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<!DOCTYPE HTML>
<html>
<head>
  <title>Test for simple WebExtension</title>
  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
  <script type="text/javascript" src="/tests/SimpleTest/SpawnTask.js"></script>
  <script type="text/javascript" src="/tests/SimpleTest/ExtensionTestUtils.js"></script>
  <script type="text/javascript" src="head.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
</head>
<body>

<script type="text/javascript">
"use strict";

add_task(function* test_suspend() {
  let extension = ExtensionTestUtils.loadExtension({
    manifest: {
      permissions: [
        "webRequest",
        "webRequestBlocking",
      ],
    },

    background() {
      browser.webRequest.onBeforeSendHeaders.addListener(
        details => {
          // Make sure that returning undefined or a promise that resolves to
          // undefined does not break later handlers.
        },
        {urls: ["<all_urls>"]},
        ["blocking", "requestHeaders"]);

      browser.webRequest.onBeforeSendHeaders.addListener(
        details => {
          return Promise.resolve();
        },
        {urls: ["<all_urls>"]},
        ["blocking", "requestHeaders"]);

      browser.webRequest.onBeforeSendHeaders.addListener(
        details => {
          let requestHeaders = details.requestHeaders.concat({name: "Foo", value: "Bar"});

          return new Promise(resolve => {
            setTimeout(resolve, 500);
          }).then(() => {
            return {requestHeaders};
          });
        },
        {urls: ["<all_urls>"]},
        ["blocking", "requestHeaders"]);
    },
  });

  yield extension.startup();

  let result = yield fetch(SimpleTest.getTestFileURL("return_headers.sjs"));

  let headers = JSON.parse(yield result.text());

  is(headers.foo, "Bar", "Request header was correctly set on suspended request");

  yield extension.unload();
});


// Test that requests that were canceled while suspended for a blocking
// listener are correctly resumed.
add_task(function* test_error_resume() {
  let chromeScript = SpecialPowers.loadChromeScript(() => {
    const {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components;
    Cu.import("resource://gre/modules/Services.jsm");

    let observer = channel => {
      if (channel instanceof Ci.nsIHttpChannel && channel.URI.spec === "http://example.com/") {
        Services.obs.removeObserver(observer, "http-on-modify-request");

        // Wait until the next tick to make sure this runs after WebRequest observers.
        Promise.resolve().then(() => {
          channel.cancel(Cr.NS_BINDING_ABORTED);
        });
      }
    };

    Services.obs.addObserver(observer, "http-on-modify-request", false);
  });

  let extension = ExtensionTestUtils.loadExtension({
    manifest: {
      permissions: [
        "webRequest",
        "webRequestBlocking",
      ],
    },

    background() {
      browser.webRequest.onBeforeSendHeaders.addListener(
        details => {
          browser.test.log(`onBeforeSendHeaders({url: ${details.url}})`);

          if (details.url === "http://example.com/") {
            browser.test.sendMessage("got-before-send-headers");
          }
        },
        {urls: ["<all_urls>"]},
        ["blocking"]);

      browser.webRequest.onErrorOccurred.addListener(
        details => {
          browser.test.log(`onErrorOccurred({url: ${details.url}})`);

          if (details.url === "http://example.com/") {
            browser.test.sendMessage("got-error-occurred");
          }
        },
        {urls: ["<all_urls>"]});
    },
  });

  yield extension.startup();

  try {
    yield fetch("http://example.com/");
    ok(false, "Fetch should have failed.");
  } catch (e) {
    ok(true, "Got expected error.");
  }

  yield extension.awaitMessage("got-before-send-headers");
  yield extension.awaitMessage("got-error-occurred");

  yield extension.unload();
  chromeScript.destroy();
});


// Test that response header modifications take effect before onStartRequest fires.
add_task(function* test_set_responseHeaders() {
  let extension = ExtensionTestUtils.loadExtension({
    manifest: {
      permissions: [
        "webRequest",
        "webRequestBlocking",
        "http://example.com/",
      ],
    },

    background() {
      browser.webRequest.onHeadersReceived.addListener(
        details => {
          browser.test.log(`onHeadersReceived({url: ${details.url}})`);

          details.responseHeaders.push({name: "foo", value: "bar"});

          return {responseHeaders: details.responseHeaders};
        },
        {urls: ["http://example.com/?modify_headers"]},
        ["blocking", "responseHeaders"]);
    },
  });

  yield extension.startup();

  yield new Promise(resolve => setTimeout(resolve, 0));

  let chromeScript = SpecialPowers.loadChromeScript(() => {
    const {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components;

    Cu.import("resource://gre/modules/NetUtil.jsm");
    Cu.import("resource://gre/modules/Services.jsm");
    Cu.import("resource://gre/modules/XPCOMUtils.jsm");

    let ssm = Services.scriptSecurityManager;

    let channel = NetUtil.newChannel({
      uri: "http://example.com/?modify_headers",
      loadingPrincipal: ssm.createCodebasePrincipalFromOrigin("http://example.com"),
      contentPolicyType: Ci.nsIContentPolicy.TYPE_XMLHTTPREQUEST,
      securityFlags: Ci.nsILoadInfo.SEC_ALLOW_CROSS_ORIGIN_DATA_IS_NULL,
    });

    channel.asyncOpen2({
      QueryInterface: XPCOMUtils.generateQI([Ci.nsIStreamListener]),

      onStartRequest(request, context) {
        request.QueryInterface(Ci.nsIHttpChannel);

        try {
          sendAsyncMessage("response-header-foo", request.getResponseHeader("foo"));
        } catch (e) {
          sendAsyncMessage("response-header-foo", null);
        }
        request.cancel(Cr.NS_BINDING_ABORTED);
      },

      onStopRequest() {
      },

      onDataAvailable() {
        throw new Components.Exception("", Cr.NS_ERROR_FAILURE);
      },
    });
  });

  let headerValue = yield chromeScript.promiseOneMessage("response-header-foo");
  is(headerValue, "bar", "Expected Foo header value");

  yield extension.unload();
  chromeScript.destroy();
});


</script>
</body>
</html>