok(test(url, pattern), `Expected match: ${JSON.stringify(pattern)}, ${url}`);
+}
+
+function fail({url, pattern}) {
+  ok(!test(url, pattern), `Expected no match: ${JSON.stringify(pattern)}, ${url}`);
+}
+
+function run_test() {
+  let moz = "http://mozilla.org";
+
+  pass({url: moz, pattern: ["*"]});
+  pass({url: moz, pattern: ["http://*"]}),
+  pass({url: moz, pattern: ["*mozilla*"]});
+  pass({url: moz, pattern: ["*example*", "*mozilla*"]});
+
+  pass({url: moz, pattern: ["*://*"]});
+  pass({url: "https://mozilla.org", pattern: ["*://*"]});
+
+  // Documentation example
+  pass({url: "http://www.example.com/foo/bar", pattern: ["http://???.example.com/foo/*"]});
+  pass({url: "http://the.example.com/foo/", pattern: ["http://???.example.com/foo/*"]});
+  fail({url: "http://my.example.com/foo/bar", pattern: ["http://???.example.com/foo/*"]});
+  fail({url: "http://example.com/foo/", pattern: ["http://???.example.com/foo/*"]});
+  fail({url: "http://www.example.com/foo", pattern: ["http://???.example.com/foo/*"]});
+
+  // Matches path
+  let path = moz + "/abc/def";
+  pass({url: path, pattern: ["*def"]});
+  pass({url: path, pattern: ["*c/d*"]});
+  pass({url: path, pattern: ["*org/abc*"]});
+  fail({url: path + "/", pattern: ["*def"]});
+
+  // Trailing slash
+  pass({url: moz, pattern: ["*.org/"]});
+  fail({url: moz, pattern: ["*.org"]});
+
+  // Wrong TLD
+  fail({url: moz, pattern: ["www*.m*.com/"]});
+  // Case sensitive
+  fail({url: moz, pattern: ["*.ORG/"]});
+
+  fail({url: moz, pattern: []});
+}
diff --git a/toolkit/modules/tests/xpcshell/test_MatchPattern.js b/toolkit/modules/tests/xpcshell/test_MatchPattern.js
new file mode 100644
index 000000000..583038361
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_MatchPattern.js
@@ -0,0 +1,95 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+Components.utils.import("resource://gre/modules/MatchPattern.jsm");
+Components.utils.import("resource://gre/modules/Services.jsm");
+
+function test(url, pattern)
+{
+  let uri = Services.io.newURI(url, null, null);
+  let m = new MatchPattern(pattern);
+  return m.matches(uri);
+}
+
+function pass({url, pattern})
+{
+  do_check_true(test(url, pattern), `Expected match: ${JSON.stringify(pattern)}, ${url}`);
+}
+
+function fail({url, pattern})
+{
+  do_check_false(test(url, pattern), `Expected no match: ${JSON.stringify(pattern)}, ${url}`);
+}
+
+function run_test()
+{
+  // Invalid pattern.
+  fail({url: "http://mozilla.org", pattern: ""});
+
+  // Pattern must include trailing slash.
+  fail({url: "http://mozilla.org", pattern: "http://mozilla.org"});
+
+  // Protocol not allowed.
+  fail({url: "http://mozilla.org", pattern: "gopher://wuarchive.wustl.edu/"});
+
+  pass({url: "http://mozilla.org", pattern: "http://mozilla.org/"});
+  pass({url: "http://mozilla.org/", pattern: "http://mozilla.org/"});
+
+  pass({url: "http://mozilla.org/", pattern: "*://mozilla.org/"});
+  pass({url: "https://mozilla.org/", pattern: "*://mozilla.org/"});
+  fail({url: "file://mozilla.org/", pattern: "*://mozilla.org/"});
+  fail({url: "ftp://mozilla.org/", pattern: "*://mozilla.org/"});
+
+  fail({url: "http://mozilla.com", pattern: "http://*mozilla.com*/"});
+  fail({url: "http://mozilla.com", pattern: "http://mozilla.*/"});
+  fail({url: "http://mozilla.com", pattern: "http:/mozilla.com/"});
+
+  pass({url: "http://google.com", pattern: "http://*.google.com/"});
+  pass({url: "http://docs.google.com", pattern: "http://*.google.com/"});
+
+  pass({url: "http://mozilla.org:8080", pattern: "http://mozilla.org/"});
+  pass({url: "http://mozilla.org:8080", pattern: "*://mozilla.org/"});
+  fail({url: "http://mozilla.org:8080", pattern: "http://mozilla.org:8080/"});
+
+  // Now try with * in the path.
+  pass({url: "http://mozilla.org", pattern: "http://mozilla.org/*"});
+  pass({url: "http://mozilla.org/", pattern: "http://mozilla.org/*"});
+
+  pass({url: "http://mozilla.org/", pattern: "*://mozilla.org/*"});
+  pass({url: "https://mozilla.org/", pattern: "*://mozilla.org/*"});
+  fail({url: "file://mozilla.org/", pattern: "*://mozilla.org/*"});
+  fail({url: "http://mozilla.com", pattern: "http://mozilla.*/*"});
+
+  pass({url: "http://google.com", pattern: "http://*.google.com/*"});
+  pass({url: "http://docs.google.com", pattern: "http://*.google.com/*"});
+
+  // Check path stuff.
+  fail({url: "http://mozilla.com/abc/def", pattern: "http://mozilla.com/"});
+  pass({url: "http://mozilla.com/abc/def", pattern: "http://mozilla.com/*"});
+  pass({url: "http://mozilla.com/abc/def", pattern: "http://mozilla.com/a*f"});
+  pass({url: "http://mozilla.com/abc/def", pattern: "http://mozilla.com/a*"});
+  pass({url: "http://mozilla.com/abc/def", pattern: "http://mozilla.com/*f"});
+  fail({url: "http://mozilla.com/abc/def", pattern: "http://mozilla.com/*e"});
+  fail({url: "http://mozilla.com/abc/def", pattern: "http://mozilla.com/*c"});
+
+  fail({url: "http:///a.html", pattern: "http:///a.html"});
+  pass({url: "file:///foo", pattern: "file:///foo*"});
+  pass({url: "file:///foo/bar.html", pattern: "file:///foo*"});
+
+  pass({url: "http://mozilla.org/a", pattern: "<all_urls>"});
+  pass({url: "https://mozilla.org/a", pattern: "<all_urls>"});
+  pass({url: "ftp://mozilla.org/a", pattern: "<all_urls>"});
+  pass({url: "file:///a", pattern: "<all_urls>"});
+  fail({url: "gopher://wuarchive.wustl.edu/a", pattern: "<all_urls>"});
+
+  // Multiple patterns.
+  pass({url: "http://mozilla.org", pattern: ["http://mozilla.org/"]});
+  pass({url: "http://mozilla.org", pattern: ["http://mozilla.org/", "http://mozilla.com/"]});
+  pass({url: "http://mozilla.com", pattern: ["http://mozilla.org/", "http://mozilla.com/"]});
+  fail({url: "http://mozilla.biz", pattern: ["http://mozilla.org/", "http://mozilla.com/"]});
+
+  // Match url with fragments.
+  pass({url: "http://mozilla.org/base#some-fragment", pattern: "http://mozilla.org/base"});
+}
diff --git a/toolkit/modules/tests/xpcshell/test_MatchURLFilters.js b/toolkit/modules/tests/xpcshell/test_MatchURLFilters.js
new file mode 100644
index 000000000..52e03a6cc
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_MatchURLFilters.js
@@ -0,0 +1,396 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+Components.utils.import("resource://gre/modules/MatchPattern.jsm");
+Components.utils.import("resource://gre/modules/Services.jsm");
+
+function createTestFilter({url, filters}) {
+  let m = new MatchURLFilters(filters);
+  return m.matches(url);
+}
+
+function expectPass({url, filters}) {
+  ok(createTestFilter({url, filters}),
+     `Expected match: ${JSON.stringify(filters)}, ${url}`);
+}
+
+function expectFail({url, filters}) {
+  ok(!createTestFilter({url, filters}),
+     `Expected no match: ${JSON.stringify(filters)}, ${url}`);
+}
+
+function expectThrow({url, filters, exceptionMessageContains}) {
+  let logData = {filters, url};
+
+  Assert.throws(
+    () => {
+      createTestFilter({url, filters});
+    },
+    exceptionMessageContains,
+    `Check received exception for expected message: ${JSON.stringify(logData)}`
+  );
+}
+
+add_task(function* test_match_url_filters() {
+  const shouldPass = true;
+  const shouldFail = true;
+  const shouldThrow = true;
+
+  var testCases = [
+    // Empty, undefined and null filters.
+    {shouldThrow, exceptionMessageContains: "filters array should not be empty",
+     filters: [], url: "http://mozilla.org", },
+    {shouldThrow, exceptionMessageContains: "filters should be an array",
+     filters: undefined, url: "http://mozilla.org"},
+    {shouldThrow, exceptionMessageContains: "filters should be an array",
+     filters: null, url: "http://mozilla.org"},
+
+    // Wrong formats (in a real webextension this will be blocked by the schema validation).
+    {shouldThrow, exceptionMessageContains: "filters should be an array", filters: {},
+     url: "http://mozilla.org"},
+    {shouldThrow, exceptionMessageContains: "filters should be an array",
+     filters: {nonExistentCriteria: true}, url: "http://mozilla.org", },
+    {shouldPass, filters: [{nonExistentCriteria: true}], url: "http://mozilla.org"},
+
+    // Schemes filter over various url schemes.
+    {shouldPass, filters: [{schemes: ["http"]}], url: "http://mozilla.org"},
+    {shouldPass, filters: [{schemes: ["https"]}], url: "https://mozilla.org"},
+    {shouldPass, filters: [{schemes: ["ftp"]}], url: "ftp://fake/ftp/url"},
+    {shouldPass, filters: [{schemes: ["about"]}], url: "about:blank"},
+    {shouldPass, filters: [{schemes: ["data"]}], url: "data:,testDataURL"},
+    {shouldFail, filters: [{schemes: ["http"]}], url: "ftp://fake/ftp/url"},
+
+    // Multiple schemes: pass when at least one scheme matches.
+    {shouldPass, filters: [{schemes: ["https", "about"]}], url: "https://mozilla.org"},
+    {shouldPass, filters: [{schemes: ["about", "https"]}], url: "https://mozilla.org"},
+    {shouldFail, filters: [{schemes: ["about", "http"]}], url: "https://mozilla.org"},
+
+    // Port filter: standard (implicit) ports.
+    {shouldPass, filters: [{ports: [443]}], url: "https://mozilla.org"},
+    {shouldPass, filters: [{ports: [80]}], url: "http://mozilla.org"},
+    {shouldPass, filters: [{ports: [21]}], url: "ftp://ftp.mozilla.org"},
+
+    // Port filter: schemes without a default port.
+    {shouldFail, filters: [{ports: [-1]}], url: "about:blank"},
+    {shouldFail, filters: [{ports: [-1]}], url: "data:,testDataURL"},
+
+    {shouldFail, filters: [{ports: [[1, 65535]]}], url: "about:blank"},
+    {shouldFail, filters: [{ports: [[1, 65535]]}], url: "data:,testDataURL"},
+
+    // Host filters (hostEquals, hostContains, hostPrefix, hostSuffix): schemes with an host.
+    {shouldFail, filters: [{hostEquals: ""}], url: "https://mozilla.org"},
+    {shouldPass, filters: [{hostEquals: null}], url: "https://mozilla.org"},
+    {shouldPass, filters: [{hostEquals: "mozilla.org"}], url: "https://mozilla.org"},
+    {shouldFail, filters: [{hostEquals: "mozilla.com"}], url: "https://mozilla.org"},
+    // NOTE: trying at least once another valid protocol.
+    {shouldPass, filters: [{hostEquals: "mozilla.org"}], url: "ftp://mozilla.org"},
+    {shouldFail, filters: [{hostEquals: "mozilla.com"}], url: "ftp://mozilla.org"},
+    {shouldPass, filters: [{hostEquals: "mozilla.org"}], url: "https://mozilla.org:8888"},
+
+    {shouldPass, filters: [{hostContains: "moz"}], url: "https://mozilla.org"},
+    // NOTE: an implicit '.' char is inserted into the host.
+    {shouldPass, filters: [{hostContains: ".moz"}], url: "https://mozilla.org"},
+    {shouldFail, filters: [{hostContains: "com"}], url: "https://mozilla.org"},
+    {shouldPass, filters: [{hostContains: ""}], url: "https://mozilla.org"},
+    {shouldPass, filters: [{hostContains: null}], url: "https://mozilla.org"},
+
+    {shouldPass, filters: [{hostPrefix: "moz"}], url: "https://mozilla.org"},
+    {shouldFail, filters: [{hostPrefix: "org"}], url: "https://mozilla.org"},
+    {shouldPass, filters: [{hostPrefix: ""}], url: "https://mozilla.org"},
+    {shouldPass, filters: [{hostPrefix: null}], url: "https://mozilla.org"},
+
+    {shouldPass, filters: [{hostSuffix: ".org"}], url: "https://mozilla.org"},
+    {shouldFail, filters: [{hostSuffix: "moz"}], url: "https://mozilla.org"},
+    {shouldPass, filters: [{hostSuffix: ""}], url: "https://mozilla.org"},
+    {shouldPass, filters: [{hostSuffix: null}], url: "https://mozilla.org"},
+    {shouldPass, filters: [{hostSuffix: "lla.org"}], url: "https://mozilla.org:8888"},
+
+    // hostEquals: urls without an host.
+    // TODO: should we explicitly cover hostContains, hostPrefix, hostSuffix for
+    // these sub-cases?
+    {shouldFail, filters: [{hostEquals: "blank"}], url: "about:blank"},
+    {shouldFail, filters: [{hostEquals: "blank"}], url: "about://blank"},
+    {shouldFail, filters: [{hostEquals: "testDataURL"}], url: "data:,testDataURL"},
+    {shouldPass, filters: [{hostEquals: ""}], url: "about:blank"},
+    {shouldPass, filters: [{hostEquals: ""}], url: "about://blank"},
+    {shouldPass, filters: [{hostEquals: ""}], url: "data:,testDataURL"},
+
+    // Path filters (pathEquals, pathContains, pathPrefix, pathSuffix).
+    {shouldFail, filters: [{pathEquals: ""}], url: "https://mozilla.org/test/path"},
+    {shouldPass, filters: [{pathEquals: null}], url: "https://mozilla.org/test/path"},
+    {shouldPass, filters: [{pathEquals: "/test/path"}], url: "https://mozilla.org/test/path"},
+    {shouldFail, filters: [{pathEquals: "/wrong/path"}], url: "https://mozilla.org/test/path"},
+    {shouldPass, filters: [{pathEquals: "/test/path"}], url: "https://mozilla.org:8888/test/path"},
+    // NOTE: trying at least once another valid protocol
+    {shouldPass, filters: [{pathEquals: "/test/path"}], url: "ftp://mozilla.org/test/path"},
+    {shouldFail, filters: [{pathEquals: "/wrong/path"}], url: "ftp://mozilla.org/test/path"},
+
+    {shouldPass, filters: [{pathContains: "st/"}], url: "https://mozilla.org/test/path"},
+    {shouldPass, filters: [{pathContains: "/test"}], url: "https://mozilla.org/test/path"},
+    {shouldFail, filters: [{pathContains: "org"}], url: "https://mozilla.org/test/path"},
+    {shouldPass, filters: [{pathContains: ""}], url: "https://mozilla.org/test/path"},
+    {shouldPass, filters: [{pathContains: null}], url: "https://mozilla.org/test/path"},
+    {shouldFail, filters: [{pathContains: "param"}], url: "https://mozilla.org:8888/test/path?param=1"},
+    {shouldFail, filters: [{pathContains: "ref"}], url: "https://mozilla.org:8888/test/path#ref"},
+    {shouldPass, filters: [{pathContains: "st/pa"}], url: "https://mozilla.org:8888/test/path"},
+
+    {shouldPass, filters: [{pathPrefix: "/te"}], url: "https://mozilla.org/test/path"},
+    {shouldFail, filters: [{pathPrefix: "org/"}], url: "https://mozilla.org/test/path"},
+    {shouldPass, filters: [{pathPrefix: ""}], url: "https://mozilla.org/test/path"},
+    {shouldPass, filters: [{pathPrefix: null}], url: "https://mozilla.org/test/path"},
+
+    {shouldPass, filters: [{pathSuffix: "/path"}], url: "https://mozilla.org/test/path"},
+    {shouldFail, filters: [{pathSuffix: "th/"}], url: "https://mozilla.org/test/path"},
+    {shouldPass, filters: [{pathSuffix: ""}], url: "https://mozilla.org/test/path"},
+    {shouldPass, filters: [{pathSuffix: null}], url: "https://mozilla.org/test/path"},
+    {shouldFail, filters: [{pathSuffix: "p=1"}], url: "https://mozilla.org:8888/test/path?p=1"},
+    {shouldFail, filters: [{pathSuffix: "ref"}], url: "https://mozilla.org:8888/test/path#ref"},
+
+    // Query filters (queryEquals, queryContains, queryPrefix, querySuffix).
+    {shouldFail, filters: [{queryEquals: ""}], url: "https://mozilla.org/?param=val"},
+    {shouldPass, filters: [{queryEquals: null}], url: "https://mozilla.org/?param=val"},
+    {shouldPass, filters: [{queryEquals: "param=val"}], url: "https://mozilla.org/?param=val"},
+    {shouldFail, filters: [{queryEquals: "?param=val"}], url: "https://mozilla.org/?param=val"},
+    {shouldFail, filters: [{queryEquals: "/path?param=val"}], url: "https://mozilla.org/path?param=val"},
+
+    // NOTE: about scheme urls cannot be matched by query.
+    {shouldFail, filters: [{queryEquals: "param=val"}], url: "about:blank?param=val"},
+    {shouldFail, filters: [{queryEquals: "param"}], url: "ftp://mozilla.org?param=val"},
+
+    {shouldPass, filters: [{queryContains: "ram"}], url: "https://mozilla.org/?param=val"},
+    {shouldPass, filters: [{queryContains: "=val"}], url: "https://mozilla.org/?param=val"},
+    {shouldFail, filters: [{queryContains: "?param"}], url: "https://mozilla.org/?param=val"},
+    {shouldFail, filters: [{queryContains: "path"}], url: "https://mozilla.org/path/?p=v#ref"},
+    {shouldPass, filters: [{queryContains: ""}], url: "https://mozilla.org/?param=val"},
+    {shouldPass, filters: [{queryContains: null}], url: "https://mozilla.org/?param=val"},
+
+    {shouldPass, filters: [{queryPrefix: "param"}], url: "https://mozilla.org/?param=val"},
+    {shouldFail, filters: [{queryPrefix: "p="}], url: "https://mozilla.org/?param=val"},
+    {shouldFail, filters: [{queryPrefix: "path"}], url: "https://mozilla.org/path?param=val"},
+    {shouldPass, filters: [{queryPrefix: ""}], url: "https://mozilla.org/?param=val"},
+    {shouldPass, filters: [{queryPrefix: null}], url: "https://mozilla.org/?param=val"},
+
+    {shouldPass, filters: [{querySuffix: "=val"}], url: "https://mozilla.org/?param=val"},
+    {shouldFail, filters: [{querySuffix: "=wrong"}], url: "https://mozilla.org/?param=val"},
+    {shouldPass, filters: [{querySuffix: ""}], url: "https://mozilla.org/?param=val"},
+    {shouldPass, filters: [{querySuffix: null}], url: "https://mozilla.org/?param=val"},
+
+    // URL filters (urlEquals, urlContains, urlPrefix, urlSuffix).
+    {shouldFail, filters: [{urlEquals: ""}], url: "https://mozilla.org/?p=v#ref"},
+    {shouldPass, filters: [{urlEquals: null}], url: "https://mozilla.org/?p=v#ref"},
+    {shouldPass, filters: [{urlEquals: "https://mozilla.org/?p=v#ref"}],
+     url: "https://mozilla.org/?p=v#ref"},
+    {shouldFail, filters: [{urlEquals: "https://mozilla.org/?p=v#ref2"}],
+     url: "https://mozilla.org/?p=v#ref"},
+    {shouldPass, filters: [{urlEquals: "about:blank?p=v#ref"}], url: "about:blank?p=v#ref"},
+    {shouldPass, filters: [{urlEquals: "ftp://mozilla.org?p=v#ref"}],
+     url: "ftp://mozilla.org?p=v#ref"},
+
+    {shouldPass, filters: [{urlContains: "org/?p"}], url: "https://mozilla.org/?p=v#ref"},
+    {shouldPass, filters: [{urlContains: "=v#ref"}], url: "https://mozilla.org/?p=v#ref"},
+    {shouldFail, filters: [{urlContains: "ftp"}], url: "https://mozilla.org/?p=v#ref"},
+    {shouldPass, filters: [{urlContains: ""}], url: "https://mozilla.org/?p=v#ref"},
+    {shouldPass, filters: [{urlContains: null}], url: "https://mozilla.org/?p=v#ref"},
+
+    {shouldPass, filters: [{urlPrefix: "http"}], url: "https://mozilla.org/?p=v#ref"},
+    {shouldFail, filters: [{urlPrefix: "moz"}], url: "https://mozilla.org/?p=v#ref"},
+    {shouldPass, filters: [{urlPrefix: ""}], url: "https://mozilla.org/?p=v#ref"},
+    {shouldPass, filters: [{urlPrefix: null}], url: "https://mozilla.org/?p=v#ref"},
+
+    {shouldPass, filters: [{urlSuffix: "#ref"}], url: "https://mozilla.org/?p=v#ref"},
+    {shouldFail, filters: [{urlSuffix: "=wrong"}], url: "https://mozilla.org/?p=v#ref"},
+    {shouldPass, filters: [{urlSuffix: ""}], url: "https://mozilla.org/?p=v#ref"},
+    {shouldPass, filters: [{urlSuffix: null}], url: "https://mozilla.org/?p=v#ref"},
+
+    // More url filters: urlMatches.
+    {shouldPass, filters: [{urlMatches: ".*://mozilla"}], url: "https://mozilla.org/?p=v#ref"},
+    {shouldPass, filters: [{urlMatches: ".*://mozilla"}], url: "ftp://mozilla.org/?p=v#ref"},
+    {shouldPass, filters: [{urlMatches: ".*://.*/\?p"}], url: "ftp://mozilla.org/?p=v#ref"},
+    // NOTE: urlMatches should not match the url without the ref.
+    {shouldFail, filters: [{urlMatches: "v#ref$"}], url: "https://mozilla.org/?p=v#ref"},
+    {shouldPass, filters: [{urlMatches: "^ftp"}], url: "ftp://mozilla.org/?p=v#ref"},
+
+    // More url filters: originAndPathMatches.
+    {shouldPass, filters: [{originAndPathMatches: ".*://mozilla"}],
+     url: "https://mozilla.org/?p=v#ref"},
+    {shouldPass, filters: [{originAndPathMatches: ".*://mozilla"}],
+     url: "ftp://mozilla.org/?p=v#ref"},
+    // NOTE: urlMatches should not match the url without the query and the ref.
+    {shouldFail, filters: [{originAndPathMatches: ".*://.*/\?p"}],
+     url: "ftp://mozilla.org/?p=v#ref"},
+    {shouldFail, filters: [{originAndPathMatches: "v#ref$"}],
+     url: "https://mozilla.org/?p=v#ref"},
+    {shouldPass, filters: [{originAndPathMatches: "^ftp"}],
+     url: "ftp://mozilla.org/?p=v#ref"},
+
+    // Filter with all criteria: all matches, none matches, some matches.
+
+    // All matches.
+    {shouldPass, filters: [
+      {
+        schemes: ["https", "http"],
+        ports: [443, 80],
+        hostEquals: "www.mozilla.org",
+        hostContains: ".moz",
+        hostPrefix: "www",
+        hostSuffix: "org",
+        pathEquals: "/sub/path",
+        pathContains: "b/p",
+        pathPrefix: "/sub",
+        pathSuffix: "/path",
+        queryEquals: "p=v",
+        queryContains: "1=",
+        queryPrefix: "p1",
+        querySuffix: "=v",
+        urlEquals: "https://www.mozilla.org/sub/path?p1=v#ref",
+        urlContains: "org/sub",
+        urlPrefix: "https://moz",
+        urlSuffix: "#ref",
+        urlMatches: "v#ref$",
+        originAndPathMatches: ".*://moz.*/"
+      },
+    ], url: "https://www.mozilla.org/sub/path?p1=v#ref"},
+    // None matches.
+    {shouldFail, filters: [
+      {
+        schemes: ["http"],
+        ports: [80],
+        hostEquals: "mozilla.com",
+        hostContains: "www.moz",
+        hostPrefix: "www",
+        hostSuffix: "com",
+        pathEquals: "/wrong/path",
+        pathContains: "g/p",
+        pathPrefix: "/wrong",
+        pathSuffix: "/wrong",
+        queryEquals: "p2=v",
+        queryContains: "2=",
+        queryPrefix: "p2",
+        querySuffix: "=value",
+        urlEquals: "http://mozilla.com/sub/path?p1=v#ref",
+        urlContains: "com/sub",
+        urlPrefix: "http://moz",
+        urlSuffix: "#ref2",
+        urlMatches: "value#ref2$",
+        originAndPathMatches: ".*://moz.*com/"
+      },
+    ], url: "https://mozilla.org/sub/path?p1=v#ref"},
+    // Some matches
+    {shouldFail, filters: [
+      {
+        schemes: ["https"],
+        ports: [80],
+        hostEquals: "mozilla.com",
+        hostContains: "www.moz",
+        hostPrefix: "www",
+        hostSuffix: "com",
+        pathEquals: "/wrong/path",
+        pathContains: "g/p",
+        pathPrefix: "/wrong",
+        pathSuffix: "/wrong",
+        queryEquals: "p2=v",
+        queryContains: "2=",
+        queryPrefix: "p2",
+        querySuffix: "=value",
+        urlEquals: "http://mozilla.com/sub/path?p1=v#ref",
+        urlContains: "com/sub",
+        urlPrefix: "http://moz",
+        urlSuffix: "#ref2",
+        urlMatches: "value#ref2$",
+        originAndPathMatches: ".*://moz.*com/"
+      },
+    ], url: "https://mozilla.org/sub/path?p1=v#ref"},
+
+    // Filter with multiple filters: all matches, some matches, none matches.
+
+    // All matches.
+    {shouldPass, filters: [
+      {schemes: ["https", "http"]},
+      {ports: [443, 80]},
+      {hostEquals: "www.mozilla.org"},
+      {hostContains: ".moz"},
+      {hostPrefix: "www"},
+      {hostSuffix: "org"},
+      {pathEquals: "/sub/path"},
+      {pathContains: "b/p"},
+      {pathPrefix: "/sub"},
+      {pathSuffix: "/path"},
+      {queryEquals: "p=v"},
+      {queryContains: "1="},
+      {queryPrefix: "p1"},
+      {querySuffix: "=v"},
+      {urlEquals: "https://www.mozilla.org/sub/path?p1=v#ref"},
+      {urlContains: "org/sub"},
+      {urlPrefix: "https://moz"},
+      {urlSuffix: "#ref"},
+      {urlMatches: "v#ref$"},
+      {originAndPathMatches: ".*://moz.*/"},
+    ], url: "https://www.mozilla.org/sub/path?p1=v#ref"},
+
+    // None matches.
+    {shouldFail, filters: [
+      {schemes: ["http"]},
+      {ports: [80]},
+      {hostEquals: "mozilla.com"},
+      {hostContains: "www.moz"},
+      {hostPrefix: "www"},
+      {hostSuffix: "com"},
+      {pathEquals: "/wrong/path"},
+      {pathContains: "g/p"},
+      {pathPrefix: "/wrong"},
+      {pathSuffix: "/wrong"},
+      {queryEquals: "p2=v"},
+      {queryContains: "2="},
+      {queryPrefix: "p2"},
+      {querySuffix: "=value"},
+      {urlEquals: "http://mozilla.com/sub/path?p1=v#ref"},
+      {urlContains: "com/sub"},
+      {urlPrefix: "http://moz"},
+      {urlSuffix: "#ref2"},
+      {urlMatches: "value#ref2$"},
+      {originAndPathMatches: ".*://moz.*com/"},
+    ], url: "https://mozilla.org/sub/path?p1=v#ref"},
+
+    // Some matches.
