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<!DOCTYPE HTML>
<html>
<head>
  <meta charset="utf-8">
  <title>Various keyboard scrolling tests</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <script type="application/javascript" src="apz_test_utils.js"></script>
  <script type="application/javascript" src="apz_test_native_event_utils.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
  <script type="application/javascript">

var bug1756529_prefs= [
  // Increase distance of line scroll (units here are "number of lines") so
  // that a smooth scroll animation reliably takes multiple frames.
  ["toolkit.scrollbox.verticalScrollDistance", 5],
  // The test performs a single-tap gesture between test cases to cancel the
  // animation from the previous test case. For test cases that run fast (e.g.
  // instant scrolling), two single-taps could occur close enough in succession
  // that they get interpreted as a double-tap.
  ["apz.allow_double_tap_zooming", false]
];

var subtests = [
  // Run helper_bug1756529.html twice, first exercising the main-thread keyboard
  // scrolling codepaths (e.g. PresShell::ScrollPage()), and once exercising the
  // APZ keyboard scrolling codepaths.
  {"file": "helper_bug1756529.html", prefs: bug1756529_prefs},
  {"file": "helper_bug1756529.html", prefs: [...bug1756529_prefs,
                                             ["test.events.async.enabled", true]]},
];

if (isKeyApzEnabled()) {
  SimpleTest.waitForExplicitFinish();
  window.onload = function() {
    runSubtestsSeriallyInFreshWindows(subtests)
    .then(SimpleTest.finish, SimpleTest.finishWithFailure);
  };
} else {
  SimpleTest.ok(true, "Keyboard APZ is disabled");
}
  </script>
</head>
<body>
  <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1383365">Async key scrolling test</a>
</body>
</html>