Quelle test_bug851485.html Sprache: HTML

products/sources/formale Sprachen/C/Firefox/layout/base/tests/test_bug851485.html

<!DOCTYPE HTML>
<html>

<head>
  <meta charset="utf-8">
  <title>Test for Bug 851485</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <script src="/tests/SimpleTest/EventUtils.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
  <script type="application/javascript">

  /** Test for Bug 851485 **/

SimpleTest.waitForExplicitFinish();

var testRunning = false;
async function runTest() {
  if (testRunning) {
    return;
  }
  testRunning = true;

  var e = document.getElementsByTagName('iframe')[0];
  var win = e.contentWindow;

  var p = new Promise((r) => { win.addEventListener("hashchange", r, { once: true }); });
  win.location.hash = '#anchor';
  await p;

  win.scrollTo(0, 500);

  p = new Promise((r) => { e.addEventListener("load", r, { once: true }); });
  win.location.reload();
  await p;

  is(win.location.hash, "#anchor", "We set the location's hash to 'anchor'");
  // Allow a half pixel difference because the scroll position is aligned with
  // screen pixels instead of CSS pixels (bug 1774315).
  isfuzzy(win.scrollY, 500, 0.5, "Reloading keeps scroll position");

  var link = win.document.getElementsByTagName('a')[0];
  var anchor = win.document.getElementsByTagName('a')[1];
  p = new Promise((r) => {
    var observer = new IntersectionObserver((entries) => {
      info("IntersectionObserver: entering callback")
      if (entries.some((entry) => entry.isIntersecting)) {
        info("IntersectionObserver: some entry isIntersecting; disconnecting")
        observer.disconnect();
        r();
      }
    });
    observer.observe(anchor);
  });
  win.document.body.offsetHeight;
  synthesizeMouseAtCenter(link, {type: "mousedown"}, win);
  synthesizeMouseAtCenter(link, {type: "mouseup"}, win);
  info("Sending click")
  sendMouseEvent({type: "click"}, link, win);
  await p;
  let actualScroll = win.scrollY;
  info("Promise resolved (for IntersectionObserver). win.scrollY is " +
       actualScroll);

  ok(actualScroll > 3000, "Scrolling after load works.");

  SimpleTest.finish();
}

  </script>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=851485">Mozilla Bug 851485</a>
<p id="display"></p>
<div id="content" style="display: none">
</div>
<pre id="test">
</pre>
<iframe src="file_bug842853.html"></iframe>
<script>

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

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