Add m-esr52 at 52.6.0

12 files changed, 1288 insertions, 0 deletions

diff --git a/toolkit/components/contentprefs/tests/unit/.eslintrc.js b/toolkit/components/contentprefs/tests/unit/.eslintrc.js
new file mode 100644
index 000000000..d35787cd2
--- /dev/null
+++ b/toolkit/components/contentprefs/tests/unit/.eslintrc.js
@@ -0,0 +1,7 @@
+"use strict";
+
+module.exports = {
+  "extends": [
+    "../../../../../testing/xpcshell/xpcshell.eslintrc.js"
+  ]
+};
diff --git a/toolkit/components/contentprefs/tests/unit/head_contentPrefs.js b/toolkit/components/contentprefs/tests/unit/head_contentPrefs.js
new file mode 100644
index 000000000..84ca1bebf
--- /dev/null
+++ b/toolkit/components/contentprefs/tests/unit/head_contentPrefs.js
@@ -0,0 +1,162 @@
+/* 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/. */
+
+// Inspired by the Places infrastructure in head_bookmarks.js
+
+var Cc = Components.classes;
+var Ci = Components.interfaces;
+var Cr = Components.results;
+var Cu = Components.utils;
+
+Cu.import('resource://gre/modules/Services.jsm');
+Cu.import('resource://gre/modules/ContentPrefInstance.jsm');
+
+const CONTENT_PREFS_DB_FILENAME = "content-prefs.sqlite";
+const CONTENT_PREFS_BACKUP_DB_FILENAME = "content-prefs.sqlite.corrupt";
+
+var ContentPrefTest = {
+  // Convenience Getters
+
+  __dirSvc: null,
+  get _dirSvc() {
+    if (!this.__dirSvc)
+      this.__dirSvc = Cc["@mozilla.org/file/directory_service;1"].
+                      getService(Ci.nsIProperties);
+    return this.__dirSvc;
+  },
+
+  __consoleSvc: null,
+  get _consoleSvc() {
+    if (!this.__consoleSvc)
+      this.__consoleSvc = Cc["@mozilla.org/consoleservice;1"].
+                          getService(Ci.nsIConsoleService);
+    return this.__consoleSvc;
+  },
+
+  __ioSvc: null,
+  get _ioSvc() {
+    if (!this.__ioSvc)
+      this.__ioSvc = Cc["@mozilla.org/network/io-service;1"].
+                     getService(Ci.nsIIOService);
+    return this.__ioSvc;
+  },
+
+
+  // nsISupports
+
+  interfaces: [Ci.nsIDirectoryServiceProvider, Ci.nsISupports],
+
+  QueryInterface: function ContentPrefTest_QueryInterface(iid) {
+    if (!this.interfaces.some( function(v) { return iid.equals(v) } ))
+      throw Cr.NS_ERROR_NO_INTERFACE;
+    return this;
+  },
+
+
+  // nsIDirectoryServiceProvider
+
+  getFile: function ContentPrefTest_getFile(property, persistent) {
+    persistent.value = true;
+
+    if (property == "ProfD")
+      return this._dirSvc.get("CurProcD", Ci.nsIFile);
+
+    // This causes extraneous errors to show up in the log when the directory
+    // service asks us first for CurProcD and MozBinD.  I wish there was a way
+    // to suppress those errors.
+    throw Cr.NS_ERROR_FAILURE;
+  },
+
+
+  // Utilities
+
+  getURI: function ContentPrefTest_getURI(spec) {
+    return this._ioSvc.newURI(spec, null, null);
+  },
+
+  /**
+   * Get the profile directory.
+   */
+  getProfileDir: function ContentPrefTest_getProfileDir() {
+    // do_get_profile can be only called from a parent process
+    if (runningInParent) {
+      return do_get_profile();
+    }
+    // if running in a content process, this just returns the path
+    // profile was initialized in the ipc head file
+    let env = Components.classes["@mozilla.org/process/environment;1"]
+                        .getService(Components.interfaces.nsIEnvironment);
+    // the python harness sets this in the environment for us
+    let profd = env.get("XPCSHELL_TEST_PROFILE_DIR");
+    let file = Components.classes["@mozilla.org/file/local;1"]
+                         .createInstance(Components.interfaces.nsILocalFile);
+    file.initWithPath(profd);
+    return file;
+  },
+
+  /**
+   * Delete the content pref service's persistent datastore.  We do this before
+   * and after running tests to make sure we start from scratch each time. We
+   * also do it during the database creation, schema migration, and backup tests.
+   */
+  deleteDatabase: function ContentPrefTest_deleteDatabase() {
+    var file = this.getProfileDir();
+    file.append(CONTENT_PREFS_DB_FILENAME);
+    if (file.exists())
+      try { file.remove(false); } catch (e) { /* stupid windows box */ }
+    return file;
+  },
+
+  /**
+   * Delete the backup of the content pref service's persistent datastore.
+   * We do this during the database creation, schema migration, and backup tests.
+   */
+  deleteBackupDatabase: function ContentPrefTest_deleteBackupDatabase() {
+    var file = this.getProfileDir();
+    file.append(CONTENT_PREFS_BACKUP_DB_FILENAME);
+    if (file.exists())
+      file.remove(false);
+    return file;
+  },
+
+  /**
+   * Log a message to the console and the test log.
+   */
+  log: function ContentPrefTest_log(message) {
+    message = "*** ContentPrefTest: " + message;
+    this._consoleSvc.logStringMessage(message);
+    print(message);
+  }
+
+};
+
+var gInPrivateBrowsing = false;
+function enterPBMode() {
+  gInPrivateBrowsing = true;
+}
+function exitPBMode() {
+  gInPrivateBrowsing = false;
+  Services.obs.notifyObservers(null, "last-pb-context-exited", null);
+}
+
+ContentPrefTest.deleteDatabase();
+
+function inChildProcess() {
+  var appInfo = Cc["@mozilla.org/xre/app-info;1"];
+  if (!appInfo || appInfo.getService(Ci.nsIXULRuntime).processType ==
+      Ci.nsIXULRuntime.PROCESS_TYPE_DEFAULT) {
+    return false;
+  }
+  return true;
+}
+
+// Turn on logging for the content preferences service so we can troubleshoot
+// problems with the tests. Note that we cannot do this in a child process
+// without crashing (but we don't need it anyhow)
+if (!inChildProcess()) {
+  var prefBranch = Cc["@mozilla.org/preferences-service;1"].