+    {shouldPass, filters: [
+      {schemes: ["https"]},
+      {ports: [80]},
+      {hostEquals: "mozilla.com"},
+      {hostContains: "www.moz"},
+      {hostPrefix: "www"},
+      {hostSuffix: "com"},
+      {pathEquals: "/wrong/path"},
+      {pathContains: "g/p"},
+      {pathPrefix: "/wrong"},
+      {pathSuffix: "/wrong"},
+      {queryEquals: "p2=v"},
+      {queryContains: "2="},
+      {queryPrefix: "p2"},
+      {querySuffix: "=value"},
+      {urlEquals: "http://mozilla.com/sub/path?p1=v#ref"},
+      {urlContains: "com/sub"},
+      {urlPrefix: "http://moz"},
+      {urlSuffix: "#ref2"},
+      {urlMatches: "value#ref2$"},
+      {originAndPathMatches: ".*://moz.*com/"},
+    ], url: "https://mozilla.org/sub/path?p1=v#ref"},
+  ];
+
+  // Run all the the testCases defined above.
+  for (let currentTest of testCases) {
+    let {
+      exceptionMessageContains,
+      url, filters,
+    } = currentTest;
+
+    if (currentTest.shouldThrow) {
+      expectThrow({url, filters, exceptionMessageContains})
+    } else if (currentTest.shouldFail) {
+      expectFail({url, filters});
+    } else {
+      expectPass({url, filters});
+    }
+  }
+});
diff --git a/toolkit/modules/tests/xpcshell/test_NewTabUtils.js b/toolkit/modules/tests/xpcshell/test_NewTabUtils.js
new file mode 100644
index 000000000..8cdb63550
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_NewTabUtils.js
@@ -0,0 +1,378 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// See also browser/base/content/test/newtab/.
+
+var { classes: Cc, interfaces: Ci, results: Cr, utils: Cu } = Components;
+Cu.import("resource://gre/modules/NewTabUtils.jsm");
+Cu.import("resource://gre/modules/Promise.jsm");
+Cu.import("resource://gre/modules/Task.jsm");
+Cu.import("resource://gre/modules/Services.jsm");
+
+const PREF_NEWTAB_ENHANCED = "browser.newtabpage.enhanced";
+
+function run_test() {
+  Services.prefs.setBoolPref(PREF_NEWTAB_ENHANCED, true);
+  run_next_test();
+}
+
+add_task(function* validCacheMidPopulation() {
+  let expectedLinks = makeLinks(0, 3, 1);
+
+  let provider = new TestProvider(done => done(expectedLinks));
+  provider.maxNumLinks = expectedLinks.length;
+
+  NewTabUtils.initWithoutProviders();
+  NewTabUtils.links.addProvider(provider);
+  let promise = new Promise(resolve => NewTabUtils.links.populateCache(resolve));
+
+  // isTopSiteGivenProvider() and getProviderLinks() should still return results
+  // even when cache is empty or being populated.
+  do_check_false(NewTabUtils.isTopSiteGivenProvider("example1.com", provider));
+  do_check_links(NewTabUtils.getProviderLinks(provider), []);
+
+  yield promise;
+
+  // Once the cache is populated, we get the expected results
+  do_check_true(NewTabUtils.isTopSiteGivenProvider("example1.com", provider));
+  do_check_links(NewTabUtils.getProviderLinks(provider), expectedLinks);
+  NewTabUtils.links.removeProvider(provider);
+});
+
+add_task(function* notifyLinkDelete() {
+  let expectedLinks = makeLinks(0, 3, 1);
+
+  let provider = new TestProvider(done => done(expectedLinks));
+  provider.maxNumLinks = expectedLinks.length;
+
+  NewTabUtils.initWithoutProviders();
+  NewTabUtils.links.addProvider(provider);
+  yield new Promise(resolve => NewTabUtils.links.populateCache(resolve));
+
+  do_check_links(NewTabUtils.links.getLinks(), expectedLinks);
+
+  // Remove a link.
+  let removedLink = expectedLinks[2];
+  provider.notifyLinkChanged(removedLink, 2, true);
+  let links = NewTabUtils.links._providers.get(provider);
+
+  // Check that sortedLinks is correctly updated.
+  do_check_links(NewTabUtils.links.getLinks(), expectedLinks.slice(0, 2));
+
+  // Check that linkMap is accurately updated.
+  do_check_eq(links.linkMap.size, 2);
+  do_check_true(links.linkMap.get(expectedLinks[0].url));
+  do_check_true(links.linkMap.get(expectedLinks[1].url));
+  do_check_false(links.linkMap.get(removedLink.url));
+
+  // Check that siteMap is correctly updated.
+  do_check_eq(links.siteMap.size, 2);
+  do_check_true(links.siteMap.has(NewTabUtils.extractSite(expectedLinks[0].url)));
+  do_check_true(links.siteMap.has(NewTabUtils.extractSite(expectedLinks[1].url)));
+  do_check_false(links.siteMap.has(NewTabUtils.extractSite(removedLink.url)));
+
+  NewTabUtils.links.removeProvider(provider);
+});
+
+add_task(function* populatePromise() {
+  let count = 0;
+  let expectedLinks = makeLinks(0, 10, 2);
+
+  let getLinksFcn = Task.async(function* (callback) {
+    // Should not be calling getLinksFcn twice
+    count++;
+    do_check_eq(count, 1);
+    yield Promise.resolve();
+    callback(expectedLinks);
+  });
+
+  let provider = new TestProvider(getLinksFcn);
+
+  NewTabUtils.initWithoutProviders();
+  NewTabUtils.links.addProvider(provider);
+
+  NewTabUtils.links.populateProviderCache(provider, () => {});
+  NewTabUtils.links.populateProviderCache(provider, () => {
+    do_check_links(NewTabUtils.links.getLinks(), expectedLinks);
+    NewTabUtils.links.removeProvider(provider);
+  });
+});
+
+add_task(function* isTopSiteGivenProvider() {
+  let expectedLinks = makeLinks(0, 10, 2);
+
+  // The lowest 2 frecencies have the same base domain.
+  expectedLinks[expectedLinks.length - 2].url = expectedLinks[expectedLinks.length - 1].url + "Test";
+
+  let provider = new TestProvider(done => done(expectedLinks));
+  provider.maxNumLinks = expectedLinks.length;
+
+  NewTabUtils.initWithoutProviders();
+  NewTabUtils.links.addProvider(provider);
+  yield new Promise(resolve => NewTabUtils.links.populateCache(resolve));
+
+  do_check_eq(NewTabUtils.isTopSiteGivenProvider("example2.com", provider), true);
+  do_check_eq(NewTabUtils.isTopSiteGivenProvider("example1.com", provider), false);
+
+  // Push out frecency 2 because the maxNumLinks is reached when adding frecency 3
+  let newLink = makeLink(3);
+  provider.notifyLinkChanged(newLink);
+
+  // There is still a frecent url with example2 domain, so it's still frecent.
+  do_check_eq(NewTabUtils.isTopSiteGivenProvider("example3.com", provider), true);
+  do_check_eq(NewTabUtils.isTopSiteGivenProvider("example2.com", provider), true);
+
+  // Push out frecency 3
+  newLink = makeLink(5);
+  provider.notifyLinkChanged(newLink);
+
+  // Push out frecency 4
+  newLink = makeLink(9);
+  provider.notifyLinkChanged(newLink);
+
+  // Our count reached 0 for the example2.com domain so it's no longer a frecent site.
+  do_check_eq(NewTabUtils.isTopSiteGivenProvider("example5.com", provider), true);
+  do_check_eq(NewTabUtils.isTopSiteGivenProvider("example2.com", provider), false);
+
+  NewTabUtils.links.removeProvider(provider);
+});
+
+add_task(function* multipleProviders() {
+  // Make each provider generate NewTabUtils.links.maxNumLinks links to check
+  // that no more than maxNumLinks are actually returned in the merged list.
+  let evenLinks = makeLinks(0, 2 * NewTabUtils.links.maxNumLinks, 2);
+  let evenProvider = new TestProvider(done => done(evenLinks));
+  let oddLinks = makeLinks(0, 2 * NewTabUtils.links.maxNumLinks - 1, 2);
+  let oddProvider = new TestProvider(done => done(oddLinks));
+
+  NewTabUtils.initWithoutProviders();
+  NewTabUtils.links.addProvider(evenProvider);
+  NewTabUtils.links.addProvider(oddProvider);
+
+  yield new Promise(resolve => NewTabUtils.links.populateCache(resolve));
+
+  let links = NewTabUtils.links.getLinks();
+  let expectedLinks = makeLinks(NewTabUtils.links.maxNumLinks,
+                                2 * NewTabUtils.links.maxNumLinks,
+                                1);
+  do_check_eq(links.length, NewTabUtils.links.maxNumLinks);
+  do_check_links(links, expectedLinks);
+
+  NewTabUtils.links.removeProvider(evenProvider);
+  NewTabUtils.links.removeProvider(oddProvider);
+});
+
+add_task(function* changeLinks() {
+  let expectedLinks = makeLinks(0, 20, 2);
+  let provider = new TestProvider(done => done(expectedLinks));
+
+  NewTabUtils.initWithoutProviders();
+  NewTabUtils.links.addProvider(provider);
+
+  yield new Promise(resolve => NewTabUtils.links.populateCache(resolve));
+
+  do_check_links(NewTabUtils.links.getLinks(), expectedLinks);
+
+  // Notify of a new link.
+  let newLink = makeLink(19);
+  expectedLinks.splice(1, 0, newLink);
+  provider.notifyLinkChanged(newLink);
+  do_check_links(NewTabUtils.links.getLinks(), expectedLinks);
+
+  // Notify of a link that's changed sort criteria.
+  newLink.frecency = 17;
+  expectedLinks.splice(1, 1);
+  expectedLinks.splice(2, 0, newLink);
+  provider.notifyLinkChanged({
+    url: newLink.url,
+    frecency: 17,
+  });
+  do_check_links(NewTabUtils.links.getLinks(), expectedLinks);
+
+  // Notify of a link that's changed title.
+  newLink.title = "My frecency is now 17";
+  provider.notifyLinkChanged({
+    url: newLink.url,
+    title: newLink.title,
+  });
+  do_check_links(NewTabUtils.links.getLinks(), expectedLinks);
+
+  // Notify of a new link again, but this time make it overflow maxNumLinks.
+  provider.maxNumLinks = expectedLinks.length;
+  newLink = makeLink(21);
+  expectedLinks.unshift(newLink);
+  expectedLinks.pop();
+  do_check_eq(expectedLinks.length, provider.maxNumLinks); // Sanity check.
+  provider.notifyLinkChanged(newLink);
+  do_check_links(NewTabUtils.links.getLinks(), expectedLinks);
+
+  // Notify of many links changed.
+  expectedLinks = makeLinks(0, 3, 1);
+  provider.notifyManyLinksChanged();
+
+  // Since _populateProviderCache() is async, we must wait until the provider's
+  // populate promise has been resolved.
+  yield NewTabUtils.links._providers.get(provider).populatePromise;
+
+  // NewTabUtils.links will now repopulate its cache
+  do_check_links(NewTabUtils.links.getLinks(), expectedLinks);
+
+  NewTabUtils.links.removeProvider(provider);
+});
+
+add_task(function* oneProviderAlreadyCached() {
+  let links1 = makeLinks(0, 10, 1);
+  let provider1 = new TestProvider(done => done(links1));
+
+  NewTabUtils.initWithoutProviders();
+  NewTabUtils.links.addProvider(provider1);
+
+  yield new Promise(resolve => NewTabUtils.links.populateCache(resolve));
+  do_check_links(NewTabUtils.links.getLinks(), links1);
+
+  let links2 = makeLinks(10, 20, 1);
+  let provider2 = new TestProvider(done => done(links2));
+  NewTabUtils.links.addProvider(provider2);
+
+  yield new Promise(resolve => NewTabUtils.links.populateCache(resolve));
+  do_check_links(NewTabUtils.links.getLinks(), links2.concat(links1));
+
+  NewTabUtils.links.removeProvider(provider1);
+  NewTabUtils.links.removeProvider(provider2);
+});
+
+add_task(function* newLowRankedLink() {
+  // Init a provider with 10 links and make its maximum number also 10.
+  let links = makeLinks(0, 10, 1);
+  let provider = new TestProvider(done => done(links));
+  provider.maxNumLinks = links.length;
+
+  NewTabUtils.initWithoutProviders();
+  NewTabUtils.links.addProvider(provider);
+
+  yield new Promise(resolve => NewTabUtils.links.populateCache(resolve));
+  do_check_links(NewTabUtils.links.getLinks(), links);
+
+  // Notify of a new link that's low-ranked enough not to make the list.
+  let newLink = makeLink(0);
+  provider.notifyLinkChanged(newLink);
+  do_check_links(NewTabUtils.links.getLinks(), links);
+
+  // Notify about the new link's title change.
+  provider.notifyLinkChanged({
+    url: newLink.url,
+    title: "a new title",
+  });
+  do_check_links(NewTabUtils.links.getLinks(), links);
+
+  NewTabUtils.links.removeProvider(provider);
+});
+
+add_task(function* extractSite() {
+  // All these should extract to the same site
+  [ "mozilla.org",
+    "m.mozilla.org",
+    "mobile.mozilla.org",
+    "www.mozilla.org",
+    "www3.mozilla.org",
+  ].forEach(host => {
+    let url = "http://" + host;
+    do_check_eq(NewTabUtils.extractSite(url), "mozilla.org", "extracted same " + host);
+  });
+
+  // All these should extract to the same subdomain
+  [ "bugzilla.mozilla.org",
+    "www.bugzilla.mozilla.org",
+  ].forEach(host => {
+    let url = "http://" + host;
+    do_check_eq(NewTabUtils.extractSite(url), "bugzilla.mozilla.org", "extracted eTLD+2 " + host);
+  });
+
+  // All these should not extract to the same site
+  [ "bugzilla.mozilla.org",
+    "bug123.bugzilla.mozilla.org",
+    "too.many.levels.bugzilla.mozilla.org",
+    "m2.mozilla.org",
+    "mobile30.mozilla.org",
+    "ww.mozilla.org",
+    "ww2.mozilla.org",
+    "wwwww.mozilla.org",
+    "wwwww50.mozilla.org",
+    "wwws.mozilla.org",
+    "secure.mozilla.org",
+    "secure10.mozilla.org",
+    "many.levels.deep.mozilla.org",
+    "just.check.in",
+    "192.168.0.1",
+    "localhost",
+  ].forEach(host => {
+    let url = "http://" + host;
+    do_check_neq(NewTabUtils.extractSite(url), "mozilla.org", "extracted diff " + host);
+  });
+
+  // All these should not extract to the same site
+  [ "about:blank",
+    "file:///Users/user/file",
+    "chrome://browser/something",
+    "ftp://ftp.mozilla.org/",
+  ].forEach(url => {
+    do_check_neq(NewTabUtils.extractSite(url), "mozilla.org", "extracted diff url " + url);
+  });
+});
+
+function TestProvider(getLinksFn) {
+  this.getLinks = getLinksFn;
+  this._observers = new Set();
+}
+
+TestProvider.prototype = {
+  addObserver: function (observer) {
+    this._observers.add(observer);
+  },
+  notifyLinkChanged: function (link, index=-1, deleted=false) {
+    this._notifyObservers("onLinkChanged", link, index, deleted);
+  },
+  notifyManyLinksChanged: function () {
+    this._notifyObservers("onManyLinksChanged");
+  },
+  _notifyObservers: function () {
+    let observerMethodName = arguments[0];
+    let args = Array.prototype.slice.call(arguments, 1);
+    args.unshift(this);
+    for (let obs of this._observers) {
+      if (obs[observerMethodName])
+        obs[observerMethodName].apply(NewTabUtils.links, args);
+    }
+  },
+};
+
+function do_check_links(actualLinks, expectedLinks) {
+  do_check_true(Array.isArray(actualLinks));
+  do_check_eq(actualLinks.length, expectedLinks.length);
+  for (let i = 0; i < expectedLinks.length; i++) {
+    let expected = expectedLinks[i];
+    let actual = actualLinks[i];
+    do_check_eq(actual.url, expected.url);
+    do_check_eq(actual.title, expected.title);
+    do_check_eq(actual.frecency, expected.frecency);
+    do_check_eq(actual.lastVisitDate, expected.lastVisitDate);
+  }
+}
+
+function makeLinks(frecRangeStart, frecRangeEnd, step) {
+  let links = [];
+  // Remember, links are ordered by frecency descending.
+  for (let i = frecRangeEnd; i > frecRangeStart; i -= step) {
+    links.push(makeLink(i));
+  }
+  return links;
+}
+
+function makeLink(frecency) {
+  return {
+    url: "http://example" + frecency + ".com/",
+    title: "My frecency is " + frecency,
+    frecency: frecency,
+    lastVisitDate: 0,
+  };
+}
diff --git a/toolkit/modules/tests/xpcshell/test_ObjectUtils.js b/toolkit/modules/tests/xpcshell/test_ObjectUtils.js
new file mode 100644
index 000000000..9aef3e907
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_ObjectUtils.js
@@ -0,0 +1,96 @@
+Components.utils.import("resource://gre/modules/ObjectUtils.jsm");
+
+function run_test() {
+  run_next_test();
+}
+
+add_task(function* test_deepEqual() {
+  let deepEqual = ObjectUtils.deepEqual.bind(ObjectUtils);
+  // CommonJS 7.2
+  Assert.ok(deepEqual(new Date(2000, 3, 14), new Date(2000, 3, 14)), "deepEqual date");
+  Assert.ok(deepEqual(new Date(NaN), new Date(NaN)), "deepEqual invalid dates");
+
+  Assert.ok(!deepEqual(new Date(), new Date(2000, 3, 14)), "deepEqual date");
+
+  // 7.3
+  Assert.ok(deepEqual(/a/, /a/));
+  Assert.ok(deepEqual(/a/g, /a/g));
+  Assert.ok(deepEqual(/a/i, /a/i));
+  Assert.ok(deepEqual(/a/m, /a/m));
+  Assert.ok(deepEqual(/a/igm, /a/igm));
+  Assert.ok(!deepEqual(/ab/, /a/));
+  Assert.ok(!deepEqual(/a/g, /a/));
+  Assert.ok(!deepEqual(/a/i, /a/));
+  Assert.ok(!deepEqual(/a/m, /a/));
+  Assert.ok(!deepEqual(/a/igm, /a/im));
+
+  let re1 = /a/;
+  re1.lastIndex = 3;
+  Assert.ok(!deepEqual(re1, /a/));
+
+  // 7.4
+  Assert.ok(deepEqual(4, "4"), "deepEqual == check");
+  Assert.ok(deepEqual(true, 1), "deepEqual == check");
+  Assert.ok(!deepEqual(4, "5"), "deepEqual == check");
+
+  // 7.5
+  // having the same number of owned properties && the same set of keys
+  Assert.ok(deepEqual({a: 4}, {a: 4}));
+  Assert.ok(deepEqual({a: 4, b: "2"}, {a: 4, b: "2"}));
+  Assert.ok(deepEqual([4], ["4"]));
+  Assert.ok(!deepEqual({a: 4}, {a: 4, b: true}));
+  Assert.ok(deepEqual(["a"], {0: "a"}));
+
+  let a1 = [1, 2, 3];
+  let a2 = [1, 2, 3];
+  a1.a = "test";
+  a1.b = true;
+  a2.b = true;
+  a2.a = "test";
+  Assert.ok(!deepEqual(Object.keys(a1), Object.keys(a2)));
+  Assert.ok(deepEqual(a1, a2));
+
+  let nbRoot = {
+    toString: function() { return this.first + " " + this.last; }
+  };
+
+  function nameBuilder(first, last) {
+    this.first = first;
+    this.last = last;
+    return this;
+  }
+  nameBuilder.prototype = nbRoot;
+
+  function nameBuilder2(first, last) {
+    this.first = first;
+    this.last = last;
+    return this;
+  }
+  nameBuilder2.prototype = nbRoot;
+
+  let nb1 = new nameBuilder("Ryan", "Dahl");
+  let nb2 = new nameBuilder2("Ryan", "Dahl");
+
+  Assert.ok(deepEqual(nb1, nb2));
+
+  nameBuilder2.prototype = Object;
+  nb2 = new nameBuilder2("Ryan", "Dahl");
+  Assert.ok(!deepEqual(nb1, nb2));
+
+  // String literal + object
+  Assert.ok(!deepEqual("a", {}));
+
+  // Make sure deepEqual doesn't loop forever on circular refs
+
+  let b = {};
+  b.b = b;
+
+  let c = {};
+  c.b = c;
+
+  try {
+    Assert.ok(!deepEqual(b, c));
+  } catch (e) {
+    Assert.ok(true, "Didn't recurse infinitely.");
+  }
+});
diff --git a/toolkit/modules/tests/xpcshell/test_ObjectUtils_strict.js b/toolkit/modules/tests/xpcshell/test_ObjectUtils_strict.js
new file mode 100644
index 000000000..44572e600
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_ObjectUtils_strict.js
@@ -0,0 +1,29 @@
+"use strict";
+
+var {ObjectUtils} = Components.utils.import("resource://gre/modules/ObjectUtils.jsm", {});
+var {PromiseTestUtils} = Components.utils.import("resource://testing-common/PromiseTestUtils.jsm", {});
+
+add_task(function* test_strict() {
+  let loose = { a: 1 };
+  let strict = ObjectUtils.strict(loose);
+
+  loose.a; // Should not throw.
+  loose.b || undefined; // Should not throw.
+
+  strict.a; // Should not throw.
+  PromiseTestUtils.expectUncaughtRejection(/No such property: "b"/);
+  Assert.throws(() => strict.b, /No such property: "b"/);
+  "b" in strict; // Should not throw.
+  strict.b = 2;
+  strict.b; // Should not throw.
+
+  PromiseTestUtils.expectUncaughtRejection(/No such property: "c"/);
+  Assert.throws(() => strict.c, /No such property: "c"/);
+  "c" in strict; // Should not throw.
+  loose.c = 3;
+  strict.c; // Should not throw.
+});
+
+function run_test() {
+  run_next_test();
+}
diff --git a/toolkit/modules/tests/xpcshell/test_PermissionsUtils.js b/toolkit/modules/tests/xpcshell/test_PermissionsUtils.js
new file mode 100644
index 000000000..3982ce015
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_PermissionsUtils.js
@@ -0,0 +1,85 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+// Tests that PerrmissionsUtils.jsm works as expected, including:
+// * PermissionsUtils.importfromPrefs()
+//      <ROOT>.[whitelist|blacklist].add preferences are emptied when
+//       converted into permissions on startup.
+
+
+const PREF_ROOT = "testpermissions.";
+const TEST_PERM = "test-permission";
+
+Components.utils.import("resource://gre/modules/Services.jsm");
+Components.utils.import("resource://gre/modules/PermissionsUtils.jsm");
+
+function run_test() {
+  test_importfromPrefs();
+}
+
+
+function test_importfromPrefs() {
+  // Create own preferences to test
+  Services.prefs.setCharPref(PREF_ROOT + "whitelist.add.EMPTY", "");
+  Services.prefs.setCharPref(PREF_ROOT + "whitelist.add.EMPTY2", ",");
+  Services.prefs.setCharPref(PREF_ROOT + "whitelist.add.TEST", "http://whitelist.example.com");
+  Services.prefs.setCharPref(PREF_ROOT + "whitelist.add.TEST2", "https://whitelist2-1.example.com,http://whitelist2-2.example.com:8080,about:home");
+  Services.prefs.setCharPref(PREF_ROOT + "whitelist.add.TEST3", "whitelist3-1.example.com,about:config"); // legacy style - host only
+  Services.prefs.setCharPref(PREF_ROOT + "blacklist.add.EMPTY", "");
+  Services.prefs.setCharPref(PREF_ROOT + "blacklist.add.TEST", "http://blacklist.example.com,");
+  Services.prefs.setCharPref(PREF_ROOT + "blacklist.add.TEST2", ",https://blacklist2-1.example.com,http://blacklist2-2.example.com:8080,about:mozilla");
+  Services.prefs.setCharPref(PREF_ROOT + "blacklist.add.TEST3", "blacklist3-1.example.com,about:preferences"); // legacy style - host only
+
+  // Check they are unknown in the permission manager prior to importing.
+  let whitelisted = ["http://whitelist.example.com",
+                     "https://whitelist2-1.example.com",
+                     "http://whitelist2-2.example.com:8080",
+                     "http://whitelist3-1.example.com",
+                     "https://whitelist3-1.example.com",
+                     "about:config",
+                     "about:home"];
+  let blacklisted = ["http://blacklist.example.com",
+                     "https://blacklist2-1.example.com",
+                     "http://blacklist2-2.example.com:8080",
+                     "http://blacklist3-1.example.com",
+                     "https://blacklist3-1.example.com",
+                     "about:preferences",
+                     "about:mozilla"];
+  let untouched = ["https://whitelist.example.com",
+                   "https://blacklist.example.com",
+                   "http://whitelist2-1.example.com",
+                   "http://blacklist2-1.example.com",
+                   "https://whitelist2-2.example.com:8080",
+                   "https://blacklist2-2.example.com:8080"];
+  let unknown = whitelisted.concat(blacklisted).concat(untouched);
+  for (let url of unknown) {
+    let uri = Services.io.newURI(url, null, null);
+    do_check_eq(Services.perms.testPermission(uri, TEST_PERM), Services.perms.UNKNOWN_ACTION);
+  }
+
+  // Import them
+  PermissionsUtils.importFromPrefs(PREF_ROOT, TEST_PERM);
+
+  // Get list of preferences to check
+  let preferences = Services.prefs.getChildList(PREF_ROOT, {});
+
+  // Check preferences were emptied
+  for (let pref of preferences) {
+    do_check_eq(Services.prefs.getCharPref(pref), "");
+  }
+
+  // Check they were imported into the permissions manager
+  for (let url of whitelisted) {
+    let uri = Services.io.newURI(url, null, null);
+    do_check_eq(Services.perms.testPermission(uri, TEST_PERM), Services.perms.ALLOW_ACTION);
+  }
+  for (let url of blacklisted) {
+    let uri = Services.io.newURI(url, null, null);
+    do_check_eq(Services.perms.testPermission(uri, TEST_PERM), Services.perms.DENY_ACTION);
+  }
+  for (let url of untouched) {
+    let uri = Services.io.newURI(url, null, null);
+    do_check_eq(Services.perms.testPermission(uri, TEST_PERM), Services.perms.UNKNOWN_ACTION);
+  }
+}
diff --git a/toolkit/modules/tests/xpcshell/test_Preferences.js b/toolkit/modules/tests/xpcshell/test_Preferences.js
new file mode 100644
index 000000000..ef430909f
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_Preferences.js
@@ -0,0 +1,378 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+var {classes: Cc, interfaces: Ci, results: Cr, utils: Cu, manager: Cm} = Components;
+
+Cu.import("resource://gre/modules/Preferences.jsm");
+
+function run_test() {
+  run_next_test();
+}
+
+add_test(function test_set_get_pref() {
+  Preferences.set("test_set_get_pref.integer", 1);
+  do_check_eq(Preferences.get("test_set_get_pref.integer"), 1);
+
+  Preferences.set("test_set_get_pref.string", "foo");
+  do_check_eq(Preferences.get("test_set_get_pref.string"), "foo");
+
+  Preferences.set("test_set_get_pref.boolean", true);
+  do_check_eq(Preferences.get("test_set_get_pref.boolean"), true);
+
+  // Clean up.
+  Preferences.resetBranch("test_set_get_pref.");
+
+  run_next_test();
+});
+
+add_test(function test_set_get_branch_pref() {
+  let prefs = new Preferences("test_set_get_branch_pref.");
+
+  prefs.set("something", 1);
+  do_check_eq(prefs.get("something"), 1);
+  do_check_false(Preferences.has("something"));
+
+  // Clean up.
