<!doctype html>
<head>
<meta charset=utf-8>
<title>Bug 1045994 - Add a chrome-only property to inspect if an animation is
       running on the compositor or not</title>
<script type="application/javascript" src="../testharness.js"></script>
<script type="application/javascript" src="../testharnessreport.js"></script>
<script type="application/javascript" src="../testcommon.js"></script>
<style>
@keyframes anim {
  to { transform: translate(100px) }
}
@keyframes transform-starts-with-none {
    0% { transform: none }
   99% { transform: none }
  100% { transform: translate(100px) }
}
@keyframes opacity {
  to { opacity: 0 }
}
@keyframes zIndex_and_translate {
  to { z-index: 999; transform: translate(100px); }
}
@keyframes z-index {
  to { z-index: 999; }
}
@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
@keyframes rotate-and-opacity {
  from { transform: rotate(0deg); opacity: 1;}
  to { transform: rotate(360deg); opacity: 0;}
}
div {
  /* Element needs geometry to be eligible for layerization */
  width: 100px;
  height: 100px;
  background-color: white;
}
</style>
</head>
<body>
<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=1045994"
  target="_blank">Mozilla Bug 1045994</a>
<div id="log"></div>
<script>
'use strict';

/** Test for bug 1045994 - Add a chrome-only property to inspect if an
    animation is running on the compositor or not **/

const omtaEnabled = isOMTAEnabled();

function assert_animation_is_running_on_compositor(animation, desc) {
  assert_equals(animation.isRunningOnCompositor, omtaEnabled,
                desc + ' at ' + animation.currentTime + 'ms');
}

function assert_animation_is_not_running_on_compositor(animation, desc) {
  assert_equals(animation.isRunningOnCompositor, false,
                desc + ' at ' + animation.currentTime + 'ms');
}

promise_test(async t => {
  // FIXME: When we implement Element.animate, use that here instead of CSS
  // so that we remove any dependency on the CSS mapping.
  var div = addDiv(t, { style: 'animation: anim 100s' });
  var animation = div.getAnimations()[0];

  // If the animation starts at the current timeline time, we need to wait for
  // one more frame to avoid receiving the fake timer-based MozAfterPaint event.
  // FIXME: Bug 1419226: Drop this 'animation.ready' and 'waitForFrame'.  Once
  // MozAfterPaint is fired reliably, we just need to wait for a MozAfterPaint
  // here.
  await animation.ready;

  if (animationStartsRightNow(animation)) {
    await waitForNextFrame();
  }

  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
     'Animation reports that it is running on the compositor'
     + ' during playback');

  div.style.animationPlayState = 'paused';

  await animation.ready;

  assert_animation_is_not_running_on_compositor(animation,
     'Animation reports that it is NOT running on the compositor'
     + ' when paused');
}, '');

promise_test(async t => {
  var div = addDiv(t, { style: 'animation: z-index 100s' });
  var animation = div.getAnimations()[0];

  await waitForPaints();

  assert_animation_is_not_running_on_compositor(animation,
     'Animation reports that it is NOT running on the compositor'
     + ' for animation of "z-index"');
}, 'isRunningOnCompositor is false for animation of "z-index"');

promise_test(async t => {
  var div = addDiv(t, { style: 'animation: zIndex_and_translate 100s' });
  var animation = div.getAnimations()[0];

  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
     'Animation reports that it is running on the compositor'
      + ' when the animation has two properties, where one can run'
      + ' on the compositor, the other cannot');
}, 'isRunningOnCompositor is true if the animation has at least one ' +
   'property can run on compositor');

promise_test(async t => {
  var div = addDiv(t, { style: 'animation: anim 100s' });
  var animation = div.getAnimations()[0];

  await waitForPaints();

  animation.pause();
  await animation.ready;

  assert_animation_is_not_running_on_compositor(animation,
     'Animation reports that it is NOT running on the compositor'
     + ' when animation.pause() is called');
}, 'isRunningOnCompositor is false when the animation.pause() is called');

promise_test(async t => {
  var div = addDiv(t, { style: 'animation: anim 100s' });
  var animation = div.getAnimations()[0];

  await waitForPaints();

  animation.finish();
  assert_animation_is_not_running_on_compositor(animation,
     'Animation reports that it is NOT running on the compositor'
     + ' immediately after animation.finish() is called');
  // Check that we don't set the flag back again on the next tick.
  await waitForFrame();

  assert_animation_is_not_running_on_compositor(animation,
     'Animation reports that it is NOT running on the compositor'
     + ' on the next tick after animation.finish() is called');
}, 'isRunningOnCompositor is false when the animation.finish() is called');

promise_test(async t => {
  var div = addDiv(t, { style: 'animation: anim 100s' });
  var animation = div.getAnimations()[0];

  await waitForPaints();

  animation.currentTime = 100 * MS_PER_SEC;
  assert_animation_is_not_running_on_compositor(animation,
     'Animation reports that it is NOT running on the compositor'
     + ' immediately after manually seeking the animation to the end');
  // Check that we don't set the flag back again on the next tick.
  await waitForFrame();

  assert_animation_is_not_running_on_compositor(animation,
     'Animation reports that it is NOT running on the compositor'
     + ' on the next tick after manually seeking the animation to the end');
}, 'isRunningOnCompositor is false when manually seeking the animation to ' +
   'the end');

promise_test(async t => {
  var div = addDiv(t, { style: 'animation: anim 100s' });
  var animation = div.getAnimations()[0];

  await waitForPaints();

  animation.cancel();
  assert_animation_is_not_running_on_compositor(animation,
     'Animation reports that it is NOT running on the compositor'
     + ' immediately after animation.cancel() is called');
  // Check that we don't set the flag back again on the next tick.
  await waitForFrame();

  assert_animation_is_not_running_on_compositor(animation,
     'Animation reports that it is NOT running on the compositor'
     + ' on the next tick after animation.cancel() is called');
}, 'isRunningOnCompositor is false when animation.cancel() is called');

// This is to test that we don't simply clobber the flag when ticking
// animations and then set it again during painting.
promise_test(async t => {
  var div = addDiv(t, { style: 'animation: anim 100s' });
  var animation = div.getAnimations()[0];

  await waitForPaints();

  await new Promise(resolve => {
    window.requestAnimationFrame(() => {
      t.step(() => {
        assert_animation_is_running_on_compositor(animation,
          'Animation reports that it is running on the compositor'
           + ' in requestAnimationFrame callback');
      });

      resolve();
    });
  });
}, 'isRunningOnCompositor is true in requestAnimationFrame callback');

promise_test(async t => {
  var div = addDiv(t, { style: 'animation: anim 100s' });
  var animation = div.getAnimations()[0];

  await waitForPaints();

  await new Promise(resolve => {
    var observer = new MutationObserver(records => {
      var changedAnimation;

      records.forEach(record => {
        changedAnimation =
          record.changedAnimations.find(changedAnim => {
            return changedAnim == animation;
          });
      });

      t.step(() => {
        assert_true(!!changedAnimation, 'The animation should be recorded '
          + 'as one of the changedAnimations');

        assert_animation_is_running_on_compositor(animation,
          'Animation reports that it is running on the compositor'
           + ' in MutationObserver callback');
      });

      resolve();
    });
    observer.observe(div, { animations: true, subtree: false });
    t.add_cleanup(() => {
      observer.disconnect();
    });
    div.style.animationDuration = "200s";
  });
}, 'isRunningOnCompositor is true in MutationObserver callback');