+                   getService(Ci.nsIPrefBranch);
+  prefBranch.setBoolPref("browser.preferences.content.log", true);
+}
+
diff --git a/toolkit/components/contentprefs/tests/unit/tail_contentPrefs.js b/toolkit/components/contentprefs/tests/unit/tail_contentPrefs.js
new file mode 100644
index 000000000..f3c95dac8
--- /dev/null
+++ b/toolkit/components/contentprefs/tests/unit/tail_contentPrefs.js
@@ -0,0 +1,6 @@
+/* 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/. */
+
+ContentPrefTest.deleteDatabase();
+ContentPrefTest.__dirSvc = null;
diff --git a/toolkit/components/contentprefs/tests/unit/test_bug248970.js b/toolkit/components/contentprefs/tests/unit/test_bug248970.js
new file mode 100644
index 000000000..5f4aa25c5
--- /dev/null
+++ b/toolkit/components/contentprefs/tests/unit/test_bug248970.js
@@ -0,0 +1,42 @@
+/* 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/. */
+
+function run_test() {
+    let loadContext = { get usePrivateBrowsing() { return gInPrivateBrowsing; } };
+
+    ContentPrefTest.deleteDatabase();
+    var cp = new ContentPrefInstance(loadContext);
+    do_check_neq(cp, null, "Retrieving the content prefs service failed");
+
+    try {
+      const uri1 = ContentPrefTest.getURI("http://www.example.com/");
+      const uri2 = ContentPrefTest.getURI("http://www.anotherexample.com/");
+      const pref_name = "browser.content.full-zoom";
+      const zoomA = 1.5, zoomA_new = 0.8, zoomB = 1.3;
+      // save Zoom-A
+      cp.setPref(uri1, pref_name, zoomA);
+      // make sure Zoom-A is retrievable
+      do_check_eq(cp.getPref(uri1, pref_name), zoomA);
+      // enter private browsing mode
+      enterPBMode();
+      // make sure Zoom-A is retrievable
+      do_check_eq(cp.getPref(uri1, pref_name), zoomA);
+      // save Zoom-B
+      cp.setPref(uri2, pref_name, zoomB);
+      // make sure Zoom-B is retrievable
+      do_check_eq(cp.getPref(uri2, pref_name), zoomB);
+      // update Zoom-A
+      cp.setPref(uri1, pref_name, zoomA_new);
+      // make sure Zoom-A has changed
+      do_check_eq(cp.getPref(uri1, pref_name), zoomA_new);
+      // exit private browsing mode
+      exitPBMode();
+      // make sure Zoom-A change has not persisted
+      do_check_eq(cp.getPref(uri1, pref_name), zoomA);
+      // make sure Zoom-B change has not persisted
+      do_check_eq(cp.hasPref(uri2, pref_name), false);
+    } catch (e) {
+      do_throw("Unexpected exception: " + e);
+    }
+}
diff --git a/toolkit/components/contentprefs/tests/unit/test_bug503971.js b/toolkit/components/contentprefs/tests/unit/test_bug503971.js
new file mode 100644
index 000000000..ccfe1d02b
--- /dev/null
+++ b/toolkit/components/contentprefs/tests/unit/test_bug503971.js
@@ -0,0 +1,35 @@
+/* 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/. */
+
+function run_test() {
+  var cps = new ContentPrefInstance(null);
+
+  var uri = ContentPrefTest.getURI("http://www.example.com/");
+
+  do_check_thrown(function () { cps.setPref(uri, null, 8); });
+  do_check_thrown(function () { cps.hasPref(uri, null); });
+  do_check_thrown(function () { cps.getPref(uri, null); });
+  do_check_thrown(function () { cps.removePref(uri, null); });
+  do_check_thrown(function () { cps.getPrefsByName(null); });
+  do_check_thrown(function () { cps.removePrefsByName(null); });
+
+  do_check_thrown(function () { cps.setPref(uri, "", 21); });
+  do_check_thrown(function () { cps.hasPref(uri, ""); });
+  do_check_thrown(function () { cps.getPref(uri, ""); });
+  do_check_thrown(function () { cps.removePref(uri, ""); });
+  do_check_thrown(function () { cps.getPrefsByName(""); });
+  do_check_thrown(function () { cps.removePrefsByName(""); });
+}
+
+function do_check_thrown (aCallback) {
+  var exThrown = false;
+  try {
+    aCallback();
+    do_throw("NS_ERROR_ILLEGAL_VALUE should have been thrown here");
+  } catch (e) {
+    do_check_eq(e.result, Cr.NS_ERROR_ILLEGAL_VALUE);
+    exThrown = true;
+  }
+  do_check_true(exThrown);
+}
diff --git a/toolkit/components/contentprefs/tests/unit/test_bug679784.js b/toolkit/components/contentprefs/tests/unit/test_bug679784.js
new file mode 100644
index 000000000..97251d87b
--- /dev/null
+++ b/toolkit/components/contentprefs/tests/unit/test_bug679784.js
@@ -0,0 +1,103 @@
+/* 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 prefObserver = {
+    setCalledNum: 0,
+    onContentPrefSet: function(aGroup, aName, aValue) {
+        this.setCalledNum++;
+    },
+    removedCalledNum: 0,
+    onContentPrefRemoved: function(aGroup, aName) {
+        this.removedCalledNum++;
+    }
+};
+
+function run_test() {
+  let loadContext = { get usePrivateBrowsing() { return gInPrivateBrowsing; } };
+
+  var cps = new ContentPrefInstance(loadContext);
+  cps.removeGroupedPrefs();
+
+  var uri = ContentPrefTest.getURI("http://www.example.com/");
+  var group = cps.grouper.group(uri);
+
+  // first, set a pref in normal mode
+  cps.setPref(uri, "value", "foo");
+  cps.setPref(null, "value-global", "foo-global");
+
+  var num;
+  cps.addObserver("value", prefObserver);
+  cps.addObserver("value-global", prefObserver);
+
+  enterPBMode();
+
+  // test setPref
+  num = prefObserver.setCalledNum;
+  cps.setPref(uri, "value", "foo-private-browsing");
+  do_check_eq(cps.hasPref(uri, "value"), true);
+  do_check_eq(cps.getPref(uri, "value"), "foo-private-browsing");
+  do_check_eq(prefObserver.setCalledNum, num + 1);
+
+  num = prefObserver.setCalledNum;
+  cps.setPref(null, "value-global", "foo-private-browsing-global");
+  do_check_eq(cps.hasPref(null, "value-global"), true);
+  do_check_eq(cps.getPref(null, "value-global"), "foo-private-browsing-global");
+  do_check_eq(prefObserver.setCalledNum, num + 1);
+
+  // test removePref
+  num = prefObserver.removedCalledNum;
+  cps.removePref(uri, "value");
+  do_check_eq(cps.hasPref(uri, "value"), true);
+  // fallback to non private mode value
+  do_check_eq(cps.getPref(uri, "value"), "foo");
+  do_check_eq(prefObserver.removedCalledNum, num + 1);
+
+  num = prefObserver.removedCalledNum;
+  cps.removePref(null, "value-global");
+  do_check_eq(cps.hasPref(null, "value-global"), true);
+  // fallback to non private mode value
+  do_check_eq(cps.getPref(null, "value-global"), "foo-global") ;
+  do_check_eq(prefObserver.removedCalledNum, num + 1);
+
+  // test removeGroupedPrefs
+  cps.setPref(uri, "value", "foo-private-browsing");
+  cps.removeGroupedPrefs();
+  do_check_eq(cps.hasPref(uri, "value"), false);
+  do_check_eq(cps.getPref(uri, "value"), undefined);
+
+  cps.setPref(null, "value-global", "foo-private-browsing-global");
+  cps.removeGroupedPrefs();
+  do_check_eq(cps.hasPref(null, "value-global"), true);
+  do_check_eq(cps.getPref(null, "value-global"), "foo-private-browsing-global");
+
+  // test removePrefsByName
+  num = prefObserver.removedCalledNum;
+  cps.setPref(uri, "value", "foo-private-browsing");
+  cps.removePrefsByName("value");
+  do_check_eq(cps.hasPref(uri, "value"), false);
+  do_check_eq(cps.getPref(uri, "value"), undefined);
+  do_check_true(prefObserver.removedCalledNum > num);
+
+  num = prefObserver.removedCalledNum;
+  cps.setPref(null, "value-global", "foo-private-browsing");
+  cps.removePrefsByName("value-global");
+  do_check_eq(cps.hasPref(null, "value-global"), false);
+  do_check_eq(cps.getPref(null, "value-global"), undefined);
+  do_check_true(prefObserver.removedCalledNum > num);
+
+  // test getPrefs
+  cps.setPref(uri, "value", "foo-private-browsing");
+  do_check_eq(cps.getPrefs(uri).getProperty("value"), "foo-private-browsing");
+
+  cps.setPref(null, "value-global", "foo-private-browsing-global");
+  do_check_eq(cps.getPrefs(null).getProperty("value-global"), "foo-private-browsing-global");
+
+  // test getPrefsByName
+  do_check_eq(cps.getPrefsByName("value").getProperty(group), "foo-private-browsing");
+  do_check_eq(cps.getPrefsByName("value-global").getProperty(null), "foo-private-browsing-global");
+
+  cps.removeObserver("value", prefObserver);
+  cps.removeObserver("value-global", prefObserver);
+}
diff --git a/toolkit/components/contentprefs/tests/unit/test_contentPrefs.js b/toolkit/components/contentprefs/tests/unit/test_contentPrefs.js
new file mode 100644
index 000000000..f7e99ea9d
--- /dev/null
+++ b/toolkit/components/contentprefs/tests/unit/test_contentPrefs.js
@@ -0,0 +1,463 @@
+/* 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/. */
+
+function run_test() {
+  // Database Creation, Schema Migration, and Backup
+
+  // Note: in these tests we use createInstance instead of getService
+  // so we can instantiate the service multiple times and make it run
+  // its database initialization code each time.
