performance-entry-source.html

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /performance-timeline/tentative/performance-entry-source.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<head>

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

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

</head>

<body>

</body>

<script>

  promise_test(() => {

    return new Promise(resolve => {

      const navigationEntries = performance.getEntries({ type: 'navigation' })

      const parentEntry = navigationEntries[0]

      // Parent NavigationTiming source is current window.

      assert_equals(parentEntry.source, window)

      // Create child iframe.

      const childFrame = document.createElement('iframe')

      childFrame.src = "../resources/child-frame.html"

      document.body.appendChild(childFrame)

      childFrame.addEventListener('load', () => {

        const markedEntries = performance.getEntries(

          { name: 'mark_child_frame', includeChildFrames: true });

        const childEntry = markedEntries[0]

        // Child PerformanceMark source is the child's Window.

        assert_equals(childEntry.source, childFrame.contentWindow)

        resolve()

})

})

  }, "PerformanceEntry source is equal to its respective Window")

</script>