1081072-1.html - mozsearch

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<!DOCTYPE html>

<html class="reftest-wait">

<head>

  <!-- NOTE: This bug was triggered by scrollbar opacity-fading, so this

       testcase needs to be loaded with this pref...

           layout.testing.overlay-scrollbars.always-visible

       ...set to *false* in order to have a chance to trigger the bug.

       We don't have to worry about this producing any screenshots of

       unpredictable partially-faded-scrollbars in our reftest snapshot,

       because our scrollbars don't actually paint here, since the

       scrollable element has "overflow:auto" and doesn't overflow

       (because it's auto-sized to fit its content). -->

  <style>

    .container {

      display: flex;

      overflow-y: auto;

      border: 1px solid black;

  </style>

  <script type='text/javascript'>

    window.addEventListener("MozReftestInvalidate", startTest);

    function startTest() {

      // NOTE: setTimeout in tests is evil, but it's necessary here -- we need

      // to wait until the scrollbars have finished fading, and there's no

      // event we can listen for to signal that, AFAIK. Fortunately, there

      // shouldn't be *visible* scrollbars in this testcase, so even if our

      // setTimeout fires too early/late, the test will still pass. (So, there

      // shouldn't be spurious failures; any failures that happen will be real.)

      setTimeout(endTest, 800);

    function endTest() {

      document.documentElement.removeAttribute("class");

  </script>

</head>

<body>

  <div class="container">

    <div>T</div>

  </div>

</body>

</html>