49 lines
1.2 KiB
HTML
49 lines
1.2 KiB
HTML
<!DOCTYPE HTML>
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<html>
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<head>
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<script src="../resources/js-test-pre.js"></script>
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</head>
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<body>
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<script>
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description("Test PerformanceObserver callback is a task, not a microtask.");
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window.jsTestIsAsync = true;
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window.microtaskExecuted = false;
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window.callbackCount = 0;
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window.list = null;
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let observer = new PerformanceObserver((list) => {
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window.list = list;
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callbackCount++;
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testPassed("PerformanceObserver callback fired");
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if (callbackCount === 1) {
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shouldBeFalse(`microtaskExecuted`);
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shouldBe(`list.getEntries().length`, `1`);
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performance.mark("mark2");
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Promise.resolve().then(() => {
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testPassed("Promise microtask fired");
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microtaskExecuted = true;
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performance.mark("mark3");
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});
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return;
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}
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if (callbackCount === 2) {
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shouldBe(`list.getEntries().length`, `2`);
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shouldBeTrue(`microtaskExecuted`);
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finishJSTest();
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return;
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}
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testFailed("Callback should not have fired again");
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});
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observer.observe({entryTypes: ["mark"]});
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performance.mark("mark1");
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</script>
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<script src="../resources/js-test-post.js"></script>
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</body>
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</html>
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