+
+  // Create a new database.
+  {
+    ContentPrefTest.deleteDatabase();
+
+    // Get the service and make sure it has a ready database connection.
+    let cps = Cc["@mozilla.org/content-pref/service;1"].
+              createInstance(Ci.nsIContentPrefService);
+    do_check_true(cps.DBConnection.connectionReady);
+    cps.DBConnection.close();
+  }
+
+  // Open an existing database.
+  {
+    let dbFile = ContentPrefTest.deleteDatabase();
+
+    let cps = Cc["@mozilla.org/content-pref/service;1"].
+               createInstance(Ci.nsIContentPrefService);
+    cps.DBConnection.close();
+    do_check_true(dbFile.exists());
+
+    // Get the service and make sure it has a ready database connection.
+    cps = Cc["@mozilla.org/content-pref/service;1"].
+          createInstance(Ci.nsIContentPrefService);
+    do_check_true(cps.DBConnection.connectionReady);
+    cps.DBConnection.close();
+  }
+
+  // Open an empty database.
+  {
+    let dbFile = ContentPrefTest.deleteDatabase();
+
+    // Create an empty database.
+    let dbService = Cc["@mozilla.org/storage/service;1"].
+                    getService(Ci.mozIStorageService);
+    let dbConnection = dbService.openDatabase(dbFile);
+    do_check_eq(dbConnection.schemaVersion, 0);
+    dbConnection.close();
+    do_check_true(dbFile.exists());
+
+    // Get the service and make sure it has created the schema.
+    let cps = Cc["@mozilla.org/content-pref/service;1"].
+              createInstance(Ci.nsIContentPrefService);
+    do_check_neq(cps.DBConnection.schemaVersion, 0);
+    cps.DBConnection.close();
+  }
+
+  // Open a corrupted database.
+  {
+    let dbFile = ContentPrefTest.deleteDatabase();
+    let backupDBFile = ContentPrefTest.deleteBackupDatabase();
+
+    // Create a corrupted database.
+    let foStream = Cc["@mozilla.org/network/file-output-stream;1"].
+                   createInstance(Ci.nsIFileOutputStream);
+    foStream.init(dbFile, 0x02 | 0x08 | 0x20, 0o666, 0);
+    let garbageData = "garbage that makes SQLite think the file is corrupted";
+    foStream.write(garbageData, garbageData.length);
+    foStream.close();
+
+    // Get the service and make sure it backs up and recreates the database.
+    let cps = Cc["@mozilla.org/content-pref/service;1"].
+              createInstance(Ci.nsIContentPrefService);
+    do_check_true(backupDBFile.exists());
+    do_check_true(cps.DBConnection.connectionReady);
+
+    cps.DBConnection.close();
+  }
+
+  // Open a database with a corrupted schema.
+  {
+    let dbFile = ContentPrefTest.deleteDatabase();
+    let backupDBFile = ContentPrefTest.deleteBackupDatabase();
+
+    // Create an empty database and set the schema version to a number
+    // that will trigger a schema migration that will fail.
+    let dbService = Cc["@mozilla.org/storage/service;1"].
+                    getService(Ci.mozIStorageService);
+    let dbConnection = dbService.openDatabase(dbFile);
+    dbConnection.schemaVersion = -1;
+    dbConnection.close();
+    do_check_true(dbFile.exists());
+
+    // Get the service and make sure it backs up and recreates the database.
+    let cps = Cc["@mozilla.org/content-pref/service;1"].
+              createInstance(Ci.nsIContentPrefService);
+    do_check_true(backupDBFile.exists());
+    do_check_true(cps.DBConnection.connectionReady);
+
+    cps.DBConnection.close();
+  }
+
+
+  // Now get the content pref service for real for use by the rest of the tests.
+  let cps = new ContentPrefInstance(null);
+
+  var uri = ContentPrefTest.getURI("http://www.example.com/");
+
+  // Make sure disk synchronization checking is turned off by default.
+  var statement = cps.DBConnection.createStatement("PRAGMA synchronous");
+  statement.executeStep();
+  do_check_eq(0, statement.getInt32(0));
+
+  // Nonexistent Pref
+
+  do_check_eq(cps.getPref(uri, "test.nonexistent.getPref"), undefined);
+  do_check_eq(cps.setPref(uri, "test.nonexistent.setPref", 5), undefined);
+  do_check_false(cps.hasPref(uri, "test.nonexistent.hasPref"));
+  do_check_eq(cps.removePref(uri, "test.nonexistent.removePref"), undefined);
+
+
+  // Existing Pref
+
+  cps.setPref(uri, "test.existing", 5);
+
+  // getPref should return the pref value
+  do_check_eq(cps.getPref(uri, "test.existing"), 5);
+
+  // setPref should return undefined and change the value of the pref
+  do_check_eq(cps.setPref(uri, "test.existing", 6), undefined);
+  do_check_eq(cps.getPref(uri, "test.existing"), 6);
+
+  // hasPref should return true
+  do_check_true(cps.hasPref(uri, "test.existing"));
+
+  // removePref should return undefined and remove the pref
+  do_check_eq(cps.removePref(uri, "test.existing"), undefined);
+  do_check_false(cps.hasPref(uri, "test.existing"));
+
+
+  // Round-Trip Data Integrity
+
+  // Make sure pref values remain the same from setPref to getPref.
