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<!DOCTYPE HTML>
<meta charset=utf-8>
<title>PerformanceObservers: disconnect</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="performanceobservers.js"></script>
<h1>PerformanceObservers: disconnect</h1>
<div id="log"></div>
<script>
async_test(function (t) {
var observer = new PerformanceObserver(
t.step_func(function (entryList, obs) {
assert_unreached("This callback must not be invoked");
})
);
observer.observe({entryTypes: ["mark", "measure", "navigation"]});
observer.disconnect();
performance.mark("mark1");
performance.measure("measure1");
t.step_timeout(function () {
t.done();
}, 2000);
}, "disconnected callbacks must not be invoked");
test(function () {
var obs = new PerformanceObserver(function () { return true; });
obs.disconnect();
obs.disconnect();
}, "disconnecting an unconnected observer is a no-op");
async_test(function (t) {
var observer = new PerformanceObserver(
t.step_func(function(entryList, obs) {
checkEntries(entryList.getEntries(),
[{ entryType: "mark", name: "mark1"}]);
t.done();
})
);
observer.observe({entryTypes: ["mark"]});
performance.mark("mark1");
observer.disconnect();
performance.mark("mark2");
}, "An observer disconnected after a mark must receive the mark");
</script>
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