// This is to test that we don't temporarily clear the flag when forcing
// an unthrottled sample.
promise_test(async t => {
  var div = addDiv(t, { style: 'animation: rotate 100s' });
  var animation = div.getAnimations()[0];

  await waitForPaints();

  await new Promise(resolve => {
    var timeAtStart = window.performance.now();
    function handleFrame() {
      t.step(() => {
        assert_animation_is_running_on_compositor(animation,
          'Animation reports that it is running on the compositor'
           + ' in requestAnimationFrame callback');
      });

      // we have to wait at least 200ms because this animation is
      // unthrottled on every 200ms.
      // See https://hg.mozilla.org/mozilla-central/file/cafb1c90f794/layout/style/AnimationCommon.cpp#l863
      if (window.performance.now() - timeAtStart > 200) {
        resolve();
        return;
      }
      window.requestAnimationFrame(handleFrame);
    }
    window.requestAnimationFrame(handleFrame);
  });
}, 'isRunningOnCompositor remains true in requestAnimationFrameCallback for ' +
   'overflow animation');

promise_test(async t => {
  var div = addDiv(t, { style: 'transition: opacity 100s; opacity: 1' });

  getComputedStyle(div).opacity;

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

  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
     'Transition reports that it is running on the compositor'
     + ' during playback for opacity transition');
}, 'isRunningOnCompositor for transitions');

promise_test(async t => {
  var div = addDiv(t, { style: 'animation: rotate-and-opacity 100s; ' +
                               'backface-visibility: hidden; ' +
                               'transform: none !important;' });
  var animation = div.getAnimations()[0];

  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
     'If an animation has a property that can run on the compositor and a '
     + 'property that cannot (due to Gecko limitations) but where the latter'
     + 'property is overridden in the CSS cascade, the animation should '
     + 'still report that it is running on the compositor');
}, 'isRunningOnCompositor is true when a property that would otherwise block ' +
   'running on the compositor is overridden in the CSS cascade');

promise_test(async t => {
  var animation = addDivAndAnimate(t,
                                   {},
                                   { opacity: [ 0, 1 ] }, 200 * MS_PER_SEC);

  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
    'Animation reports that it is running on the compositor');

  animation.currentTime = 150 * MS_PER_SEC;
  animation.effect.updateTiming({ duration: 100 * MS_PER_SEC });

  assert_animation_is_not_running_on_compositor(animation,
     'Animation reports that it is NOT running on the compositor'
     + ' when the animation is set a shorter duration than current time');
}, 'animation is immediately removed from compositor' +
   'when the duration is made shorter than the current time');

promise_test(async t => {
  var animation = addDivAndAnimate(t,
                                   {},
                                   { opacity: [ 0, 1 ] }, 100 * MS_PER_SEC);

  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
    'Animation reports that it is running on the compositor');

  animation.currentTime = 500 * MS_PER_SEC;

  assert_animation_is_not_running_on_compositor(animation,
    'Animation reports that it is NOT running on the compositor'
    + ' when finished');

  animation.effect.updateTiming({ duration: 1000 * MS_PER_SEC });
  await waitForFrame();

  assert_animation_is_running_on_compositor(animation,
    'Animation reports that it is running on the compositor'
    + ' when restarted');
}, 'animation is added to compositor' +
   ' when the duration is made longer than the current time');

promise_test(async t => {
  var animation = addDivAndAnimate(t,
                                   {},
                                   { opacity: [ 0, 1 ] }, 100 * MS_PER_SEC);

  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
    'Animation reports that it is running on the compositor');

  animation.effect.updateTiming({ endDelay: 100 * MS_PER_SEC });

  assert_animation_is_running_on_compositor(animation,
    'Animation reports that it is running on the compositor'
    + ' when endDelay is changed');

  animation.currentTime = 110 * MS_PER_SEC;
  await waitForFrame();

  assert_animation_is_not_running_on_compositor(animation,
    'Animation reports that it is NOT running on the compositor'
    + ' when currentTime is during endDelay');
}, 'animation is removed from compositor' +
   ' when current time is made longer than the duration even during endDelay');

promise_test(async t => {
  var animation = addDivAndAnimate(t,
                                   {},
                                   { opacity: [ 0, 1 ] }, 100 * MS_PER_SEC);

  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
    'Animation reports that it is running on the compositor');

  animation.effect.updateTiming({ endDelay: -200 * MS_PER_SEC });
  await waitForFrame();

  assert_animation_is_not_running_on_compositor(animation,
    'Animation reports that it is NOT running on the compositor'
    + ' when endTime is negative value');
}, 'animation is removed from compositor' +
   ' when endTime is negative value');

promise_test(async t => {
  var animation = addDivAndAnimate(t,
                                   {},
                                   { opacity: [ 0, 1 ] }, 200 * MS_PER_SEC);

  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
    'Animation reports that it is running on the compositor');

  animation.effect.updateTiming({ endDelay: -100 * MS_PER_SEC });
  await waitForFrame();

  assert_animation_is_running_on_compositor(animation,
    'Animation reports that it is running on the compositor'
    + ' when endTime is positive and endDelay is negative');
  animation.currentTime = 110 * MS_PER_SEC;
  await waitForFrame();

  assert_animation_is_not_running_on_compositor(animation,
    'Animation reports that it is NOT running on the compositor'
    + ' when currentTime is after endTime');
}, 'animation is NOT running on compositor' +
   ' when endTime is positive and endDelay is negative');

promise_test(async t => {
  var effect = new KeyframeEffect(null,
                                  { opacity: [ 0, 1 ] },
                                  100 * MS_PER_SEC);
  var animation = new Animation(effect, document.timeline);
  animation.play();

  var div = addDiv(t);

  await waitForPaints();

  assert_animation_is_not_running_on_compositor(animation,
                'Animation with null target reports that it is not running ' +
                'on the compositor');

  animation.effect.target = div;
  await waitForFrame();

  assert_animation_is_running_on_compositor(animation,
                'Animation reports that it is running on the compositor ' +
                'after setting a valid target');
}, 'animation is added to the compositor when setting a valid target');

promise_test(async t => {
  var div = addDiv(t);
  var animation = div.animate({ opacity: [ 0, 1 ] }, 100 * MS_PER_SEC);