+
+  cps.setPref(uri, "test.data-integrity.integer", 5);
+  do_check_eq(cps.getPref(uri, "test.data-integrity.integer"), 5);
+
+  cps.setPref(uri, "test.data-integrity.float", 5.5);
+  do_check_eq(cps.getPref(uri, "test.data-integrity.float"), 5.5);
+
+  cps.setPref(uri, "test.data-integrity.boolean", true);
+  do_check_eq(cps.getPref(uri, "test.data-integrity.boolean"), true);
+
+  cps.setPref(uri, "test.data-integrity.string", "test");
+  do_check_eq(cps.getPref(uri, "test.data-integrity.string"), "test");
+
+  cps.setPref(uri, "test.data-integrity.null", null);
+  do_check_eq(cps.getPref(uri, "test.data-integrity.null"), null);
+
+  // XXX Test arbitrary binary data.
+
+  // Make sure hasPref and removePref work on all data types.
+
+  do_check_true(cps.hasPref(uri, "test.data-integrity.integer"));
+  do_check_true(cps.hasPref(uri, "test.data-integrity.float"));
+  do_check_true(cps.hasPref(uri, "test.data-integrity.boolean"));
+  do_check_true(cps.hasPref(uri, "test.data-integrity.string"));
+  do_check_true(cps.hasPref(uri, "test.data-integrity.null"));
+
+  do_check_eq(cps.removePref(uri, "test.data-integrity.integer"), undefined);
+  do_check_eq(cps.removePref(uri, "test.data-integrity.float"), undefined);
+  do_check_eq(cps.removePref(uri, "test.data-integrity.boolean"), undefined);
+  do_check_eq(cps.removePref(uri, "test.data-integrity.string"), undefined);
+  do_check_eq(cps.removePref(uri, "test.data-integrity.null"), undefined);
+
+  do_check_false(cps.hasPref(uri, "test.data-integrity.integer"));
+  do_check_false(cps.hasPref(uri, "test.data-integrity.float"));
+  do_check_false(cps.hasPref(uri, "test.data-integrity.boolean"));
+  do_check_false(cps.hasPref(uri, "test.data-integrity.string"));
+  do_check_false(cps.hasPref(uri, "test.data-integrity.null"));
+
+
+  // getPrefs
+
+  cps.setPref(uri, "test.getPrefs.a", 1);
+  cps.setPref(uri, "test.getPrefs.b", 2);
+  cps.setPref(uri, "test.getPrefs.c", 3);
+
+  var prefs = cps.getPrefs(uri);
+  do_check_true(prefs.hasKey("test.getPrefs.a"));
+  do_check_eq(prefs.get("test.getPrefs.a"), 1);
+  do_check_true(prefs.hasKey("test.getPrefs.b"));
+  do_check_eq(prefs.get("test.getPrefs.b"), 2);
+  do_check_true(prefs.hasKey("test.getPrefs.c"));
+  do_check_eq(prefs.get("test.getPrefs.c"), 3);
+
+
+  // Site-Specificity
+
+  {
+    // These are all different sites, and setting a pref for one of them
+    // shouldn't set it for the others.
+    let uri1 = ContentPrefTest.getURI("http://www.domain1.com/");
+    let uri2 = ContentPrefTest.getURI("http://foo.domain1.com/");
+    let uri3 = ContentPrefTest.getURI("http://domain1.com/");
+    let uri4 = ContentPrefTest.getURI("http://www.domain2.com/");
+
+    cps.setPref(uri1, "test.site-specificity.uri1", 5);
+    do_check_false(cps.hasPref(uri2, "test.site-specificity.uri1"));
+    do_check_false(cps.hasPref(uri3, "test.site-specificity.uri1"));
+    do_check_false(cps.hasPref(uri4, "test.site-specificity.uri1"));
+
+    cps.setPref(uri2, "test.site-specificity.uri2", 5);
+    do_check_false(cps.hasPref(uri1, "test.site-specificity.uri2"));
+    do_check_false(cps.hasPref(uri3, "test.site-specificity.uri2"));
+    do_check_false(cps.hasPref(uri4, "test.site-specificity.uri2"));
+
+    cps.setPref(uri3, "test.site-specificity.uri3", 5);
+    do_check_false(cps.hasPref(uri1, "test.site-specificity.uri3"));
+    do_check_false(cps.hasPref(uri2, "test.site-specificity.uri3"));
+    do_check_false(cps.hasPref(uri4, "test.site-specificity.uri3"));
+
+    cps.setPref(uri4, "test.site-specificity.uri4", 5);
+    do_check_false(cps.hasPref(uri1, "test.site-specificity.uri4"));
+    do_check_false(cps.hasPref(uri2, "test.site-specificity.uri4"));
+    do_check_false(cps.hasPref(uri3, "test.site-specificity.uri4"));
+  }
+
+  // Observers
+
+  var specificObserver = {
+    interfaces: [Ci.nsIContentPrefObserver, Ci.nsISupports],
+
+    QueryInterface: function ContentPrefTest_QueryInterface(iid) {
+      if (!this.interfaces.some( function(v) { return iid.equals(v) } ))
+        throw Cr.NS_ERROR_NO_INTERFACE;
+      return this;
+    },
+
+    numTimesSetCalled: 0,
+    onContentPrefSet: function specificObserver_onContentPrefSet(group, name, value) {
+      ++this.numTimesSetCalled;
+      do_check_eq(group, "www.example.com");
+      do_check_eq(name, "test.observer.1");
+      do_check_eq(value, "test value");
+    },
+
+    numTimesRemovedCalled: 0,
+    onContentPrefRemoved: function specificObserver_onContentPrefRemoved(group, name) {
+      ++this.numTimesRemovedCalled;
+      do_check_eq(group, "www.example.com");
+      do_check_eq(name, "test.observer.1");
+    }
+
+  };
+
+  var genericObserver = {
+    interfaces: [Ci.nsIContentPrefObserver, Ci.nsISupports],
+
+    QueryInterface: function ContentPrefTest_QueryInterface(iid) {
+      if (!this.interfaces.some( function(v) { return iid.equals(v) } ))
+        throw Cr.NS_ERROR_NO_INTERFACE;
+      return this;
+    },
+
+    numTimesSetCalled: 0,
+    onContentPrefSet: function genericObserver_onContentPrefSet(group, name, value, isPrivate) {
+      ++this.numTimesSetCalled;
+      do_check_eq(group, "www.example.com");
+      if (name == "test.observer.private")
+        do_check_true(isPrivate);
+      else if (name == "test.observer.normal")
+        do_check_false(isPrivate);
+      else if (name != "test.observer.1" && name != "test.observer.2")
+        do_throw("genericObserver.onContentPrefSet: " +
+                 "name not in (test.observer.(1|2|normal|private))");
+      do_check_eq(value, "test value");
+    },
+
+    numTimesRemovedCalled: 0,
+    onContentPrefRemoved: function genericObserver_onContentPrefRemoved(group, name, isPrivate) {
+      ++this.numTimesRemovedCalled;
+      do_check_eq(group, "www.example.com");
+      if (name == "test.observer.private")
+        do_check_true(isPrivate);
+      else if (name == "test.observer.normal")
+        do_check_false(isPrivate);
+      if (name != "test.observer.1" && name != "test.observer.2" &&
+          name != "test.observer.normal" && name != "test.observer.private") {
+        do_throw("genericObserver.onContentPrefSet: " +
+                 "name not in (test.observer.(1|2|normal|private))");
+      }
+    }
+
+  };
+
+  // Make sure we can add observers, observers get notified about changes,
+  // specific observers only get notified about changes to the specific setting,
+  // and generic observers get notified about changes to all settings.
