tor-browser

The Tor Browser
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helper_cancel_active_task.html (3196B)

      1 <!DOCTYPE html>
      2 <html>
      3 <meta name="viewport" content="width=device-width; initial-scale=1.0">
      4 <title>
      5  Tests that scheduled :hover task is surely destroyed when the target
      6  document is destroyed
      7 </title>
      8 <script src="/tests/SimpleTest/SimpleTest.js"></script>
      9 <script src="/tests/SimpleTest/paint_listener.js"></script>
     10 <script src="apz_test_utils.js"></script>
     11 <script src="apz_test_native_event_utils.js"></script>
     12 <style>
     13 iframe {
     14  width: 100vw;
     15  height: 100vh;
     16  border: none;
     17 }
     18 </style>
     19 <iframe></iframe>
     20 <script>
     21 async function test() {
     22  const iframe = document.querySelector("iframe");
     23  await setupCrossOriginIFrame(iframe, "helper_fission_plain.html");
     24  const remoteType = await SpecialPowers.spawn(iframe, [], async () => {
     25    return await SpecialPowers.spawnChrome([], () => {
     26      return windowGlobalParent.domProcess.remoteType;
     27    });
     28  });
     29  if (remoteType === "web") {
     30    is(SpecialPowers.effectiveIsolationStrategy(), SpecialPowers.ISOLATION_STRATEGY.IsolateHighValue);
     31    ok(true, "Skipping this test since the document on example.com got loaded in the same content process");
     32    return;
     33  }
     34 
     35  // Setup a touchstart and a touchend event listener in the iframe
     36  // document.
     37  const touchstartPromise = SpecialPowers.spawn(iframe, [], () => {
     38    return new Promise(resolve => {
     39      content.window.addEventListener("touchstart", () => { resolve(); });
     40    });
     41  });
     42  const touchendPromise = SpecialPowers.spawn(iframe, [], () => {
     43    return new Promise(resolve => {
     44      content.window.addEventListener("touchend", () => { resolve(); });
     45    });
     46  });
     47  await SpecialPowers.spawn(iframe, [], async () => {
     48    await new Promise(resolve => resolve());
     49  });
     50 
     51  // Touch on the iframe.
     52  // This will trigger a scheduled task to set :hover state.
     53  const utils = SpecialPowers.DOMWindowUtils;
     54  utils.sendTouchEvent("touchstart",
     55    [0], [100], [100], [1], [1], [1], [1], [0], [0], [0], 0);
     56  await touchstartPromise;
     57 
     58  // In JS there's no way to ensure `APZStateChange::eStartTouch` notification
     59  // has been processed. So we wait a couple of frames.
     60  await new Promise(resolve => requestAnimationFrame(resolve));
     61  await new Promise(resolve => requestAnimationFrame(resolve));
     62  await new Promise(resolve => requestAnimationFrame(resolve));
     63 
     64  // And destroy the iframe while the scheduled task is still
     65  // pending.
     66  iframe.style.display = "none";
     67  // Flush the above change.
     68  getComputedStyle(iframe).display;
     69 
     70  // Wait a couple of frames just in case.
     71  await new Promise(resolve => requestAnimationFrame(resolve));
     72  await new Promise(resolve => requestAnimationFrame(resolve));
     73 
     74  // Finish the touch block explicitely, otherwise in subsequent tests
     75  // new touch events won't be dispatched as expected.
     76  utils.sendTouchEvent("touchend",
     77    [0], [100], [100], [1], [1], [1], [1], [0], [0], [0], 0);
     78  await touchendPromise;
     79 
     80  ok(true, "There's no need to check, it's okay if there's no leak");
     81 }
     82 
     83 if (!SpecialPowers.Services.appinfo.fissionAutostart) {
     84  ok(true, "This test doesn't need to run with disabling Fission");
     85  subtestDone();
     86 } else {
     87  waitUntilApzStable()
     88  .then(test)
     89  .then(subtestDone, subtestFailed);
     90 }
     91 </script>
     92 </html>