+  prefs.reset("something");
+
+  run_next_test();
+});
+
+add_test(function test_set_get_multiple_prefs() {
+  Preferences.set({ "test_set_get_multiple_prefs.integer":  1,
+                    "test_set_get_multiple_prefs.string":   "foo",
+                    "test_set_get_multiple_prefs.boolean":  true });
+
+  let [i, s, b] = Preferences.get(["test_set_get_multiple_prefs.integer",
+                                   "test_set_get_multiple_prefs.string",
+                                   "test_set_get_multiple_prefs.boolean"]);
+
+  do_check_eq(i, 1);
+  do_check_eq(s, "foo");
+  do_check_eq(b, true);
+
+  // Clean up.
+  Preferences.resetBranch("test_set_get_multiple_prefs.");
+
+  run_next_test();
+});
+
+add_test(function test_get_multiple_prefs_with_default_value() {
+  Preferences.set({ "test_get_multiple_prefs_with_default_value.a":  1,
+                    "test_get_multiple_prefs_with_default_value.b":  2 });
+
+  let [a, b, c] = Preferences.get(["test_get_multiple_prefs_with_default_value.a",
+                                   "test_get_multiple_prefs_with_default_value.b",
+                                   "test_get_multiple_prefs_with_default_value.c"],
+                                  0);
+
+  do_check_eq(a, 1);
+  do_check_eq(b, 2);
+  do_check_eq(c, 0);
+
+  // Clean up.
+  Preferences.resetBranch("test_get_multiple_prefs_with_default_value.");
+
+  run_next_test();
+});
+
+add_test(function test_set_get_unicode_pref() {
+  Preferences.set("test_set_get_unicode_pref", String.fromCharCode(960));
+  do_check_eq(Preferences.get("test_set_get_unicode_pref"), String.fromCharCode(960));
+
+  // Clean up.
+  Preferences.reset("test_set_get_unicode_pref");
+
+  run_next_test();
+});
+
+add_test(function test_set_null_pref() {
+  try {
+    Preferences.set("test_set_null_pref", null);
+    // We expect this to throw, so the test is designed to fail if it doesn't.
+    do_check_true(false);
+  }
+  catch (ex) {}
+
+  run_next_test();
+});
+
+add_test(function test_set_undefined_pref() {
+  try {
+    Preferences.set("test_set_undefined_pref");
+    // We expect this to throw, so the test is designed to fail if it doesn't.
+    do_check_true(false);
+  }
+  catch (ex) {}
+
+  run_next_test();
+});
+
+add_test(function test_set_unsupported_pref() {
+  try {
+    Preferences.set("test_set_unsupported_pref", new Array());
+    // We expect this to throw, so the test is designed to fail if it doesn't.
+    do_check_true(false);
+  }
+  catch (ex) {}
+
+  run_next_test();
+});
+
+// Make sure that we can get a string pref that we didn't set ourselves
+// (i.e. that the way we get a string pref using getComplexValue doesn't
+// hork us getting a string pref that wasn't set using setComplexValue).
+add_test(function test_get_string_pref() {
+  let svc = Cc["@mozilla.org/preferences-service;1"].
+            getService(Ci.nsIPrefService).
+            getBranch("");
+  svc.setCharPref("test_get_string_pref", "a normal string");
+  do_check_eq(Preferences.get("test_get_string_pref"), "a normal string");
+
+  // Clean up.
+  Preferences.reset("test_get_string_pref");
+
+  run_next_test();
+});
+
+add_test(function test_get_localized_string_pref() {
+  let svc = Cc["@mozilla.org/preferences-service;1"].
+            getService(Ci.nsIPrefService).
+            getBranch("");
+  let prefName = "test_get_localized_string_pref";
+  let localizedString = Cc["@mozilla.org/pref-localizedstring;1"]
+    .createInstance(Ci.nsIPrefLocalizedString);
+  localizedString.data = "a localized string";
+  svc.setComplexValue(prefName, Ci.nsIPrefLocalizedString, localizedString);
+  do_check_eq(Preferences.get(prefName, null, Ci.nsIPrefLocalizedString),
+    "a localized string");
+
+  // Clean up.
+  Preferences.reset(prefName);
+
+  run_next_test();
+});
+
+add_test(function test_set_get_number_pref() {
+  Preferences.set("test_set_get_number_pref", 5);
+  do_check_eq(Preferences.get("test_set_get_number_pref"), 5);
+
+  // Non-integer values get converted to integers.
+  Preferences.set("test_set_get_number_pref", 3.14159);
+  do_check_eq(Preferences.get("test_set_get_number_pref"), 3);
+
+  // Values outside the range -(2^31-1) to 2^31-1 overflow.
+  try {
+    Preferences.set("test_set_get_number_pref", Math.pow(2, 31));
+    // We expect this to throw, so the test is designed to fail if it doesn't.
+    do_check_true(false);
+  }
+  catch (ex) {}
+
+  // Clean up.
+  Preferences.reset("test_set_get_number_pref");
+
+  run_next_test();
+});
+
+add_test(function test_reset_pref() {
+  Preferences.set("test_reset_pref", 1);
+  Preferences.reset("test_reset_pref");
+  do_check_eq(Preferences.get("test_reset_pref"), undefined);
+
+  run_next_test();
+});
+
+add_test(function test_reset_pref_branch() {
+  Preferences.set("test_reset_pref_branch.foo", 1);
+  Preferences.set("test_reset_pref_branch.bar", 2);
+  Preferences.resetBranch("test_reset_pref_branch.");
+  do_check_eq(Preferences.get("test_reset_pref_branch.foo"), undefined);
+  do_check_eq(Preferences.get("test_reset_pref_branch.bar"), undefined);
+
+  run_next_test();
+});
+
+// Make sure the module doesn't throw an exception when asked to reset
+// a nonexistent pref.
+add_test(function test_reset_nonexistent_pref() {
+  Preferences.reset("test_reset_nonexistent_pref");
+
+  run_next_test();
+});
+
+// Make sure the module doesn't throw an exception when asked to reset
+// a nonexistent pref branch.
+add_test(function test_reset_nonexistent_pref_branch() {
+  Preferences.resetBranch("test_reset_nonexistent_pref_branch.");
+
+  run_next_test();
+});
+
+add_test(function test_observe_prefs_function() {
+  let observed = false;
+  let observer = function() { observed = !observed };
+
+  Preferences.observe("test_observe_prefs_function", observer);
+  Preferences.set("test_observe_prefs_function", "something");
+  do_check_true(observed);
+
+  Preferences.ignore("test_observe_prefs_function", observer);
+  Preferences.set("test_observe_prefs_function", "something else");
+  do_check_true(observed);
+
+  // Clean up.
+  Preferences.reset("test_observe_prefs_function");
+
+  run_next_test();
+});
+
+add_test(function test_observe_prefs_object() {
+  let observer = {
+    observed: false,
+    observe: function() {
+      this.observed = !this.observed;
+    }
+  };
+
+  Preferences.observe("test_observe_prefs_object", observer.observe, observer);
+  Preferences.set("test_observe_prefs_object", "something");
+  do_check_true(observer.observed);
+
+  Preferences.ignore("test_observe_prefs_object", observer.observe, observer);
+  Preferences.set("test_observe_prefs_object", "something else");
+  do_check_true(observer.observed);
+
+  // Clean up.
+  Preferences.reset("test_observe_prefs_object");
+
+  run_next_test();
+});
+
+add_test(function test_observe_prefs_nsIObserver() {
+  let observer = {
+    observed: false,
+    observe: function(subject, topic, data) {
+      this.observed = !this.observed;
+      do_check_true(subject instanceof Ci.nsIPrefBranch);
+      do_check_eq(topic, "nsPref:changed");
+      do_check_eq(data, "test_observe_prefs_nsIObserver");
+    }
+  };
+
+  Preferences.observe("test_observe_prefs_nsIObserver", observer);
+  Preferences.set("test_observe_prefs_nsIObserver", "something");
+  do_check_true(observer.observed);
+
+  Preferences.ignore("test_observe_prefs_nsIObserver", observer);
+  Preferences.set("test_observe_prefs_nsIObserver", "something else");
+  do_check_true(observer.observed);
+
+  // Clean up.
+  Preferences.reset("test_observe_prefs_nsIObserver");
+
+  run_next_test();
+});
+
+/*
+add_test(function test_observe_exact_pref() {
+  let observed = false;
+  let observer = function() { observed = !observed };
+
+  Preferences.observe("test_observe_exact_pref", observer);
+  Preferences.set("test_observe_exact_pref.sub-pref", "something");
+  do_check_false(observed);
+
+  // Clean up.
+  Preferences.ignore("test_observe_exact_pref", observer);
+  Preferences.reset("test_observe_exact_pref.sub-pref");
+
+  run_next_test();
+});
+*/
+
+add_test(function test_observe_value_of_set_pref() {
+  let observer = function(newVal) { do_check_eq(newVal, "something") };
+
+  Preferences.observe("test_observe_value_of_set_pref", observer);
+  Preferences.set("test_observe_value_of_set_pref", "something");
+
+  // Clean up.
+  Preferences.ignore("test_observe_value_of_set_pref", observer);
+  Preferences.reset("test_observe_value_of_set_pref");
+
+  run_next_test();
+});
+
+add_test(function test_observe_value_of_reset_pref() {
+  let observer = function(newVal) { do_check_true(typeof newVal == "undefined") };
+
+  Preferences.set("test_observe_value_of_reset_pref", "something");
+  Preferences.observe("test_observe_value_of_reset_pref", observer);
+  Preferences.reset("test_observe_value_of_reset_pref");
+
+  // Clean up.
+  Preferences.ignore("test_observe_value_of_reset_pref", observer);
+
+  run_next_test();
+});
+
+add_test(function test_has_pref() {
+  do_check_false(Preferences.has("test_has_pref"));
+  Preferences.set("test_has_pref", "foo");
+  do_check_true(Preferences.has("test_has_pref"));
+
+  Preferences.set("test_has_pref.foo", "foo");
+  Preferences.set("test_has_pref.bar", "bar");
+  let [hasFoo, hasBar, hasBaz] = Preferences.has(["test_has_pref.foo",
+                                                  "test_has_pref.bar",
+                                                  "test_has_pref.baz"]);
+  do_check_true(hasFoo);
+  do_check_true(hasBar);
+  do_check_false(hasBaz);
+
+  // Clean up.
+  Preferences.resetBranch("test_has_pref");
+
+  run_next_test();
+});
+
+add_test(function test_isSet_pref() {
+  // Use a pref that we know has a default value but no user-set value.
+  // This feels dangerous; perhaps we should create some other default prefs
+  // that we can use for testing.
+  do_check_false(Preferences.isSet("toolkit.defaultChromeURI"));
+  Preferences.set("toolkit.defaultChromeURI", "foo");
+  do_check_true(Preferences.isSet("toolkit.defaultChromeURI"));
+
+  // Clean up.
+  Preferences.reset("toolkit.defaultChromeURI");
+
+  run_next_test();
+});
+
+/*
+add_test(function test_lock_prefs() {
+  // Use a pref that we know has a default value.
+  // This feels dangerous; perhaps we should create some other default prefs
+  // that we can use for testing.
+  do_check_false(Preferences.locked("toolkit.defaultChromeURI"));
+  Preferences.lock("toolkit.defaultChromeURI");
+  do_check_true(Preferences.locked("toolkit.defaultChromeURI"));
+  Preferences.unlock("toolkit.defaultChromeURI");
+  do_check_false(Preferences.locked("toolkit.defaultChromeURI"));
+
+  let val = Preferences.get("toolkit.defaultChromeURI");
+  Preferences.set("toolkit.defaultChromeURI", "test_lock_prefs");
+  do_check_eq(Preferences.get("toolkit.defaultChromeURI"), "test_lock_prefs");
+  Preferences.lock("toolkit.defaultChromeURI");
+  do_check_eq(Preferences.get("toolkit.defaultChromeURI"), val);
+  Preferences.unlock("toolkit.defaultChromeURI");
+  do_check_eq(Preferences.get("toolkit.defaultChromeURI"), "test_lock_prefs");
+
+  // Clean up.
+  Preferences.reset("toolkit.defaultChromeURI");
+
+  run_next_test();
+});
+*/
diff --git a/toolkit/modules/tests/xpcshell/test_Promise.js b/toolkit/modules/tests/xpcshell/test_Promise.js
new file mode 100644
index 000000000..6c7220692
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_Promise.js
@@ -0,0 +1,1105 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+"use strict";
+
+Components.utils.import("resource://gre/modules/Promise.jsm");
+Components.utils.import("resource://gre/modules/Services.jsm");
+Components.utils.import("resource://gre/modules/Task.jsm");
+Components.utils.import("resource://testing-common/PromiseTestUtils.jsm");
+
+// Prevent test failures due to the unhandled rejections in this test file.
+PromiseTestUtils.disableUncaughtRejectionObserverForSelfTest();
+
+// Test runner
+
+var run_promise_tests = function run_promise_tests(tests, cb) {
+  let loop = function loop(index) {
+    if (index >= tests.length) {
+      if (cb) {
+        cb.call();
+      }
+      return;
+    }
+    do_print("Launching test " + (index + 1) + "/" + tests.length);
+    let test = tests[index];
+    // Execute from an empty stack
+    let next = function next() {
+      do_print("Test " + (index + 1) + "/" + tests.length + " complete");
+      do_execute_soon(function() {
+        loop(index + 1);
+      });
+    };
+    let result = test();
+    result.then(next, next);
+  };
+  return loop(0);
+};
+
+var make_promise_test = function(test) {
+  return function runtest() {
+    do_print("Test starting: " + test.name);
+    try {
+      let result = test();
+      if (result && "promise" in result) {
+        result = result.promise;
+      }
+      if (!result || !("then" in result)) {
+        let exn;
+        try {
+          do_throw("Test " + test.name + " did not return a promise: " + result);
+        } catch (x) {
+          exn = x;
+        }
+        return Promise.reject(exn);
+      }
+      // The test returns a promise
+      result = result.then(
+        // Test complete
+        function onResolve() {
+          do_print("Test complete: " + test.name);
+        },
+        // The test failed with an unexpected error
+        function onReject(err) {
+          let detail;
+          if (err && typeof err == "object" && "stack" in err) {
+            detail = err.stack;
+          } else {
+            detail = "(no stack)";
+          }
+          do_throw("Test " + test.name + " rejected with the following reason: "
+              + err + detail);
+      });
+      return result;
+    } catch (x) {
+      // The test failed because of an error outside of a promise
+      do_throw("Error in body of test " + test.name + ": " + x + " at " + x.stack);
+      return Promise.reject();
+    }
+  };
+};
+
+// Tests
+
+var tests = [];
+
+// Utility function to observe an failures in a promise
+// This function is useful if the promise itself is
+// not returned.
+var observe_failures = function observe_failures(promise) {
+  promise.catch(function onReject(reason) {
+    test.do_throw("Observed failure in test " + test + ": " + reason);
+  });
+};
+
+// Test that all observers are notified
+tests.push(make_promise_test(
+  function notification(test) {
+    // The size of the test
+    const SIZE = 10;
+    const RESULT = "this is an arbitrary value";
+
+    // Number of observers that yet need to be notified
+    let expected = SIZE;
+
+    // |true| once an observer has been notified
+    let notified = [];
+
+    // The promise observed
+    let source = Promise.defer();
+    let result = Promise.defer();
+
+    let install_observer = function install_observer(i) {
+      observe_failures(source.promise.then(
+        function onSuccess(value) {
+          do_check_true(!notified[i], "Ensuring that observer is notified at most once");
+          notified[i] = true;
+
+          do_check_eq(value, RESULT, "Ensuring that the observed value is correct");
+          if (--expected == 0) {
+            result.resolve();
+          }
+        }));
+    };
+
+    // Install a number of observers before resolving
+    let i;
+    for (i = 0; i < SIZE/2; ++i) {
+      install_observer(i);
+    }
+
+    source.resolve(RESULT);
+
+    // Install remaining observers
+    for (;i < SIZE; ++i) {
+      install_observer(i);
+    }
+
+    return result;
+  }));
+
+// Test that observers get the correct "this" value in strict mode.
+tests.push(
+  make_promise_test(function handlers_this_value(test) {
+    return Promise.resolve().then(
+      function onResolve() {
+        // Since this file is in strict mode, the correct value is "undefined".
+        do_check_eq(this, undefined);
+        throw "reject";
+      }
+    ).then(
+      null,
+      function onReject() {
+        // Since this file is in strict mode, the correct value is "undefined".
+        do_check_eq(this, undefined);
+      }
+    );
+  }));
+
+// Test that observers registered on a pending promise are notified in order.
+tests.push(
+  make_promise_test(function then_returns_before_callbacks(test) {
+    let deferred = Promise.defer();
+    let promise = deferred.promise;
+
+    let order = 0;
+
+    promise.then(
+      function onResolve() {
+        do_check_eq(order, 0);
+        order++;
+      }
+    );
+
+    promise.then(
+      function onResolve() {
+        do_check_eq(order, 1);
+        order++;
+      }
+    );
+
+    let newPromise = promise.then(
+      function onResolve() {
+        do_check_eq(order, 2);
+      }
+    );
+
+    deferred.resolve();
+
+    // This test finishes after the last handler succeeds.
+    return newPromise;
+  }));
+
+// Test that observers registered on a resolved promise are notified in order.
+tests.push(
+  make_promise_test(function then_returns_before_callbacks(test) {
+    let promise = Promise.resolve();
+
+    let order = 0;
+
+    promise.then(
+      function onResolve() {
+        do_check_eq(order, 0);
+        order++;
+      }
+    );
+
+    promise.then(
+      function onResolve() {
+        do_check_eq(order, 1);
+        order++;
+      }
+    );
+
+    // This test finishes after the last handler succeeds.
+    return promise.then(
+      function onResolve() {
+        do_check_eq(order, 2);
+      }
+    );
+  }));
+
+// Test that all observers are notified at most once, even if source
+// is resolved/rejected several times
+tests.push(make_promise_test(
+  function notification_once(test) {
+    // The size of the test
+    const SIZE = 10;
+    const RESULT = "this is an arbitrary value";
+
+    // Number of observers that yet need to be notified
+    let expected = SIZE;
+
+    // |true| once an observer has been notified
+    let notified = [];
+
+    // The promise observed
+    let observed = Promise.defer();
+    let result = Promise.defer();
+
+    let install_observer = function install_observer(i) {
+      observe_failures(observed.promise.then(
+        function onSuccess(value) {
+          do_check_true(!notified[i], "Ensuring that observer is notified at most once");
+          notified[i] = true;
+
+          do_check_eq(value, RESULT, "Ensuring that the observed value is correct");
+          if (--expected == 0) {
+            result.resolve();
+          }
+        }));
+    };
+
+    // Install a number of observers before resolving
+    let i;
+    for (i = 0; i < SIZE/2; ++i) {
+      install_observer(i);
+    }
+
+    observed.resolve(RESULT);
+
+    // Install remaining observers
+    for (;i < SIZE; ++i) {
+      install_observer(i);
+    }
+
+    // Resolve some more
+    for (i = 0; i < 10; ++i) {
+      observed.resolve(RESULT);
+      observed.reject();
+    }
+
+    return result;
+  }));
+
+// Test that throwing an exception from a onResolve listener
+// does not prevent other observers from receiving the notification
+// of success.
+tests.push(
+  make_promise_test(function exceptions_do_not_stop_notifications(test)  {
+    let source = Promise.defer();
+
+    let exception_thrown = false;
+    let exception_content = new Error("Boom!");
+
+    let observer_1 = source.promise.then(
+      function onResolve() {
+        exception_thrown = true;
+        throw exception_content;
+      });
+
+    let observer_2 = source.promise.then(
+      function onResolve() {
+        do_check_true(exception_thrown, "Second observer called after first observer has thrown");
+      }
+    );
+
+    let result = observer_1.then(
+      function onResolve() {
+        do_throw("observer_1 should not have resolved");
+      },
+      function onReject(reason) {
+        do_check_true(reason == exception_content, "Obtained correct rejection");
+      }
+    );
+
+    source.resolve();
+    return result;
+  }
+));
+
+// Test that, once a promise is resolved, further resolve/reject
+// are ignored.
+tests.push(
+  make_promise_test(function subsequent_resolves_are_ignored(test) {
+    let deferred = Promise.defer();
+    deferred.resolve(1);
+    deferred.resolve(2);
+    deferred.reject(3);
+
+    let result = deferred.promise.then(
+      function onResolve(value) {
+        do_check_eq(value, 1, "Resolution chose the first value");
+      },
+      function onReject(reason) {
+        do_throw("Obtained a rejection while the promise was already resolved");
+      }
+    );
+
+    return result;
+  }));
+
+// Test that, once a promise is rejected, further resolve/reject
+// are ignored.
+tests.push(
+  make_promise_test(function subsequent_rejects_are_ignored(test) {
+    let deferred = Promise.defer();
+    deferred.reject(1);
+    deferred.reject(2);
+    deferred.resolve(3);
+
+    let result = deferred.promise.then(
+      function onResolve() {
+        do_throw("Obtained a resolution while the promise was already rejected");
+      },
+      function onReject(reason) {
+        do_check_eq(reason, 1, "Rejection chose the first value");
+      }
+    );
+
+    return result;
+  }));
+
+// Test that returning normally from a rejection recovers from the error
+// and that listeners are informed of a success.
+tests.push(
+  make_promise_test(function recovery(test) {
+    let boom = new Error("Boom!");
+    let deferred = Promise.defer();
+    const RESULT = "An arbitrary value";
+
+    let promise = deferred.promise.then(
+      function onResolve() {
+        do_throw("A rejected promise should not resolve");
+      },
+      function onReject(reason) {
+        do_check_true(reason == boom, "Promise was rejected with the correct error");
+        return RESULT;
+      }
+    );
+
+    promise = promise.then(
+      function onResolve(value) {
+        do_check_eq(value, RESULT, "Promise was recovered with the correct value");
+      }
+    );
+
+    deferred.reject(boom);
+    return promise;
+  }));
+
+// Test that returning a resolved promise from a onReject causes a resolution
+// (recovering from the error) and that returning a rejected promise
+// from a onResolve listener causes a rejection (raising an error).
+tests.push(
+  make_promise_test(function recovery_with_promise(test) {
+    let boom = new Error("Arbitrary error");
+    let deferred = Promise.defer();
+    const RESULT = "An arbitrary value";
+    const boom2 = new Error("Another arbitrary error");
+
+    // return a resolved promise from a onReject listener
+    let promise = deferred.promise.then(
+      function onResolve() {
+        do_throw("A rejected promise should not resolve");
+      },
+      function onReject(reason) {
+        do_check_true(reason == boom, "Promise was rejected with the correct error");
+        return Promise.resolve(RESULT);
+      }
+    );
+
+    // return a rejected promise from a onResolve listener
+    promise = promise.then(
+      function onResolve(value) {
+        do_check_eq(value, RESULT, "Promise was recovered with the correct value");
+        return Promise.reject(boom2);
+      }
+    );
+
+    promise = promise.catch(
+      function onReject(reason) {
+        do_check_eq(reason, boom2, "Rejection was propagated with the correct " +
+                "reason, through a promise");
+      }
+    );
+
+    deferred.reject(boom);
+    return promise;
+  }));
+
+// Test that we can resolve with promises of promises
+tests.push(
+  make_promise_test(function test_propagation(test) {
+    const RESULT = "Yet another arbitrary value";
+    let d1 = Promise.defer();
+    let d2 = Promise.defer();
+    let d3 = Promise.defer();
+
+    d3.resolve(d2.promise);
+    d2.resolve(d1.promise);
+    d1.resolve(RESULT);
+
+    return d3.promise.then(
+      function onSuccess(value) {
+        do_check_eq(value, RESULT, "Resolution with a promise eventually yielded "
+                + " the correct result");
+      }
+    );
+  }));
+
+// Test sequences of |then| and |catch|
+tests.push(
+  make_promise_test(function test_chaining(test) {
+    let error_1 = new Error("Error 1");
+    let error_2 = new Error("Error 2");
+    let result_1 = "First result";
+    let result_2 = "Second result";
+    let result_3 = "Third result";
+
+    let source = Promise.defer();
+
+    let promise = source.promise.then().then();
+
+    source.resolve(result_1);
+
+    // Check that result_1 is correctly propagated
+    promise = promise.then(
+      function onSuccess(result) {
+        do_check_eq(result, result_1, "Result was propagated correctly through " +
+                " several applications of |then|");
+        return result_2;
+      }
+    );
+
+    // Check that returning from the promise produces a resolution
+    promise = promise.catch(
+      function onReject() {
+        do_throw("Incorrect rejection");
+      }
+    );
+
+    // ... and that the check did not alter the value
+    promise = promise.then(
+      function onResolve(value) {
+        do_check_eq(value, result_2, "Result was propagated correctly once again");
+      }
+    );
+
+    // Now the same kind of tests for rejections
+    promise = promise.then(
+      function onResolve() {
+        throw error_1;
+      }
+    );
+
+    promise = promise.then(
+      function onResolve() {
+        do_throw("Incorrect resolution: the exception should have caused a rejection");
+      }
+    );
+
+    promise = promise.catch(
+      function onReject(reason) {
+        do_check_true(reason == error_1, "Reason was propagated correctly");
+        throw error_2;
+      }
+    );
+
+    promise = promise.catch(
+      function onReject(reason) {
+        do_check_true(reason == error_2, "Throwing an error altered the reason " +
+            "as expected");
+        return result_3;
+      }
+    );
+
+    promise = promise.then(
+      function onResolve(result) {
+        do_check_eq(result, result_3, "Error was correctly recovered");
+      }
+    );
+
+    return promise;
+  }));
+
+// Test that resolving with a rejected promise actually rejects
+tests.push(
+  make_promise_test(function resolve_to_rejected(test) {
+    let source = Promise.defer();
+    let error = new Error("Boom");
+
+    let promise = source.promise.then(
+      function onResolve() {
+        do_throw("Incorrect call to onResolve listener");
+      },
+      function onReject(reason) {
+        do_check_eq(reason, error, "Rejection lead to the expected reason");
+      }
+    );
+
+    source.resolve(Promise.reject(error));
+
+    return promise;
+  }));
+
+// Test that Promise.resolve resolves as expected
+tests.push(
+  make_promise_test(function test_resolve(test) {
+    const RESULT = "arbitrary value";
+    let p1 = Promise.resolve(RESULT);
+    let p2 = Promise.resolve(p1);
+    do_check_eq(p1, p2, "Promise.resolve used on a promise just returns the promise");
+
+    return p1.then(
+      function onResolve(result) {
+        do_check_eq(result, RESULT, "Promise.resolve propagated the correct result");
+      }
+    );
+  }));
+
+// Test that Promise.resolve throws when its argument is an async function.
+tests.push(
+  make_promise_test(function test_promise_resolve_throws_with_async_function(test) {
+    Assert.throws(() => Promise.resolve(Task.async(function* () {})),
+                  /Cannot resolve a promise with an async function/);
+    return Promise.resolve();
+  }));
+
+// Test that the code after "then" is always executed before the callbacks
+tests.push(
+  make_promise_test(function then_returns_before_callbacks(test) {
+    let promise = Promise.resolve();
+
+    let thenExecuted = false;
+
+    promise = promise.then(
+      function onResolve() {
+        thenExecuted = true;
+      }
+    );
+
+    do_check_false(thenExecuted);
+
+    return promise;
+  }));
+
+// Test that chaining promises does not generate long stack traces
+tests.push(
+  make_promise_test(function chaining_short_stack(test) {
+    let source = Promise.defer();
+    let promise = source.promise;
+
+    const NUM_ITERATIONS = 100;
+
+    for (let i = 0; i < NUM_ITERATIONS; i++) {
+      promise = promise.then(
+        function onResolve(result) {
+          return result + ".";
+        }
+      );
+    }
+
+    promise = promise.then(
+      function onResolve(result) {
+        // Check that the execution went as expected.
