dropped-entries.tentative.html

Enable keyboard shortcuts

This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /soft-navigation-heuristics/dropped-entries.tentative.html - WPT Dashboard Interop Dashboard

<!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>