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51 lines
2 KiB
HTML
51 lines
2 KiB
HTML
<!DOCTYPE html>
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<html>
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<meta charset=utf-8 />
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<div id='div' onclick='delay()'>Click me</div>
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<div id='div2'>No, click me!</div>
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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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let delayCalled = false;
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let beforeClick;
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function delay() {
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const end = performance.now() + 150;
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while(performance.now() < end) {}
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delayCalled = true;
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}
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promise_test(function(t) {
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assert_implements(window.PerformanceEventTiming, 'Event Timing is not supported.');
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let observedMouseDown = false;
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const observerPromise = new Promise(resolve => {
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const observer = new PerformanceObserver(t.step_func(entryList => {
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const mouseDowns = entryList.getEntriesByName('mousedown');
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// Ignore cases in which there is no mousedown.
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if (mouseDowns.length === 0)
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return;
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assert_false(observedMouseDown, 'There must only be one mousedown entry.');
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assert_equals(mouseDowns.length, 1);
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const entry = mouseDowns[0];
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// This ensures that the entry is exposing timing from the second click, i.e.
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// the one from the clickAndBlockMain() call.
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assert_greater_than_equal(entry.processingStart, beforeClick);
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verifyClickEvent(entry, 'div2', true);
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observedMouseDown = true;
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resolve();
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}));
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observer.observe({entryTypes: ['event']});
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});
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document.getElementById('div').click();
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// Take the timestamp after the programmatic click but before the next click.
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beforeClick = performance.now();
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// After the programmatic click, use another input to know when entries have been
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// dispatched to the PerformanceObserver callback.
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const clickPromise = clickAndBlockMain('div2');
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return Promise.all([observerPromise, clickPromise]);
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}, "Event Timing: events from programmatic click are not observed");
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</script>
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</html>
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