tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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browser_bug1791083.js (2453B)

      1 /* Any copyright is dedicated to the Public Domain.
      2    http://creativecommons.org/publicdomain/zero/1.0/ */
      3 
      4 const URL =
      5  "data:text/html," +
      6  "<style> a:hover {background-color: black}</style>" +
      7  "<body style='width:100px;height:100px'>" +
      8  "<a href='http://www.example.com'>Click Me</a>" +
      9  "</body>";
     10 
     11 function isAnchorHovered(win) {
     12  return SpecialPowers.spawn(
     13    win.gBrowser.selectedBrowser,
     14    [],
     15    async function () {
     16      const a = content.document.querySelector("a");
     17      return a.matches(":hover");
     18    }
     19  );
     20 }
     21 
     22 add_task(async function test() {
     23  let newWin = await BrowserTestUtils.openNewBrowserWindow();
     24 
     25  // This bug is only reproducible if the cursor is out of the viewport, so
     26  // we resize the window to ensure the cursor is out of the viewport.
     27 
     28  // SynthesizeMouse isn't sufficient because it only synthesizes
     29  // mouse events without actually moving the cursor permanently to a
     30  // new location.
     31  newWin.resizeTo(50, 50);
     32 
     33  BrowserTestUtils.startLoadingURIString(newWin.gBrowser.selectedBrowser, URL);
     34  await BrowserTestUtils.browserLoaded(newWin.gBrowser.selectedBrowser);
     35 
     36  await SpecialPowers.spawn(
     37    newWin.gBrowser.selectedBrowser,
     38    [],
     39    async function () {
     40      const a = content.document.querySelector("a");
     41      await EventUtils.synthesizeMouseAtCenter(
     42        a,
     43        { type: "mousemove" },
     44        content
     45      );
     46    }
     47  );
     48 
     49  // We've hovered the anchor element.
     50  let anchorHovered = await isAnchorHovered(newWin);
     51  ok(anchorHovered, "Anchor should be hovered");
     52 
     53  let locationChange = BrowserTestUtils.waitForLocationChange(newWin.gBrowser);
     54 
     55  // Click the anchor to navigate away
     56  await SpecialPowers.spawn(
     57    newWin.gBrowser.selectedBrowser,
     58    [],
     59    async function () {
     60      const a = content.document.querySelector("a");
     61      await EventUtils.synthesizeMouseAtCenter(
     62        a,
     63        { type: "mousedown" },
     64        content
     65      );
     66      await EventUtils.synthesizeMouseAtCenter(a, { type: "mouseup" }, content);
     67    }
     68  );
     69  await locationChange;
     70 
     71  // Navigate back to the previous page which has the anchor
     72  locationChange = BrowserTestUtils.waitForLocationChange(newWin.gBrowser);
     73  newWin.gBrowser.selectedBrowser.goBack();
     74  await locationChange;
     75 
     76  // Hover state should be cleared upon page caching.
     77  anchorHovered = await isAnchorHovered(newWin);
     78  ok(!anchorHovered, "Anchor should not be hovered");
     79 
     80  BrowserTestUtils.closeWindow(newWin);
     81 });