36 lines
1.4 KiB
HTML
36 lines
1.4 KiB
HTML
<!DOCTYPE html>
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<html>
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<meta charset=utf-8 />
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<title>Event Timing: first-input entry should be buffered even without observer</title>
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<button id='button'>Generate a 'click' event</button>
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<script src=/resources/testharness.js></script>
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<script src=/resources/testharnessreport.js></script>
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<script src=/resources/testdriver.js></script>
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<script src=/resources/testdriver-vendor.js></script>
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<script src=resources/event-timing-test-utils.js></script>
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<script>
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async_test(function(t) {
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assert_implements(window.PerformanceEventTiming, 'Event Timing is not supported.');
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function testEntries() {
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// First callback is not ensured to have the entry.
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if (performance.getEntriesByType('first-input').length === 0) {
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t.step_timeout(testEntries, 10);
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return;
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}
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assert_equals(performance.getEntriesByType('first-input').length, 1,
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"There should be a first-input entry in the performance timeline");
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const entry = performance.getEntriesByType('first-input')[0];
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assert_equals(entry.name, 'pointerdown');
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assert_equals(entry.entryType, 'first-input');
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assert_greater_than_equal(entry.duration, 104,
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"The first input was a long one.");
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t.done();
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}
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clickAndBlockMain('button').then(wait).then(t.step_func(testEntries));
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},
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"Event Timing: check first-input after onload, observer, click, click."
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);
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</script>
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</html>
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