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58 lines
2.1 KiB
HTML
58 lines
2.1 KiB
HTML
<!DOCTYPE HTML>
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<meta charset=utf-8>
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<title>PerformanceObservers: observe</title>
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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="performanceobservers.js"></script>
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<h1>PerformanceObservers: observe</h1>
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<div id="log"></div>
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<script>
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test(function () {
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var obs = new PerformanceObserver(function () { return true; });
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assert_throws(new TypeError(), function () {
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obs.observe({});
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});
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assert_throws(new TypeError(), function () {
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obs.observe({entryType: []});
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});
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}, "no entryTypes throws a TypeError");
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test(function () {
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var obs = new PerformanceObserver(function () { return true; });
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assert_throws(new TypeError(), function () {
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obs.observe({entryTypes: "mark"});
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});
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assert_throws(new TypeError(), function () {
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obs.observe({entryTypes: []});
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});
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assert_throws(new TypeError(), function () {
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obs.observe({entryTypes: ["this-cannot-match-an-entryType"]});
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});
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assert_throws(new TypeError(), function () {
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obs.observe({entryTypes: ["marks","navigate", "resources"]});
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});
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}, "Empty sequence entryTypes throws a TypeError");
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test(function () {
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var obs = new PerformanceObserver(function () { return true; });
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obs.observe({entryTypes: ["mark","this-cannot-match-an-entryType"]});
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obs.observe({entryTypes: ["this-cannot-match-an-entryType","mark"]});
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obs.observe({entryTypes: ["mark"], others: true});
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}, "Filter unsupported entryType entryType names within the entryTypes sequence");
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async_test(function (t) {
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var observer = new PerformanceObserver(
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t.step_func(function (entryList, obs) {
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assert_equals(observer, obs, "observer is second parameter");
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checkEntries(entryList.getEntries(),
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[{ entryType: "measure", name: "measure1"}]);
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observer.disconnect();
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t.done();
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})
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);
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performance.clearMarks();
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observer.observe({entryTypes: ["mark"]});
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observer.observe({entryTypes: ["measure"]});
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performance.mark("mark1");
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performance.measure("measure1");
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}, "replace observer if already present");
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</script>
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