tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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browser_browsing_context_active_change.js (3294B)

      1 "use strict";
      2 
      3 // Test browsing-context-active-change notification which is fired on the parent process
      4 // to know when a BrowsingContext becomes visible/hidden.
      5 
      6 function observeTopic(aTopic) {
      7  return new Promise(resolve => {
      8    function observer(subject, topic) {
      9      is(topic, aTopic, "observing correct topic");
     10      ok(
     11        BrowsingContext.isInstance(subject),
     12        "subject to be a BrowsingContext"
     13      );
     14      Services.obs.removeObserver(observer, aTopic);
     15      resolve();
     16    }
     17 
     18    Services.obs.addObserver(observer, aTopic);
     19  });
     20 }
     21 
     22 function waitForActiveChange() {
     23  return observeTopic("browsing-context-active-change");
     24 }
     25 
     26 function waitForAttached() {
     27  return observeTopic("browsing-context-attached");
     28 }
     29 
     30 add_task(async function () {
     31  const tab = await BrowserTestUtils.openNewForegroundTab(gBrowser);
     32  const browser = tab.linkedBrowser;
     33 
     34  let onActiveChange = waitForActiveChange();
     35  browser.docShellIsActive = false;
     36  await onActiveChange;
     37  is(
     38    browser.browsingContext.isActive,
     39    false,
     40    "The browsing context is no longer active"
     41  );
     42 
     43  onActiveChange = waitForActiveChange();
     44  browser.docShellIsActive = true;
     45  await onActiveChange;
     46  is(
     47    browser.browsingContext.isActive,
     48    true,
     49    "The browsing context is active again"
     50  );
     51 
     52  BrowserTestUtils.removeTab(tab);
     53 });
     54 
     55 // Tests that BrowsingContext.isActive becomes false in BF cache.
     56 add_task(async function () {
     57  const TEST_PATH1 =
     58    getRootDirectory(gTestPath).replace(
     59      "chrome://mochitests/content",
     60      // eslint-disable-next-line @microsoft/sdl/no-insecure-url
     61      "http://example.com"
     62    ) + "dummy_page.html";
     63  const TEST_PATH2 =
     64    getRootDirectory(gTestPath).replace(
     65      "chrome://mochitests/content",
     66      // eslint-disable-next-line @microsoft/sdl/no-insecure-url
     67      "http://example.com"
     68    ) + "dummy_iframe_page.html";
     69 
     70  let attached = waitForActiveChange();
     71  const tab = await BrowserTestUtils.openNewForegroundTab(gBrowser, TEST_PATH1);
     72  await attached;
     73 
     74  const firstBC = tab.linkedBrowser.browsingContext;
     75  is(firstBC.isActive, true, "The first browsing context is now active");
     76  is(firstBC.currentURI.spec, TEST_PATH1);
     77 
     78  // Load a new page now.
     79  let stoppedLoadingPromise = BrowserTestUtils.browserStopped(
     80    tab.linkedBrowser,
     81    TEST_PATH2
     82  );
     83  await loadURI(TEST_PATH2);
     84  await stoppedLoadingPromise;
     85  const secondBC = tab.linkedBrowser.browsingContext;
     86  await TestUtils.waitForCondition(() => secondBC.isActive);
     87 
     88  isnot(firstBC, secondBC);
     89 
     90  is(secondBC.isActive, true, "The second browsing context is now active");
     91  is(secondBC.currentURI.spec, TEST_PATH2);
     92  is(firstBC.isActive, false, "The first browsing context is no longer active");
     93  is(firstBC.currentURI.spec, TEST_PATH1);
     94 
     95  // Now try to back to the previous page, unlike above cases we don't wait
     96  // "browsing-context-active-change" since it's not notified on this history back.
     97  stoppedLoadingPromise = BrowserTestUtils.browserStopped(
     98    tab.linkedBrowser,
     99    TEST_PATH1
    100  );
    101  gBrowser.goBack();
    102  await stoppedLoadingPromise;
    103 
    104  is(
    105    secondBC.isActive,
    106    false,
    107    "The second browsing context is no longer active"
    108  );
    109  is(firstBC.isActive, true, "The first browsing context is active again");
    110 
    111  BrowserTestUtils.removeTab(tab);
    112 });