28 lines
1 KiB
HTML
28 lines
1 KiB
HTML
<!DOCTYPE HTML>
|
|
<meta charset=utf-8>
|
|
<title>Long Animation Frame Timing: basic</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: buffered</h1>
|
|
<div id="log"></div>
|
|
<script>
|
|
promise_test(async t => {
|
|
busy_wait(very_long_frame_duration);
|
|
await new Promise(resolve => t.step_timeout(resolve, 0));
|
|
const result = await new Promise(resolve => {
|
|
new PerformanceObserver(t.step_func(entries => {
|
|
for (const e of entries.getEntries()) {
|
|
if (e.duration >= very_long_frame_duration)
|
|
resolve("entry-found");
|
|
}
|
|
})).observe({type: 'long-animation-frame', buffered: true});
|
|
t.step_timeout(() => resolve("timeout"), waiting_for_long_frame_timeout);
|
|
});
|
|
assert_equals(result, "entry-found");
|
|
}, 'PerformanceObserver with buffered flag can see previous long-animation-frame entries.');
|
|
</script>
|
|
</body>
|