nav2-test-unique-nav-instances.html

Enable keyboard shortcuts

This WPT test may be referenced by the following Test IDs:
- /navigation-timing/nav2-test-unique-nav-instances.html - WPT Dashboard Interop Dashboard

<!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>