+        let expectedString = new Array(1 + NUM_ITERATIONS).join(".");
+        do_check_true(result == expectedString);
+
+        // Check that we didn't generate one or more stack frames per iteration.
+        let stackFrameCount = 0;
+        let stackFrame = Components.stack;
+        while (stackFrame) {
+          stackFrameCount++;
+          stackFrame = stackFrame.caller;
+        }
+
+        do_check_true(stackFrameCount < NUM_ITERATIONS);
+      }
+    );
+
+    source.resolve("");
+
+    return promise;
+  }));
+
+// Test that the values of the promise return by Promise.all() are kept in the
+// given order even if the given promises are resolved in arbitrary order
+tests.push(
+  make_promise_test(function all_resolve(test) {
+    let d1 = Promise.defer();
+    let d2 = Promise.defer();
+    let d3 = Promise.defer();
+
+    d3.resolve(4);
+    d2.resolve(2);
+    do_execute_soon(() => d1.resolve(1));
+
+    let promises = [d1.promise, d2.promise, 3, d3.promise];
+
+    return Promise.all(promises).then(
+      function onResolve([val1, val2, val3, val4]) {
+        do_check_eq(val1, 1);
+        do_check_eq(val2, 2);
+        do_check_eq(val3, 3);
+        do_check_eq(val4, 4);
+      }
+    );
+  }));
+
+// Test that rejecting one of the promises passed to Promise.all()
+// rejects the promise return by Promise.all()
+tests.push(
+  make_promise_test(function all_reject(test) {
+    let error = new Error("Boom");
+
+    let d1 = Promise.defer();
+    let d2 = Promise.defer();
+    let d3 = Promise.defer();
+
+    d3.resolve(3);
+    d2.resolve(2);
+    do_execute_soon(() => d1.reject(error));
+
+    let promises = [d1.promise, d2.promise, d3.promise];
+
+    return Promise.all(promises).then(
+      function onResolve() {
+        do_throw("Incorrect call to onResolve listener");
+      },
+      function onReject(reason) {
+        do_check_eq(reason, error, "Rejection lead to the expected reason");
+      }
+    );
+  }));
+
+// Test that passing only values (not promises) to Promise.all()
+// forwards them all as resolution values.
+tests.push(
+  make_promise_test(function all_resolve_no_promises(test) {
+    try {
+      Promise.all(null);
+      do_check_true(false, "all() should only accept iterables");
+    } catch (e) {
+      do_check_true(true, "all() fails when first the arg is not an iterable");
+    }
+
+    let p1 = Promise.all([]).then(
+      function onResolve(val) {
+        do_check_true(Array.isArray(val) && val.length == 0);
+      }
+    );
+
+    let p2 = Promise.all([1, 2, 3]).then(
+      function onResolve([val1, val2, val3]) {
+        do_check_eq(val1, 1);
+        do_check_eq(val2, 2);
+        do_check_eq(val3, 3);
+      }
+    );
+
+    return Promise.all([p1, p2]);
+  }));
+
+// Test that Promise.all() handles non-array iterables
+tests.push(
+  make_promise_test(function all_iterable(test) {
+    function* iterable() {
+      yield 1;
+      yield 2;
+      yield 3;
+    }
+
+    return Promise.all(iterable()).then(
+      function onResolve([val1, val2, val3]) {
+        do_check_eq(val1, 1);
+        do_check_eq(val2, 2);
+        do_check_eq(val3, 3);
+      },
+      function onReject() {
+        do_throw("all() unexpectedly rejected");
+      }
+    );
+  }));
+
+// Test that throwing from the iterable passed to Promise.all() rejects the
+// promise returned by Promise.all()
+tests.push(
+  make_promise_test(function all_iterable_throws(test) {
+    function* iterable() {
+      throw 1;
+    }
+
+    return Promise.all(iterable()).then(
+      function onResolve() {
+        do_throw("all() unexpectedly resolved");
+      },
+      function onReject(reason) {
+        do_check_eq(reason, 1, "all() rejects when the iterator throws");
+      }
+    );
+  }));
+
+// Test that Promise.race() resolves with the first available resolution value
+tests.push(
+  make_promise_test(function race_resolve(test) {
+    let p1 = Promise.resolve(1);
+    let p2 = Promise.resolve().then(() => 2);
+
+    return Promise.race([p1, p2]).then(
+      function onResolve(value) {
+        do_check_eq(value, 1);
+      }
+    );
+  }));
+
+// Test that passing only values (not promises) to Promise.race() works
+tests.push(
+  make_promise_test(function race_resolve_no_promises(test) {
+    try {
+      Promise.race(null);
+      do_check_true(false, "race() should only accept iterables");
+    } catch (e) {
+      do_check_true(true, "race() fails when first the arg is not an iterable");
+    }
+
+    return Promise.race([1, 2, 3]).then(
+      function onResolve(value) {
+        do_check_eq(value, 1);
+      }
+    );
+  }));
+
+// Test that Promise.race() never resolves when passed an empty iterable
+tests.push(
+  make_promise_test(function race_resolve_never(test) {
+    return new Promise(resolve => {
+      Promise.race([]).then(
+        function onResolve() {
+          do_throw("race() unexpectedly resolved");
+        },
+        function onReject() {
+          do_throw("race() unexpectedly rejected");
+        }
+      );
+
+      // Approximate "never" so we don't have to solve the halting problem.
+      do_timeout(200, resolve);
+    });
+  }));
+
+// Test that Promise.race() handles non-array iterables.
+tests.push(
+  make_promise_test(function race_iterable(test) {
+    function* iterable() {
+      yield 1;
+      yield 2;
+      yield 3;
+    }
+
+    return Promise.race(iterable()).then(
+      function onResolve(value) {
+        do_check_eq(value, 1);
+      },
+      function onReject() {
+        do_throw("race() unexpectedly rejected");
+      }
+    );
+  }));
+
+// Test that throwing from the iterable passed to Promise.race() rejects the
+// promise returned by Promise.race()
+tests.push(
+  make_promise_test(function race_iterable_throws(test) {
+    function* iterable() {
+      throw 1;
+    }
+
+    return Promise.race(iterable()).then(
+      function onResolve() {
+        do_throw("race() unexpectedly resolved");
+      },
+      function onReject(reason) {
+        do_check_eq(reason, 1, "race() rejects when the iterator throws");
+      }
+    );
+  }));
+
+// Test that rejecting one of the promises passed to Promise.race() rejects the
+// promise returned by Promise.race()
+tests.push(
+  make_promise_test(function race_reject(test) {
+    let p1 = Promise.reject(1);
+    let p2 = Promise.resolve(2);
+    let p3 = Promise.resolve(3);
+
+    return Promise.race([p1, p2, p3]).then(
+      function onResolve() {
+        do_throw("race() unexpectedly resolved");
+      },
+      function onReject(reason) {
+        do_check_eq(reason, 1, "race() rejects when given a rejected promise");
+      }
+    );
+  }));
+
+// Test behavior of the Promise constructor.
+tests.push(
+  make_promise_test(function test_constructor(test) {
+    try {
+      new Promise(null);
+      do_check_true(false, "Constructor should fail when not passed a function");
+    } catch (e) {
+      do_check_true(true, "Constructor fails when not passed a function");
+    }
+
+    let executorRan = false;
+    let promise = new Promise(
+      function executor(resolve, reject) {
+        executorRan = true;
+        do_check_eq(this, undefined);
+        do_check_eq(typeof resolve, "function",
+                    "resolve function should be passed to the executor");
+        do_check_eq(typeof reject, "function",
+                    "reject function should be passed to the executor");
+      }
+    );
+    do_check_instanceof(promise, Promise);
+    do_check_true(executorRan, "Executor should execute synchronously");
+
+    // resolve a promise from the executor
+    let resolvePromise = new Promise(
+      function executor(resolve) {
+        resolve(1);
+      }
+    ).then(
+      function onResolve(value) {
+        do_check_eq(value, 1, "Executor resolved with correct value");
+      },
+      function onReject() {
+        do_throw("Executor unexpectedly rejected");
+      }
+    );
+
+    // reject a promise from the executor
+    let rejectPromise = new Promise(
+      function executor(_, reject) {
+        reject(1);
+      }
+    ).then(
+      function onResolve() {
+        do_throw("Executor unexpectedly resolved");
+      },
+      function onReject(reason) {
+        do_check_eq(reason, 1, "Executor rejected with correct value");
+      }
+    );
+
+    // throw from the executor, causing a rejection
+    let throwPromise = new Promise(
+      function executor() {
+        throw 1;
+      }
+    ).then(
+      function onResolve() {
+        do_throw("Throwing inside an executor should not resolve the promise");
+      },
+      function onReject(reason) {
+        do_check_eq(reason, 1, "Executor rejected with correct value");
+      }
+    );
+
+    return Promise.all([resolvePromise, rejectPromise, throwPromise]);
+  }));
+
+// Test deadlock in Promise.jsm with nested event loops
+// The scenario being tested is:
+// promise_1.then({
+//   do some work that will asynchronously signal done
+//   start an event loop waiting for the done signal
+// }
+// where the async work uses resolution of a second promise to
+// trigger the "done" signal. While this would likely work in a
+// naive implementation, our constant-stack implementation needs
+// a special case to avoid deadlock. Note that this test is
+// sensitive to the implementation-dependent order in which then()
+// clauses for two different promises are executed, so it is
+// possible for other implementations to pass this test and still
+// have similar deadlocks.
+tests.push(
+  make_promise_test(function promise_nested_eventloop_deadlock(test) {
+    // Set up a (long enough to be noticeable) timeout to
+    // exit the nested event loop and throw if the test run is hung
+    let shouldExitNestedEventLoop = false;
+
+    function event_loop() {
+      let thr = Services.tm.mainThread;
+      while (!shouldExitNestedEventLoop) {
+        thr.processNextEvent(true);
+      }
+    }
+
+    // I wish there was a way to cancel xpcshell do_timeout()s
+    do_timeout(2000, () => {
+      if (!shouldExitNestedEventLoop) {
+        shouldExitNestedEventLoop = true;
+        do_throw("Test timed out");
+      }
+    });
+
+    let promise1 = Promise.resolve(1);
+    let promise2 = Promise.resolve(2);
+
+    do_print("Setting wait for first promise");
+    promise1.then(value => {
+      do_print("Starting event loop");
+      event_loop();
+    }, null);
+
+    do_print("Setting wait for second promise");
+    return promise2.catch(error => { return 3; })
+    .then(
+      count => {
+        shouldExitNestedEventLoop = true;
+      });
+  }));
+
+function wait_for_uncaught(aMustAppear, aTimeout = undefined) {
+  let remaining = new Set();
+  for (let k of aMustAppear) {
+    remaining.add(k);
+  }
+  let deferred = Promise.defer();
+  let print = do_print;
+  let execute_soon = do_execute_soon;
+  let observer = function({message, stack}) {
+    let data = message + stack;
+    print("Observing " + message + ", looking for " + aMustAppear.join(", "));
+    for (let expected of remaining) {
+      if (data.indexOf(expected) != -1) {
+        print("I found " + expected);
+        remaining.delete(expected);
+      }
+      if (remaining.size == 0 && observer) {
+        Promise.Debugging.removeUncaughtErrorObserver(observer);
+        observer = null;
+        deferred.resolve();
+      }
+    }
+  };
+  Promise.Debugging.addUncaughtErrorObserver(observer);
+  if (aTimeout) {
+    do_timeout(aTimeout, function timeout() {
+      if (observer) {
+        Promise.Debugging.removeUncaughtErrorObserver(observer);
+        observer = null;
+      }
+      deferred.reject(new Error("Timeout"));
+    });
+  }
+  return deferred.promise;
+}
+
+// Test that uncaught errors are reported as uncaught
+(function() {
+  let make_string_rejection = function make_string_rejection() {
+    let salt = (Math.random() * ( Math.pow(2, 24) - 1 ));
+    let string = "This is an uncaught rejection " + salt;
+    // Our error is not Error-like nor an nsIException, so the stack will
+    // include the closure doing the actual rejection.
+    return {mustFind: ["test_rejection_closure", string], error: string};
+  };
+  let make_num_rejection = function make_num_rejection() {
+    let salt = (Math.random() * ( Math.pow(2, 24) - 1 ));
+    // Our error is not Error-like nor an nsIException, so the stack will
+    // include the closure doing the actual rejection.
+    return {mustFind: ["test_rejection_closure", salt], error: salt};
+  };
+  let make_undefined_rejection = function make_undefined_rejection() {
+    // Our error is not Error-like nor an nsIException, so the stack will
+    // include the closure doing the actual rejection.
+    return {mustFind: ["test_rejection_closure"], error: undefined};
+  };
+  let make_error_rejection = function make_error_rejection() {
+    let salt = (Math.random() * ( Math.pow(2, 24) - 1 ));
+    let error = new Error("This is an uncaught error " + salt);
+    return {
+      mustFind: [error.message, error.fileName, error.lineNumber, error.stack],
+      error: error
+    };
+  };
+  let make_exception_rejection = function make_exception_rejection() {
+    let salt = (Math.random() * ( Math.pow(2, 24) - 1 ));
+    let exn = new Components.Exception("This is an uncaught exception " + salt,
+                                       Components.results.NS_ERROR_NOT_AVAILABLE);
+    return {
+      mustFind: [exn.message, exn.filename, exn.lineNumber, exn.location.toString()],
+      error: exn
+    };
+  };
+  for (let make_rejection of [make_string_rejection,
+    make_num_rejection,
+    make_undefined_rejection,
+    make_error_rejection,
+    make_exception_rejection]) {
+      let {mustFind, error} = make_rejection();
+      let name = make_rejection.name;
+      tests.push(make_promise_test(function test_uncaught_is_reported() {
+        do_print("Testing with rejection " + name);
+        let promise = wait_for_uncaught(mustFind);
+        (function test_rejection_closure() {
+          // For the moment, we cannot be absolutely certain that a value is
+          // garbage-collected, even if it is not referenced anymore, due to
+          // the conservative stack-scanning algorithm.
+          //
+          // To be _almost_ certain that a value will be garbage-collected, we
+          // 1. isolate that value in an anonymous closure;
+          // 2. allocate 100 values instead of 1 (gc-ing a single value from
+          //    these is sufficient for the test);
+          // 3. place everything in a loop, as the JIT typically reuses memory;
+          // 4. call all the GC methods we can.
+          //
+          // Unfortunately, we might still have intermittent failures,
+          // materialized as timeouts.
+          //
+          for (let i = 0; i < 100; ++i) {
+            Promise.reject(error);
+          }
+        })();
+        do_print("Posted all rejections");
+        Components.utils.forceGC();
+        Components.utils.forceCC();
+        Components.utils.forceShrinkingGC();
+        return promise;
+      }));
+  }
+})();
+
+
+// Test that caught errors are not reported as uncaught
+tests.push(
+make_promise_test(function test_caught_is_not_reported() {
+  let salt = (Math.random() * ( Math.pow(2, 24) - 1 ));
+  let promise = wait_for_uncaught([salt], 500);
+  (function() {
+    let uncaught = Promise.reject("This error, on the other hand, is caught " + salt);
+    uncaught.catch(function() { /* ignore rejection */ });
+    uncaught = null;
+  })();
+  // Isolate this in a function to increase likelihood that the gc will
+  // realise that |uncaught| has remained uncaught.
+  Components.utils.forceGC();
+
+  return promise.then(function onSuccess() {
+    throw new Error("This error was caught and should not have been reported");
+  }, function onError() {
+    do_print("The caught error was not reported, all is fine");
+  }
+  );
+}));
+
+// Bug 1033406 - Make sure Promise works even after freezing.
+tests.push(
+  make_promise_test(function test_freezing_promise(test) {
+    var p = new Promise(function executor(resolve) {
+      do_execute_soon(resolve);
+    });
+    Object.freeze(p);
+    return p;
+  })
+);
+
+function run_test()
+{
+  do_test_pending();
+  run_promise_tests(tests, do_test_finished);
+}
diff --git a/toolkit/modules/tests/xpcshell/test_PromiseUtils.js b/toolkit/modules/tests/xpcshell/test_PromiseUtils.js
new file mode 100644
index 000000000..c3ab839e4
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_PromiseUtils.js
@@ -0,0 +1,105 @@
+  /* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+Components.utils.import("resource://gre/modules/PromiseUtils.jsm");
+Components.utils.import("resource://gre/modules/Timer.jsm");
+Components.utils.import("resource://testing-common/PromiseTestUtils.jsm");
+
+// Tests for PromiseUtils.jsm
+function run_test() {
+  run_next_test();
+}
+
+// Tests for PromiseUtils.defer()
+
+/* Tests for checking the resolve method of the Deferred object
+ * returned by PromiseUtils.defer() */
+add_task(function* test_resolve_string() {
+  let def = PromiseUtils.defer();
+  let expected = "The promise is resolved " + Math.random();
+  def.resolve(expected);
+  let result = yield def.promise;
+  Assert.equal(result, expected, "def.resolve() resolves the promise");
+});
+
+/* Test for the case when undefined is passed to the resolve method
+ * of the Deferred object */
+add_task(function* test_resolve_undefined() {
+  let def = PromiseUtils.defer();
+  def.resolve();
+  let result = yield def.promise;
+  Assert.equal(result, undefined, "resolve works with undefined as well");
+});
+
+/* Test when a pending promise is passed to the resolve method
+ * of the Deferred object */
+add_task(function* test_resolve_pending_promise() {
+  let def = PromiseUtils.defer();
+  let expected = 100 + Math.random();
+  let p = new Promise((resolve, reject) => {
+    setTimeout(() => resolve(expected), 100);
+  });
+  def.resolve(p);
+  let result = yield def.promise;
+  Assert.equal(result, expected, "def.promise assumed the state of the passed promise");
+});
+
+/* Test when a resovled promise is passed
+ * to the resolve method of the Deferred object */
+add_task(function* test_resolve_resolved_promise() {
+  let def = PromiseUtils.defer();
+  let expected = "Yeah resolved" + Math.random();
+  let p = new Promise((resolve, reject) => resolve(expected));
+  def.resolve(p);
+  let result = yield def.promise;
+  Assert.equal(result, expected, "Resolved promise is passed to the resolve method");
+});
+
+/* Test for the case when a rejected promise is
+ * passed to the resolve method */
+add_task(function* test_resolve_rejected_promise() {
+  let def = PromiseUtils.defer();
+  let p = new Promise((resolve, reject) => reject(new Error("There its an rejection")));
+  def.resolve(p);
+  yield Assert.rejects(def.promise, /There its an rejection/, "Settled rejection promise passed to the resolve method");
+});
+
+/* Test for the checking the reject method of
+ * the Deferred object returned by PromiseUtils.defer() */
+add_task(function* test_reject_Error() {
+  let def = PromiseUtils.defer();
+  def.reject(new Error("This one rejects"));
+  yield Assert.rejects(def.promise, /This one rejects/, "reject method with Error for rejection");
+});
+
+/* Test for the case when a pending Promise is passed to
+ * the reject method of Deferred object */
+add_task(function* test_reject_pending_promise() {
+  let def = PromiseUtils.defer();
+  let p = new Promise((resolve, reject) => {
+    setTimeout(() => resolve(100), 100);
+  });
+  def.reject(p);
+  yield Assert.rejects(def.promise, Promise, "Rejection with a pending promise uses the passed promise itself as the reason of rejection");
+});
+
+/* Test for the case when a resolved Promise
+ * is passed to the reject method */
+add_task(function* test_reject_resolved_promise() {
+  let def = PromiseUtils.defer();
+  let p = new Promise((resolve, reject) => resolve("This resolved"));
+  def.reject(p);
+  yield Assert.rejects(def.promise, Promise, "Rejection with a resolved promise uses the passed promise itself as the reason of rejection");
+});
+
+/* Test for the case when a rejected Promise is
+ * passed to the reject method */
+add_task(function* test_reject_resolved_promise() {
+  PromiseTestUtils.expectUncaughtRejection(/This one rejects/);
+  let def = PromiseUtils.defer();
+  let p = new Promise((resolve, reject) => reject(new Error("This one rejects")));
+  def.reject(p);
+  yield Assert.rejects(def.promise, Promise, "Rejection with a rejected promise uses the passed promise itself as the reason of rejection");
+});
diff --git a/toolkit/modules/tests/xpcshell/test_Services.js b/toolkit/modules/tests/xpcshell/test_Services.js
new file mode 100644
index 000000000..a50ecca3d
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_Services.js
@@ -0,0 +1,90 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/**
+ * This file tests the Services.jsm module.
+ */
+
+// Globals
+
+var Cc = Components.classes;
+var Ci = Components.interfaces;
+var Cu = Components.utils;
+var Cr = Components.results;
+
+Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+Cu.import("resource://gre/modules/Services.jsm");
+
+function checkService(service, interface) {
+  do_print("Checking that Services." + service + " is an " + interface);
+  do_check_true(service in Services);
+  do_check_true(Services[service] instanceof interface);
+}
+
+// Tests
+
+function run_test()
+{
+  do_get_profile();
+
+  checkService("appShell", Ci.nsIAppShellService);
+  checkService("appinfo", Ci.nsIXULRuntime);
+  checkService("blocklist", Ci.nsIBlocklistService);
+  checkService("cache", Ci.nsICacheService);
+  checkService("cache2", Ci.nsICacheStorageService);
+  checkService("clipboard", Ci.nsIClipboard);
+  checkService("console", Ci.nsIConsoleService);
+  checkService("contentPrefs", Ci.nsIContentPrefService);
+  checkService("cookies", Ci.nsICookieManager2);
+  checkService("dirsvc", Ci.nsIDirectoryService);
+  checkService("dirsvc", Ci.nsIProperties);
+  checkService("DOMRequest", Ci.nsIDOMRequestService);
+  checkService("domStorageManager", Ci.nsIDOMStorageManager);
+  checkService("downloads", Ci.nsIDownloadManager);
+  checkService("droppedLinkHandler", Ci.nsIDroppedLinkHandler);
+  checkService("eTLD", Ci.nsIEffectiveTLDService);
+  checkService("focus", Ci.nsIFocusManager);
+  checkService("io", Ci.nsIIOService);
+  checkService("io", Ci.nsIIOService2);
+  checkService("locale", Ci.nsILocaleService);
+  checkService("logins", Ci.nsILoginManager);
+  checkService("obs", Ci.nsIObserverService);
+  checkService("perms", Ci.nsIPermissionManager);
+  checkService("prefs", Ci.nsIPrefBranch);
+  checkService("prefs", Ci.nsIPrefService);
+  checkService("prompt", Ci.nsIPromptService);
+  checkService("scriptSecurityManager", Ci.nsIScriptSecurityManager);
+  checkService("scriptloader", Ci.mozIJSSubScriptLoader);
+  checkService("startup", Ci.nsIAppStartup);
+  checkService("storage", Ci.mozIStorageService);
+  checkService("strings", Ci.nsIStringBundleService);
+  checkService("sysinfo", Ci.nsIPropertyBag2);
+  checkService("telemetry", Ci.nsITelemetry);
+  checkService("tm", Ci.nsIThreadManager);
+  checkService("uriFixup", Ci.nsIURIFixup);
+  checkService("urlFormatter", Ci.nsIURLFormatter);
+  checkService("vc", Ci.nsIVersionComparator);
+  checkService("wm", Ci.nsIWindowMediator);
+  checkService("ww", Ci.nsIWindowWatcher);
+  if ("nsIBrowserSearchService" in Ci) {
+    checkService("search", Ci.nsIBrowserSearchService);
+  }
+  if ("nsIAndroidBridge" in Ci) {
+    checkService("androidBridge", Ci.nsIAndroidBridge);
+  }
+
+  // In xpcshell tests, the "@mozilla.org/xre/app-info;1" component implements
+  // only the nsIXULRuntime interface, but not nsIXULAppInfo.  To test the
+  // service getter for the latter interface, load mock app-info.
+  let tmp = {};
+  Cu.import("resource://testing-common/AppInfo.jsm", tmp);
+  tmp.updateAppInfo();
+
+  // We need to reload the module to update the lazy getter.
+  Cu.unload("resource://gre/modules/Services.jsm");
+  Cu.import("resource://gre/modules/Services.jsm");
+
+  checkService("appinfo", Ci.nsIXULAppInfo);
+
+  Cu.unload("resource://gre/modules/Services.jsm");
+}
diff --git a/toolkit/modules/tests/xpcshell/test_UpdateUtils_updatechannel.js b/toolkit/modules/tests/xpcshell/test_UpdateUtils_updatechannel.js
new file mode 100644
index 000000000..75d7a1992
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_UpdateUtils_updatechannel.js
@@ -0,0 +1,38 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+var { utils: Cu } = Components;
+
+Cu.import("resource://gre/modules/Preferences.jsm");
+Cu.import("resource://gre/modules/UpdateUtils.jsm");
+
+const PREF_APP_UPDATE_CHANNEL = "app.update.channel";
+const TEST_CHANNEL            = "TestChannel";
+const PREF_PARTNER_A          = "app.partner.test_partner_a";
+const TEST_PARTNER_A          = "TestPartnerA";
+const PREF_PARTNER_B          = "app.partner.test_partner_b";
+const TEST_PARTNER_B          = "TestPartnerB";
+
+add_task(function* test_updatechannel() {
+  let defaultPrefs = new Preferences({ defaultBranch: true });
+  let currentChannel = defaultPrefs.get(PREF_APP_UPDATE_CHANNEL);
+
+  do_check_eq(UpdateUtils.UpdateChannel, currentChannel);
+  do_check_eq(UpdateUtils.getUpdateChannel(true), currentChannel);
+  do_check_eq(UpdateUtils.getUpdateChannel(false), currentChannel);
+
+  defaultPrefs.set(PREF_APP_UPDATE_CHANNEL, TEST_CHANNEL);
+  do_check_eq(UpdateUtils.UpdateChannel, TEST_CHANNEL);
+  do_check_eq(UpdateUtils.getUpdateChannel(true), TEST_CHANNEL);
+  do_check_eq(UpdateUtils.getUpdateChannel(false), TEST_CHANNEL);
+
+  defaultPrefs.set(PREF_PARTNER_A, TEST_PARTNER_A);
+  defaultPrefs.set(PREF_PARTNER_B, TEST_PARTNER_B);
+  do_check_eq(UpdateUtils.UpdateChannel,
+              TEST_CHANNEL + "-cck-" + TEST_PARTNER_A + "-" + TEST_PARTNER_B);
+  do_check_eq(UpdateUtils.getUpdateChannel(true),
+              TEST_CHANNEL + "-cck-" + TEST_PARTNER_A + "-" + TEST_PARTNER_B);
+  do_check_eq(UpdateUtils.getUpdateChannel(false), TEST_CHANNEL);
+});
diff --git a/toolkit/modules/tests/xpcshell/test_UpdateUtils_url.js b/toolkit/modules/tests/xpcshell/test_UpdateUtils_url.js
new file mode 100644
index 000000000..da5d868e3
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_UpdateUtils_url.js
@@ -0,0 +1,292 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+var { classes: Cc, interfaces: Ci, utils: Cu } = Components;
+
+Cu.import("resource://gre/modules/UpdateUtils.jsm");
+Cu.import("resource://gre/modules/Services.jsm");
+Cu.import("resource://gre/modules/AppConstants.jsm");
+Cu.import("resource://testing-common/AppInfo.jsm");
+Cu.import("resource://gre/modules/ctypes.jsm");
+
+const PREF_APP_UPDATE_CHANNEL     = "app.update.channel";
+const PREF_APP_PARTNER_BRANCH     = "app.partner.";
+const PREF_DISTRIBUTION_ID        = "distribution.id";
+const PREF_DISTRIBUTION_VERSION   = "distribution.version";
+
+const URL_PREFIX = "http://localhost/";
+
+const MSG_SHOULD_EQUAL = " should equal the expected value";
+
+updateAppInfo();
+const gAppInfo = getAppInfo();
+const gDefaultPrefBranch = Services.prefs.getDefaultBranch(null);
+
+function setUpdateChannel(aChannel) {
+  gDefaultPrefBranch.setCharPref(PREF_APP_UPDATE_CHANNEL, aChannel);
+}
+
+function getServicePack() {
+  // NOTE: This function is a helper function and not a test.  Thus,
+  // it uses throw() instead of do_throw().  Any tests that use this function
+  // should catch exceptions thrown in this function and deal with them
+  // appropriately (usually by calling do_throw).
