test_animations_pausing.html

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<html>

<head>

  <title>

    Test for Animation.play() and Animation.pause() on compositor animations

  </title>

  <script src="/tests/SimpleTest/SimpleTest.js"></script>

  <script src="/tests/SimpleTest/paint_listener.js"></script>

  <script type="application/javascript" src="animation_utils.js"></script>

  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css">

  <style type="text/css">

    @keyframes anim {

      0% { transform: translate(0px) }

      100% { transform: translate(100px) }

    .target {

      /* The animation target needs geometry in order to qualify for OMTA */

      width: 100px;

      height: 100px;

      background-color: white;

  </style>

</head>

<body>

<div id="display"></div>

<script type="application/javascript">

"use strict";

SimpleTest.waitForExplicitFinish();

runOMTATest(function() {

  runAllAsyncAnimTests().then(SimpleTest.finish);

}, SimpleTest.finish, SpecialPowers);

addAsyncAnimTest(async function() {

  var [ div, cs ] = new_div("animation: anim 10s 2 linear alternate");

  // Animation is initially running on compositor

  await waitForPaintsFlushed();

  advance_clock(1000);

  omta_is(div, "transform", { tx: 10 }, RunningOn.Compositor,

          "Animation is initally animating on compositor");

  // pause() means it is no longer on the compositor

  var animation = div.getAnimations()[0];

  animation.pause();

  // pause() should set up the changes to animations for the next layer

  // transaction but it won't schedule a paint immediately so we need to tick

  // the refresh driver before we can wait on the next paint.

  advance_clock(0);

  await waitForPaints();

  omta_is(div, "transform", { tx: 10 }, RunningOn.MainThread,

          "After pausing, animation is removed from compositor");

  // Animation remains paused

  advance_clock(1000);

  omta_is(div, "transform", { tx: 10 }, RunningOn.MainThread,

          "Animation remains paused");

  // play() puts the animation back on the compositor

  animation.play();

  // As with pause(), play() will set up pending animations for the next layer

  // transaction but won't schedule a paint so we need to tick the refresh

  // driver before waiting on the next paint.

  advance_clock(0);

  await waitForPaints();

  omta_is(div, "transform", { tx: 10 }, RunningOn.Compositor,

          "After playing, animation is sent to compositor");

  // Where it continues to run

  advance_clock(1000);

  omta_is(div, "transform", { tx: 20 }, RunningOn.Compositor,

          "Animation continues playing on compositor");

  done_div();

});

</script>

</body>

</html>