+  cps.addObserver("test.observer.1", specificObserver);
+  cps.addObserver(null, genericObserver);
+  cps.setPref(uri, "test.observer.1", "test value");
+  cps.setPref(uri, "test.observer.2", "test value");
+  cps.removePref(uri, "test.observer.1");
+  cps.removePref(uri, "test.observer.2");
+  do_check_eq(specificObserver.numTimesSetCalled, 1);
+  do_check_eq(genericObserver.numTimesSetCalled, 2);
+  do_check_eq(specificObserver.numTimesRemovedCalled, 1);
+  do_check_eq(genericObserver.numTimesRemovedCalled, 2);
+
+  // Make sure information about private context is properly
+  // retrieved by the observer.
+  cps.setPref(uri, "test.observer.private", "test value", {usePrivateBrowsing: true});
+  cps.setPref(uri, "test.observer.normal", "test value", {usePrivateBrowsing: false});
+  cps.removePref(uri, "test.observer.private");
+  cps.removePref(uri, "test.observer.normal");
+
+  // Make sure we can remove observers and they don't get notified
+  // about changes anymore.
+  cps.removeObserver("test.observer.1", specificObserver);
+  cps.removeObserver(null, genericObserver);
+  cps.setPref(uri, "test.observer.1", "test value");
+  cps.removePref(uri, "test.observer.1", "test value");
+  do_check_eq(specificObserver.numTimesSetCalled, 1);
+  do_check_eq(genericObserver.numTimesSetCalled, 4);
+  do_check_eq(specificObserver.numTimesRemovedCalled, 1);
+  do_check_eq(genericObserver.numTimesRemovedCalled, 3);
+
+
+  // Get/Remove Prefs By Name
+
+  {
+    var anObserver = {
+      interfaces: [Ci.nsIContentPrefObserver, Ci.nsISupports],
+
+      QueryInterface: function ContentPrefTest_QueryInterface(iid) {
+        if (!this.interfaces.some( function(v) { return iid.equals(v) } ))
+          throw Cr.NS_ERROR_NO_INTERFACE;
+        return this;
+      },
+
+      onContentPrefSet: function anObserver_onContentPrefSet(group, name, value) {
+      },
+
+      expectedDomains: [],
+      numTimesRemovedCalled: 0,
+      onContentPrefRemoved: function anObserver_onContentPrefRemoved(group, name) {
+        ++this.numTimesRemovedCalled;
+
+        // remove the domain from the list of expected domains
+        var index = this.expectedDomains.indexOf(group);
+        do_check_true(index >= 0);
+        this.expectedDomains.splice(index, 1);
+      }
+    };
+
+    let uri1 = ContentPrefTest.getURI("http://www.domain1.com/");
+    let uri2 = ContentPrefTest.getURI("http://foo.domain1.com/");
+    let uri3 = ContentPrefTest.getURI("http://domain1.com/");
+    let uri4 = ContentPrefTest.getURI("http://www.domain2.com/");
+
+    cps.setPref(uri1, "test.byname.1", 1);
+    cps.setPref(uri1, "test.byname.2", 2);
+    cps.setPref(uri2, "test.byname.1", 4);
+    cps.setPref(uri3, "test.byname.3", 8);
+    cps.setPref(uri4, "test.byname.1", 16);
+    cps.setPref(null, "test.byname.1", 32);
+    cps.setPref(null, "test.byname.2", false);
+
+    function enumerateAndCheck(testName, expectedSum, expectedDomains) {
+      var prefsByName = cps.getPrefsByName(testName);
+      var enumerator = prefsByName.enumerator;
+      var sum = 0;
+      while (enumerator.hasMoreElements()) {
+        var property = enumerator.getNext().QueryInterface(Components.interfaces.nsIProperty);
+        sum += parseInt(property.value);
+
+        // remove the domain from the list of expected domains
+        var index = expectedDomains.indexOf(property.name);
+        do_check_true(index >= 0);
+        expectedDomains.splice(index, 1);
+      }
+      do_check_eq(sum, expectedSum);
+      // check all domains have been removed from the array
+      do_check_eq(expectedDomains.length, 0);
+    }
+
+    enumerateAndCheck("test.byname.1", 53,
+      ["foo.domain1.com", null, "www.domain1.com", "www.domain2.com"]);
+    enumerateAndCheck("test.byname.2", 2, ["www.domain1.com", null]);
+    enumerateAndCheck("test.byname.3", 8, ["domain1.com"]);
+
+    cps.addObserver("test.byname.1", anObserver);
+    anObserver.expectedDomains = ["foo.domain1.com", null, "www.domain1.com", "www.domain2.com"];
+
+    cps.removePrefsByName("test.byname.1");
+    do_check_false(cps.hasPref(uri1, "test.byname.1"));
+    do_check_false(cps.hasPref(uri2, "test.byname.1"));
+    do_check_false(cps.hasPref(uri3, "test.byname.1"));
+    do_check_false(cps.hasPref(uri4, "test.byname.1"));
+    do_check_false(cps.hasPref(null, "test.byname.1"));
+    do_check_true(cps.hasPref(uri1, "test.byname.2"));
+    do_check_true(cps.hasPref(uri3, "test.byname.3"));
+
+    do_check_eq(anObserver.numTimesRemovedCalled, 4);
+    do_check_eq(anObserver.expectedDomains.length, 0);
+
+    cps.removeObserver("test.byname.1", anObserver);
+
+    // Clean up after ourselves
+    cps.removePref(uri1, "test.byname.2");
+    cps.removePref(uri3, "test.byname.3");
+    cps.removePref(null, "test.byname.2");
+  }
+
+
+  // Clear Private Data Pref Removal
+
+  {
+    let uri1 = ContentPrefTest.getURI("http://www.domain1.com/");
+    let uri2 = ContentPrefTest.getURI("http://www.domain2.com/");
+    let uri3 = ContentPrefTest.getURI("http://www.domain3.com/");
+
+    let dbConnection = cps.DBConnection;
+
+    let prefCount = dbConnection.createStatement("SELECT COUNT(*) AS count FROM prefs");
+
+    let groupCount = dbConnection.createStatement("SELECT COUNT(*) AS count FROM groups");
+
+    // Add some prefs for multiple domains.
+    cps.setPref(uri1, "test.removeAllGroups", 1);
+    cps.setPref(uri2, "test.removeAllGroups", 2);
+    cps.setPref(uri3, "test.removeAllGroups", 3);
+
+    // Add a global pref.
+    cps.setPref(null, "test.removeAllGroups", 1);
+
+    // Make sure there are some prefs and groups in the database.