+  const BYTE = ctypes.uint8_t;
+  const WORD = ctypes.uint16_t;
+  const DWORD = ctypes.uint32_t;
+  const WCHAR = ctypes.char16_t;
+  const BOOL = ctypes.int;
+
+  // This structure is described at:
+  // http://msdn.microsoft.com/en-us/library/ms724833%28v=vs.85%29.aspx
+  const SZCSDVERSIONLENGTH = 128;
+  const OSVERSIONINFOEXW = new ctypes.StructType('OSVERSIONINFOEXW',
+      [
+      {dwOSVersionInfoSize: DWORD},
+      {dwMajorVersion: DWORD},
+      {dwMinorVersion: DWORD},
+      {dwBuildNumber: DWORD},
+      {dwPlatformId: DWORD},
+      {szCSDVersion: ctypes.ArrayType(WCHAR, SZCSDVERSIONLENGTH)},
+      {wServicePackMajor: WORD},
+      {wServicePackMinor: WORD},
+      {wSuiteMask: WORD},
+      {wProductType: BYTE},
+      {wReserved: BYTE}
+      ]);
+
+  let kernel32 = ctypes.open("kernel32");
+  try {
+    let GetVersionEx = kernel32.declare("GetVersionExW",
+                                        ctypes.default_abi,
+                                        BOOL,
+                                        OSVERSIONINFOEXW.ptr);
+    let winVer = OSVERSIONINFOEXW();
+    winVer.dwOSVersionInfoSize = OSVERSIONINFOEXW.size;
+
+    if (0 === GetVersionEx(winVer.address())) {
+      // Using "throw" instead of "do_throw" (see NOTE above)
+      throw ("Failure in GetVersionEx (returned 0)");
+    }
+
+    return winVer.wServicePackMajor + "." + winVer.wServicePackMinor;
+  } finally {
+    kernel32.close();
+  }
+}
+
+function getProcArchitecture() {
+  // NOTE: This function is a helper function and not a test.  Thus,
+  // it uses throw() instead of do_throw().  Any tests that use this function
+  // should catch exceptions thrown in this function and deal with them
+  // appropriately (usually by calling do_throw).
+  const WORD = ctypes.uint16_t;
+  const DWORD = ctypes.uint32_t;
+
+  // This structure is described at:
+  // http://msdn.microsoft.com/en-us/library/ms724958%28v=vs.85%29.aspx
+  const SYSTEM_INFO = new ctypes.StructType('SYSTEM_INFO',
+      [
+      {wProcessorArchitecture: WORD},
+      {wReserved: WORD},
+      {dwPageSize: DWORD},
+      {lpMinimumApplicationAddress: ctypes.voidptr_t},
+      {lpMaximumApplicationAddress: ctypes.voidptr_t},
+      {dwActiveProcessorMask: DWORD.ptr},
+      {dwNumberOfProcessors: DWORD},
+      {dwProcessorType: DWORD},
+      {dwAllocationGranularity: DWORD},
+      {wProcessorLevel: WORD},
+      {wProcessorRevision: WORD}
+      ]);
+
+  let kernel32 = ctypes.open("kernel32");
+  try {
+    let GetNativeSystemInfo = kernel32.declare("GetNativeSystemInfo",
+                                               ctypes.default_abi,
+                                               ctypes.void_t,
+                                               SYSTEM_INFO.ptr);
+    let sysInfo = SYSTEM_INFO();
+    // Default to unknown
+    sysInfo.wProcessorArchitecture = 0xffff;
+
+    GetNativeSystemInfo(sysInfo.address());
+    switch (sysInfo.wProcessorArchitecture) {
+      case 9:
+        return "x64";
+      case 6:
+        return "IA64";
+      case 0:
+        return "x86";
+      default:
+        // Using "throw" instead of "do_throw" (see NOTE above)
+        throw ("Unknown architecture returned from GetNativeSystemInfo: " + sysInfo.wProcessorArchitecture);
+    }
+  } finally {
+    kernel32.close();
+  }
+}
+
+// Helper function for formatting a url and getting the result we're
+// interested in
+function getResult(url) {
+  url = UpdateUtils.formatUpdateURL(url);
+  return url.substr(URL_PREFIX.length).split("/")[0];
+}
+
+// url constructed with %PRODUCT%
+add_task(function* test_product() {
+  let url = URL_PREFIX + "%PRODUCT%/";
+  Assert.equal(getResult(url), gAppInfo.name,
+               "the url param for %PRODUCT%" + MSG_SHOULD_EQUAL);
+});
+
+// url constructed with %VERSION%
+add_task(function* test_version() {
+  let url = URL_PREFIX + "%VERSION%/";
+  Assert.equal(getResult(url), gAppInfo.version,
+               "the url param for %VERSION%" + MSG_SHOULD_EQUAL);
+});
+
+// url constructed with %BUILD_ID%
+add_task(function* test_build_id() {
+  let url = URL_PREFIX + "%BUILD_ID%/";
+  Assert.equal(getResult(url), gAppInfo.appBuildID,
+               "the url param for %BUILD_ID%" + MSG_SHOULD_EQUAL);
+});
+
+// url constructed with %BUILD_TARGET%
+// XXX TODO - it might be nice if we tested the actual ABI
+add_task(function* test_build_target() {
+  let url = URL_PREFIX + "%BUILD_TARGET%/";
+
+  let abi;
+  try {
+    abi = gAppInfo.XPCOMABI;
+  } catch (e) {
+    do_throw("nsIXULAppInfo:XPCOMABI not defined\n");
+  }
+
+  if (AppConstants.platform == "macosx") {
+    // Mac universal build should report a different ABI than either macppc
+    // or mactel. This is necessary since nsUpdateService.js will set the ABI to
+    // Universal-gcc3 for Mac universal builds.
+    let macutils = Cc["@mozilla.org/xpcom/mac-utils;1"].
+                   getService(Ci.nsIMacUtils);
+
+    if (macutils.isUniversalBinary) {
+      abi += "-u-" + macutils.architecturesInBinary;
+    }
+  } else if (AppConstants.platform == "win") {
+    // Windows build should report the CPU architecture that it's running on.
+    abi += "-" + getProcArchitecture();
+  }
+
+  Assert.equal(getResult(url), gAppInfo.OS + "_" + abi,
+               "the url param for %BUILD_TARGET%" + MSG_SHOULD_EQUAL);
+});
+
+// url constructed with %LOCALE%
+// Bug 488936 added the update.locale file that stores the update locale
+add_task(function* test_locale() {
+  // The code that gets the locale accesses the profile which is only available
+  // after calling do_get_profile in xpcshell tests. This prevents an error from
+  // being logged.
+  do_get_profile();
+
+  let url = URL_PREFIX + "%LOCALE%/";
+  Assert.equal(getResult(url), AppConstants.INSTALL_LOCALE,
+               "the url param for %LOCALE%" + MSG_SHOULD_EQUAL);
+});
+
+// url constructed with %CHANNEL%
+add_task(function* test_channel() {
+  let url = URL_PREFIX + "%CHANNEL%/";
+  setUpdateChannel("test_channel");
+  Assert.equal(getResult(url), "test_channel",
+               "the url param for %CHANNEL%" + MSG_SHOULD_EQUAL);
+});
+
+// url constructed with %CHANNEL% with distribution partners
+add_task(function* test_channel_distribution() {
+  let url = URL_PREFIX + "%CHANNEL%/";
+  gDefaultPrefBranch.setCharPref(PREF_APP_PARTNER_BRANCH + "test_partner1",
+                                 "test_partner1");
+  gDefaultPrefBranch.setCharPref(PREF_APP_PARTNER_BRANCH + "test_partner2",
+                                 "test_partner2");
+  Assert.equal(getResult(url),
+               "test_channel-cck-test_partner1-test_partner2",
+               "the url param for %CHANNEL%" + MSG_SHOULD_EQUAL);
+});
+
+// url constructed with %PLATFORM_VERSION%
+add_task(function* test_platform_version() {
+  let url = URL_PREFIX + "%PLATFORM_VERSION%/";
+  Assert.equal(getResult(url), gAppInfo.platformVersion,
+               "the url param for %PLATFORM_VERSION%" + MSG_SHOULD_EQUAL);
+});
+
+// url constructed with %OS_VERSION%
+add_task(function* test_os_version() {
+  let url = URL_PREFIX + "%OS_VERSION%/";
+  let osVersion;
+  let sysInfo = Cc["@mozilla.org/system-info;1"].getService(Ci.nsIPropertyBag2);
+  osVersion = sysInfo.getProperty("name") + " " + sysInfo.getProperty("version");
+
+  if (AppConstants.platform == "win") {
+    try {
+      let servicePack = getServicePack();
+      osVersion += "." + servicePack;
+    } catch (e) {
+      do_throw("Failure obtaining service pack: " + e);
+    }
+
+    if ("5.0" === sysInfo.getProperty("version")) { // Win2K
+      osVersion += " (unknown)";
+    } else {
+      try {
+        osVersion += " (" + getProcArchitecture() + ")";
+      } catch (e) {
+        do_throw("Failed to obtain processor architecture: " + e);
+      }
+    }
+  }
+
+  if (osVersion) {
+    try {
+      osVersion += " (" + sysInfo.getProperty("secondaryLibrary") + ")";
+    } catch (e) {
+      // Not all platforms have a secondary widget library, so an error is
+      // nothing to worry about.
+    }
+    osVersion = encodeURIComponent(osVersion);
+  }
+
+  Assert.equal(getResult(url), osVersion,
+               "the url param for %OS_VERSION%" + MSG_SHOULD_EQUAL);
+});
+
+// url constructed with %DISTRIBUTION%
+add_task(function* test_distribution() {
+  let url = URL_PREFIX + "%DISTRIBUTION%/";
+  gDefaultPrefBranch.setCharPref(PREF_DISTRIBUTION_ID, "test_distro");
+  Assert.equal(getResult(url), "test_distro",
+               "the url param for %DISTRIBUTION%" + MSG_SHOULD_EQUAL);
+});
+
+// url constructed with %DISTRIBUTION_VERSION%
+add_task(function* test_distribution_version() {
+  let url = URL_PREFIX + "%DISTRIBUTION_VERSION%/";
+  gDefaultPrefBranch.setCharPref(PREF_DISTRIBUTION_VERSION, "test_distro_version");
+  Assert.equal(getResult(url), "test_distro_version",
+               "the url param for %DISTRIBUTION_VERSION%" + MSG_SHOULD_EQUAL);
+});
+
+add_task(function* test_custom() {
+  Services.prefs.setCharPref("app.update.custom", "custom");
+  let url = URL_PREFIX + "%CUSTOM%/";
+  Assert.equal(getResult(url), "custom",
+               "the url query string for %CUSTOM%" + MSG_SHOULD_EQUAL);
+});
diff --git a/toolkit/modules/tests/xpcshell/test_ZipUtils.js b/toolkit/modules/tests/xpcshell/test_ZipUtils.js
new file mode 100644
index 000000000..71c6884d4
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_ZipUtils.js
@@ -0,0 +1,79 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const ARCHIVE = "zips/zen.zip";
+const SUBDIR = "zen";
+const SYMLINK = "beyond_link";
+const ENTRIES = ["beyond.txt", SYMLINK, "waterwood.txt"];
+
+Components.utils.import("resource://gre/modules/ZipUtils.jsm");
+Components.utils.import("resource://gre/modules/FileUtils.jsm");
+Components.utils.import("resource://gre/modules/Services.jsm");
+
+const archive = do_get_file(ARCHIVE, false);
+const dir = do_get_profile().clone();
+dir.append("test_ZipUtils");
+
+function run_test() {
+  run_next_test();
+}
+
+function ensureExtracted(target) {
+  target.append(SUBDIR);
+  do_check_true(target.exists());
+
+  for (let i = 0; i < ENTRIES.length; i++) {
+    let entry = target.clone();
+    entry.append(ENTRIES[i]);
+    do_print("ENTRY " + entry.path);
+    do_check_true(entry.exists());
+  }
+}
+
+function ensureHasSymlink(target) {
+  // Just bail out if running on Windows, since symlinks do not exists there.
+  if (Services.appinfo.OS === "WINNT") {
+    return;
+  }
+
+  let entry = target.clone();
+  entry.append(SYMLINK);
+
+  do_print("ENTRY " + entry.path);
+  do_check_true(entry.exists());
+  do_check_true(entry.isSymlink());
+}
+
+add_task(function test_extractFiles() {
+  let target = dir.clone();
+  target.append("test_extractFiles");
+
+  try {
+    ZipUtils.extractFiles(archive, target);
+  } catch (e) {
+    do_throw("Failed to extract synchronously!");
+  }
+
+  ensureExtracted(target);
+  ensureHasSymlink(target);
+});
+
+add_task(function* test_extractFilesAsync() {
+  let target = dir.clone();
+  target.append("test_extractFilesAsync");
+  target.create(Components.interfaces.nsIFile.DIRECTORY_TYPE,
+    FileUtils.PERMS_DIRECTORY);
+
+  yield ZipUtils.extractFilesAsync(archive, target).then(
+    function success() {
+      do_print("SUCCESS");
+      ensureExtracted(target);
+    },
+    function failure() {
+      do_print("FAILURE");
+      do_throw("Failed to extract asynchronously!");
+    }
+  );
+});
diff --git a/toolkit/modules/tests/xpcshell/test_client_id.js b/toolkit/modules/tests/xpcshell/test_client_id.js
new file mode 100644
index 000000000..10ef2a3ea
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_client_id.js
@@ -0,0 +1,95 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+var {classes: Cc, interfaces: Ci, utils: Cu} = Components;
+
+Cu.import("resource://gre/modules/ClientID.jsm");
+Cu.import("resource://gre/modules/Task.jsm");
+Cu.import("resource://services-common/utils.js");
+Cu.import("resource://gre/modules/osfile.jsm");
+Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+Cu.import("resource://gre/modules/Preferences.jsm");
+
+function run_test() {
+  do_get_profile();
+  run_next_test();
+}
+
+add_task(function* () {
+  const drsPath = OS.Path.join(OS.Constants.Path.profileDir, "datareporting", "state.json");
+  const fhrDir  = OS.Path.join(OS.Constants.Path.profileDir, "healthreport");
+  const fhrPath = OS.Path.join(fhrDir, "state.json");
+  const uuidRegex = /^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i;
+  const invalidIDs = [-1, 0.5, "INVALID-UUID", true, "", "3d1e1560-682a-4043-8cf2-aaaaaaaaaaaZ"];
+  const PREF_CACHED_CLIENTID = "toolkit.telemetry.cachedClientID";
+
+  yield OS.File.makeDir(fhrDir);
+
+  // Check that we are importing the FHR client ID.
+  let clientID = CommonUtils.generateUUID();
+  yield CommonUtils.writeJSON({clientID: clientID}, fhrPath);
+  Assert.equal(clientID, yield ClientID.getClientID());
+
+  // We should persist the ID in DRS now and not pick up a differing ID from FHR.
+  yield ClientID._reset();
+  yield CommonUtils.writeJSON({clientID: CommonUtils.generateUUID()}, fhrPath);
+  Assert.equal(clientID, yield ClientID.getClientID());
+
+  // We should be guarded against broken FHR data.
+  for (let invalidID of invalidIDs) {
+    yield ClientID._reset();
+    yield OS.File.remove(drsPath);
+    yield CommonUtils.writeJSON({clientID: invalidID}, fhrPath);
+    clientID = yield ClientID.getClientID();
+    Assert.equal(typeof(clientID), 'string');
+    Assert.ok(uuidRegex.test(clientID));
+  }
+
+  // We should be guarded against invalid FHR json.
+  yield ClientID._reset();
+  yield OS.File.remove(drsPath);
+  yield OS.File.writeAtomic(fhrPath, "abcd", {encoding: "utf-8", tmpPath: fhrPath + ".tmp"});
+  clientID = yield ClientID.getClientID();
+  Assert.equal(typeof(clientID), 'string');
+  Assert.ok(uuidRegex.test(clientID));
+
+  // We should be guarded against broken DRS data too and fall back to loading
+  // the FHR ID.
+  for (let invalidID of invalidIDs) {
+    yield ClientID._reset();
+    clientID = CommonUtils.generateUUID();
+    yield CommonUtils.writeJSON({clientID: clientID}, fhrPath);
+    yield CommonUtils.writeJSON({clientID: invalidID}, drsPath);
+    Assert.equal(clientID, yield ClientID.getClientID());
+  }
+
+  // We should be guarded against invalid DRS json too.
+  yield ClientID._reset();
+  yield OS.File.remove(fhrPath);
+  yield OS.File.writeAtomic(drsPath, "abcd", {encoding: "utf-8", tmpPath: drsPath + ".tmp"});
+  clientID = yield ClientID.getClientID();
+  Assert.equal(typeof(clientID), 'string');
+  Assert.ok(uuidRegex.test(clientID));
+
+  // If both the FHR and DSR data are broken, we should end up with a new client ID.
+  for (let invalidID of invalidIDs) {
+    yield ClientID._reset();
+    yield CommonUtils.writeJSON({clientID: invalidID}, fhrPath);
+    yield CommonUtils.writeJSON({clientID: invalidID}, drsPath);
+    clientID = yield ClientID.getClientID();
+    Assert.equal(typeof(clientID), 'string');
+    Assert.ok(uuidRegex.test(clientID));
+  }
+
+  // Assure that cached IDs are being checked for validity.
+  for (let invalidID of invalidIDs) {
+    yield ClientID._reset();
+    Preferences.set(PREF_CACHED_CLIENTID, invalidID);
+    let cachedID = ClientID.getCachedClientID();
+    Assert.strictEqual(cachedID, null, "ClientID should ignore invalid cached IDs");
+    let prefID = Preferences.get(PREF_CACHED_CLIENTID, null);
+    Assert.strictEqual(prefID, null, "ClientID should reset invalid cached IDs");
+  }
+});
diff --git a/toolkit/modules/tests/xpcshell/test_jsesc.js b/toolkit/modules/tests/xpcshell/test_jsesc.js
new file mode 100644
index 000000000..0c6cbba69
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_jsesc.js
@@ -0,0 +1,9 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+Components.utils.import("resource://gre/modules/third_party/jsesc/jsesc.js");
+
+function run_test() {
+  do_check_eq(jsesc("teééést", {lowercaseHex: true}), "te\\xe9\\xe9\\xe9st");
+  do_check_eq(jsesc("teééést", {lowercaseHex: false}), "te\\xE9\\xE9\\xE9st");
+}
diff --git a/toolkit/modules/tests/xpcshell/test_propertyListsUtils.js b/toolkit/modules/tests/xpcshell/test_propertyListsUtils.js
new file mode 100644
index 000000000..9ccf50b73
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_propertyListsUtils.js
@@ -0,0 +1,106 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+Components.utils.import("resource://gre/modules/PropertyListUtils.jsm");
+
+function checkValue(aPropertyListObject, aType, aValue) {
+  do_check_eq(PropertyListUtils.getObjectType(aPropertyListObject), aType);
+  if (aValue !== undefined) {
+    // Perform strict equality checks until Bug 714467 is fixed.
+    let strictEqualityCheck = function(a, b) {
+      do_check_eq(typeof(a), typeof(b));
+      do_check_eq(a, b);
+    };
+
+    if (typeof(aPropertyListObject) == "object")
+      strictEqualityCheck(aPropertyListObject.valueOf(), aValue.valueOf());
+    else
+      strictEqualityCheck(aPropertyListObject, aValue);
+  }
+}
+
+function checkLazyGetterValue(aObject, aPropertyName, aType, aValue) {
+  let descriptor = Object.getOwnPropertyDescriptor(aObject, aPropertyName);
+  do_check_eq(typeof(descriptor.get), "function");
+  do_check_eq(typeof(descriptor.value), "undefined");
+  checkValue(aObject[aPropertyName], aType, aValue);
+  descriptor = Object.getOwnPropertyDescriptor(aObject, aPropertyName);
+  do_check_eq(typeof(descriptor.get), "undefined");
+  do_check_neq(typeof(descriptor.value), "undefined");
+}
+
+function checkMainPropertyList(aPropertyListRoot) {
+  const PRIMITIVE = PropertyListUtils.TYPE_PRIMITIVE;
+
+  checkValue(aPropertyListRoot, PropertyListUtils.TYPE_DICTIONARY);
+
+  // Check .has()
+  Assert.ok(aPropertyListRoot.has("Boolean"));
+  Assert.ok(!aPropertyListRoot.has("Nonexistent"));
+
+  checkValue(aPropertyListRoot.get("Boolean"), PRIMITIVE, false);
+
+  let array = aPropertyListRoot.get("Array");
+  checkValue(array, PropertyListUtils.TYPE_ARRAY);
+  do_check_eq(array.length, 8);
+
+  // Test both long and short values, since binary property lists store
+  // long values a little bit differently (see readDataLengthAndOffset).
+
+  // Short ASCII string
+  checkLazyGetterValue(array, 0, PRIMITIVE, "abc");
+  // Long ASCII string
+  checkLazyGetterValue(array, 1, PRIMITIVE, new Array(1001).join("a"));
+  // Short unicode string
+  checkLazyGetterValue(array, 2, PRIMITIVE, "\u05D0\u05D0\u05D0");
+  // Long unicode string
+  checkLazyGetterValue(array, 3, PRIMITIVE, new Array(1001).join("\u05D0"));
+  // Unicode surrogate pair
+  checkLazyGetterValue(array, 4, PRIMITIVE,
+                       "\uD800\uDC00\uD800\uDC00\uD800\uDC00");
+
+  // Date
+  checkLazyGetterValue(array, 5, PropertyListUtils.TYPE_DATE,
+                       new Date("2011-12-31T11:15:23Z"));
+
+  // Data
+  checkLazyGetterValue(array, 6, PropertyListUtils.TYPE_UINT8_ARRAY);
+  let dataAsString = Array.from(array[6]).map(b => String.fromCharCode(b)).join("");
+  do_check_eq(dataAsString, "2011-12-31T11:15:33Z");
+
+  // Dict
+  let dict = array[7];
+  checkValue(dict, PropertyListUtils.TYPE_DICTIONARY);
+  checkValue(dict.get("Negative Number"), PRIMITIVE, -400);
+  checkValue(dict.get("Real Number"), PRIMITIVE, 2.71828183);
+  checkValue(dict.get("Big Int"),
+             PropertyListUtils.TYPE_INT64,
+             "9007199254740993");
+  checkValue(dict.get("Negative Big Int"),
+             PropertyListUtils.TYPE_INT64,
+             "-9007199254740993");
+}
+
+function readPropertyList(aFile, aCallback) {
+  PropertyListUtils.read(aFile, function(aPropertyListRoot) {
+    // Null root indicates failure to read property list.
+    // Note: It is important not to run do_check_n/eq directly on Dict and array
+    // objects, because it cases their toString to get invoked, doing away with
+    // all the lazy getter we'd like to test later.
+    do_check_true(aPropertyListRoot !== null);
+    aCallback(aPropertyListRoot);
+    run_next_test();
+  });
+}
+
+function run_test() {
+  add_test(readPropertyList.bind(this,
+    do_get_file("propertyLists/bug710259_propertyListBinary.plist", false),
+    checkMainPropertyList));
+  add_test(readPropertyList.bind(this,
+    do_get_file("propertyLists/bug710259_propertyListXML.plist", false),
+    checkMainPropertyList));
+  run_next_test();
+}
diff --git a/toolkit/modules/tests/xpcshell/test_readCertPrefs.js b/toolkit/modules/tests/xpcshell/test_readCertPrefs.js
new file mode 100644
index 000000000..837a9912a
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_readCertPrefs.js
@@ -0,0 +1,97 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+Components.utils.import("resource://gre/modules/Services.jsm");
+Components.utils.import("resource://gre/modules/CertUtils.jsm");
+
+const PREF_PREFIX = "certutils.certs.";
+
+function run_test() {
+  run_next_test();
+}
+
+function resetPrefs() {
+  var prefs = Services.prefs.getChildList(PREF_PREFIX);
+  prefs.forEach(Services.prefs.clearUserPref);
+}
+
+function attributes_match(aCert, aExpected) {
+  if (Object.keys(aCert).length != Object.keys(aExpected).length)
+    return false;
+
+  for (var attribute in aCert) {
+    if (!(attribute in aExpected))
+      return false;
+    if (aCert[attribute] != aExpected[attribute])
+      return false;
+  }
+
+  return true;
+}
+
+function test_results(aCerts, aExpected) {
+  do_check_eq(aCerts.length, aExpected.length);
+
+  for (var i = 0; i < aCerts.length; i++) {
+    if (!attributes_match(aCerts[i], aExpected[i])) {
+      dump("Attributes for certificate " + (i + 1) + " did not match expected attributes\n");
+      dump("Saw: " + aCerts[i].toSource() + "\n");
+      dump("Expected: " + aExpected[i].toSource() + "\n");
+      do_check_true(false);
+    }
+  }
+}
+
+add_test(function test_singleCert() {
+  Services.prefs.setCharPref(PREF_PREFIX + "1.attribute1", "foo");
+  Services.prefs.setCharPref(PREF_PREFIX + "1.attribute2", "bar");
+
+  var certs = readCertPrefs(PREF_PREFIX);
+  test_results(certs, [{
+    attribute1: "foo",
+    attribute2: "bar"
+  }]);
+
+  resetPrefs();
+  run_next_test();
+});
+
+add_test(function test_multipleCert() {
+  Services.prefs.setCharPref(PREF_PREFIX + "1.md5Fingerprint", "cf84a9a2a804e021f27cb5128fe151f4");
+  Services.prefs.setCharPref(PREF_PREFIX + "1.nickname", "1st cert");
+  Services.prefs.setCharPref(PREF_PREFIX + "2.md5Fingerprint", "9441051b7eb50e5ca2226095af710c1a");
+  Services.prefs.setCharPref(PREF_PREFIX + "2.nickname", "2nd cert");
+
+  var certs = readCertPrefs(PREF_PREFIX);
+  test_results(certs, [{
+    md5Fingerprint: "cf84a9a2a804e021f27cb5128fe151f4",
+    nickname: "1st cert"
+  }, {
+    md5Fingerprint: "9441051b7eb50e5ca2226095af710c1a",
+    nickname: "2nd cert"
+  }]);
+
+  resetPrefs();
+  run_next_test();
+});
+
+add_test(function test_skippedCert() {
+  Services.prefs.setCharPref(PREF_PREFIX + "1.issuerName", "Mozilla");
+  Services.prefs.setCharPref(PREF_PREFIX + "1.nickname", "1st cert");
+  Services.prefs.setCharPref(PREF_PREFIX + "2.issuerName", "Top CA");
+  Services.prefs.setCharPref(PREF_PREFIX + "2.nickname", "2nd cert");
+  Services.prefs.setCharPref(PREF_PREFIX + "4.issuerName", "Unknown CA");
+  Services.prefs.setCharPref(PREF_PREFIX + "4.nickname", "Ignored cert");
+
+  var certs = readCertPrefs(PREF_PREFIX);
+  test_results(certs, [{
+    issuerName: "Mozilla",
+    nickname: "1st cert"
+  }, {
+    issuerName: "Top CA",
+    nickname: "2nd cert"
+  }]);
+
+  resetPrefs();
+  run_next_test();
+});
diff --git a/toolkit/modules/tests/xpcshell/test_servicerequest_xhr.js b/toolkit/modules/tests/xpcshell/test_servicerequest_xhr.js
new file mode 100644
index 000000000..b3c8a443e
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_servicerequest_xhr.js
@@ -0,0 +1,25 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+var {classes: Cc, interfaces: Ci, utils: Cu} = Components;
+
+Cu.import("resource://gre/modules/ServiceRequest.jsm");
+
+add_task(function* test_tls_conservative() {
+  const request = new ServiceRequest();
+  request.open("GET", "http://example.com", false);
+
+  const sr_channel = request.channel.QueryInterface(Ci.nsIHttpChannelInternal);
+  ok(("beConservative" in sr_channel), "TLS setting is present in SR channel");
+  ok(sr_channel.beConservative, "TLS setting in request channel is set to conservative for SR");
+
+  const xhr = new XMLHttpRequest();
+  xhr.open("GET", "http://example.com", false);
+
+  const xhr_channel = xhr.channel.QueryInterface(Ci.nsIHttpChannelInternal);
+  ok(("beConservative" in xhr_channel), "TLS setting is present in XHR channel");
+  ok(!xhr_channel.beConservative, "TLS setting in request channel is not set to conservative for XHR");
+
+});
diff --git a/toolkit/modules/tests/xpcshell/test_session_recorder.js b/toolkit/modules/tests/xpcshell/test_session_recorder.js
new file mode 100644
index 000000000..dd9159c6e
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_session_recorder.js
@@ -0,0 +1,306 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+var {utils: Cu} = Components;
+
+Cu.import("resource://gre/modules/Promise.jsm");
+Cu.import("resource://gre/modules/SessionRecorder.jsm");
+Cu.import("resource://gre/modules/Services.jsm");
+Cu.import("resource://services-common/utils.js");
+
+
+function run_test() {
+  run_next_test();
+}
+
+function monkeypatchStartupInfo(recorder, start=new Date(), offset=500) {
+  Object.defineProperty(recorder, "_getStartupInfo", {
+    value: function _getStartupInfo() {
+      return {
+        process: start,
+        main: new Date(start.getTime() + offset),
+        firstPaint: new Date(start.getTime() + 2 * offset),
+        sessionRestored: new Date(start.getTime() + 3 * offset),
+      };
+    }
+  });
+}
+
+function sleep(wait) {
+  let deferred = Promise.defer();
+
+  let timer = CommonUtils.namedTimer(function onTimer() {
+    deferred.resolve();
+  }, wait, deferred.promise, "_sleepTimer");
+
+  return deferred.promise;
+}
+
+function getRecorder(name, start, offset) {
+  let recorder = new SessionRecorder("testing." + name + ".");
+  monkeypatchStartupInfo(recorder, start, offset);
+
+  return recorder;
+}
+
+add_test(function test_basic() {
+  let recorder = getRecorder("basic");
+  recorder.onStartup();
+  recorder.onShutdown();
+
+  run_next_test();
+});
+
+add_task(function* test_current_properties() {
+  let now = new Date();
+  let recorder = getRecorder("current_properties", now);
+  yield sleep(25);
+  recorder.onStartup();
+
+  do_check_eq(recorder.startDate.getTime(), now.getTime());
+  do_check_eq(recorder.activeTicks, 0);
+  do_check_true(recorder.fineTotalTime > 0);
+  do_check_eq(recorder.main, 500);
+  do_check_eq(recorder.firstPaint, 1000);
+  do_check_eq(recorder.sessionRestored, 1500);
+
+  recorder.incrementActiveTicks();
+  do_check_eq(recorder.activeTicks, 1);
+
+  recorder._startDate = new Date(Date.now() - 1000);
+  recorder.updateTotalTime();
+  do_check_eq(recorder.totalTime, 1);
+
+  recorder.onShutdown();
+});
+
+// If startup info isn't present yet, we should install a timer and get
+// it eventually.
