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<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<meta name="timeout" content="long">
<title>Detect simple soft navigation.</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script src="resources/soft-navigation-helper.js"></script>
</head>
<body>
<main id=main>
<a id=link>Click me!</a>
</main>
<script>
const link = document.getElementById("link");
testSoftNavigation({
addContent: async () => {
await addImageToMain('green-16x16.png');
},
link: link,
clicks: 52,
extraValidations: async (entries, options)=>{
if (!performance.softNavPaintMetricsSupported) {
return;
}
const [paint_entries, paint_options] = await new Promise(resolve => {
new PerformanceObserver((list, obs, options) =>
resolve([list.getEntries(), options])).observe(
{type: 'paint', buffered: true});
});
assert_equals(options['droppedEntriesCount'], 2);
assert_equals(paint_options['droppedEntriesCount'], 4);
},
test: "Test that a soft navigation entries get dropped when buffer limits"
+ " get exceeded."});
</script>
</body>
</html>
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