tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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browser_cancel_content_js.js (2064B)

      1 /* This Source Code Form is subject to the terms of the Mozilla Public
      2 * License, v. 2.0. If a copy of the MPL was not distributed with this
      3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      4 
      5 "use strict";
      6 
      7 requestLongerTimeout(10);
      8 
      9 const TEST_PAGE =
     10  "http://mochi.test:8888/browser/dom/ipc/tests/file_cancel_content_js.html";
     11 const NEXT_PAGE = "http://mochi.test:8888/browser/dom/ipc/tests/";
     12 const JS_URI = "javascript:void(document.title = 'foo')";
     13 
     14 async function test_navigation(nextPage, shouldCancel) {
     15  await SpecialPowers.pushPrefEnv({
     16    set: [
     17      ["dom.max_script_run_time", 20],
     18      // Force a single process so that the navigation will complete in the same
     19      // process as the previous page which is running the long-running script.
     20      ["dom.ipc.processCount", 1],
     21      ["dom.ipc.processCount.webIsolated", 1],
     22    ],
     23  });
     24  let tab = await BrowserTestUtils.openNewForegroundTab({
     25    gBrowser,
     26    opening: TEST_PAGE,
     27  });
     28 
     29  const loopEnded = ContentTask.spawn(tab.linkedBrowser, [], async function () {
     30    await new Promise(resolve => {
     31      content.addEventListener("LongLoopEnded", resolve, {
     32        once: true,
     33      });
     34    });
     35  });
     36 
     37  // Wait for the test page's long-running JS loop to start.
     38  await ContentTask.spawn(tab.linkedBrowser, [], function () {
     39    content.dispatchEvent(new content.Event("StartLongLoop"));
     40  });
     41 
     42  info(`navigating to ${nextPage}`);
     43  const nextPageLoaded = BrowserTestUtils.waitForContentEvent(
     44    tab.linkedBrowser,
     45    "DOMTitleChanged"
     46  );
     47  BrowserTestUtils.startLoadingURIString(gBrowser, nextPage);
     48 
     49  const result = await Promise.race([
     50    nextPageLoaded,
     51    loopEnded.then(() => "timeout"),
     52  ]);
     53 
     54  const timedOut = result === "timeout";
     55  if (shouldCancel) {
     56    Assert.strictEqual(timedOut, false, "expected next page to be loaded");
     57  } else {
     58    Assert.strictEqual(timedOut, true, "expected timeout");
     59  }
     60 
     61  BrowserTestUtils.removeTab(tab);
     62 }
     63 
     64 add_task(async () => test_navigation(NEXT_PAGE, true));
     65 add_task(async () => test_navigation(JS_URI, false));