  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
                'Animation reports that it is running on the compositor');

  animation.effect.target = null;
  assert_animation_is_not_running_on_compositor(animation,
                'Animation reports that it is NOT running on the ' +
                'compositor after setting null target');
}, 'animation is removed from the compositor when setting null target');

promise_test(async t => {
  var div = addDiv(t);
  var animation = div.animate({ opacity: [ 0, 1 ] },
                              { duration: 100 * MS_PER_SEC,
                                delay: 100 * MS_PER_SEC,
                                fill: 'backwards' });

  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
                'Animation with fill:backwards in delay phase reports ' +
                'that it is running on the compositor');

  animation.currentTime = 100 * MS_PER_SEC;
  await waitForFrame();

  assert_animation_is_running_on_compositor(animation,
      'Animation with fill:backwards in delay phase reports ' +
      'that it is running on the compositor after delay phase');
}, 'animation with fill:backwards in delay phase is running on the ' +
   ' compositor while it is in delay phase');

promise_test(async t => {
  const animation = addDiv(t).animate({ opacity: [ 0, 1 ] }, 100 * MS_PER_SEC);
  animation.playbackRate = -1;
  animation.currentTime = 200 * MS_PER_SEC;

  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
                'Animation with negative playback rate is runnning on the'
                + ' compositor even before it reaches the active interval');
}, 'animation with negative playback rate is sent to the compositor even in'
   + ' after phase');

promise_test(async t => {
  var div = addDiv(t);
  var animation = div.animate([{ opacity: 1, offset: 0 },
                               { opacity: 1, offset: 0.99 },
                               { opacity: 0, offset: 1 }], 100 * MS_PER_SEC);

  var another = addDiv(t);

  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
                'Opacity animation on a 100% opacity keyframe reports ' +
                'that it is running on the compositor from the begining');

  animation.effect.target = another;
  await waitForFrame();

  assert_animation_is_running_on_compositor(animation,
                'Opacity animation on a 100% opacity keyframe keeps ' +
                'running on the compositor after changing the target ' +
                'element');
}, '100% opacity animations with keeps running on the ' +
   'compositor after changing the target element');

promise_test(async t => {
  var div = addDiv(t);
  var animation = div.animate({ color: ['red', 'black'] }, 100 * MS_PER_SEC);

  await waitForPaints();

  assert_animation_is_not_running_on_compositor(animation,
                'Color animation reports that it is not running on the ' +
                'compositor');

  animation.effect.setKeyframes([{ opacity: 1, offset: 0 },
                                 { opacity: 1, offset: 0.99 },
                                 { opacity: 0, offset: 1 }]);
  await waitForFrame();

  assert_animation_is_running_on_compositor(animation,
                '100% opacity animation set by using setKeyframes reports ' +
                'that it is running on the compositor');
}, '100% opacity animation set up by converting an existing animation with ' +
   'cannot be run on the compositor, is running on the compositor');

promise_test(async t => {
  var div = addDiv(t);
  var animation = div.animate({ color: ['red', 'black'] }, 100 * MS_PER_SEC);
  var effect = new KeyframeEffect(div,
                                  [{ opacity: 1, offset: 0 },
                                   { opacity: 1, offset: 0.99 },
                                   { opacity: 0, offset: 1 }],
                                  100 * MS_PER_SEC);

  await waitForPaints();

  assert_animation_is_not_running_on_compositor(animation,
                'Color animation reports that it is not running on the ' +
                'compositor');

  animation.effect = effect;
  await waitForFrame();

  assert_animation_is_running_on_compositor(animation,
                '100% opacity animation set up by changing effects reports ' +
                'that it is running on the compositor');
}, '100% opacity animation set up by changing the effects on an existing ' +
   'animation which cannot be run on the compositor, is running on the ' +
   'compositor');

promise_test(async t => {
  var div = addDiv(t, { style: "opacity: 1 ! important" });

  var animation = div.animate({ opacity: [0, 1] }, 100 * MS_PER_SEC);

  await waitForPaints();

  assert_animation_is_not_running_on_compositor(animation,
    'Opacity animation on an element which has 100% opacity style with ' +
    '!important flag reports that it is not running on the compositor');
  // Clear important flag from the opacity style on the target element.
  div.style.setProperty("opacity", "1", "");
  await waitForFrame();

  assert_animation_is_running_on_compositor(animation,
    'Opacity animation reports that it is running on the compositor after '
    + 'clearing the !important flag');
}, 'Clearing *important* opacity style on the target element sends the ' +
   'animation to the compositor');

promise_test(async t => {
  var div = addDiv(t);
  var lowerAnimation = div.animate({ opacity: [1, 0] }, 100 * MS_PER_SEC);
  var higherAnimation = div.animate({ opacity: [0, 1] }, 100 * MS_PER_SEC);

  await waitForPaints();

  assert_animation_is_running_on_compositor(higherAnimation,
                'A higher-priority opacity animation on an element ' +
                'reports that it is running on the compositor');
  assert_animation_is_running_on_compositor(lowerAnimation,
                'A lower-priority opacity animation on the same ' +
                'element also reports that it is running on the compositor');
}, 'Opacity animations on the same element run on the compositor');

promise_test(async t => {
  var div = addDiv(t, { style: 'transition: opacity 100s; opacity: 1' });

  getComputedStyle(div).opacity;

  div.style.opacity = 0;
  getComputedStyle(div).opacity;

  var transition = div.getAnimations()[0];
  var animation = div.animate({ opacity: [0, 1] }, 100 * MS_PER_SEC);

  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
                'An opacity animation on an element reports that' +
                'that it is running on the compositor');
  assert_animation_is_running_on_compositor(transition,
                'An opacity transition on the same element reports that ' +
                'it is running on the compositor');
}, 'Both of transition and script animation on the same element run on the ' +
   'compositor');

promise_test(async t => {
  var div = addDiv(t);
  var importantOpacityElement = addDiv(t, { style: "opacity: 1 ! important" });

  var animation = div.animate({ opacity: [1, 0] }, 100 * MS_PER_SEC);

