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Automatic update from web-platform-tests Replace assert_precondition with assert_implements in paint-timing/ assert_precondition is deprecated (see https://github.com/web-platform-tests/rfcs/blob/master/rfcs/assert_precondition_rename.md). Since PerformancePaintTiming is not an OPTIONAL part of the Paint Timing spec, these tests should use assert_implements. -- Replace assert_precondition with assert_implements in longtask-timing/ assert_precondition is deprecated (see https://github.com/web-platform-tests/rfcs/blob/master/rfcs/assert_precondition_rename.md). Since PerformanceLongTaskTiming is not an OPTIONAL part of the Long Tasks spec, these tests should use assert_implements. -- Replace assert_precondition with assert_implements in event-timing/ assert_precondition is deprecated (see https://github.com/web-platform-tests/rfcs/blob/master/rfcs/assert_precondition_rename.md). Since PerformanceElementTiming is not an OPTIONAL part of the Element Timing spec and EventCount is not an OPTIONAL part of the Event Timing spec, these tests should use assert_implements. -- Replace assert_precondition with assert_implements in element-timing/ assert_precondition is deprecated (see https://github.com/web-platform-tests/rfcs/blob/master/rfcs/assert_precondition_rename.md). Since PerformanceElementTiming is not an OPTIONAL part of the Element Timing spec, these tests should use assert_implements. -- wpt-commits: f3bf3bbd75dbab84e13406ddd86c6a7d00b39986, 4eee874b2c46f4ffff81112b8b3ff490e5092238, 67f7dd268503f106abdc8b38f617a4ba2f299f95, dcfc14df9aa42d2faa708598db34364ecd09b583 wpt-pr: 23004
26 lines
1.1 KiB
JavaScript
26 lines
1.1 KiB
JavaScript
async_test(function (t) {
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assert_implements(window.PerformanceLongTaskTiming, 'Longtasks are not supported.');
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new PerformanceObserver(
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t.step_func_done(entryList => {
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const entries = entryList.getEntries();
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assert_equals(entries.length, 1,
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'Exactly one entry is expected.');
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const longtask = entries[0];
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assert_equals(longtask.entryType, 'longtask');
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assert_equals(longtask.name, 'self');
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assert_greater_than(longtask.duration, 50);
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assert_greater_than_equal(longtask.startTime, 0);
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const currentTime = performance.now();
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assert_less_than_equal(longtask.startTime, currentTime);
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t.done();
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})
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).observe({entryTypes: ['longtask']});
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window.onload = () => {
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/* Generate a slow microtask */
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Promise.resolve().then(() => {
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const begin = window.performance.now();
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while (window.performance.now() < begin + 60);
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});
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};
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}, 'A short task followed by a long microtask is observable.');
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