+add_task(function* test_current_availability() {
+  let recorder = new SessionRecorder("testing.current_availability.");
+  let now = new Date();
+
+  Object.defineProperty(recorder, "_getStartupInfo", {
+    value: function _getStartupInfo() {
+      return {
+        process: now,
+        main: new Date(now.getTime() + 500),
+        firstPaint: new Date(now.getTime() + 1000),
+      };
+    },
+    writable: true,
+  });
+
+  Object.defineProperty(recorder, "STARTUP_RETRY_INTERVAL_MS", {
+    value: 100,
+  });
+
+  let oldRecord = recorder.recordStartupFields;
+  let recordCount = 0;
+
+  Object.defineProperty(recorder, "recordStartupFields", {
+    value: function () {
+      recordCount++;
+      return oldRecord.call(recorder);
+    }
+  });
+
+  do_check_null(recorder._timer);
+  recorder.onStartup();
+  do_check_eq(recordCount, 1);
+  do_check_eq(recorder.sessionRestored, -1);
+  do_check_neq(recorder._timer, null);
+
+  yield sleep(125);
+  do_check_eq(recordCount, 2);
+  yield sleep(100);
+  do_check_eq(recordCount, 3);
+  do_check_eq(recorder.sessionRestored, -1);
+
+  monkeypatchStartupInfo(recorder, now);
+  yield sleep(100);
+  do_check_eq(recordCount, 4);
+  do_check_eq(recorder.sessionRestored, 1500);
+
+  // The timer should be removed and we should not fire again.
+  do_check_null(recorder._timer);
+  yield sleep(100);
+  do_check_eq(recordCount, 4);
+
+  recorder.onShutdown();
+});
+
+add_test(function test_timer_clear_on_shutdown() {
+  let recorder = new SessionRecorder("testing.timer_clear_on_shutdown.");
+  let now = new Date();
+
+  Object.defineProperty(recorder, "_getStartupInfo", {
+    value: function _getStartupInfo() {
+      return {
+        process: now,
+        main: new Date(now.getTime() + 500),
+        firstPaint: new Date(now.getTime() + 1000),
+      };
+    },
+  });
+
+  do_check_null(recorder._timer);
+  recorder.onStartup();
+  do_check_neq(recorder._timer, null);
+
+  recorder.onShutdown();
+  do_check_null(recorder._timer);
+
+  run_next_test();
+});
+
+add_task(function* test_previous_clean() {
+  let now = new Date();
+  let recorder = getRecorder("previous_clean", now);
+  yield sleep(25);
+  recorder.onStartup();
+
+  recorder.incrementActiveTicks();
+  recorder.incrementActiveTicks();
+
+  yield sleep(25);
+  recorder.onShutdown();
+
+  let total = recorder.totalTime;
+
+  yield sleep(25);
+  let now2 = new Date();
+  let recorder2 = getRecorder("previous_clean", now2, 100);
+  yield sleep(25);
+  recorder2.onStartup();
+
+  do_check_eq(recorder2.startDate.getTime(), now2.getTime());
+  do_check_eq(recorder2.main, 100);
+  do_check_eq(recorder2.firstPaint, 200);
+  do_check_eq(recorder2.sessionRestored, 300);
+
+  let sessions = recorder2.getPreviousSessions();
+  do_check_eq(Object.keys(sessions).length, 1);
+  do_check_true(0 in sessions);
+  let session = sessions[0];
+  do_check_true(session.clean);
+  do_check_eq(session.startDate.getTime(), now.getTime());
+  do_check_eq(session.main, 500);
+  do_check_eq(session.firstPaint, 1000);
+  do_check_eq(session.sessionRestored, 1500);
+  do_check_eq(session.totalTime, total);
+  do_check_eq(session.activeTicks, 2);
+
+  recorder2.onShutdown();
+});
+
+add_task(function* test_previous_abort() {
+  let now = new Date();
+  let recorder = getRecorder("previous_abort", now);
+  yield sleep(25);
+  recorder.onStartup();
+  recorder.incrementActiveTicks();
+  yield sleep(25);
+  let total = recorder.totalTime;
+  yield sleep(25);
+
+  let now2 = new Date();
+  let recorder2 = getRecorder("previous_abort", now2);
+  yield sleep(25);
+  recorder2.onStartup();
+
+  let sessions = recorder2.getPreviousSessions();
+  do_check_eq(Object.keys(sessions).length, 1);
+  do_check_true(0 in sessions);
+  let session = sessions[0];
+  do_check_false(session.clean);
+  do_check_eq(session.totalTime, total);
+
+  recorder.onShutdown();
+  recorder2.onShutdown();
+});
+
+add_task(function* test_multiple_sessions() {
+  for (let i = 0; i < 10; i++) {
+    let recorder = getRecorder("multiple_sessions");
+    yield sleep(25);
+    recorder.onStartup();
+    for (let j = 0; j < i; j++) {
+      recorder.incrementActiveTicks();
+    }
+    yield sleep(25);
+    recorder.onShutdown();
+    yield sleep(25);
+  }
+
+  let recorder = getRecorder("multiple_sessions");
+  recorder.onStartup();
+
+  let sessions = recorder.getPreviousSessions();
+  do_check_eq(Object.keys(sessions).length, 10);
+
+  for (let [i, session] of Object.entries(sessions)) {
+    do_check_eq(session.activeTicks, i);
+
+    if (i > 0) {
+      do_check_true(session.startDate.getTime() > sessions[i-1].startDate.getTime());
+    }
+  }
+
+  // #6 is preserved since >=.
+  let threshold = sessions[6].startDate;
+  recorder.pruneOldSessions(threshold);
+
+  sessions = recorder.getPreviousSessions();
+  do_check_eq(Object.keys(sessions).length, 4);
+
+  recorder.pruneOldSessions(threshold);
+  sessions = recorder.getPreviousSessions();
+  do_check_eq(Object.keys(sessions).length, 4);
+  do_check_eq(recorder._prunedIndex, 5);
+
+  recorder.onShutdown();
+});
+
+add_task(function* test_record_activity() {
+  let recorder = getRecorder("record_activity");
+  yield sleep(25);
+  recorder.onStartup();
+  let total = recorder.totalTime;
+  yield sleep(25);
+
+  for (let i = 0; i < 3; i++) {
+    Services.obs.notifyObservers(null, "user-interaction-active", null);
+    yield sleep(25);
+    do_check_true(recorder.fineTotalTime > total);
+    total = recorder.fineTotalTime;
+  }
+
+  do_check_eq(recorder.activeTicks, 3);
+
+  // Now send inactive. We should increment total time but not active.
+  Services.obs.notifyObservers(null, "user-interaction-inactive", null);
+  do_check_eq(recorder.activeTicks, 3);
+  do_check_true(recorder.fineTotalTime > total);
+  total = recorder.fineTotalTime;
+  yield sleep(25);
+
+  // If we send active again, this should be counted as inactive.
+  Services.obs.notifyObservers(null, "user-interaction-active", null);
+  do_check_eq(recorder.activeTicks, 3);
+  do_check_true(recorder.fineTotalTime > total);
+  total = recorder.fineTotalTime;
+  yield sleep(25);
+
+  // If we send active again, this should be counted as active.
+  Services.obs.notifyObservers(null, "user-interaction-active", null);
+  do_check_eq(recorder.activeTicks, 4);
+
+  Services.obs.notifyObservers(null, "user-interaction-active", null);
+  do_check_eq(recorder.activeTicks, 5);
+
+  recorder.onShutdown();
+});
+
diff --git a/toolkit/modules/tests/xpcshell/test_sqlite.js b/toolkit/modules/tests/xpcshell/test_sqlite.js
new file mode 100644
index 000000000..edd39d977
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_sqlite.js
@@ -0,0 +1,1094 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+var {classes: Cc, interfaces: Ci, utils: Cu} = Components;
+
+do_get_profile();
+
+Cu.import("resource://gre/modules/Promise.jsm");
+Cu.import("resource://gre/modules/PromiseUtils.jsm");
+Cu.import("resource://gre/modules/osfile.jsm");
+Cu.import("resource://gre/modules/FileUtils.jsm");
+Cu.import("resource://gre/modules/Services.jsm");
+Cu.import("resource://gre/modules/Sqlite.jsm");
+Cu.import("resource://gre/modules/Task.jsm");
+Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+
+// To spin the event loop in test.
+Cu.import("resource://services-common/async.js");
+
+function sleep(ms) {
+  let deferred = Promise.defer();
+
+  let timer = Cc["@mozilla.org/timer;1"]
+                .createInstance(Ci.nsITimer);
+
+  timer.initWithCallback({
+    notify: function () {
+      deferred.resolve();
+    },
+  }, ms, timer.TYPE_ONE_SHOT);
+
+  return deferred.promise;
+}
+
+// When testing finalization, use this to tell Sqlite.jsm to not throw
+// an uncatchable `Promise.reject`
+function failTestsOnAutoClose(enabled)  {
+  Cu.getGlobalForObject(Sqlite).Debugging.failTestsOnAutoClose = enabled;
+}
+
+function getConnection(dbName, extraOptions={}) {
+  let path = dbName + ".sqlite";
+  let options = {path: path};
+  for (let [k, v] of Object.entries(extraOptions)) {
+    options[k] = v;
+  }
+
+  return Sqlite.openConnection(options);
+}
+
+function* getDummyDatabase(name, extraOptions={}) {
+  const TABLES = {
+    dirs: "id INTEGER PRIMARY KEY AUTOINCREMENT, path TEXT",
+    files: "id INTEGER PRIMARY KEY AUTOINCREMENT, dir_id INTEGER, path TEXT",
+  };
+
+  let c = yield getConnection(name, extraOptions);
+  c._initialStatementCount = 0;
+
+  for (let [k, v] of Object.entries(TABLES)) {
+    yield c.execute("CREATE TABLE " + k + "(" + v + ")");
+    c._initialStatementCount++;
+  }
+
+  return c;
+}
+
+function* getDummyTempDatabase(name, extraOptions={}) {
+  const TABLES = {
+    dirs: "id INTEGER PRIMARY KEY AUTOINCREMENT, path TEXT",
+    files: "id INTEGER PRIMARY KEY AUTOINCREMENT, dir_id INTEGER, path TEXT",
+  };
+
+  let c = yield getConnection(name, extraOptions);
+  c._initialStatementCount = 0;
+
+  for (let [k, v] of Object.entries(TABLES)) {
+    yield c.execute("CREATE TEMP TABLE " + k + "(" + v + ")");
+    c._initialStatementCount++;
+  }
+
+  return c;
+}
+
+function run_test() {
+  Cu.import("resource://testing-common/services/common/logging.js");
+  initTestLogging("Trace");
+
+  run_next_test();
+}
+
+add_task(function* test_open_normal() {
+  let c = yield Sqlite.openConnection({path: "test_open_normal.sqlite"});
+  yield c.close();
+});
+
+add_task(function* test_open_unshared() {
+  let path = OS.Path.join(OS.Constants.Path.profileDir, "test_open_unshared.sqlite");
+
+  let c = yield Sqlite.openConnection({path: path, sharedMemoryCache: false});
+  yield c.close();
+});
+
+add_task(function* test_get_dummy_database() {
+  let db = yield getDummyDatabase("get_dummy_database");
+
+  do_check_eq(typeof(db), "object");
+  yield db.close();
+});
+
+add_task(function* test_schema_version() {
+  let db = yield getDummyDatabase("schema_version");
+
+  let version = yield db.getSchemaVersion();
+  do_check_eq(version, 0);
+
+  db.setSchemaVersion(14);
+  version = yield db.getSchemaVersion();
+  do_check_eq(version, 14);
+
+  for (let v of [0.5, "foobar", NaN]) {
+    let success;
+    try {
+      yield db.setSchemaVersion(v);
+      do_print("Schema version " + v + " should have been rejected");
+      success = false;
+    } catch (ex) {
+      if (!ex.message.startsWith("Schema version must be an integer."))
+        throw ex;
+      success = true;
+    }
+    do_check_true(success);
+
+    version = yield db.getSchemaVersion();
+    do_check_eq(version, 14);
+  }
+
+  yield db.close();
+});
+
+add_task(function* test_simple_insert() {
+  let c = yield getDummyDatabase("simple_insert");
+
+  let result = yield c.execute("INSERT INTO dirs VALUES (NULL, 'foo')");
+  do_check_true(Array.isArray(result));
+  do_check_eq(result.length, 0);
+  yield c.close();
+});
+
+add_task(function* test_simple_bound_array() {
+  let c = yield getDummyDatabase("simple_bound_array");
+
+  let result = yield c.execute("INSERT INTO dirs VALUES (?, ?)", [1, "foo"]);
+  do_check_eq(result.length, 0);
+  yield c.close();
+});
+
+add_task(function* test_simple_bound_object() {
+  let c = yield getDummyDatabase("simple_bound_object");
+  let result = yield c.execute("INSERT INTO dirs VALUES (:id, :path)",
+                               {id: 1, path: "foo"});
+  do_check_eq(result.length, 0);
+  result = yield c.execute("SELECT id, path FROM dirs");
+  do_check_eq(result.length, 1);
+  do_check_eq(result[0].getResultByName("id"), 1);
+  do_check_eq(result[0].getResultByName("path"), "foo");
+  yield c.close();
+});
+
+// This is mostly a sanity test to ensure simple executions work.
+add_task(function* test_simple_insert_then_select() {
+  let c = yield getDummyDatabase("simple_insert_then_select");
+
+  yield c.execute("INSERT INTO dirs VALUES (NULL, 'foo')");
+  yield c.execute("INSERT INTO dirs (path) VALUES (?)", ["bar"]);
+
+  let result = yield c.execute("SELECT * FROM dirs");
+  do_check_eq(result.length, 2);
+
+  let i = 0;
+  for (let row of result) {
+    i++;
+
+    do_check_eq(row.numEntries, 2);
+    do_check_eq(row.getResultByIndex(0), i);
+
+    let expected = {1: "foo", 2: "bar"}[i];
+    do_check_eq(row.getResultByName("path"), expected);
+  }
+
+  yield c.close();
+});
+
+add_task(function* test_repeat_execution() {
+  let c = yield getDummyDatabase("repeat_execution");
+
+  let sql = "INSERT INTO dirs (path) VALUES (:path)";
+  yield c.executeCached(sql, {path: "foo"});
+  yield c.executeCached(sql);
+
+  let result = yield c.execute("SELECT * FROM dirs");
+
+  do_check_eq(result.length, 2);
+
+  yield c.close();
+});
+
+add_task(function* test_table_exists() {
+  let c = yield getDummyDatabase("table_exists");
+
+  do_check_false(yield c.tableExists("does_not_exist"));
+  do_check_true(yield c.tableExists("dirs"));
+  do_check_true(yield c.tableExists("files"));
+
+  yield c.close();
+});
+
+add_task(function* test_index_exists() {
+  let c = yield getDummyDatabase("index_exists");
+
+  do_check_false(yield c.indexExists("does_not_exist"));
+
+  yield c.execute("CREATE INDEX my_index ON dirs (path)");
+  do_check_true(yield c.indexExists("my_index"));
+
+  yield c.close();
+});
+
+add_task(function* test_temp_table_exists() {
+  let c = yield getDummyTempDatabase("temp_table_exists");
+
+  do_check_false(yield c.tableExists("temp_does_not_exist"));
+  do_check_true(yield c.tableExists("dirs"));
+  do_check_true(yield c.tableExists("files"));
+
+  yield c.close();
+});
+
+add_task(function* test_temp_index_exists() {
+  let c = yield getDummyTempDatabase("temp_index_exists");
+
+  do_check_false(yield c.indexExists("temp_does_not_exist"));
+
+  yield c.execute("CREATE INDEX my_index ON dirs (path)");
+  do_check_true(yield c.indexExists("my_index"));
+
+  yield c.close();
+});
+
+add_task(function* test_close_cached() {
+  let c = yield getDummyDatabase("close_cached");
+
+  yield c.executeCached("SELECT * FROM dirs");
+  yield c.executeCached("SELECT * FROM files");
+
+  yield c.close();
+});
+
+add_task(function* test_execute_invalid_statement() {
+  let c = yield getDummyDatabase("invalid_statement");
+
+  let deferred = Promise.defer();
+
+  do_check_eq(c._connectionData._anonymousStatements.size, 0);
+
+  c.execute("SELECT invalid FROM unknown").then(do_throw, function onError(error) {
+    deferred.resolve();
+  });
+
+  yield deferred.promise;
+
+  // Ensure we don't leak the statement instance.
+  do_check_eq(c._connectionData._anonymousStatements.size, 0);
+
+  yield c.close();
+});
+
+add_task(function* test_incorrect_like_bindings() {
+  let c = yield getDummyDatabase("incorrect_like_bindings");
+
+  let sql = "select * from dirs where path LIKE 'non%'";
+  Assert.throws(() => c.execute(sql), /Please enter a LIKE clause/);
+  Assert.throws(() => c.executeCached(sql), /Please enter a LIKE clause/);
+
+  yield c.close();
+});
+add_task(function* test_on_row_exception_ignored() {
+  let c = yield getDummyDatabase("on_row_exception_ignored");
+
+  let sql = "INSERT INTO dirs (path) VALUES (?)";
+  for (let i = 0; i < 10; i++) {
+    yield c.executeCached(sql, ["dir" + i]);
+  }
+
+  let i = 0;
+  let hasResult = yield c.execute("SELECT * FROM DIRS", null, function onRow(row) {
+    i++;
+
+    throw new Error("Some silly error.");
+  });
+
+  do_check_eq(hasResult, true);
+  do_check_eq(i, 10);
+
+  yield c.close();
+});
+
+// Ensure StopIteration during onRow causes processing to stop.
+add_task(function* test_on_row_stop_iteration() {
+  let c = yield getDummyDatabase("on_row_stop_iteration");
+
+  let sql = "INSERT INTO dirs (path) VALUES (?)";
+  for (let i = 0; i < 10; i++) {
+    yield c.executeCached(sql, ["dir" + i]);
+  }
+
+  let i = 0;
+  let hasResult = yield c.execute("SELECT * FROM dirs", null, function onRow(row) {
+    i++;
+
+    if (i == 5) {
+      throw StopIteration;
+    }
+  });
+
+  do_check_eq(hasResult, true);
+  do_check_eq(i, 5);
+
+  yield c.close();
+});
+
+// Ensure execute resolves to false when no rows are selected.
+add_task(function* test_on_row_stop_iteration() {
+  let c = yield getDummyDatabase("no_on_row");
+
+  let i = 0;
+  let hasResult = yield c.execute(`SELECT * FROM dirs WHERE path="nonexistent"`, null, function onRow(row) {
+    i++;
+  });
+
+  do_check_eq(hasResult, false);
+  do_check_eq(i, 0);
+
+  yield c.close();
+});
+
+add_task(function* test_invalid_transaction_type() {
+  let c = yield getDummyDatabase("invalid_transaction_type");
+
+  Assert.throws(() => c.executeTransaction(function* () {}, "foobar"),
+                /Unknown transaction type/,
+                "Unknown transaction type should throw");
+
+  yield c.close();
+});
+
+add_task(function* test_execute_transaction_success() {
+  let c = yield getDummyDatabase("execute_transaction_success");
+
+  do_check_false(c.transactionInProgress);
+
+  yield c.executeTransaction(function* transaction(conn) {
+    do_check_eq(c, conn);
+    do_check_true(conn.transactionInProgress);
+
+    yield conn.execute("INSERT INTO dirs (path) VALUES ('foo')");
+  });
+
+  do_check_false(c.transactionInProgress);
+  let rows = yield c.execute("SELECT * FROM dirs");
+  do_check_true(Array.isArray(rows));
+  do_check_eq(rows.length, 1);
+
+  yield c.close();
+});
+
+add_task(function* test_execute_transaction_rollback() {
+  let c = yield getDummyDatabase("execute_transaction_rollback");
+
+  let deferred = Promise.defer();
+
+  c.executeTransaction(function* transaction(conn) {
+    yield conn.execute("INSERT INTO dirs (path) VALUES ('foo')");
+    print("Expecting error with next statement.");
+    yield conn.execute("INSERT INTO invalid VALUES ('foo')");
+
+    // We should never get here.
+    do_throw();
+  }).then(do_throw, function onError(error) {
+    deferred.resolve();
+  });
+
+  yield deferred.promise;
+
+  let rows = yield c.execute("SELECT * FROM dirs");
+  do_check_eq(rows.length, 0);
+
+  yield c.close();
+});
+
+add_task(function* test_close_during_transaction() {
+  let c = yield getDummyDatabase("close_during_transaction");
+
+  yield c.execute("INSERT INTO dirs (path) VALUES ('foo')");
+
+  let promise = c.executeTransaction(function* transaction(conn) {
+    yield c.execute("INSERT INTO dirs (path) VALUES ('bar')");
+  });
+  yield c.close();
+
+  yield Assert.rejects(promise,
+                       /Transaction canceled due to a closed connection/,
+                       "closing a connection in the middle of a transaction should reject it");
+
+  let c2 = yield getConnection("close_during_transaction");
+  let rows = yield c2.execute("SELECT * FROM dirs");
+  do_check_eq(rows.length, 1);
+
+  yield c2.close();
+});
+
+// Verify that we support concurrent transactions.
+add_task(function* test_multiple_transactions() {
+  let c = yield getDummyDatabase("detect_multiple_transactions");
+
+  for (let i = 0; i < 10; ++i) {
+    // We don't wait for these transactions.
+    c.executeTransaction(function* () {
+      yield c.execute("INSERT INTO dirs (path) VALUES (:path)",
+                      { path: `foo${i}` });
+      yield c.execute("SELECT * FROM dirs");
+    });
+  }
+  for (let i = 0; i < 10; ++i) {
+    yield c.executeTransaction(function* () {
+      yield c.execute("INSERT INTO dirs (path) VALUES (:path)",
+                      { path: `bar${i}` });
+      yield c.execute("SELECT * FROM dirs");
+    });
+  }
+
+  let rows = yield c.execute("SELECT * FROM dirs");
+  do_check_eq(rows.length, 20);
+
+  yield c.close();
+});
+
+// Verify that wrapped transactions ignore a BEGIN TRANSACTION failure, when
+// an externally opened transaction exists.
+add_task(function* test_wrapped_connection_transaction() {
+  let file = new FileUtils.File(OS.Path.join(OS.Constants.Path.profileDir,
+                                             "test_wrapStorageConnection.sqlite"));
+  let c = yield new Promise((resolve, reject) => {
+    Services.storage.openAsyncDatabase(file, null, (status, db) => {
+      if (Components.isSuccessCode(status)) {
+        resolve(db.QueryInterface(Ci.mozIStorageAsyncConnection));
+      } else {
+        reject(new Error(status));
+      }
+    });
+  });
+
+  let wrapper = yield Sqlite.wrapStorageConnection({ connection: c });
+  // Start a transaction on the raw connection.
+  yield c.executeSimpleSQLAsync("BEGIN");
+  // Now use executeTransaction, it will be executed, but not in a transaction.
+  yield wrapper.executeTransaction(function* () {
+    yield wrapper.execute("CREATE TABLE test (id INTEGER PRIMARY KEY AUTOINCREMENT)");
+  });
+  // This should not fail cause the internal transaction has not been created.
+  yield c.executeSimpleSQLAsync("COMMIT");
+
+  yield wrapper.execute("SELECT * FROM test");
+
+  // Closing the wrapper should just finalize statements but not close the
+  // database.
+  yield wrapper.close();
+  yield c.asyncClose();
+});
+
+add_task(function* test_shrink_memory() {
+  let c = yield getDummyDatabase("shrink_memory");
+
+  // It's just a simple sanity test. We have no way of measuring whether this
+  // actually does anything.
+
+  yield c.shrinkMemory();
+  yield c.close();
+});
+
+add_task(function* test_no_shrink_on_init() {
+  let c = yield getConnection("no_shrink_on_init",
+                              {shrinkMemoryOnConnectionIdleMS: 200});
+
+  let oldShrink = c._connectionData.shrinkMemory;
+  let count = 0;
+  Object.defineProperty(c._connectionData, "shrinkMemory", {
+    value: function () {
+      count++;
+    },
+  });
+
+  // We should not shrink until a statement has been executed.
+  yield sleep(220);
+  do_check_eq(count, 0);
+
+  yield c.execute("SELECT 1");
+  yield sleep(220);
+  do_check_eq(count, 1);
+
+  yield c.close();
+});
+
+add_task(function* test_idle_shrink_fires() {
+  let c = yield getDummyDatabase("idle_shrink_fires",
+                                 {shrinkMemoryOnConnectionIdleMS: 200});
+  c._connectionData._clearIdleShrinkTimer();
+
+  let oldShrink = c._connectionData.shrinkMemory;
+  let shrinkPromises = [];
+
+  let count = 0;
+  Object.defineProperty(c._connectionData, "shrinkMemory", {
+    value: function () {
+      count++;
+      let promise = oldShrink.call(c._connectionData);
+      shrinkPromises.push(promise);
+      return promise;
+    },
+  });
+
+  // We reset the idle shrink timer after monkeypatching because otherwise the
+  // installed timer callback will reference the non-monkeypatched function.
