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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>Navigation Timing 2 WPT</title>
<link rel="author" title="Google" href="http://www.google.com/" />
<link rel="help" href="http://www.w3.org/TR/navigation-timing-2/#sec-PerformanceNavigationTiming"/>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
</head>
<body>
<h1>Description</h1>
<p>This test validates that each window has a unique nav timing 2 instance.</p>
<iframe id="frameContext" src="resources/blank_page_green.html" style="display:none;";></iframe>
<script>
var navTiming2Attributes = [
'connectEnd',
'connectStart',
'decodedBodySize',
'domComplete',
'domContentLoadedEventEnd',
'domContentLoadedEventStart',
'domInteractive',
'domainLookupEnd',
'domainLookupStart',
'duration',
'encodedBodySize',
'entryType',
'fetchStart',
'initiatorType',
'loadEventEnd',
'loadEventStart',
'name',
'redirectCount',
'redirectEnd',
'redirectStart',
'requestStart',
'responseEnd',
'responseStart',
'secureConnectionStart',
'transferSize',
'type',
'unloadEventEnd',
'unloadEventStart',
'workerStart'
];
function not_same_instance(instance1, instance2, attributes) {
for (var i in attributes) {
if (instance1[attributes[i]] != instance2[attributes[i]])
return true;
}
return false;
}
async_test(function (t) {
var observer = new PerformanceObserver(
t.step_func(function (entryList) {
assert_equals(entryList.getEntriesByType("navigation").length, 1, "Only one nav timing instance exists.");
assert_equals(document.getElementById("frameContext").contentWindow.performance.getEntriesByType("navigation").length, 1,
"Only one nav timing instance exists.");
var main_frame_instance = entryList.getEntriesByType("navigation")[0];
var iframe_instance = document.getElementById("frameContext").contentWindow.performance.getEntriesByType("navigation")[0];
assert_true(not_same_instance(main_frame_instance, iframe_instance, navTiming2Attributes),
"Two nav timing instances are not the same instance.");
observer.disconnect();
t.done();
})
);
observer.observe({entryTypes: ["navigation"]});
}, "Each window has a unique nav timing 2 instance.");
</script>
</body>
</html>
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