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<!DOCTYPE html>
<meta charset=utf-8>
<title>iterationStart tests</title>
<link rel="help" href="https://w3c.github.io/web-animations/#dom-animationeffecttiming-iterationstart">
<link rel="author" title="Daisuke Akatsuka" href="mailto:daisuke@mozilla-japan.org">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../../testcommon.js"></script>
<body>
<div id="log"></div>
<script>
'use strict';
test(function(t) {
var div = createDiv(t);
var anim = div.animate({ opacity: [ 0, 1 ] },
{ iterationStart: 0.2,
iterations: 1,
fill: 'both',
duration: 100,
delay: 1 });
anim.effect.timing.iterationStart = 2.5;
assert_equals(anim.effect.getComputedTiming().progress, 0.5);
assert_equals(anim.effect.getComputedTiming().currentIteration, 2);
}, 'Test that changing the iterationStart affects computed timing ' +
'when backwards-filling');
test(function(t) {
var div = createDiv(t);
var anim = div.animate({ opacity: [ 0, 1 ] },
{ iterationStart: 0.2,
iterations: 1,
fill: 'both',
duration: 100,
delay: 0 });
anim.effect.timing.iterationStart = 2.5;
assert_equals(anim.effect.getComputedTiming().progress, 0.5);
assert_equals(anim.effect.getComputedTiming().currentIteration, 2);
}, 'Test that changing the iterationStart affects computed timing ' +
'during the active phase');
test(function(t) {
var div = createDiv(t);
var anim = div.animate({ opacity: [ 0, 1 ] },
{ iterationStart: 0.2,
iterations: 1,
fill: 'both',
duration: 100,
delay: 0 });
anim.finish();
anim.effect.timing.iterationStart = 2.5;
assert_equals(anim.effect.getComputedTiming().progress, 0.5);
assert_equals(anim.effect.getComputedTiming().currentIteration, 3);
}, 'Test that changing the iterationStart affects computed timing ' +
'when forwards-filling');
test(function(t) {
var div = createDiv(t);
var anim = div.animate({ opacity: [ 0, 1 ] }, 100);
assert_throws({ name: 'TypeError' },
function() {
anim.effect.timing.iterationStart = -1;
});
assert_throws({ name: 'TypeError' },
function() {
div.animate({ opacity: [ 0, 1 ] },
{ iterationStart: -1 });
});
}, 'Test invalid iterationStart value');
</script>
</body>
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