+  c._connectionData._startIdleShrinkTimer();
+
+  yield sleep(220);
+  do_check_eq(count, 1);
+  do_check_eq(shrinkPromises.length, 1);
+  yield shrinkPromises[0];
+  shrinkPromises.shift();
+
+  // We shouldn't shrink again unless a statement was executed.
+  yield sleep(300);
+  do_check_eq(count, 1);
+
+  yield c.execute("SELECT 1");
+  yield sleep(300);
+
+  do_check_eq(count, 2);
+  do_check_eq(shrinkPromises.length, 1);
+  yield shrinkPromises[0];
+
+  yield c.close();
+});
+
+add_task(function* test_idle_shrink_reset_on_operation() {
+  const INTERVAL = 500;
+  let c = yield getDummyDatabase("idle_shrink_reset_on_operation",
+                                 {shrinkMemoryOnConnectionIdleMS: INTERVAL});
+
+  c._connectionData._clearIdleShrinkTimer();
+
+  let oldShrink = c._connectionData.shrinkMemory;
+  let shrinkPromises = [];
+  let count = 0;
+
+  Object.defineProperty(c._connectionData, "shrinkMemory", {
+    value: function () {
+      count++;
+      let promise = oldShrink.call(c._connectionData);
+      shrinkPromises.push(promise);
+      return promise;
+    },
+  });
+
+  let now = new Date();
+  c._connectionData._startIdleShrinkTimer();
+
+  let initialIdle = new Date(now.getTime() + INTERVAL);
+
+  // Perform database operations until initial scheduled time has been passed.
+  let i = 0;
+  while (new Date() < initialIdle) {
+    yield c.execute("INSERT INTO dirs (path) VALUES (?)", ["" + i]);
+    i++;
+  }
+
+  do_check_true(i > 0);
+
+  // We should not have performed an idle while doing operations.
+  do_check_eq(count, 0);
+
+  // Wait for idle timer.
+  yield sleep(INTERVAL);
+
+  // Ensure we fired.
+  do_check_eq(count, 1);
+  do_check_eq(shrinkPromises.length, 1);
+  yield shrinkPromises[0];
+
+  yield c.close();
+});
+
+add_task(function* test_in_progress_counts() {
+  let c = yield getDummyDatabase("in_progress_counts");
+  do_check_eq(c._connectionData._statementCounter, c._initialStatementCount);
+  do_check_eq(c._connectionData._pendingStatements.size, 0);
+  yield c.executeCached("INSERT INTO dirs (path) VALUES ('foo')");
+  do_check_eq(c._connectionData._statementCounter, c._initialStatementCount + 1);
+  do_check_eq(c._connectionData._pendingStatements.size, 0);
+
+  let expectOne;
+  let expectTwo;
+
+  // Please forgive me.
+  let inner = Async.makeSpinningCallback();
+  let outer = Async.makeSpinningCallback();
+
+  // We want to make sure that two queries executing simultaneously
+  // result in `_pendingStatements.size` reaching 2, then dropping back to 0.
+  //
+  // To do so, we kick off a second statement within the row handler
+  // of the first, then wait for both to finish.
+
+  yield c.executeCached("SELECT * from dirs", null, function onRow() {
+    // In the onRow handler, we're still an outstanding query.
+    // Expect a single in-progress entry.
+    expectOne = c._connectionData._pendingStatements.size;
+
+    // Start another query, checking that after its statement has been created
+    // there are two statements in progress.
+    let p = c.executeCached("SELECT 10, path from dirs");
+    expectTwo = c._connectionData._pendingStatements.size;
+
+    // Now wait for it to be done before we return from the row handler …
+    p.then(function onInner() {
+      inner();
+    });
+  }).then(function onOuter() {
+    // … and wait for the inner to be done before we finish …
+    inner.wait();
+    outer();
+  });
+
+  // … and wait for both queries to have finished before we go on and
+  // test postconditions.
+  outer.wait();
+
+  do_check_eq(expectOne, 1);
+  do_check_eq(expectTwo, 2);
+  do_check_eq(c._connectionData._statementCounter, c._initialStatementCount + 3);
+  do_check_eq(c._connectionData._pendingStatements.size, 0);
+
+  yield c.close();
+});
+
+add_task(function* test_discard_while_active() {
+  let c = yield getDummyDatabase("discard_while_active");
+
+  yield c.executeCached("INSERT INTO dirs (path) VALUES ('foo')");
+  yield c.executeCached("INSERT INTO dirs (path) VALUES ('bar')");
+
+  let discarded = -1;
+  let first = true;
+  let sql = "SELECT * FROM dirs";
+  yield c.executeCached(sql, null, function onRow(row) {
+    if (!first) {
+      return;
+    }
+    first = false;
+    discarded = c.discardCachedStatements();
+  });
+
+  // We discarded everything, because the SELECT had already started to run.
+  do_check_eq(3, discarded);
+
+  // And again is safe.
+  do_check_eq(0, c.discardCachedStatements());
+
+  yield c.close();
+});
+
+add_task(function* test_discard_cached() {
+  let c = yield getDummyDatabase("discard_cached");
+
+  yield c.executeCached("SELECT * from dirs");
+  do_check_eq(1, c._connectionData._cachedStatements.size);
+
+  yield c.executeCached("SELECT * from files");
+  do_check_eq(2, c._connectionData._cachedStatements.size);
+
+  yield c.executeCached("SELECT * from dirs");
+  do_check_eq(2, c._connectionData._cachedStatements.size);
+
+  c.discardCachedStatements();
+  do_check_eq(0, c._connectionData._cachedStatements.size);
+
+  yield c.close();
+});
+
+add_task(function* test_programmatic_binding() {
+  let c = yield getDummyDatabase("programmatic_binding");
+
+  let bindings = [
+    {id: 1,    path: "foobar"},
+    {id: null, path: "baznoo"},
+    {id: 5,    path: "toofoo"},
+  ];
+
+  let sql = "INSERT INTO dirs VALUES (:id, :path)";
+  let result = yield c.execute(sql, bindings);
+  do_check_eq(result.length, 0);
+
+  let rows = yield c.executeCached("SELECT * from dirs");
+  do_check_eq(rows.length, 3);
+  yield c.close();
+});
+
+add_task(function* test_programmatic_binding_transaction() {
+  let c = yield getDummyDatabase("programmatic_binding_transaction");
+
+  let bindings = [
+    {id: 1,    path: "foobar"},
+    {id: null, path: "baznoo"},
+    {id: 5,    path: "toofoo"},
+  ];
+
+  let sql = "INSERT INTO dirs VALUES (:id, :path)";
+  yield c.executeTransaction(function* transaction() {
+    let result = yield c.execute(sql, bindings);
+    do_check_eq(result.length, 0);
+
+    let rows = yield c.executeCached("SELECT * from dirs");
+    do_check_eq(rows.length, 3);
+  });
+
+  // Transaction committed.
+  let rows = yield c.executeCached("SELECT * from dirs");
+  do_check_eq(rows.length, 3);
+  yield c.close();
+});
+
+add_task(function* test_programmatic_binding_transaction_partial_rollback() {
+  let c = yield getDummyDatabase("programmatic_binding_transaction_partial_rollback");
+
+  let bindings = [
+    {id: 2, path: "foobar"},
+    {id: 3, path: "toofoo"},
+  ];
+
+  let sql = "INSERT INTO dirs VALUES (:id, :path)";
+
+  // Add some data in an implicit transaction before beginning the batch insert.
+  yield c.execute(sql, {id: 1, path: "works"});
+
+  let secondSucceeded = false;
+  try {
+    yield c.executeTransaction(function* transaction() {
+      // Insert one row. This won't implicitly start a transaction.
+      let result = yield c.execute(sql, bindings[0]);
+
+      // Insert multiple rows. mozStorage will want to start a transaction.
+      // One of the inserts will fail, so the transaction should be rolled back.
+      result = yield c.execute(sql, bindings);
+      secondSucceeded = true;
+    });
+  } catch (ex) {
+    print("Caught expected exception: " + ex);
+  }
+
+  // We did not get to the end of our in-transaction block.
+  do_check_false(secondSucceeded);
+
+  // Everything that happened in *our* transaction, not mozStorage's, got
+  // rolled back, but the first row still exists.
+  let rows = yield c.executeCached("SELECT * from dirs");
+  do_check_eq(rows.length, 1);
+  do_check_eq(rows[0].getResultByName("path"), "works");
+  yield c.close();
+});
+
+// Just like the previous test, but relying on the implicit
+// transaction established by mozStorage.
+add_task(function* test_programmatic_binding_implicit_transaction() {
+  let c = yield getDummyDatabase("programmatic_binding_implicit_transaction");
+
+  let bindings = [
+    {id: 2, path: "foobar"},
+    {id: 1, path: "toofoo"},
+  ];
+
+  let sql = "INSERT INTO dirs VALUES (:id, :path)";
+  let secondSucceeded = false;
+  yield c.execute(sql, {id: 1, path: "works"});
+  try {
+    let result = yield c.execute(sql, bindings);
+    secondSucceeded = true;
+  } catch (ex) {
+    print("Caught expected exception: " + ex);
+  }
+
+  do_check_false(secondSucceeded);
+
+  // The entire batch failed.
+  let rows = yield c.executeCached("SELECT * from dirs");
+  do_check_eq(rows.length, 1);
+  do_check_eq(rows[0].getResultByName("path"), "works");
+  yield c.close();
+});
+
+// Test that direct binding of params and execution through mozStorage doesn't
+// error when we manually create a transaction. See Bug 856925.
+add_task(function* test_direct() {
+  let file = FileUtils.getFile("TmpD", ["test_direct.sqlite"]);
+  file.createUnique(Ci.nsIFile.NORMAL_FILE_TYPE, FileUtils.PERMS_FILE);
+  print("Opening " + file.path);
+
+  let db = Services.storage.openDatabase(file);
+  print("Opened " + db);
+
+  db.executeSimpleSQL("CREATE TABLE types (id INTEGER PRIMARY KEY AUTOINCREMENT, name TEXT, UNIQUE (name))");
+  print("Executed setup.");
+
+  let statement = db.createAsyncStatement("INSERT INTO types (name) VALUES (:name)");
+  let params = statement.newBindingParamsArray();
+  let one = params.newBindingParams();
+  one.bindByName("name", null);
+  params.addParams(one);
+  let two = params.newBindingParams();
+  two.bindByName("name", "bar");
+  params.addParams(two);
+
+  print("Beginning transaction.");
+  let begin = db.createAsyncStatement("BEGIN DEFERRED TRANSACTION");
+  let end = db.createAsyncStatement("COMMIT TRANSACTION");
+
+  let deferred = Promise.defer();
+  begin.executeAsync({
+    handleCompletion: function (reason) {
+      deferred.resolve();
+    }
+  });
+  yield deferred.promise;
+
+  statement.bindParameters(params);
+
+  deferred = Promise.defer();
+  print("Executing async.");
+  statement.executeAsync({
+    handleResult: function (resultSet) {
+    },
+
+    handleError:  function (error) {
+      print("Error when executing SQL (" + error.result + "): " +
+            error.message);
+      print("Original error: " + error.error);
+      errors.push(error);
+      deferred.reject();
+    },
+
+    handleCompletion: function (reason) {
+      print("Completed.");
+      deferred.resolve();
+    }
+  });
+
+  yield deferred.promise;
+
+  deferred = Promise.defer();
+  end.executeAsync({
+    handleCompletion: function (reason) {
+      deferred.resolve();
+    }
+  });
+  yield deferred.promise;
+
+  statement.finalize();
+  begin.finalize();
+  end.finalize();
+
+  deferred = Promise.defer();
+  db.asyncClose(function () {
+    deferred.resolve()
+  });
+  yield deferred.promise;
+});
+
+// Test Sqlite.cloneStorageConnection.
+add_task(function* test_cloneStorageConnection() {
+  let file = new FileUtils.File(OS.Path.join(OS.Constants.Path.profileDir,
+                                             "test_cloneStorageConnection.sqlite"));
+  let c = yield new Promise((resolve, reject) => {
+    Services.storage.openAsyncDatabase(file, null, (status, db) => {
+      if (Components.isSuccessCode(status)) {
+        resolve(db.QueryInterface(Ci.mozIStorageAsyncConnection));
+      } else {
+        reject(new Error(status));
+      }
+    });
+  });
+
+  let clone = yield Sqlite.cloneStorageConnection({ connection: c, readOnly: true });
+  // Just check that it works.
+  yield clone.execute("SELECT 1");
+
+  let clone2 = yield Sqlite.cloneStorageConnection({ connection: c, readOnly: false });
+  // Just check that it works.
+  yield clone2.execute("CREATE TABLE test (id INTEGER PRIMARY KEY)");
+
+  // Closing order should not matter.
+  yield c.asyncClose();
+  yield clone2.close();
+  yield clone.close();
+});
+
+// Test Sqlite.cloneStorageConnection invalid argument.
+add_task(function* test_cloneStorageConnection() {
+  try {
+    let clone = yield Sqlite.cloneStorageConnection({ connection: null });
+    do_throw(new Error("Should throw on invalid connection"));
+  } catch (ex) {
+    if (ex.name != "TypeError") {
+      throw ex;
+    }
+  }
+});
+
+// Test clone() method.
+add_task(function* test_clone() {
+  let c = yield getDummyDatabase("clone");
+
+  let clone = yield c.clone();
+  // Just check that it works.
+  yield clone.execute("SELECT 1");
+  // Closing order should not matter.
+  yield c.close();
+  yield clone.close();
+});
+
+// Test clone(readOnly) method.
+add_task(function* test_readOnly_clone() {
+  let path = OS.Path.join(OS.Constants.Path.profileDir, "test_readOnly_clone.sqlite");
+  let c = yield Sqlite.openConnection({path: path, sharedMemoryCache: false});
+
+  let clone = yield c.clone(true);
+  // Just check that it works.
+  yield clone.execute("SELECT 1");
+  // But should not be able to write.
+
+  yield Assert.rejects(clone.execute("CREATE TABLE test (id INTEGER PRIMARY KEY)"),
+                       /readonly/);
+  // Closing order should not matter.
+  yield c.close();
+  yield clone.close();
+});
+
+// Test Sqlite.wrapStorageConnection.
+add_task(function* test_wrapStorageConnection() {
+  let file = new FileUtils.File(OS.Path.join(OS.Constants.Path.profileDir,
+                                             "test_wrapStorageConnection.sqlite"));
+  let c = yield new Promise((resolve, reject) => {
+    Services.storage.openAsyncDatabase(file, null, (status, db) => {
+      if (Components.isSuccessCode(status)) {
+        resolve(db.QueryInterface(Ci.mozIStorageAsyncConnection));
+      } else {
+        reject(new Error(status));
+      }
+    });
+  });
+
+  let wrapper = yield Sqlite.wrapStorageConnection({ connection: c });
+  // Just check that it works.
+  yield wrapper.execute("SELECT 1");
+  yield wrapper.executeCached("SELECT 1");
+
+  // Closing the wrapper should just finalize statements but not close the
+  // database.
+  yield wrapper.close();
+  yield c.asyncClose();
+});
+
+// Test finalization
+add_task(function* test_closed_by_witness() {
+  failTestsOnAutoClose(false);
+  let c = yield getDummyDatabase("closed_by_witness");
+
+  Services.obs.notifyObservers(null, "sqlite-finalization-witness",
+                               c._connectionData._identifier);
+  // Since we triggered finalization ourselves, tell the witness to
+  // forget the connection so it does not trigger a finalization again
+  c._witness.forget();
+  yield c._connectionData._deferredClose.promise;
+  do_check_false(c._connectionData._open);
+  failTestsOnAutoClose(true);
+});
+
+add_task(function* test_warning_message_on_finalization() {
+  failTestsOnAutoClose(false);
+  let c = yield getDummyDatabase("warning_message_on_finalization");
+  let identifier = c._connectionData._identifier;
+  let deferred = Promise.defer();
+
+  let listener = {
+    observe: function(msg) {
+      let messageText = msg.message;
+      // Make sure the message starts with a warning containing the
+      // connection identifier
+      if (messageText.indexOf("Warning: Sqlite connection '" + identifier + "'") !== -1) {
+        deferred.resolve();
+      }
+    }
+  };
+  Services.console.registerListener(listener);
+
+  Services.obs.notifyObservers(null, "sqlite-finalization-witness", identifier);
+  // Since we triggered finalization ourselves, tell the witness to
+  // forget the connection so it does not trigger a finalization again
+  c._witness.forget();
+
+  yield deferred.promise;
+  Services.console.unregisterListener(listener);
+  failTestsOnAutoClose(true);
+});
+
+add_task(function* test_error_message_on_unknown_finalization() {
+  failTestsOnAutoClose(false);
+  let deferred = Promise.defer();
+
+  let listener = {
+    observe: function(msg) {
+      let messageText = msg.message;
+      if (messageText.indexOf("Error: Attempt to finalize unknown " +
+                              "Sqlite connection: foo") !== -1) {
+        deferred.resolve();
+      }
+    }
+  };
+  Services.console.registerListener(listener);
+  Services.obs.notifyObservers(null, "sqlite-finalization-witness", "foo");
+
+  yield deferred.promise;
+  Services.console.unregisterListener(listener);
+  failTestsOnAutoClose(true);
+});
+
+add_task(function* test_forget_witness_on_close() {
+  let c = yield getDummyDatabase("forget_witness_on_close");
+
+  let forgetCalled = false;
+  let oldWitness = c._witness;
+  c._witness = {
+    forget: function () {
+      forgetCalled = true;
+      oldWitness.forget();
+    },
+  };
+
+  yield c.close();
+  // After close, witness should have forgotten the connection
+  do_check_true(forgetCalled);
+});
+
+add_task(function* test_close_database_on_gc() {
+  failTestsOnAutoClose(false);
+  let finalPromise;
+
+  {
+    let collectedPromises = [];
+    for (let i = 0; i < 100; ++i) {
+      let deferred = PromiseUtils.defer();
+      let c = yield getDummyDatabase("gc_" + i);
+      c._connectionData._deferredClose.promise.then(deferred.resolve);
+      collectedPromises.push(deferred.promise);
+    }
+    finalPromise = Promise.all(collectedPromises);
+  }
+
+  // Call getDummyDatabase once more to clear any remaining
+  // references. This is needed at the moment, otherwise
+  // garbage-collection takes place after the shutdown barrier and the
+  // test will timeout. Once that is fixed, we can remove this line
+  // and be fine as long as the connections are garbage-collected.
+  let last = yield getDummyDatabase("gc_last");
+  yield last.close();
+
+  Components.utils.forceGC();
+  Components.utils.forceCC();
+  Components.utils.forceShrinkingGC();
+
+  yield finalPromise;
+  failTestsOnAutoClose(true);
+});
diff --git a/toolkit/modules/tests/xpcshell/test_sqlite_shutdown.js b/toolkit/modules/tests/xpcshell/test_sqlite_shutdown.js
new file mode 100644
index 000000000..b97fd8558
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_sqlite_shutdown.js
@@ -0,0 +1,122 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+var {classes: Cc, interfaces: Ci, utils: Cu} = Components;
+
+do_get_profile();
+
+Cu.import("resource://gre/modules/osfile.jsm");
+  // OS.File doesn't like to be first imported during shutdown
+Cu.import("resource://gre/modules/Sqlite.jsm");
+Cu.import("resource://gre/modules/Task.jsm");
+Cu.import("resource://gre/modules/Services.jsm");
+Cu.import("resource://gre/modules/AsyncShutdown.jsm");
+Cu.import("resource://gre/modules/Promise.jsm");
+
+function getConnection(dbName, extraOptions={}) {
+  let path = dbName + ".sqlite";
+  let options = {path: path};
+  for (let [k, v] of Object.entries(extraOptions)) {
+    options[k] = v;
+  }
+
+  return Sqlite.openConnection(options);
+}
+
+function* getDummyDatabase(name, extraOptions={}) {
+  const TABLES = {
+    dirs: "id INTEGER PRIMARY KEY AUTOINCREMENT, path TEXT",
+    files: "id INTEGER PRIMARY KEY AUTOINCREMENT, dir_id INTEGER, path TEXT",
+  };
+
+  let c = yield getConnection(name, extraOptions);
+  c._initialStatementCount = 0;
+
+  for (let [k, v] of Object.entries(TABLES)) {
+    yield c.execute("CREATE TABLE " + k + "(" + v + ")");
+    c._initialStatementCount++;
+  }
+
+  return c;
+}
+
+function sleep(ms) {
+  let deferred = Promise.defer();
+
+  let timer = Cc["@mozilla.org/timer;1"]
+                .createInstance(Ci.nsITimer);
+
+  timer.initWithCallback({
+    notify: function () {
+      deferred.resolve();
+    },
+  }, ms, timer.TYPE_ONE_SHOT);
+
+  return deferred.promise;
+}
+
+function run_test() {
+  run_next_test();
+}
+
+
+//
+// -----------  Don't add a test after this one, as it shuts down Sqlite.jsm
+//
+add_task(function* test_shutdown_clients() {
+  do_print("Ensuring that Sqlite.jsm doesn't shutdown before its clients");
+
+  let assertions = [];
+
+  let sleepStarted = false;
+  let sleepComplete = false;
+  Sqlite.shutdown.addBlocker("test_sqlite.js shutdown blocker (sleep)",
+    Task.async(function*() {
+      sleepStarted = true;
+      yield sleep(100);
+      sleepComplete = true;
+    }));
+  assertions.push({name: "sleepStarted", value: () => sleepStarted});
+  assertions.push({name: "sleepComplete", value: () => sleepComplete});
+
+  Sqlite.shutdown.addBlocker("test_sqlite.js shutdown blocker (immediate)",
+    true);
+
+  let dbOpened = false;
+  let dbClosed = false;
+
+  Sqlite.shutdown.addBlocker("test_sqlite.js shutdown blocker (open a connection during shutdown)",
+    Task.async(function*() {
+      let db = yield getDummyDatabase("opened during shutdown");
+      dbOpened = true;
+      db.close().then(
+        () => dbClosed = true
+      ); // Don't wait for this task to complete, Sqlite.jsm must wait automatically
+  }));
+
+  assertions.push({name: "dbOpened", value: () => dbOpened});
+  assertions.push({name: "dbClosed", value: () => dbClosed});
+
+  do_print("Now shutdown Sqlite.jsm synchronously");
+  Services.prefs.setBoolPref("toolkit.asyncshutdown.testing", true);
+  AsyncShutdown.profileBeforeChange._trigger();
+  Services.prefs.clearUserPref("toolkit.asyncshutdown.testing");
+
+
+  for (let {name, value} of assertions) {
+    do_print("Checking: " + name);
+    do_check_true(value());
+  }
+
+  do_print("Ensure that we cannot open databases anymore");
+  let exn;
+  try {
+    yield getDummyDatabase("opened after shutdown");
+  } catch (ex) {
+    exn = ex;
+  }
+  do_check_true(!!exn);
+  do_check_true(exn.message.indexOf("Sqlite.jsm has been shutdown") != -1);
+});
diff --git a/toolkit/modules/tests/xpcshell/test_task.js b/toolkit/modules/tests/xpcshell/test_task.js
new file mode 100644
index 000000000..fdcd56514
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_task.js
@@ -0,0 +1,642 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/**
+ * This file tests the Task.jsm module.
+ */
+
+////////////////////////////////////////////////////////////////////////////////
+/// Globals
+
+var Cc = Components.classes;
+var Ci = Components.interfaces;
+var Cu = Components.utils;
+var Cr = Components.results;
+
+Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+
+XPCOMUtils.defineLazyModuleGetter(this, "Promise",
+                                  "resource://gre/modules/Promise.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "Services",
+                                  "resource://gre/modules/Services.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "Task",
+                                  "resource://gre/modules/Task.jsm");
+
+/**
+ * Returns a promise that will be resolved with the given value, when an event
+ * posted on the event loop of the main thread is processed.
+ */
+function promiseResolvedLater(aValue) {
+  let deferred = Promise.defer();
+  Services.tm.mainThread.dispatch(() => deferred.resolve(aValue),
+                                  Ci.nsIThread.DISPATCH_NORMAL);
+  return deferred.promise;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+/// Tests
+
+function run_test()
+{
+  run_next_test();
+}
+
+add_test(function test_normal()
+{
+  Task.spawn(function () {
+    let result = yield Promise.resolve("Value");
+    for (let i = 0; i < 3; i++) {
+      result += yield promiseResolvedLater("!");
+    }
+    throw new Task.Result("Task result: " + result);
+  }).then(function (result) {
+    do_check_eq("Task result: Value!!!", result);
+    run_next_test();
+  }, function (ex) {
+    do_throw("Unexpected error: " + ex);
+  });
+});
+
+add_test(function test_exceptions()
+{
+  Task.spawn(function () {
+    try {
+      yield Promise.reject("Rejection result by promise.");
+      do_throw("Exception expected because the promise was rejected.");
+    } catch (ex) {
+      // We catch this exception now, we will throw a different one later.
+      do_check_eq("Rejection result by promise.", ex);
+    }
+    throw new Error("Exception uncaught by task.");
+  }).then(function (result) {
+    do_throw("Unexpected success!");
+  }, function (ex) {
+    do_check_eq("Exception uncaught by task.", ex.message);
+    run_next_test();
+  });
+});
+
+add_test(function test_recursion()
+{
+  function task_fibonacci(n) {
+    throw new Task.Result(n < 2 ? n : (yield task_fibonacci(n - 1)) +
+                                      (yield task_fibonacci(n - 2)));
+  };
+
+  Task.spawn(task_fibonacci(6)).then(function (result) {
+    do_check_eq(8, result);
+    run_next_test();
+  }, function (ex) {
+    do_throw("Unexpected error: " + ex);
+  });
+});
+
+add_test(function test_spawn_primitive()
+{
+  function fibonacci(n) {
+    return n < 2 ? n : fibonacci(n - 1) + fibonacci(n - 2);
+  };
+
+  // Polymorphism between task and non-task functions (see "test_recursion").
+  Task.spawn(fibonacci(6)).then(function (result) {
+    do_check_eq(8, result);
+    run_next_test();
+  }, function (ex) {
+    do_throw("Unexpected error: " + ex);
+  });
+});
+
+add_test(function test_spawn_function()
+{
+  Task.spawn(function () {
+    return "This is not a generator.";
+  }).then(function (result) {
+    do_check_eq("This is not a generator.", result);
+    run_next_test();
+  }, function (ex) {
+    do_throw("Unexpected error: " + ex);
+  });
+});
+
+add_test(function test_spawn_function_this()
+{
+  Task.spawn(function () {
+    return this;
+  }).then(function (result) {
+    // Since the task function wasn't defined in strict mode, its "this" object
+    // should be the same as the "this" object in this function, i.e. the global
+    // object.
+    do_check_eq(result, this);
+    run_next_test();
+  }, function (ex) {
+    do_throw("Unexpected error: " + ex);
+  });
+});
+
+add_test(function test_spawn_function_this_strict()
+{
+  "use strict";
+  Task.spawn(function () {
+    return this;
+  }).then(function (result) {
+    // Since the task function was defined in strict mode, its "this" object
+    // should be undefined.