  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
                'Opacity animation on an element reports ' +
                'that it is running on the compositor');

  animation.effect.target = null;
  await waitForFrame();

  assert_animation_is_not_running_on_compositor(animation,
                'Animation is no longer running on the compositor after ' +
                'removing from the element');
  animation.effect.target = importantOpacityElement;
  await waitForFrame();

  assert_animation_is_not_running_on_compositor(animation,
                'Animation is NOT running on the compositor even after ' +
                'being applied to a different element which has an ' +
                '!important opacity declaration');
}, 'Animation continues not running on the compositor after being ' +
   'applied to an element which has an important declaration and ' +
   'having previously been temporarily associated with no target element');

promise_test(async t => {
  var div = addDiv(t);
  var another = addDiv(t);

  var lowerAnimation = div.animate({ opacity: [1, 0] }, 100 * MS_PER_SEC);
  var higherAnimation = another.animate({ opacity: [0, 1] }, 100 * MS_PER_SEC);

  await waitForPaints();

  assert_animation_is_running_on_compositor(lowerAnimation,
                'An opacity animation on an element reports that ' +
                'it is running on the compositor');
  assert_animation_is_running_on_compositor(higherAnimation,
                'Opacity animation on a different element reports ' +
                'that it is running on the compositor');

  lowerAnimation.effect.target = null;
  await waitForFrame();

  assert_animation_is_not_running_on_compositor(lowerAnimation,
                'Animation is no longer running on the compositor after ' +
                'being removed from the element');
  lowerAnimation.effect.target = another;
  await waitForFrame();

  assert_animation_is_running_on_compositor(lowerAnimation,
                'A lower-priority animation begins running ' +
                'on the compositor after being applied to an element ' +
                'which has a higher-priority animation');
  assert_animation_is_running_on_compositor(higherAnimation,
                'A higher-priority animation continues to run on the ' +
                'compositor even after a lower-priority animation is ' +
                'applied to the same element');
}, 'Animation begins running on the compositor after being applied ' +
   'to an element which has a higher-priority animation and after ' +
   'being temporarily associated with no target element');

promise_test(async t => {
  var div = addDiv(t);
  var another = addDiv(t);

  var lowerAnimation = div.animate({ opacity: [1, 0] }, 100 * MS_PER_SEC);
  var higherAnimation = another.animate({ opacity: [0, 1] }, 100 * MS_PER_SEC);

  await waitForPaints();

  assert_animation_is_running_on_compositor(lowerAnimation,
                'An opacity animation on an element reports that ' +
                'it is running on the compositor');
  assert_animation_is_running_on_compositor(higherAnimation,
                'Opacity animation on a different element reports ' +
                'that it is running on the compositor');

  higherAnimation.effect.target = null;
  await waitForFrame();

  assert_animation_is_not_running_on_compositor(higherAnimation,
                'Animation is no longer running on the compositor after ' +
                'being removed from the element');
  higherAnimation.effect.target = div;
  await waitForFrame();

  assert_animation_is_running_on_compositor(lowerAnimation,
                'Animation continues running on the compositor after ' +
                'a higher-priority animation applied to the same element');
  assert_animation_is_running_on_compositor(higherAnimation,
                'A higher-priority animation begins to running on the ' +
                'compositor after being applied to an element which has ' +
                'a lower-priority-animation');
}, 'Animation begins running on the compositor after being applied ' +
   'to an element which has a lower-priority animation once after ' +
   'disassociating with an element');

var delayPhaseTests = [
  {
    desc: 'script animation of opacity',
    setupAnimation: t => {
      return addDiv(t).animate(
        { opacity: [0, 1] },
        { delay: 100 * MS_PER_SEC, duration: 100 * MS_PER_SEC });
    },
  },
  {
    desc: 'script animation of transform',
    setupAnimation: t => {
      return addDiv(t).animate(
        { transform: ['translateX(0px)', 'translateX(100px)'] },
        { delay: 100 * MS_PER_SEC, duration: 100 * MS_PER_SEC });
    },
  },
  {
    desc: 'CSS animation of opacity',
    setupAnimation: t => {
      return addDiv(t, { style: 'animation: opacity 100s 100s' })
        .getAnimations()[0];
    },
  },
  {
    desc: 'CSS animation of transform',
    setupAnimation: t => {
      return addDiv(t, { style: 'animation: anim 100s 100s' })
        .getAnimations()[0];
    },
  },
  {
    desc: 'CSS transition of opacity',
    setupAnimation: t => {
      var div = addDiv(t, { style: 'transition: opacity 100s 100s' });
      getComputedStyle(div).opacity;

      div.style.opacity = 0;
      return div.getAnimations()[0];
    },
  },
  {
    desc: 'CSS transition of transform',
    setupAnimation: t => {
      var div = addDiv(t, { style: 'transition: transform 100s 100s' });
      getComputedStyle(div).transform;

      div.style.transform = 'translateX(100px)';
      return div.getAnimations()[0];
    },
  },
];

delayPhaseTests.forEach(test => {
  promise_test(async t => {
    var animation = test.setupAnimation(t);

    await waitForPaints();

    assert_animation_is_running_on_compositor(animation,
       test.desc + ' reports that it is running on the '
       + 'compositor even though it is in the delay phase');
  }, 'isRunningOnCompositor for ' + test.desc + ' is true even though ' +
     'it is in the delay phase');
});

// The purpose of thie test cases is to check that
// NS_FRAME_MAY_BE_TRANSFORMED flag on the associated nsIFrame persists
// after transform style on the frame is removed.
var delayPhaseWithTransformStyleTests = [
  {
    desc: 'script animation of transform with transform style',
    setupAnimation: t => {
      return addDiv(t, { style: 'transform: translateX(10px)' }).animate(
        { transform: ['translateX(0px)', 'translateX(100px)'] },
        { delay: 100 * MS_PER_SEC, duration: 100 * MS_PER_SEC });
    },
  },
  {
    desc: 'CSS animation of transform with transform style',
    setupAnimation: t => {
      return addDiv(t, { style: 'animation: anim 100s 100s;' +
                                'transform: translateX(10px)' })
        .getAnimations()[0];
    },
  },
  {
    desc: 'CSS transition of transform with transform style',
    setupAnimation: t => {
      var div = addDiv(t, { style: 'transition: transform 100s 100s;' +
                                   'transform: translateX(10px)'});
      getComputedStyle(div).transform;

      div.style.transform = 'translateX(100px)';
      return div.getAnimations()[0];
    },
  },
];

delayPhaseWithTransformStyleTests.forEach(test => {
  promise_test(async t => {
    var animation = test.setupAnimation(t);

    await waitForPaints();

    assert_animation_is_running_on_compositor(animation,
       test.desc + ' reports that it is running on the '
       + 'compositor even though it is in the delay phase');