+    prefCount.executeStep();
+    do_check_true(prefCount.row.count > 0);
+    prefCount.reset();
+    groupCount.executeStep();
+    do_check_true(groupCount.row.count > 0);
+    groupCount.reset();
+
+    // Remove all prefs and groups from the database using the same routine
+    // the Clear Private Data dialog uses.
+    cps.removeGroupedPrefs();
+
+    // Make sure there are no longer any groups in the database and the only pref
+    // is the global one.
+    prefCount.executeStep();
+    do_check_true(prefCount.row.count == 1);
+    prefCount.reset();
+    groupCount.executeStep();
+    do_check_true(groupCount.row.count == 0);
+    groupCount.reset();
+    let globalPref = dbConnection.createStatement("SELECT groupID FROM prefs");
+    globalPref.executeStep();
+    do_check_true(globalPref.row.groupID == null);
+    globalPref.reset();
+  }
+}
diff --git a/toolkit/components/contentprefs/tests/unit/test_contentPrefsCache.js b/toolkit/components/contentprefs/tests/unit/test_contentPrefsCache.js
new file mode 100644
index 000000000..38a2faddc
--- /dev/null
+++ b/toolkit/components/contentprefs/tests/unit/test_contentPrefsCache.js
@@ -0,0 +1,244 @@
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+var cps = new ContentPrefInstance(null);
+
+function run_test() {
+  testCacheWorks("test1.example.com", "test-pref1");
+  testHasCachedPrefFunction("test2.example.com", "test-pref2");
+  testSetCaches("test3.example.com", "test-pref3");
+  testGetCaches("test4.example.com", "test-pref4");
+  testRemovePrefs("test5.example.com", "test-pref5");
+  testTypeConversions("test6.example.com", "test-pref6");
+  testNonExistingPrefCachesAsUndefined("test7.example.com", "test-pref7");
+  testCacheEviction("test8.example.com", "test-pref8");
+}
+
+function testCacheWorks(uri, prefName) {
+  const CACHED_VALUE = 3;
+  const NEW_VALUE = 5;
+
+  cps.setPref(uri, prefName, CACHED_VALUE);
+  do_check_eq(cps.getPref(uri, prefName), CACHED_VALUE);
+
+  // Now change the value directly through the DB and check
+  // that the cached value is different
+
+  let groupId = selectValue("SELECT id FROM groups WHERE name = :param1", "id", uri);
+  let settingId = selectValue("SELECT id FROM settings WHERE name = :param1", "id", prefName);
+  let prefId = selectValue("SELECT id FROM prefs WHERE groupID = :param1 AND settingID = :param2",
+                           "id", groupId, settingId);
+
+  let stmt = cps.DBConnection.createStatement("UPDATE prefs SET value = :value WHERE id = :id");
+  stmt.params.value = NEW_VALUE;
+  stmt.params.id = prefId;
+  stmt.execute();
+
+  let dbValue = selectValue("SELECT value FROM prefs WHERE id = :param1", "value", prefId);
+  let cacheValue = cps.getPref(uri, prefName);
+
+  do_check_eq(dbValue, NEW_VALUE);
+  do_check_eq(cacheValue, CACHED_VALUE);
+  do_check_neq(cacheValue, dbValue);
+
+  do_test_pending();
+  cps.getPref(uri, prefName, function (value) {
+    do_check_eq(dbValue, NEW_VALUE);
+    do_check_eq(value, CACHED_VALUE);
+    do_check_neq(value, dbValue);
+    do_test_finished();
+  });
+}
+
+function testHasCachedPrefFunction(uri, prefName) {
+  const STARTING_VALUE = 3;
+  const NEW_VALUE = 5;
+
+  do_check_false(isCached(uri, prefName));
+
+  cps.setPref(uri, prefName, STARTING_VALUE);
+
+  let groupId = selectValue("SELECT id FROM groups WHERE name = :param1", "id", uri);
+  let settingId = selectValue("SELECT id FROM settings WHERE name = :param1", "id", prefName);
+  let prefId = selectValue("SELECT id FROM prefs WHERE groupID = :param1 AND settingID = :param2",
+                       "id", groupId, settingId);
+
+  do_check_neq(prefId, undefined);
+
+  let originalValue = selectValue("SELECT value FROM prefs WHERE id = :param1", "value", prefId);
+  do_check_eq(originalValue, STARTING_VALUE);
+
+  let stmt = cps.DBConnection.createStatement("UPDATE prefs SET value = :value WHERE id = :id");
+  stmt.params.value = NEW_VALUE;
+  stmt.params.id = prefId;
+  stmt.execute();
+
+  let newValue = selectValue("SELECT value FROM prefs WHERE id = :param1", "value", prefId);
+  do_check_eq(newValue, NEW_VALUE);
+
+  let cachedValue = cps.getPref(uri, prefName);
+  do_check_eq(cachedValue, STARTING_VALUE);
+  do_check_true(isCached(uri, prefName));
+}
+
+function testSetCaches(uri, prefName) {
+  cps.setPref(uri, prefName, 0);
+  do_check_true(isCached(uri, prefName));
+}
+
+function testRemovePrefs(uri, prefName) {
+
+  /* removePref */
+  cps.setPref("www1." + uri, prefName, 1);
+
+  do_check_eq(cps.getPref("www1." + uri, prefName), 1);
+
+  cps.removePref("www1." + uri, prefName);
+
+  do_check_false(isCached("www1." + uri, prefName));
+  do_check_false(cps.hasPref("www1." + uri, prefName));
+  do_check_neq(cps.getPref("www1." + uri, prefName), 1);
+
+  /* removeGroupedPrefs */
+  cps.setPref("www2." + uri, prefName, 2);
+  cps.setPref("www3." + uri, prefName, 3);
+
+  do_check_eq(cps.getPref("www2." + uri, prefName), 2);
+  do_check_eq(cps.getPref("www3." + uri, prefName), 3);
+
+  cps.removeGroupedPrefs();
+
+  do_check_false(isCached("www2." + uri, prefName));
+  do_check_false(isCached("www3." + uri, prefName));
+  do_check_false(cps.hasPref("www2." + uri, prefName));
+  do_check_false(cps.hasPref("www3." + uri, prefName));
+  do_check_neq(cps.getPref("www2." + uri, prefName), 2);
+  do_check_neq(cps.getPref("www3." + uri, prefName), 3);
+
+  /* removePrefsByName */
+  cps.setPref("www4." + uri, prefName, 4);
+  cps.setPref("www5." + uri, prefName, 5);
+
+  do_check_eq(cps.getPref("www4." + uri, prefName), 4);
+  do_check_eq(cps.getPref("www5." + uri, prefName), 5);
+
+  cps.removePrefsByName(prefName);
+
+  do_check_false(isCached("www4." + uri, prefName));
+  do_check_false(isCached("www5." + uri, prefName));
+  do_check_false(cps.hasPref("www4." + uri, prefName));
+  do_check_false(cps.hasPref("www5." + uri, prefName));
+  do_check_neq(cps.getPref("www4." + uri, prefName), 4);
+  do_check_neq(cps.getPref("www5." + uri, prefName), 5);
+}
+
+function testGetCaches(uri, prefName) {
+  const VALUE = 4;
+
+  let insertGroup = cps.DBConnection.createStatement("INSERT INTO groups (name) VALUES (:name)");
+  insertGroup.params.name = uri;
+  insertGroup.execute();