+    do_check_eq(typeof(result), "undefined");
+    run_next_test();
+  }, function (ex) {
+    do_throw("Unexpected error: " + ex);
+  });
+});
+
+add_test(function test_spawn_function_returning_promise()
+{
+  Task.spawn(function () {
+    return promiseResolvedLater("Resolution value.");
+  }).then(function (result) {
+    do_check_eq("Resolution value.", result);
+    run_next_test();
+  }, function (ex) {
+    do_throw("Unexpected error: " + ex);
+  });
+});
+
+add_test(function test_spawn_function_exceptions()
+{
+  Task.spawn(function () {
+    throw new Error("Exception uncaught by task.");
+  }).then(function (result) {
+    do_throw("Unexpected success!");
+  }, function (ex) {
+    do_check_eq("Exception uncaught by task.", ex.message);
+    run_next_test();
+  });
+});
+
+add_test(function test_spawn_function_taskresult()
+{
+  Task.spawn(function () {
+    throw new Task.Result("Task result");
+  }).then(function (result) {
+    do_check_eq("Task result", result);
+    run_next_test();
+  }, function (ex) {
+    do_throw("Unexpected error: " + ex);
+  });
+});
+
+add_test(function test_yielded_undefined()
+{
+  Task.spawn(function () {
+    yield;
+    throw new Task.Result("We continued correctly.");
+  }).then(function (result) {
+    do_check_eq("We continued correctly.", result);
+    run_next_test();
+  }, function (ex) {
+    do_throw("Unexpected error: " + ex);
+  });
+});
+
+add_test(function test_yielded_primitive()
+{
+  Task.spawn(function () {
+    throw new Task.Result("Primitive " + (yield "value."));
+  }).then(function (result) {
+    do_check_eq("Primitive value.", result);
+    run_next_test();
+  }, function (ex) {
+    do_throw("Unexpected error: " + ex);
+  });
+});
+
+add_test(function test_star_normal()
+{
+  Task.spawn(function* () {
+    let result = yield Promise.resolve("Value");
+    for (let i = 0; i < 3; i++) {
+      result += yield promiseResolvedLater("!");
+    }
+    return "Task result: " + result;
+  }).then(function (result) {
+    do_check_eq("Task result: Value!!!", result);
+    run_next_test();
+  }, function (ex) {
+    do_throw("Unexpected error: " + ex);
+  });
+});
+
+add_test(function test_star_exceptions()
+{
+  Task.spawn(function* () {
+    try {
+      yield Promise.reject("Rejection result by promise.");
+      do_throw("Exception expected because the promise was rejected.");
+    } catch (ex) {
+      // We catch this exception now, we will throw a different one later.
+      do_check_eq("Rejection result by promise.", ex);
+    }
+    throw new Error("Exception uncaught by task.");
+  }).then(function (result) {
+    do_throw("Unexpected success!");
+  }, function (ex) {
+    do_check_eq("Exception uncaught by task.", ex.message);
+    run_next_test();
+  });
+});
+
+add_test(function test_star_recursion()
+{
+  function* task_fibonacci(n) {
+    return n < 2 ? n : (yield task_fibonacci(n - 1)) +
+                       (yield task_fibonacci(n - 2));
+  };
+
+  Task.spawn(task_fibonacci(6)).then(function (result) {
+    do_check_eq(8, result);
+    run_next_test();
+  }, function (ex) {
+    do_throw("Unexpected error: " + ex);
+  });
+});
+
+add_test(function test_mixed_legacy_and_star()
+{
+  Task.spawn(function* () {
+    return yield (function() {
+      throw new Task.Result(yield 5);
+    })();
+  }).then(function (result) {
+    do_check_eq(5, result);
+    run_next_test();
+  }, function (ex) {
+    do_throw("Unexpected error: " + ex);
+  });
+});
+
+add_test(function test_async_function_from_generator()
+{
+  Task.spawn(function* () {
+    let object = {
+      asyncFunction: Task.async(function* (param) {
+        do_check_eq(this, object);
+        return param;
+      })
+    };
+
+    // Ensure the async function returns a promise that resolves as expected.
+    do_check_eq((yield object.asyncFunction(1)), 1);
+
+    // Ensure a second call to the async function also returns such a promise.
+    do_check_eq((yield object.asyncFunction(3)), 3);
+  }).then(function () {
+    run_next_test();
+  }, function (ex) {
+    do_throw("Unexpected error: " + ex);
+  });
+});
+
+add_test(function test_async_function_from_function()
+{
+  Task.spawn(function* () {
+    return Task.spawn(function* () {
+      let object = {
+        asyncFunction: Task.async(function (param) {
+          do_check_eq(this, object);
+          return param;
+        })
+      };
+
+      // Ensure the async function returns a promise that resolves as expected.
+      do_check_eq((yield object.asyncFunction(5)), 5);
+
+      // Ensure a second call to the async function also returns such a promise.
+      do_check_eq((yield object.asyncFunction(7)), 7);
+    });
+  }).then(function () {
+    run_next_test();
+  }, function (ex) {
+    do_throw("Unexpected error: " + ex);
+  });
+});
+
+add_test(function test_async_function_that_throws_rejects_promise()
+{
+  Task.spawn(function* () {
+    let object = {
+      asyncFunction: Task.async(function* () {
+        throw "Rejected!";
+      })
+    };
+
+    yield object.asyncFunction();
+  }).then(function () {
+    do_throw("unexpected success calling async function that throws error");
+  }, function (ex) {
+    do_check_eq(ex, "Rejected!");
+    run_next_test();
+  });
+});
+
+add_test(function test_async_return_function()
+{
+  Task.spawn(function* () {
+    // Ensure an async function that returns a function resolves to the function
+    // itself instead of calling the function and resolving to its return value.
+    return Task.spawn(function* () {
+      let returnValue = function () {
+        return "These aren't the droids you're looking for.";
+      };
+
+      let asyncFunction = Task.async(function () {
+        return returnValue;
+      });
+
+      do_check_eq((yield asyncFunction()), returnValue);
+    });
+  }).then(function () {
+    run_next_test();
+  }, function (ex) {
+    do_throw("Unexpected error: " + ex);
+  });
+});
+
+add_test(function test_async_throw_argument_not_function()
+{
+  Task.spawn(function* () {
+    // Ensure Task.async throws if its aTask argument is not a function.
+    Assert.throws(() => Task.async("not a function"),
+                  /aTask argument must be a function/);
+  }).then(function () {
+    run_next_test();
+  }, function (ex) {
+    do_throw("Unexpected error: " + ex);
+  });
+});
+
+add_test(function test_async_throw_on_function_in_place_of_promise()
+{
+  Task.spawn(function* () {
+    // Ensure Task.spawn throws if passed an async function.
+    Assert.throws(() => Task.spawn(Task.async(function* () {})),
+                  /Cannot use an async function in place of a promise/);
+  }).then(function () {
+    run_next_test();
+  }, function (ex) {
+    do_throw("Unexpected error: " + ex);
+  });
+});
+
+
+////////////////// Test rewriting of stack traces
+
+// Backup Task.Debuggin.maintainStack.
+// Will be restored by `exit_stack_tests`.
+var maintainStack;
+add_test(function enter_stack_tests() {
+  maintainStack = Task.Debugging.maintainStack;
+  Task.Debugging.maintainStack = true;
+  run_next_test();
+});
+
+
+/**
+ * Ensure that a list of frames appear in a stack, in the right order
+ */
+function do_check_rewritten_stack(frames, ex) {
+  do_print("Checking that the expected frames appear in the right order");
+  do_print(frames.join(", "));
+  let stack = ex.stack;
+  do_print(stack);
+
+  let framesFound = 0;
+  let lineNumber = 0;
+  let reLine = /([^\r\n])+/g;
+  let match;
+  while (framesFound < frames.length && (match = reLine.exec(stack))) {
+    let line = match[0];
+    let frame = frames[framesFound];
+    do_print("Searching for " + frame + " in line " + line);
+    if (line.indexOf(frame) != -1) {
+      do_print("Found " + frame);
+      ++framesFound;
+    } else {
+      do_print("Didn't find " + frame);
+    }
+  }
+
+  if (framesFound >= frames.length) {
+    return;
+  }
+  do_throw("Did not find: " + frames.slice(framesFound).join(", ") +
+           " in " + stack.substr(reLine.lastIndex));
+
+  do_print("Ensuring that we have removed Task.jsm, Promise.jsm");
+  do_check_true(stack.indexOf("Task.jsm") == -1);
+  do_check_true(stack.indexOf("Promise.jsm") == -1);
+  do_check_true(stack.indexOf("Promise-backend.js") == -1);
+}
+
+
+// Test that we get an acceptable rewritten stack when we launch
+// an error in a Task.spawn.
+add_test(function test_spawn_throw_stack() {
+  Task.spawn(function* task_spawn_throw_stack() {
+    for (let i = 0; i < 5; ++i) {
+      yield Promise.resolve(); // Without stack rewrite, this would lose valuable information
+    }
+    throw new Error("BOOM");
+  }).then(do_throw, function(ex) {
+    do_check_rewritten_stack(["task_spawn_throw_stack",
+                              "test_spawn_throw_stack"],
+                             ex);
+    run_next_test();
+  });
+});
+
+// Test that we get an acceptable rewritten stack when we yield
+// a rejection in a Task.spawn.
+add_test(function test_spawn_yield_reject_stack() {
+  Task.spawn(function* task_spawn_yield_reject_stack() {
+    for (let i = 0; i < 5; ++i) {
+      yield Promise.resolve(); // Without stack rewrite, this would lose valuable information
+    }
+    yield Promise.reject(new Error("BOOM"));
+  }).then(do_throw, function(ex) {
+    do_check_rewritten_stack(["task_spawn_yield_reject_stack",
+                              "test_spawn_yield_reject_stack"],
+                              ex);
+    run_next_test();
+  });
+});
+
+// Test that we get an acceptable rewritten stack when we launch
+// an error in a Task.async function.
+add_test(function test_async_function_throw_stack() {
+  let task_async_function_throw_stack = Task.async(function*() {
+    for (let i = 0; i < 5; ++i) {
+      yield Promise.resolve(); // Without stack rewrite, this would lose valuable information
+    }
+    throw new Error("BOOM");
+  })().then(do_throw, function(ex) {
+    do_check_rewritten_stack(["task_async_function_throw_stack",
+                              "test_async_function_throw_stack"],
+                             ex);
+    run_next_test();
+  });
+});
+
+// Test that we get an acceptable rewritten stack when we launch
+// an error in a Task.async function.
+add_test(function test_async_function_yield_reject_stack() {
+  let task_async_function_yield_reject_stack = Task.async(function*() {
+    for (let i = 0; i < 5; ++i) {
+      yield Promise.resolve(); // Without stack rewrite, this would lose valuable information
+    }
+    yield Promise.reject(new Error("BOOM"));
+  })().then(do_throw, function(ex) {
+    do_check_rewritten_stack(["task_async_function_yield_reject_stack",
+                              "test_async_function_yield_reject_stack"],
+                              ex);
+    run_next_test();
+  });
+});
+
+// Test that we get an acceptable rewritten stack when we launch
+// an error in a Task.async function.
+add_test(function test_async_method_throw_stack() {
+  let object = {
+   task_async_method_throw_stack: Task.async(function*() {
+    for (let i = 0; i < 5; ++i) {
+      yield Promise.resolve(); // Without stack rewrite, this would lose valuable information
+    }
+    throw new Error("BOOM");
+   })
+  };
+  object.task_async_method_throw_stack().then(do_throw, function(ex) {
+    do_check_rewritten_stack(["task_async_method_throw_stack",
+                              "test_async_method_throw_stack"],
+                             ex);
+    run_next_test();
+  });
+});
+
+// Test that we get an acceptable rewritten stack when we launch
+// an error in a Task.async function.
+add_test(function test_async_method_yield_reject_stack() {
+  let object = {
+    task_async_method_yield_reject_stack: Task.async(function*() {
+      for (let i = 0; i < 5; ++i) {
+        yield Promise.resolve(); // Without stack rewrite, this would lose valuable information
+      }
+      yield Promise.reject(new Error("BOOM"));
+    })
+  };
+  object.task_async_method_yield_reject_stack().then(do_throw, function(ex) {
+    do_check_rewritten_stack(["task_async_method_yield_reject_stack",
+                              "test_async_method_yield_reject_stack"],
+                              ex);
+    run_next_test();
+  });
+});
+
+// Test that two tasks whose execution takes place interleaved do not capture each other's stack.
+add_test(function test_throw_stack_do_not_capture_the_wrong_task() {
+  for (let iter_a of [3, 4, 5]) { // Vary the interleaving
+    for (let iter_b of [3, 4, 5]) {
+      Task.spawn(function* task_a() {
+        for (let i = 0; i < iter_a; ++i) {
+          yield Promise.resolve();
+        }
+        throw new Error("BOOM");
+      }).then(do_throw, function(ex) {
+        do_check_rewritten_stack(["task_a",
+                                  "test_throw_stack_do_not_capture_the_wrong_task"],
+                                  ex);
+        do_check_true(!ex.stack.includes("task_b"));
+        run_next_test();
+      });
+      Task.spawn(function* task_b() {
+        for (let i = 0; i < iter_b; ++i) {
+          yield Promise.resolve();
+        }
+      });
+    }
+  }
+});
+
+// Put things together
+add_test(function test_throw_complex_stack()
+{
+  // Setup the following stack:
+  //    inner_method()
+  //    task_3()
+  //    task_2()
+  //    task_1()
+  //    function_3()
+  //    function_2()
+  //    function_1()
+  //    test_throw_complex_stack()
+  (function function_1() {
+    return (function function_2() {
+      return (function function_3() {
+        return Task.spawn(function* task_1() {
+          yield Promise.resolve();
+          try {
+            yield Task.spawn(function* task_2() {
+              yield Promise.resolve();
+              yield Task.spawn(function* task_3() {
+                yield Promise.resolve();
+                  let inner_object = {
+                    inner_method: Task.async(function*() {
+                      throw new Error("BOOM");
+                    })
+                  };
+                  yield Promise.resolve();
+                  yield inner_object.inner_method();
+                });
+              });
+            } catch (ex) {
+              yield Promise.resolve();
+              throw ex;
+            }
+          });
+        })();
+      })();
+  })().then(
+    () => do_throw("Shouldn't have succeeded"),
+    (ex) => {
+      let expect = ["inner_method",
+        "task_3",
+        "task_2",
+        "task_1",
+        "function_3",
+        "function_2",
+        "function_1",
+        "test_throw_complex_stack"];
+      do_check_rewritten_stack(expect, ex);
+
+      run_next_test();
+    });
+});
+
+add_test(function test_without_maintainStack() {
+  do_print("Calling generateReadableStack without a Task");
+  Task.Debugging.generateReadableStack(new Error("Not a real error"));
+
+  Task.Debugging.maintainStack = false;
+
+  do_print("Calling generateReadableStack with neither a Task nor maintainStack");
+  Task.Debugging.generateReadableStack(new Error("Not a real error"));
+
+  do_print("Calling generateReadableStack without maintainStack");
+  Task.spawn(function*() {
+    Task.Debugging.generateReadableStack(new Error("Not a real error"));
+    run_next_test();
+  });
+});
+
+add_test(function exit_stack_tests() {
+  Task.Debugging.maintainStack = maintainStack;
+  run_next_test();
+});
+
diff --git a/toolkit/modules/tests/xpcshell/test_timer.js b/toolkit/modules/tests/xpcshell/test_timer.js
new file mode 100644
index 000000000..57e300663
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_timer.js
@@ -0,0 +1,57 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Tests exports from Timer.jsm
+
+var imported = {};
+Components.utils.import("resource://gre/modules/Timer.jsm", imported);
+
+function run_test() {
+  run_next_test();
+}
+
+add_task(function* test_setTimeout() {
+  let timeout1 = imported.setTimeout(() => do_throw("Should not be called"), 100);
+  do_check_eq(typeof timeout1, "number", "setTimeout returns a number");
+  do_check_true(timeout1 > 0, "setTimeout returns a positive number");
+
+  imported.clearTimeout(timeout1);
+
+  yield new Promise((resolve) => {
+    let timeout2 = imported.setTimeout((param1, param2) => {
+      do_check_true(true, "Should be called");
+      do_check_eq(param1, 5, "first parameter is correct");
+      do_check_eq(param2, "test", "second parameter is correct");
+      resolve();
+    }, 100, 5, "test");
+
+    do_check_eq(typeof timeout2, "number", "setTimeout returns a number");
+    do_check_true(timeout2 > 0, "setTimeout returns a positive number");
+    do_check_neq(timeout1, timeout2, "Calling setTimeout again returns a different value");
+  });
+});
+
+add_task(function* test_setInterval() {
+  let interval1 = imported.setInterval(() => do_throw("Should not be called!"), 100);
+  do_check_eq(typeof interval1, "number", "setInterval returns a number");
+  do_check_true(interval1 > 0, "setTimeout returns a positive number");
+
+  imported.clearInterval(interval1);
+
+  const EXPECTED_CALLS = 5;
+  let calls = 0;
+
+  yield new Promise((resolve) => {
+    let interval2 = imported.setInterval((param1, param2) => {
+      do_check_true(true, "Should be called");
+      do_check_eq(param1, 15, "first parameter is correct");
+      do_check_eq(param2, "hola", "second parameter is correct");
+      if (calls >= EXPECTED_CALLS) {
+        resolve();
+      }
+      calls++;
+    }, 100, 15, "hola");
+  });
+});
diff --git a/toolkit/modules/tests/xpcshell/test_web_channel.js b/toolkit/modules/tests/xpcshell/test_web_channel.js
new file mode 100644
index 000000000..05f1bc03d
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_web_channel.js
@@ -0,0 +1,149 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+var Cu = Components.utils;
+
+Cu.import("resource://gre/modules/Services.jsm");
+Cu.import("resource://gre/modules/WebChannel.jsm");
+
+const ERROR_ID_ORIGIN_REQUIRED = "WebChannel id and originOrPermission are required.";
+const VALID_WEB_CHANNEL_ID = "id";
+const URL_STRING = "http://example.com";
+const VALID_WEB_CHANNEL_ORIGIN = Services.io.newURI(URL_STRING, null, null);
+const TEST_PERMISSION_NAME = "test-webchannel-permissions";
+
+var MockWebChannelBroker = {
+  _channelMap: new Map(),
+  registerChannel: function(channel) {
+    if (!this._channelMap.has(channel)) {
+      this._channelMap.set(channel);
+    }
+  },
+  unregisterChannel: function (channelToRemove) {
+    this._channelMap.delete(channelToRemove)
+  }
+};
+
+function run_test() {
+  run_next_test();
+}
+
+/**
+ * Web channel tests
+ */
+
+/**
+ * Test channel listening with originOrPermission being an nsIURI.
+ */
+add_task(function test_web_channel_listen() {
+  return new Promise((resolve, reject) => {
+    let channel = new WebChannel(VALID_WEB_CHANNEL_ID, VALID_WEB_CHANNEL_ORIGIN, {
+      broker: MockWebChannelBroker
+    });
+    let delivered = 0;
+    do_check_eq(channel.id, VALID_WEB_CHANNEL_ID);
+    do_check_eq(channel._originOrPermission.spec, VALID_WEB_CHANNEL_ORIGIN.spec);
+    do_check_eq(channel._deliverCallback, null);
+
+    channel.listen(function(id, message, target) {
+      do_check_eq(id, VALID_WEB_CHANNEL_ID);
+      do_check_true(message);
+      do_check_true(message.command);
+      do_check_true(target.sender);
+      delivered++;
+      // 2 messages should be delivered
+      if (delivered === 2) {
+        channel.stopListening();
+        do_check_eq(channel._deliverCallback, null);
+        resolve();
+      }
+    });
+
+    // send two messages
+    channel.deliver({
+      id: VALID_WEB_CHANNEL_ID,
+      message: {
+        command: "one"
+      }
+    }, { sender: true });
+
+    channel.deliver({
+      id: VALID_WEB_CHANNEL_ID,
+      message: {
+        command: "two"
+      }
+    }, { sender: true });
+  });
+});
+
+/**
+ * Test channel listening with originOrPermission being a permission string.
+ */
+add_task(function test_web_channel_listen_permission() {
+  return new Promise((resolve, reject) => {
+    // add a new permission
+    Services.perms.add(VALID_WEB_CHANNEL_ORIGIN, TEST_PERMISSION_NAME, Services.perms.ALLOW_ACTION);
+    do_register_cleanup(() => Services.perms.remove(VALID_WEB_CHANNEL_ORIGIN, TEST_PERMISSION_NAME));
+    let channel = new WebChannel(VALID_WEB_CHANNEL_ID, TEST_PERMISSION_NAME, {
+      broker: MockWebChannelBroker
+    });
+    let delivered = 0;
+    do_check_eq(channel.id, VALID_WEB_CHANNEL_ID);
+    do_check_eq(channel._originOrPermission, TEST_PERMISSION_NAME);
+    do_check_eq(channel._deliverCallback, null);
+
+    channel.listen(function(id, message, target) {
+      do_check_eq(id, VALID_WEB_CHANNEL_ID);
+      do_check_true(message);
+      do_check_true(message.command);
+      do_check_true(target.sender);
+      delivered++;
+      // 2 messages should be delivered
+      if (delivered === 2) {
+        channel.stopListening();
+        do_check_eq(channel._deliverCallback, null);
+        resolve();
+      }
+    });
+
+    // send two messages
+    channel.deliver({
+      id: VALID_WEB_CHANNEL_ID,
+      message: {
+        command: "one"
+      }
+    }, { sender: true });
+
+    channel.deliver({
+      id: VALID_WEB_CHANNEL_ID,
+      message: {
+        command: "two"
+      }
+    }, { sender: true });
+  });
+});
+
+
+/**
+ * Test constructor
+ */
+add_test(function test_web_channel_constructor() {
+  do_check_eq(constructorTester(), ERROR_ID_ORIGIN_REQUIRED);
+  do_check_eq(constructorTester(undefined), ERROR_ID_ORIGIN_REQUIRED);
+  do_check_eq(constructorTester(undefined, VALID_WEB_CHANNEL_ORIGIN), ERROR_ID_ORIGIN_REQUIRED);
+  do_check_eq(constructorTester(VALID_WEB_CHANNEL_ID, undefined), ERROR_ID_ORIGIN_REQUIRED);
+  do_check_false(constructorTester(VALID_WEB_CHANNEL_ID, VALID_WEB_CHANNEL_ORIGIN));
+
+  run_next_test();
+});
+
+function constructorTester(id, origin) {
+  try {
+    new WebChannel(id, origin);
+  } catch (e) {
+    return e.message;
+  }
+  return false;
+}
diff --git a/toolkit/modules/tests/xpcshell/test_web_channel_broker.js b/toolkit/modules/tests/xpcshell/test_web_channel_broker.js
new file mode 100644
index 000000000..132597c20
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_web_channel_broker.js
@@ -0,0 +1,88 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+var Cu = Components.utils;
+
+Cu.import("resource://gre/modules/Services.jsm");
+Cu.import("resource://gre/modules/WebChannel.jsm");
+
+const VALID_WEB_CHANNEL_ID = "id";
+const URL_STRING = "http://example.com";
+const VALID_WEB_CHANNEL_ORIGIN = Services.io.newURI(URL_STRING, null, null);
+
+function run_test() {
+  run_next_test();
+}
+
+/**
+ * Test WebChannelBroker channel map
+ */
+add_test(function test_web_channel_broker_channel_map() {
+  let channel = {};
+  let channel2 = {};
+
+  do_check_eq(WebChannelBroker._channelMap.size, 0);
+  do_check_false(WebChannelBroker._messageListenerAttached);
+
+  // make sure _channelMap works correctly
+  WebChannelBroker.registerChannel(channel);
+  do_check_eq(WebChannelBroker._channelMap.size, 1);
+  do_check_true(WebChannelBroker._messageListenerAttached);
+
+  WebChannelBroker.registerChannel(channel2);
+  do_check_eq(WebChannelBroker._channelMap.size, 2);
+
+  WebChannelBroker.unregisterChannel(channel);
+  do_check_eq(WebChannelBroker._channelMap.size, 1);
+
+  // make sure the correct channel is unregistered
+  do_check_false(WebChannelBroker._channelMap.has(channel));
+  do_check_true(WebChannelBroker._channelMap.has(channel2));
+
+  WebChannelBroker.unregisterChannel(channel2);
+  do_check_eq(WebChannelBroker._channelMap.size, 0);
+
+  run_next_test();
+});
+
+
+/**
+ * Test WebChannelBroker _listener test
+ */
+add_task(function test_web_channel_broker_listener() {
+  return new Promise((resolve, reject) => {
+    var channel = {
+      id: VALID_WEB_CHANNEL_ID,
+      _originCheckCallback: requestPrincipal => {
+        return VALID_WEB_CHANNEL_ORIGIN.prePath === requestPrincipal.origin;
+      },
+      deliver: function(data, sender) {
+        do_check_eq(data.id, VALID_WEB_CHANNEL_ID);
+        do_check_eq(data.message.command, "hello");
+        do_check_neq(sender, undefined);
+        WebChannelBroker.unregisterChannel(channel);
+        resolve();
+      }
+    };
+
+    WebChannelBroker.registerChannel(channel);
+
+    var mockEvent = {
+      data: {
+        id: VALID_WEB_CHANNEL_ID,
+        message: {
+          command: "hello"
+        }
+      },
+      principal: {
+        origin: URL_STRING
+      },
+      objects: {
+      },
+    };
+
+    WebChannelBroker._listener(mockEvent);
+  });
+});
diff --git a/toolkit/modules/tests/xpcshell/xpcshell.ini b/toolkit/modules/tests/xpcshell/xpcshell.ini
new file mode 100644
index 000000000..65d7c45e9
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/xpcshell.ini
@@ -0,0 +1,75 @@
+[DEFAULT]
+head =
+tail =
+support-files =
+  propertyLists/bug710259_propertyListBinary.plist
+  propertyLists/bug710259_propertyListXML.plist
+  chromeappsstore.sqlite
+  zips/zen.zip
+
+[test_BinarySearch.js]
+skip-if = toolkit == 'android'
+[test_CanonicalJSON.js]
+[test_client_id.js]
+skip-if = toolkit == 'android'
+[test_Color.js]
+[test_DeferredTask.js]
+skip-if = toolkit == 'android'
+[test_FileUtils.js]
+skip-if = toolkit == 'android'
+[test_FinderIterator.js]
+[test_GMPInstallManager.js]
+skip-if = toolkit == 'android'
+[test_Http.js]
+skip-if = toolkit == 'android'
+[test_Integration.js]
+[test_jsesc.js]
+skip-if = toolkit == 'android'
+[test_JSONFile.js]
+skip-if = toolkit == 'android'
+[test_Log.js]
+skip-if = toolkit == 'android'
+[test_MatchPattern.js]
+skip-if = toolkit == 'android'
+[test_MatchGlobs.js]
+skip-if = toolkit == 'android'
+[test_MatchURLFilters.js]
+skip-if = toolkit == 'android'
+[test_NewTabUtils.js]
+skip-if = toolkit == 'android'
+[test_ObjectUtils.js]
+skip-if = toolkit == 'android'
+[test_ObjectUtils_strict.js]
+skip-if = toolkit == 'android'
+[test_PermissionsUtils.js]
+skip-if = toolkit == 'android'
+[test_Preferences.js]
+skip-if = toolkit == 'android'
+[test_Promise.js]
+skip-if = toolkit == 'android'
+[test_PromiseUtils.js]
+skip-if = toolkit == 'android'
+[test_propertyListsUtils.js]
+skip-if = toolkit == 'android'
+[test_readCertPrefs.js]
+skip-if = toolkit == 'android'
+[test_Services.js]
+skip-if = toolkit == 'android'
+[test_session_recorder.js]
+skip-if = toolkit == 'android'
+[test_sqlite.js]
+skip-if = toolkit == 'android'
+[test_sqlite_shutdown.js]
+skip-if = toolkit == 'android'
+[test_task.js]
+skip-if = toolkit == 'android'
+[test_timer.js]
+skip-if = toolkit == 'android'
+[test_UpdateUtils_url.js]
+[test_UpdateUtils_updatechannel.js]
+[test_web_channel.js]
+[test_web_channel_broker.js]
+[test_ZipUtils.js]
+skip-if = toolkit == 'android'
+[test_Log_stackTrace.js]
+[test_servicerequest_xhr.js]
diff --git a/toolkit/modules/tests/xpcshell/zips/zen.zip b/toolkit/modules/tests/xpcshell/zips/zen.zip
new file mode 100644
index 000000000..475624793
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/zips/zen.zip