    // Remove the initial transform style during delay phase.
    animation.effect.target.style.transform = 'none';
    await animation.ready;

    assert_animation_is_running_on_compositor(animation,
       test.desc + ' reports that it keeps running on the '
       + 'compositor after removing the initial transform style');
  }, 'isRunningOnCompositor for ' + test.desc + ' is true after removing ' +
     'the initial transform style during the delay phase');
});

var startsWithNoneTests = [
  {
    desc: 'script animation of transform starts with transform:none segment',
    setupAnimation: t => {
      return addDiv(t).animate(
        { transform: ['none', 'none', 'translateX(100px)'] }, 100 * MS_PER_SEC);
    },
  },
  {
    desc: 'CSS animation of transform starts with transform:none segment',
    setupAnimation: t => {
      return addDiv(t,
        { style: 'animation: transform-starts-with-none 100s 100s' })
          .getAnimations()[0];
    },
  },
];

startsWithNoneTests.forEach(test => {
  promise_test(async t => {
    var animation = test.setupAnimation(t);

    await waitForPaints();

    assert_animation_is_running_on_compositor(animation,
       test.desc + ' reports that it is running on the '
       + 'compositor even though it is in transform:none segment');
  }, 'isRunningOnCompositor for ' + test.desc + ' is true even though ' +
     'it is in transform:none segment');
});

promise_test(async t => {
  var div = addDiv(t, { style: 'opacity: 1 ! important' });

  var animation = div.animate(
    { opacity: [0, 1] },
    { delay: 100 * MS_PER_SEC, duration: 100 * MS_PER_SEC });

  await waitForPaints();

  assert_animation_is_not_running_on_compositor(animation,
    'Opacity animation on an element which has opacity:1 important style'
    + 'reports that it is not running on the compositor');
  // Clear the opacity style on the target element.
  div.style.setProperty("opacity", "1", "");
  await waitForFrame();

  assert_animation_is_running_on_compositor(animation,
    'Opacity animations reports that it is running on the compositor after '
    + 'clearing the opacity style on the element');
}, 'Clearing *important* opacity style on the target element sends the ' +
   'animation to the compositor even if the animation is in the delay phase');

promise_test(async t => {
  var opaqueDiv = addDiv(t, { style: 'opacity: 1 ! important' });
  var anotherDiv = addDiv(t);

  var animation = opaqueDiv.animate(
    { opacity: [0, 1] },
    { delay: 100 * MS_PER_SEC, duration: 100 * MS_PER_SEC });

  await waitForPaints();

  assert_animation_is_not_running_on_compositor(animation,
    'Opacity animation on an element which has opacity:1 important style'
    + 'reports that it is not running on the compositor');
  // Changing target element to another element which has no opacity style.
  animation.effect.target = anotherDiv;
  await waitForFrame();

  assert_animation_is_running_on_compositor(animation,
    'Opacity animations reports that it is running on the compositor after '
    + 'changing the target element to another elemenent having no '
    + 'opacity style');
}, 'Changing target element of opacity animation sends the animation to the ' +
   'the compositor even if the animation is in the delay phase');

promise_test(async t => {
  var animation =
    addDivAndAnimate(t,
                     {},
                     { width: ['100px', '200px'] },
                     { duration: 100 * MS_PER_SEC, delay: 100 * MS_PER_SEC });

  await waitForPaints();

  assert_animation_is_not_running_on_compositor(animation,
    'Width animation reports that it is not running on the compositor '
    + 'in the delay phase');
  // Changing to property runnable on the compositor.
  animation.effect.setKeyframes({ opacity: [0, 1] });
  await waitForFrame();

  assert_animation_is_running_on_compositor(animation,
    'Opacity animation reports that it is running on the compositor '
    + 'after changing the property from width property in the delay phase');
}, 'Dynamic change to a property runnable on the compositor ' +
   'in the delay phase');

promise_test(async t => {
  var div = addDiv(t, { style: 'transition: opacity 100s; ' +
                               'opacity: 0 !important' });
  getComputedStyle(div).opacity;

  div.style.setProperty('opacity', '1', 'important');
  getComputedStyle(div).opacity;

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

  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
     'Transition reports that it is running on the compositor even if the ' +
     'property is overridden by an !important rule');
}, 'Transitions override important rules');

promise_test(async t => {
  var div = addDiv(t, { style: 'transition: opacity 100s; ' +
                               'opacity: 0 !important' });
  getComputedStyle(div).opacity;

  div.animate({ opacity: [ 0, 1 ] }, 100 * MS_PER_SEC);

  div.style.setProperty('opacity', '1', 'important');
  getComputedStyle(div).opacity;

  var [transition, animation] = div.getAnimations();

  await waitForPaints();

  assert_animation_is_not_running_on_compositor(transition,
     'Transition suppressed by an animation which is overridden by an ' +
     '!important rule reports that it is NOT running on the compositor');
  assert_animation_is_not_running_on_compositor(animation,
     'Animation overridden by an !important rule reports that it is ' +
     'NOT running on the compositor');
}, 'Neither transition nor animation does run on the compositor if the ' +
   'property is overridden by an !important rule');

promise_test(async t => {
  var div = addDiv(t, { style: 'display: table' });
  var animation =
    div.animate({ transform: ['rotate(0deg)', 'rotate(360deg)'] },
                100 * MS_PER_SEC);

  await waitForAnimationReadyToRestyle(animation);

  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
    'Transform animation on display:table element should be running on the'
    + ' compositor');
}, 'Transform animation on display:table element runs on the compositor');

promise_test(async t => {
  const div = addDiv(t, { style: 'display: table' });
  const animation = div.animate(null, 100 * MS_PER_SEC);
  const effect = new KeyframeEffect(div,
                                    { transform: ['none', 'none']},
                                    100 * MS_PER_SEC);

  await waitForAnimationReadyToRestyle(animation);

  animation.effect = effect;

  await waitForNextFrame();
  await waitForPaints();

  assert_animation_is_running_on_compositor(
    animation,
    'Transform animation on table element should be running on the compositor'
  );
}, 'Empty transform effect assigned after the fact to display:table content'
   + ' runs on the compositor');

promise_test(async t => {
  const div = addDiv(t);
  const animation = div.animate({ backgroundColor: ['blue', 'green'] },
                                100 * MS_PER_SEC);

  await waitForAnimationReadyToRestyle(animation);
  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
    'background-color animation should be running on the compositor');
}, 'background-color animation runs on the compositor');

promise_test(async t => {
  const div = addDiv(t);
  const animation = div.animate({ backgroundColor: ['blue', 'green'] },
                                100 * MS_PER_SEC);

  await waitForAnimationReadyToRestyle(animation);
  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
    'background-color animation should be running on the compositor');

  // Add a red opaque background image covering the background color animation.
  div.style.backgroundImage =
    'url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAIAAAAC64' +
    'paAAAAG0lEQVR42mP8z0A%2BYKJA76jmUc2jmkc1U0EzACKcASfOgGoMAAAAAElFTkSuQmCC)';

  await waitForAnimationReadyToRestyle(animation);
  await waitForPaints();

