eecc3b000d
See the description in this changeset's parent which describes why we do this in two steps. MozReview-Commit-ID: GtO0SCb0UOF
51 lines
1.8 KiB
HTML
51 lines
1.8 KiB
HTML
<!doctype html>
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<meta charset=utf-8>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="../testcommon.js"></script>
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<body>
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<div id="log"></div>
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<script>
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'use strict';
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async_test(function(t) {
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var div = addDiv(t);
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var cs = getComputedStyle(div);
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div.style.marginLeft = '0px';
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cs.marginLeft; // Flush style to set up transition start point
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div.style.transition = 'margin-left 100s';
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div.style.marginLeft = '10000px';
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cs.marginLeft;
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var animation = div.getAnimations()[0];
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var previousProgress = animation.effect.getComputedTiming().progress;
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assert_equals(previousProgress, 0, 'Initial value of progress is zero');
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animation.ready.then(waitForNextFrame).then(t.step_func(function() {
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assert_greater_than(animation.effect.getComputedTiming().progress,
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previousProgress,
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'Iteration progress is initially increasing');
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animation.pause();
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return animation.ready;
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})).then(t.step_func(function() {
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previousProgress = animation.effect.getComputedTiming().progress;
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return waitForNextFrame();
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})).then(t.step_func(function() {
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assert_equals(animation.effect.getComputedTiming().progress,
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previousProgress,
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'Iteration progress does not increase after calling pause()');
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previousProgress = animation.effect.getComputedTiming().progress;
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animation.play();
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return animation.ready.then(waitForNextFrame);
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})).then(t.step_func(function() {
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assert_greater_than(animation.effect.getComputedTiming().progress,
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previousProgress,
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'Iteration progress increases after calling play()');
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t.done();
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}));
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}, 'pause() and play() a transition');
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</script>
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</body>
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