Content - 84edea84ed739167102467287c6618b5f13f6582 - 3a24a12/performance-timeline/po-observe.html

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Tip revision: 14e4db9c6a7a36f87541fafceab253725397f807 authored by Aryeh Gregor on 16 August 2016, 18:17:28 UTC
Correctly test initEvent unsetting propagation flags

Tip revision: 14e4db9

po-observe.html

<!DOCTYPE HTML>
<meta charset=utf-8>
<title>PerformanceObservers: observe</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="performanceobservers.js"></script>
<h1>PerformanceObservers: observe</h1>
<div id="log"></div>
<script>
  test(function () {
    var obs = new PerformanceObserver(function () { return true; });
    assert_throws(new TypeError(), function () {
      obs.observe({});
    });
    assert_throws(new TypeError(), function () {
      obs.observe({entryType: []});
    });
  }, "no entryTypes throws a TypeError");
  test(function () {
    var obs = new PerformanceObserver(function () { return true; });
    assert_throws(new TypeError(), function () {
      obs.observe({entryTypes: "mark"});
    });
    assert_throws(new TypeError(), function () {
      obs.observe({entryTypes: []});
    });
    assert_throws(new TypeError(), function () {
      obs.observe({entryTypes: ["this-cannot-match-an-entryType"]});
    });
    assert_throws(new TypeError(), function () {
      obs.observe({entryTypes: ["marks","navigate", "resources"]});
    });
  }, "Empty sequence entryTypes throws a TypeError");

  test(function () {
    var obs = new PerformanceObserver(function () { return true; });
    obs.observe({entryTypes: ["mark","this-cannot-match-an-entryType"]});
    obs.observe({entryTypes: ["this-cannot-match-an-entryType","mark"]});
    obs.observe({entryTypes: ["mark"], others: true});
  }, "Filter unsupported entryType entryType names within the entryTypes sequence");

  async_test(function (t) {
  var observer = new PerformanceObserver(
      t.step_func(function (entryList, obs) {
        assert_equals(observer, obs, "observer is second parameter");
        checkEntries(entryList.getEntries(),
          [{ entryType: "measure", name: "measure1"}]);
        observer.disconnect();
        t.done();
      })
    );
    performance.clearMarks();
    observer.observe({entryTypes: ["mark"]});
    observer.observe({entryTypes: ["measure"]});
    performance.mark("mark1");
    performance.measure("measure1");
  }, "replace observer if already present");
</script>

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