performance-timeline.https.html

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This test has a WPT meta file that disables it given conditions:
- : true
This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /service-workers/service-worker/performance-timeline.https.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

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

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

<script src="resources/test-helpers.sub.js"></script>

<script>

service_worker_test(

    'resources/performance-timeline-worker.js',

    'Test Performance Timeline API in Service Worker');

// The purpose of this test is to verify that service worker overhead

// is included in the Performance API's timing information.

promise_test(t => {

  let script = 'resources/empty-but-slow-worker.js';

  let scope = 'resources/sample.txt?slow-sw-timing';

  let url = new URL(scope, window.location).href;

  let slowURL = url + '&slow';

  let frame;

  return service_worker_unregister_and_register(t, script, scope)

    .then(reg => {

        t.add_cleanup(() => service_worker_unregister(t, scope));

        return wait_for_state(t, reg.installing, 'activated');

})

    .then(_ => with_iframe(scope))

    .then(f => {

      frame = f;

      return frame.contentWindow.fetch(url).then(r => r && r.text());

})

    .then(_ => {

      return frame.contentWindow.fetch(slowURL).then(r => r && r.text());

})

    .then(_ => {

      function elapsed(u) {

        let entry = frame.contentWindow.performance.getEntriesByName(u);

        return entry[0] ? entry[0].duration : undefined;

      let urlTime = elapsed(url);

      let slowURLTime = elapsed(slowURL);

      // Verify the request slowed by the service worker is indeed measured

      // to be slower.  Note, we compare to smaller delay instead of the exact

      // delay amount to avoid making the test racy under automation.

      assert_greater_than(slowURLTime, urlTime + 1000,

                  'Slow service worker request should measure increased delay.');

      frame.remove();

})

}, 'empty service worker fetch event included in performance timings');

</script>