+  let groupId = cps.DBConnection.lastInsertRowID;
+
+  let insertSetting = cps.DBConnection.createStatement("INSERT INTO settings (name) VALUES (:name)");
+  insertSetting.params.name = prefName;
+  insertSetting.execute();
+  let settingId = cps.DBConnection.lastInsertRowID;
+
+  let insertPref = cps.DBConnection.createStatement(`
+    INSERT INTO prefs (groupID, settingID, value)
+    VALUES (:groupId, :settingId, :value)
+  `);
+  insertPref.params.groupId = groupId;
+  insertPref.params.settingId = settingId;
+  insertPref.params.value = VALUE;
+  insertPref.execute();
+  let prefId = cps.DBConnection.lastInsertRowID;
+
+  let dbValue = selectValue("SELECT value FROM prefs WHERE id = :param1", "value", prefId);
+
+  // First access from service should hit the DB
+  let svcValue = cps.getPref(uri, prefName);
+
+  // Second time should get the value from cache
+  let cacheValue = cps.getPref(uri, prefName);
+
+  do_check_eq(VALUE, dbValue);
+  do_check_eq(VALUE, svcValue);
+  do_check_eq(VALUE, cacheValue);
+
+  do_check_true(isCached(uri, prefName));
+}
+
+function testTypeConversions(uri, prefName) {
+  let value;
+
+  cps.setPref(uri, prefName, true);
+  value = cps.getPref(uri, prefName);
+  do_check_true(value === 1);
+
+  cps.setPref(uri, prefName, false);
+  value = cps.getPref(uri, prefName);
+  do_check_true(value === 0);
+
+  cps.setPref(uri, prefName, null);
+  value = cps.getPref(uri, prefName);
+  do_check_true(value === null);
+
+  cps.setPref(uri, prefName, undefined);
+  value = cps.getPref(uri, prefName);
+  do_check_true(value === null);
+}
+
+function testNonExistingPrefCachesAsUndefined(uri, prefName) {
+
+  do_check_false(isCached(uri, prefName));
+
+  // Cache the pref
+  let value = cps.getPref(uri, prefName);
+  do_check_true(value === undefined);
+
+  do_check_true(isCached(uri, prefName));
+
+  // Cached pref
+  value = cps.getPref(uri, prefName);
+  do_check_true(value === undefined);
+}
+
+function testCacheEviction(uri, prefName) {
+
+  cps.setPref(uri, prefName, 5);
+  do_check_eq(cps.getPref(uri, prefName), 5);
+  do_check_true(isCached(uri, prefName));
+
+  // try to evict value from cache by adding various other entries
+  const ENTRIES_TO_ADD = 200;
+  for (let i = 0; i < ENTRIES_TO_ADD; i++) {
+    let uriToAdd = "www" + i + uri;
+    cps.setPref(uriToAdd, prefName, 0);
+  }
+
+  do_check_false(isCached(uri, prefName));
+
+}
+
+function selectValue(stmt, columnName, param1, param2) {
+  stmt = cps.DBConnection.createStatement(stmt);
+  if (param1)
+    stmt.params.param1 = param1;
+
+  if (param2)
+    stmt.params.param2 = param2;
+
+  stmt.executeStep();
+  let val = stmt.row[columnName];
+  stmt.reset();
+  stmt.finalize();
+  return val;
+}
+
+function isCached(uri, prefName) {
+  return cps.hasCachedPref(uri, prefName);
+}
diff --git a/toolkit/components/contentprefs/tests/unit/test_getPrefAsync.js b/toolkit/components/contentprefs/tests/unit/test_getPrefAsync.js
new file mode 100644
index 000000000..27d239f79
--- /dev/null
+++ b/toolkit/components/contentprefs/tests/unit/test_getPrefAsync.js
@@ -0,0 +1,34 @@
+/* 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 cps = new ContentPrefInstance(null);
+var uri = ContentPrefTest.getURI("http://www.example.com/");
+
+function run_test() {
+  do_test_pending();
+
+  cps.setPref(uri, "asynctest", "pie");
+  do_check_eq(cps.getPref(uri, "asynctest"), "pie");
+
+  cps.getPref(uri, "asynctest", function(aValue) {
+    do_check_eq(aValue, "pie");
+    testCallbackObj();
+  });
+}
+
+function testCallbackObj() {
+  cps.getPref(uri, "asynctest", {
+    onResult: function(aValue) {
+      do_check_eq(aValue, "pie");
+      cps.removePref(uri, "asynctest");
+      testNoResult();
+    }
+  });
+}
+
+function testNoResult() {
+  cps.getPref(uri, "asynctest", function(aValue) {
+    do_check_eq(aValue, undefined);
+    do_test_finished();
+  });
+}
diff --git a/toolkit/components/contentprefs/tests/unit/test_stringGroups.js b/toolkit/components/contentprefs/tests/unit/test_stringGroups.js
new file mode 100644
index 000000000..afce3b64a
--- /dev/null
+++ b/toolkit/components/contentprefs/tests/unit/test_stringGroups.js
@@ -0,0 +1,128 @@
+/* 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/. */
+
+function run_test() {
+
+  var cps = new ContentPrefInstance(null);
+
+  // Make sure disk synchronization checking is turned off by default.
+  var statement = cps.DBConnection.createStatement("PRAGMA synchronous");
+  statement.executeStep();
+  do_check_eq(0, statement.getInt32(0));
+
+  // These are the different types of aGroup arguments we'll test.
+  var anObject = {"foo":"bar"};                                // a simple object
+  var uri = ContentPrefTest.getURI("http://www.example.com/"); // nsIURI
+  var stringURI = "www.example.com";                           // typeof = "string"
+  var stringObjectURI = new String("www.example.com");         // typeof = "object"
+
+  {
+    // First check that all the methods work or don't work.
+    function simple_test_methods(aGroup, shouldThrow) {
+      var prefName = "test.pref.0";
+      var prefValue = Math.floor(Math.random() * 100);
+
+      if (shouldThrow) {
+        do_check_thrown(function () { cps.getPref(aGroup, prefName); });
+        do_check_thrown(function () { cps.setPref(aGroup, prefName, prefValue); });
+        do_check_thrown(function () { cps.hasPref(aGroup, prefName); });
+        do_check_thrown(function () { cps.removePref(aGroup, prefName); });
+        do_check_thrown(function () { cps.getPrefs(aGroup); });
+      } else {
+        do_check_eq(cps.setPref(aGroup, prefName, prefValue), undefined);
+        do_check_true(cps.hasPref(aGroup, prefName));
+        do_check_eq(cps.getPref(aGroup, prefName), prefValue);
+        do_check_eq(cps.removePref(aGroup, prefName), undefined);
+        do_check_false(cps.hasPref(aGroup, prefName));
+      }
+    }
+
+    simple_test_methods(cps, true); // arbitrary nsISupports object, should throw too
+    simple_test_methods(anObject, true);
+    simple_test_methods(uri, false);
+    simple_test_methods(stringURI, false);
+    simple_test_methods(stringObjectURI, false);
+  }
+
+  {
+    // Now we'll check that each argument produces the same result.
