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<!DOCTYPE html>
<html>
<head>
<title>Test for User Timing APIs on dying globals</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<script type="text/javascript">
// We must wait for the iframe to load.
SimpleTest.waitForExplicitFinish();
window.addEventListener('load', () => {
const dyingWindow = initTest();
ok(true, 'Initialization complete');
testDoesNotCrash(dyingWindow);
SimpleTest.finish();
});
function initTest() {
// We create a dying global by creating an iframe, keeping a
// reference to it, and removing it.
const iframe = document.querySelector('iframe');
const iframeWindow = iframe.contentWindow;
// We want to call the User Timing functions in the context of
// the dying global. However, we can't call constructors
// directly on a reference to a window so we have to wrap it.
iframeWindow.newPerformanceMark = () => {
new PerformanceMark('constructor', {detail: 'constructorDetail'});
};
// Send the global to a dying state.
iframe.remove();
return iframeWindow;
}
function testDoesNotCrash(dyingWindow) {
ok(true, 'Running testDoesNotCrash');
dyingWindow.newPerformanceMark();
ok(true, 'new PerformanceMark() on dying global did not crash');
try {
dyingWindow.performance.mark('markMethod', {detail: 'markMethodDetail'});
} catch (e) {
is(e.code, e.INVALID_STATE_ERR, 'performance.mark on dying global threw expected exception');
}
ok(true, 'performance.mark on dying global did not crash');
try {
dyingWindow.performance.measure('measureMethod');
} catch (e) {
is(e.code, e.INVALID_STATE_ERR, 'performance.measure on dying global threw expected exception');
}
ok(true, 'performance.measure on dying global did not crash');
}
</script>
</head>
<body>
<iframe width="200" height="200" src="about:blank"></iframe>
</body>
</html>
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