  // Bug 1712246. We should optimize this case eventually.
  //assert_animation_is_not_running_on_compositor(animation,
  //  'Opaque background image stops background-color animations from running ' +
  //  'on the compositor');
}, 'Opaque background image stops background-color animations from running ' +
   ' on the compositor');

promise_test(async t => {
  await SpecialPowers.pushPrefEnv({
    set: [["gfx.omta.background-color", false]]
  });

  const div = addDiv(t);
  const animation = div.animate({ backgroundColor: ['blue', 'green'] },
                                100 * MS_PER_SEC);

  await waitForAnimationReadyToRestyle(animation);
  await waitForPaints();

  assert_animation_is_not_running_on_compositor(animation,
    'background-color animation should NOT be running on the compositor ' +
    'if the pref is disabled');
}, 'background-color animation does not run on the compositor if the pref ' +
   'is disabled');

promise_test(async t => {
  const div = addDiv(t);
  const animation = div.animate({ translate: ['0px', '100px'] },
                                100 * MS_PER_SEC);

  await waitForAnimationReadyToRestyle(animation);
  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
    'translate animation should be running on the compositor');
}, 'translate animation runs on the compositor');

promise_test(async t => {
  const div = addDiv(t);
  const animation = div.animate({ rotate: ['0deg', '45deg'] },
                                100 * MS_PER_SEC);

  await waitForAnimationReadyToRestyle(animation);
  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
    'rotate animation should be running on the compositor');
}, 'rotate animation runs on the compositor');

promise_test(async t => {
  const div = addDiv(t);
  const animation = div.animate({ scale: ['1 1', '2 2'] },
                                100 * MS_PER_SEC);

  await waitForAnimationReadyToRestyle(animation);
  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
    'scale animation should be running on the compositor');
}, 'scale animation runs on the compositor');

promise_test(async t => {
  const div = addDiv(t);
  const animation = div.animate({ translate: ['0px', '100px'],
                                  rotate: ['0deg', '45deg'],
                                  transform: ['translate(20px)',
                                              'translate(30px)'] },
                                100 * MS_PER_SEC);

  await waitForAnimationReadyToRestyle(animation);
  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
    'multiple transform-like properties animation should be running on the ' +
    'compositor');

  const properties = animation.effect.getProperties();
  properties.forEach(property => {
    assert_true(property.runningOnCompositor,
                property.property + ' is running on the compositor');
  });
}, 'Multiple transform-like properties animation runs on the compositor');

promise_test(async t => {
  const div = addDiv(t);
  const animation = div.animate({ offsetPath: ['none', 'none'] },
                                100 * MS_PER_SEC);

  await waitForAnimationReadyToRestyle(animation);
  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
    'offset-path animation should be running on the compositor even if ' +
    'it is always none');
}, 'offset-path none animation runs on the compositor');

promise_test(async t => {
  const div = addDiv(t);
  const animation = div.animate({ offsetPath: ['path("M0 0l100 100")',
                                               'path("M0 0l200 200")'] },
                                100 * MS_PER_SEC);

  await waitForAnimationReadyToRestyle(animation);
  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
    'offset-path:path() animation should be running on the compositor');
}, 'offset-path:path() animation runs on the compositor');

promise_test(async t => {
  const div = addDiv(t);
  const animation = div.animate({ offsetPath: ['ray(0deg)',
                                               'ray(180deg)'] },
                                100 * MS_PER_SEC);

  await waitForAnimationReadyToRestyle(animation);
  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
    'offset-path:ray() animation should be running on the compositor');
}, 'offset-path:ray() animation runs on the compositor');

promise_test(async t => {
  const div = addDiv(t);
  const animation = div.animate({ offsetPath: ['inset(0px)',
                                               'inset(10px)'] },
                                100 * MS_PER_SEC);

  await waitForAnimationReadyToRestyle(animation);
  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
    'offset-path:inset() animation should be running on the compositor');
}, 'offset-path:inset() animation runs on the compositor');

promise_test(async t => {
  const div = addDiv(t);
  const animation = div.animate({ offsetPath: ['circle(10px)',
                                               'circle(20px)'] },
                                100 * MS_PER_SEC);

  await waitForAnimationReadyToRestyle(animation);
  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
    'offset-path:circle() animation should be running on the compositor');
}, 'offset-path:circle() animation runs on the compositor');

promise_test(async t => {
  const div = addDiv(t);
  const animation = div.animate({ offsetPath: ['ellipse(10px 20px)',
                                               'ellipse(20px 40px)'] },
                                100 * MS_PER_SEC);

  await waitForAnimationReadyToRestyle(animation);
  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
    'offset-path:ellipse() animation should be running on the compositor');
}, 'offset-path:ellipse() animation runs on the compositor');

promise_test(async t => {
  const div = addDiv(t);
  const animation = div.animate({ offsetPath: ['polygon(0px 0px)',
                                               'polygon(50px 50px)'] },
                                100 * MS_PER_SEC);

  await waitForAnimationReadyToRestyle(animation);
  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
    'offset-path:polygon() animation should be running on the compositor');
}, 'offset-path:polygon() animation runs on the compositor');

promise_test(async t => {
  const div = addDiv(t);
  const animation = div.animate({ offsetPath: ['padding-box',
                                               'padding-box'] },
                                100 * MS_PER_SEC);

  await waitForAnimationReadyToRestyle(animation);
  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
    'offset-path:padding-box animation should be running on the compositor');
}, 'offset-path:padding-box animation runs on the compositor');

promise_test(async t => {
  const div = addDiv(t);
  const animation = div.animate({ offsetPath: ['content-box',
                                               'content-box'] },
                                100 * MS_PER_SEC);

  await waitForAnimationReadyToRestyle(animation);
  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
    'offset-path:content-box animation should be running on the compositor');
}, 'offset-path:content-box animation runs on the compositor');

promise_test(async t => {
  const div = addDiv(t);
  const animation = div.animate({ offsetPath: ['xywh(0% 0% 10px 10px)',
                                               'xywh(10% 10% 20px 20px)'] },
                                100 * MS_PER_SEC);

  await waitForAnimationReadyToRestyle(animation);
  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
    'offset-path:xywh() animation should be running on the compositor');
}, 'offset-path:xywh() animation runs on the compositor');

promise_test(async t => {
  const div = addDiv(t);
  const animation = div.animate({ offsetDistance: ['0%', '100%'] },
                                100 * MS_PER_SEC);

  await waitForAnimationReadyToRestyle(animation);
  await waitForPaints();

  assert_animation_is_not_running_on_compositor(animation,
    'offset-distance animation is not running on the compositor because ' +
    'offset-path is none');

  const newAnim = div.animate({ offsetPath: ['None', 'None'] },
                              100 * MS_PER_SEC);
  await waitForAnimationReadyToRestyle(newAnim);
  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
    'offset-distance animation should be running on the compositor');
  assert_animation_is_running_on_compositor(newAnim,
    'new added offset-path animation should be running on the compositor');
}, 'offset-distance animation runs on the compositor');

promise_test(async t => {
  const div = addDiv(t);
  const animation = div.animate({ offsetRotate: ['0deg', '45deg'] },
                                100 * MS_PER_SEC);

  await waitForAnimationReadyToRestyle(animation);
  await waitForPaints();

