51 lines
1.5 KiB
HTML
51 lines
1.5 KiB
HTML
<!doctype html>
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<meta charset=utf-8>
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<script src="../testcommon.js"></script>
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<body>
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<script>
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'use strict';
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function getMarginLeft(cs) {
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return parseFloat(cs.marginLeft);
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}
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async_test(function(t) {
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var div = addDiv(t);
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var cs = window.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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assert_equals(getMarginLeft(cs), 0,
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'Initial value of margin-left is zero');
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var previousAnimVal = getMarginLeft(cs);
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animation.ready.then(waitForFrame).then(t.step_func(function() {
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assert_true(getMarginLeft(cs) > previousAnimVal,
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'margin-left 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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previousAnimVal = getMarginLeft(cs);
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return waitForFrame();
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})).then(t.step_func(function() {
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assert_equals(getMarginLeft(cs), previousAnimVal,
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'margin-left does not increase after calling pause()');
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previousAnimVal = getMarginLeft(cs);
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animation.play();
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return animation.ready.then(waitForFrame);
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})).then(t.step_func(function() {
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assert_true(getMarginLeft(cs) > previousAnimVal,
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'margin-left 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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done();
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</script>
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</body>
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