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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /long-animation-frame/tentative/loaf-paint-mixin.html - WPT Dashboard Interop Dashboard
<!DOCTYPE HTML>
<meta charset=utf-8>
<title>Long Animation Frame Timing: paint mixin</title>
<meta name="timeout" content="long">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/utils.js"></script>
<body>
<h1>Long Animation Frame: paint mixin</h1>
<div id="log"></div>
<script>
promise_test(async t => {
assert_implements("paintTime" in window.PerformanceLongAnimationFrameTiming.prototype, "PerformanceLongAnimationFrameTiming doesn't expose `paintTime`");
document.querySelector("#log").innerText = "Text";
const entry = await generate_long_animation_frame();
assert_equals(entry.paintTime, entry.startTime + entry.duration);
assert_greater_than(entry.presentationTime, entry.paintTime);
}, 'A LoAF that generates a frame should have paintTime/presentationTime');
</script>
</body>