  assert_animation_is_not_running_on_compositor(animation,
    'offset-rotate animation is not running on the compositor because ' +
    'offset-path is none');

  const newAnim = div.animate({ offsetPath: ['None', 'None'] },
                              100 * MS_PER_SEC);
  await waitForAnimationReadyToRestyle(newAnim);
  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
    'offset-rotate animation should be running on the compositor');
  assert_animation_is_running_on_compositor(newAnim,
    'new added offset-path animation should be running on the compositor');
}, 'offset-rotate animation runs on the compositor');

promise_test(async t => {
  const div = addDiv(t);
  const animation = div.animate({ offsetAnchor: ['0% 0%', '100% 100%'] },
                                100 * MS_PER_SEC);

  await waitForAnimationReadyToRestyle(animation);
  await waitForPaints();

  assert_animation_is_not_running_on_compositor(animation,
    'offset-anchor animation is not running on the compositor because ' +
    'offset-path is none');

  const newAnim = div.animate({ offsetPath: ['None', 'None'] },
                              100 * MS_PER_SEC);
  await waitForAnimationReadyToRestyle(newAnim);
  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
    'offset-anchor animation should be running on the compositor');
  assert_animation_is_running_on_compositor(newAnim,
    'new added offset-path animation should be running on the compositor');
}, 'offset-anchor animation runs on the compositor');

promise_test(async t => {
  const div = addDiv(t);
  const animation = div.animate({ offsetPosition: ['0% 0%', '100% 100%'] },
                                100 * MS_PER_SEC);

  await waitForAnimationReadyToRestyle(animation);
  await waitForPaints();

  assert_animation_is_not_running_on_compositor(animation,
    'offset-position animation is not running on the compositor because ' +
    'offset-path is none');

  const newAnim = div.animate({ offsetPath: ['None', 'None'] },
                              100 * MS_PER_SEC);
  await waitForAnimationReadyToRestyle(newAnim);
  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
    'offset-position animation should be running on the compositor');
  assert_animation_is_running_on_compositor(newAnim,
    'new added offset-path animation should be running on the compositor');
}, 'offset-position animation runs on the compositor');

promise_test(async t => {
  const div = addDiv(t);
  const animation = div.animate({ translate: ['0px', '100px'],
                                  rotate: ['0deg', '45deg'],
                                  transform: ['translate(0px)',
                                              'translate(100px)'],
                                  offsetDistance: ['0%', '100%'] },
                                100 * MS_PER_SEC);
  await waitForAnimationReadyToRestyle(animation);
  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
    'Animation is running on the compositor even though we do not have ' +
    'offset-path');

  div.style.offsetPath = 'path("M50 0v100")';
  getComputedStyle(div).offsetPath;

  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
    'Animation is running on the compositor');

}, 'Multiple transform-like properties (include motion-path) animation runs ' +
   'on the compositor');

promise_test(async t => {
  const div = addDiv(t);
  const animation = div.animate({ translate: ['0px', '100px'],
                                  rotate: ['0deg', '45deg'],
                                  transform: ['translate(20px)',
                                              'translate(30px)'],
                                  offsetDistance: ['0%', '100%'] },
                                100 * MS_PER_SEC);

  div.style.setProperty('translate', '50px', 'important');
  getComputedStyle(div).translate;

  await waitForAnimationReadyToRestyle(animation);
  await waitForPaints();

  assert_animation_is_not_running_on_compositor(animation,
    'Animation overridden by an !important rule reports that it is ' +
    'NOT running on the compositor');

  const properties = animation.effect.getProperties();
  properties.forEach(property => {
    assert_true(!property.runningOnCompositor,
                property.property + ' is not running on the compositor');
  });
}, 'Multiple transform-like properties animation does not runs on the ' +
   'compositor because one of the transform-like property is overridden ' +
   'by an !important rule');

// FIXME:  Bug 1593106: We should still run the animations on the compositor if
// offset-* doesn't have any effect.
promise_test(async t => {
  const div = addDiv(t);
  const animation = div.animate({ translate: ['0px', '100px'],
                                  rotate: ['0deg', '45deg'],
                                  transform: ['translate(0px)',
                                              'translate(100px)'],
                                  offsetDistance: ['0%', '100%'] },
                                100 * MS_PER_SEC);

  div.style.setProperty('offset-distance', '50%', 'important');
  getComputedStyle(div).offsetDistance;

  await waitForAnimationReadyToRestyle(animation);
  await waitForPaints();

  assert_animation_is_not_running_on_compositor(animation,
    'Animation overridden by an !important rule reports that it is ' +
    'NOT running on the compositor');

  const properties = animation.effect.getProperties();
  properties.forEach(property => {
    assert_true(!property.runningOnCompositor,
                property.property + ' is not running on the compositor');
  });
}, 'Multiple transform-like properties animation does not runs on the ' +
   'compositor because one of the offset-* property is overridden ' +
   'by an !important rule');

promise_test(async t => {
  const div = addDiv(t);
  const animation = div.animate({ rotate: ['0deg', '45deg'],
                                  transform: ['translate(20px)',
                                              'translate(30px)'],
                                  offsetDistance: ['0%', '100%'] },
                                100 * MS_PER_SEC);

  div.style.setProperty('translate', '50px', 'important');
  getComputedStyle(div).translate;

  await waitForAnimationReadyToRestyle(animation);
  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
    'Animation is still running on the compositor');

  const properties = animation.effect.getProperties();
  properties.forEach(property => {
    assert_true(property.runningOnCompositor,
                property.property + ' is running on the compositor');
  });
}, 'Multiple transform-like properties animation still runs on the ' +
   'compositor because the overridden-by-!important property does not have ' +
   'animation');

promise_test(async t => {
  // We should run the animations on the compositor for this case:
  // 1. A transition of 'translate'
  // 2. An !important rule on 'translate'
  // 3. An animation of 'scale'
  const div = addDiv(t, { style: 'translate: 100px !important;' });
  const animation = div.animate({ rotate: ['0deg', '45deg'] },
                                100 * MS_PER_SEC);
  div.style.transition = 'translate 100s';
  getComputedStyle(div).transition;

  await waitForAnimationReadyToRestyle(animation);
  await waitForPaints();

  assert_animation_is_running_on_compositor(animation,
    'rotate animation should be running on the compositor');

  div.style.setProperty('translate', '200px', 'important');
  getComputedStyle(div).translate;

  const anims = div.getAnimations();
  await waitForPaints();

  assert_animation_is_running_on_compositor(anims[0],
    `${anims[0].effect.getProperties()[0].property} animation should be ` +
    `running on the compositor`);
  assert_animation_is_running_on_compositor(anims[1],
    `${anims[1].effect.getProperties()[0].property} animation should be ` +
    `running on the compositor`);
}, 'Transform-like animations and transitions still runs on the compositor ' +
   'because the !important rule is overridden by a transition, and the ' +
   'transition property does not have animations');

