37 lines
1.3 KiB
HTML
37 lines
1.3 KiB
HTML
<!DOCTYPE HTML>
|
|
<meta charset=utf-8>
|
|
<title>LongTask Timing: long task in nested child iframe</title>
|
|
<body>
|
|
|
|
<script src="/resources/testharness.js"></script>
|
|
<script src="/resources/testharnessreport.js"></script>
|
|
|
|
<script>
|
|
const t = async_test(t => {
|
|
assert_implements(window.PerformanceLongTaskTiming, 'Longtasks are not supported.');
|
|
window.addEventListener('message', t.step_func(e => {
|
|
assert_equals(e.data['entryType'], 'longtask');
|
|
assert_equals(e.data['frame-attribution'], 'same-origin-ancestor');
|
|
assert_equals(e.data['task-attribution'], 'unknown');
|
|
assert_equals(e.data['containerType'], 'window');
|
|
assert_equals(e.data['containerId'], '');
|
|
assert_equals(e.data['containerName'], '');
|
|
assert_equals(e.data['containerSrc'], '');
|
|
t.done();
|
|
}));
|
|
}, 'Performance longtask entries in parent are observable in child iframe.');
|
|
|
|
const iframe = document.createElement('iframe');
|
|
iframe.id = 'child-iframe-id';
|
|
iframe.name = 'child-iframe-name';
|
|
document.body.appendChild(iframe);
|
|
iframe.src = 'resources/subframe-observing-longtask.html';
|
|
iframe.onload = () => {
|
|
t.step_timeout( () => {
|
|
const begin = window.performance.now();
|
|
while (window.performance.now() < begin + 60);
|
|
}, 50);
|
|
};
|
|
</script>
|
|
|
|
</body>
|