supported-layout-type.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:
- /layout-instability/supported-layout-type.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<head>

<title>PerformanceObserver.supportedEntryTypes contains "layout-shift"</title>

</head>

<body>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script>

test(() => {

  assert_implements(window.LayoutShift, 'Layout Instability is not supported.');

  assert_implements(typeof PerformanceObserver.supportedEntryTypes !== "undefined",

      'supportedEntryTypes is not supported.');

  assert_greater_than(PerformanceObserver.supportedEntryTypes.indexOf("layout-shift"), -1,

    "There should be an entry 'layout-shift' in PerformanceObserver.supportedEntryTypes");

}, "supportedEntryTypes contains 'layoutShift'.");

</script>

</body>

</html>