promise_test(async t => {
  const container = addDiv(t, { style: 'transform-style: preserve-3d;' });
  const targetA = addDiv(t, { style: 'transform-style: preserve-3d' });
  const targetB = addDiv(t, { style: 'transform-style: preserve-3d' });
  const targetC = addDiv(t);
  container.appendChild(targetA);
  targetA.append(targetB);
  targetB.append(targetC);

  const animation1 = targetA.animate({ rotate: ['0 0 1 0deg', '1 1 1 45deg'] },
                                     100 * MS_PER_SEC);

  const animation2 = targetC.animate({ rotate: ['0 0 1 0deg', '0 1 1 100deg'] },
                                     100 * MS_PER_SEC);

  await waitForAnimationReadyToRestyle(animation1);
  await waitForAnimationReadyToRestyle(animation2);
  await waitForPaints();

  assert_animation_is_running_on_compositor(animation1,
    'rotate animation in the 3d rendering context should be running on the ' +
    'compositor');
  assert_animation_is_running_on_compositor(animation2,
    'rotate animation in the 3d rendering context should be running on the ' +
    'compositor');
}, 'Transform-like animations in the 3d rendering context should runs on the ' +
   'compositor');

promise_test(async t => {
  const container = addDiv(t, { style: 'transform-style: preserve-3d;' });
  const target = addDiv(t, { style: 'transform-style: preserve-3d;' });
  const innerA = addDiv(t, { style: 'width: 50px; height: 50px;' });
  // The frame of innerB is too large, so this makes its ancenstors and children
  // in the 3d context be not allowed the async animations.
  const innerB = addDiv(t, { style: 'rotate: 0 1 1 100deg; ' +
                                    'transform-style: preserve-3d; ' +
                                    'text-indent: -9999em' });
  const innerB2 = addDiv(t, { style: 'rotate: 0 1 1 45deg;' });
  const innerBText = document.createTextNode("innerB");
  container.appendChild(target);
  target.appendChild(innerA);
  target.appendChild(innerB);
  innerB.appendChild(innerBText);
  innerB.appendChild(innerB2);

  const animation1 = target.animate({ rotate: ['0 0 1 0deg', '1 1 1 45deg'] },
                                    100 * MS_PER_SEC);

  const animation2 = innerA.animate({ rotate: ['0 0 1 0deg', '0 1 1 100deg'] },
                                    100 * MS_PER_SEC);

  const animation3 = innerB2.animate({ rotate: ['0 0 1 0deg', '0 1 1 90deg'] },
                                     100 * MS_PER_SEC);

  await waitForAnimationReadyToRestyle(animation1);
  await waitForAnimationReadyToRestyle(animation2);
  await waitForAnimationReadyToRestyle(animation3);
  await waitForPaints();

  const isPartialPrerenderEnabled =
    SpecialPowers.getBoolPref('layout.animation.prerender.partial');

  if (isPartialPrerenderEnabled) {
    assert_animation_is_running_on_compositor(animation1,
      'rotate animation in the 3d rendering context should be running on ' +
      'the compositor even if one of its inner frames is too large');
    assert_animation_is_running_on_compositor(animation2,
      'rotate animation in the 3d rendering context is still running on ' +
      'the compositor because its display item is created earlier');
    assert_animation_is_running_on_compositor(animation3,
      'rotate animation in the 3d rendering context should be running on ' +
      'the compositor even if one of its parent frames is too large');
  } else {
    assert_animation_is_not_running_on_compositor(animation1,
      'rotate animation in the 3d rendering context should not be running on ' +
      'the compositor because one of its inner frames is too large');
    assert_animation_is_running_on_compositor(animation2,
      'rotate animation in the 3d rendering context is still running on ' +
      'the compositor because its display item is created earlier');
    assert_animation_is_not_running_on_compositor(animation3,
      'rotate animation in the 3d rendering context should not be running on ' +
      'the compositor because one of its parent frames is too large');
  }
  innerBText.remove();
}, 'Transform-like animations in the 3d rendering context should run on ' +
   'the compositor even if it is the ancestor of ones whose frames are too ' +
   'large or its ancestor is not allowed to run on the compositor');

promise_test(async t => {
  const container = addDiv(t, { style: 'transform-style: preserve-3d;' });
  const target = addDiv(t, { style: 'transform-style: preserve-3d;' });
  // The frame of innerA is too large, so this makes its ancenstors and children
  // in the 3d context be not allowed the async animations.
  const innerA = addDiv(t, { style: 'transform-style: preserve-3d; ' +
                                    'text-indent: -9999em' });
  const innerAText = document.createTextNode("innerA");
  const innerB = addDiv(t, { style: 'width: 50px; height: 50px;' });
  container.appendChild(target);
  target.appendChild(innerA);
  target.appendChild(innerB);
  innerA.appendChild(innerAText);

  const animation1 = target.animate({ rotate: ['0 0 1 0deg', '1 1 1 45deg'] },
                                    100 * MS_PER_SEC);

  const animation2 = innerA.animate({ rotate: ['0 0 1 0deg', '0 1 1 100deg'] },
                                    100 * MS_PER_SEC);

  const animation3 = innerB.animate({ rotate: ['0 0 1 0deg', '0 1 1 90deg'] },
                                    100 * MS_PER_SEC);

  await waitForAnimationReadyToRestyle(animation1);
  await waitForAnimationReadyToRestyle(animation2);
  await waitForAnimationReadyToRestyle(animation3);
  await waitForPaints();

  const isPartialPrerenderEnabled =
    SpecialPowers.getBoolPref('layout.animation.prerender.partial');

  if (isPartialPrerenderEnabled) {
    assert_animation_is_running_on_compositor(animation1,
      'rotate animation in the 3d rendering context should be running on ' +
      'the compositor even if one of its inner frames is too large');
    assert_animation_is_running_on_compositor(animation2,
      'rotate animation in the 3d rendering context should be running on ' +
      'the compositor even if its frame size is too large');
    assert_animation_is_running_on_compositor(animation3,
      'rotate animation in the 3d rendering context should be running on ' +
      'the compositor even if its previous sibling frame is too large');
  } else {
    assert_animation_is_not_running_on_compositor(animation1,
      'rotate animation in the 3d rendering context should not be running on ' +
      'the compositor because one of its inner frames is too large');
    assert_animation_is_not_running_on_compositor(animation2,
      'rotate animation in the 3d rendering context should not be running on ' +
      'the compositor because its frame size is too large');
    assert_animation_is_not_running_on_compositor(animation3,
      'rotate animation in the 3d rendering context should not be running on ' +
      'the compositor because its previous sibling frame is too large');
  }
  innerAText.remove();
}, 'Transform-like animations in the 3d rendering context should run on ' +
   'the compositor even if its previous sibling frame size is too large');

</script>
</body>
