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<!DOCTYPE html>
<link rel=author href="mailto:jarhar@chromium.org">
<link rel=help href="https://github.com/w3c/csswg-drafts/issues/4441">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/css-animations/support/testcommon.js"></script>
<div class=testcase id=discrete>Allow discrete</div>
<div class=testcase id=normal>No discrete</div>
<style>
.testcase {
float: left;
width: 100px;
height: 100px;
transition: all 1s;
}
#discrete {
transition-behavior: allow-discrete;
}
.animated {
float: right;
}
</style>
<script>
promise_test(async () => {
await waitForAnimationFrames(2);
// Regression test for https://crbug.com/1518561
normal.classList.add('animated');
const normalAnims = normal.getAnimations();
assert_equals(normalAnims.length, 0,
"Started a discrete property transition on a normal element");
discrete.classList.add('animated');
const anims = discrete.getAnimations();
assert_equals(anims.length, 1,
"Did not start a discrete-property transition");
assert_equals(anims[0].transitionProperty, 'float');
}, 'transition:all with transition-behavior:allow-discrete should animate discrete properties.');
</script>
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