+    function complex_test_methods(aGroup) {
+      var prefName = "test.pref.1";
+      var prefValue = Math.floor(Math.random() * 100);
+
+      do_check_eq(cps.setPref(aGroup, prefName, prefValue), undefined);
+
+      do_check_true(cps.hasPref(uri, prefName));
+      do_check_true(cps.hasPref(stringURI, prefName));
+      do_check_true(cps.hasPref(stringObjectURI, prefName));
+
+      do_check_eq(cps.getPref(uri, prefName), prefValue);
+      do_check_eq(cps.getPref(stringURI, prefName), prefValue);
+      do_check_eq(cps.getPref(stringObjectURI, prefName), prefValue);
+
+      do_check_eq(cps.removePref(aGroup, prefName), undefined);
+
+      do_check_false(cps.hasPref(uri, prefName));
+      do_check_false(cps.hasPref(stringURI, prefName));
+      do_check_false(cps.hasPref(stringObjectURI, prefName));
+    }
+
+    complex_test_methods(uri);
+    complex_test_methods(stringURI);
+    complex_test_methods(stringObjectURI);
+  }
+
+  {
+    // test getPrefs returns the same prefs
+    do_check_eq(cps.setPref(stringObjectURI, "test.5", 5), undefined);
+    do_check_eq(cps.setPref(stringURI, "test.2", 2), undefined);
+    do_check_eq(cps.setPref(uri, "test.1", 1), undefined);
+
+    enumerateAndCheck(cps.getPrefs(uri), 8, ["test.1", "test.2", "test.5"]);
+    enumerateAndCheck(cps.getPrefs(stringURI), 8, ["test.1", "test.2", "test.5"]);
+    enumerateAndCheck(cps.getPrefs(stringObjectURI), 8, ["test.1", "test.2", "test.5"]);
+
+    do_check_eq(cps.setPref(uri, "test.4", 4), undefined);
+    do_check_eq(cps.setPref(stringObjectURI, "test.0", 0), undefined);
+
+    enumerateAndCheck(cps.getPrefs(uri), 12, ["test.0", "test.1", "test.2", "test.4", "test.5"]);
+    enumerateAndCheck(cps.getPrefs(stringURI), 12, ["test.0", "test.1", "test.2", "test.4", "test.5"]);
+    enumerateAndCheck(cps.getPrefs(stringObjectURI), 12, ["test.0", "test.1", "test.2", "test.4", "test.5"]);
+
+    do_check_eq(cps.setPref(stringURI, "test.3", 3), undefined);
+
+    enumerateAndCheck(cps.getPrefs(uri), 15, ["test.0", "test.1", "test.2", "test.3", "test.4", "test.5"]);
+    enumerateAndCheck(cps.getPrefs(stringURI), 15, ["test.0", "test.1", "test.2", "test.3", "test.4", "test.5"]);
+    enumerateAndCheck(cps.getPrefs(stringObjectURI), 15, ["test.0", "test.1", "test.2", "test.3", "test.4", "test.5"]);
+  }
+}
+
+function do_check_thrown (aCallback) {
+  var exThrown = false;
+  try {
+    aCallback();
+    do_throw("NS_ERROR_ILLEGAL_VALUE should have been thrown here");
+  } catch (e) {
+    do_check_eq(e.result, Cr.NS_ERROR_ILLEGAL_VALUE);
+    exThrown = true;
+  }
+  do_check_true(exThrown);
+}
+
+function enumerateAndCheck(prefs, expectedSum, expectedNames) {
+  var enumerator = prefs.enumerator;
+  var sum = 0;
+  while (enumerator.hasMoreElements()) {
+    var property = enumerator.getNext().QueryInterface(Components.interfaces.nsIProperty);
+    sum += parseInt(property.value);
+
+    // remove the pref name from the list of expected names
+    var index = expectedNames.indexOf(property.name);
+    do_check_true(index >= 0);
+    expectedNames.splice(index, 1);
+  }
+  do_check_eq(sum, expectedSum);
+  // check all pref names have been removed from the array
+  do_check_eq(expectedNames.length, 0);
+}
diff --git a/toolkit/components/contentprefs/tests/unit/test_unusedGroupsAndSettings.js b/toolkit/components/contentprefs/tests/unit/test_unusedGroupsAndSettings.js
new file mode 100644
index 000000000..24a86bcc0
--- /dev/null
+++ b/toolkit/components/contentprefs/tests/unit/test_unusedGroupsAndSettings.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/. */
+
+var cps = new ContentPrefInstance(null);
+
+function run_test() {
+  var uri1 = ContentPrefTest.getURI("http://www.domain1.com/");
+  var uri2 = ContentPrefTest.getURI("http://foo.domain1.com/");
+  var uri3 = ContentPrefTest.getURI("http://domain1.com/");
+  var uri4 = ContentPrefTest.getURI("http://www.domain2.com/");
+
+  cps.setPref(uri1, "one", 1);
+  cps.setPref(uri1, "two", 2);
+  cps.setPref(uri2, "one", 4);
+  cps.setPref(uri3, "three", 8);
+  cps.setPref(uri4, "two", 16);
+
+  cps.removePref(uri3, "three"); // uri3 should be removed now
+  checkForUnusedGroups();
+  checkForUnusedSettings();
+
+  cps.removePrefsByName("two"); // uri4 should be removed now
+  checkForUnusedGroups();
+  checkForUnusedSettings();
+
+  cps.removeGroupedPrefs();
+  checkForUnusedGroups();
+  checkForUnusedSettings();
+}
+
+function checkForUnusedGroups() {
+  var stmt = cps.DBConnection.createStatement(`
+               SELECT COUNT(*) AS count FROM groups
+               WHERE id NOT IN (SELECT DISTINCT groupID FROM prefs)
+             `);
+  stmt.executeStep();
+  do_check_eq(0, stmt.row.count);
+  stmt.reset();
+  stmt.finalize();
+}
+
+function checkForUnusedSettings() {
+  var stmt = cps.DBConnection.createStatement(`
+               SELECT COUNT(*) AS count FROM settings
+               WHERE id NOT IN (SELECT DISTINCT settingID FROM prefs)
+             `);
+  stmt.executeStep();
+  do_check_eq(0, stmt.row.count);
+  stmt.reset();
+  stmt.finalize();
+}
diff --git a/toolkit/components/contentprefs/tests/unit/xpcshell.ini b/toolkit/components/contentprefs/tests/unit/xpcshell.ini
new file mode 100644
index 000000000..cbae178b1
--- /dev/null
+++ b/toolkit/components/contentprefs/tests/unit/xpcshell.ini
@@ -0,0 +1,12 @@
+[DEFAULT]
+head = head_contentPrefs.js
+tail = tail_contentPrefs.js
+
+[test_bug248970.js]
+[test_bug503971.js]
+[test_bug679784.js]
+[test_contentPrefs.js]
+[test_contentPrefsCache.js]
+[test_getPrefAsync.js]
+[test_stringGroups.js]
+[test_unusedGroupsAndSettings.js]