34 lines
1.3 KiB
HTML
34 lines
1.3 KiB
HTML
<!DOCTYPE html>
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<html>
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<meta charset=utf-8 />
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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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<button id='the_button'>ClickMe</button>
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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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const observer = new PerformanceObserver(t.step_func_done((entryList) => {
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const entries = entryList.getEntries().filter(e => e.name === 'pointerdown');
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if (entries.length === 0)
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return;
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// There must only be one click entry.
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assert_equals(entries.length, 1);
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const entry = entries[0];
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// This checks that entry.target returns the correct button Node.
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verifyClickEvent(entry, 'the_button', true);
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const button = document.getElementById('the_button');
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button.parentNode.removeChild(button);
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// After removing the button, entry.target should now return null.
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assert_equals(entry.target, null);
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}));
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observer.observe({entryTypes: ['event']});
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clickAndBlockMain('the_button');
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}, "Event Timing: when target is disconnected, entry.target returns null.");
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</script>
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</html>
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