intercepted-referrer.https.html

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<meta charset="utf-8">

<title>Service Worker intercepted navigation preserves document.referrer</title>

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

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

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

<body>

<h1>Service Worker intercepted navigation preserves document.referrer</h1>

<script>

promise_test(async t => {

  // Scope where the SW will control navigations.

  // This lives under the same directory as the SW script below.

  const scope = 'resources/referrer-scope/';

  // Ensure a clean registration, then register the SW.

  const reg = await service_worker_unregister_and_register(

      t, 'resources/intercepted-referrer-sw.js', scope);

  // Wait for activation (handles fresh or already-active cases).

  const worker = reg.installing || reg.waiting || reg.active;

  await wait_for_state(t, worker, 'activated');

  // We’ll get one message back from the intercepted document.

  const messagePromise = new Promise(resolve => {

    window.addEventListener('message', e => resolve(e.data), { once: true });

});

  // Create a navigation under the SW’s scope. The SW will synthesize the page.

  const iframe = document.createElement('iframe');

  t.add_cleanup(() => iframe.remove());

  iframe.src = scope + 'navigated.html';

  document.body.append(iframe);

  const data = await messagePromise;

  // Basic sanity from the child payload.

  assert_equals(data && data.source, 'sw-intercepted', 'Child payload is from SW response');

  // document.referrer should be the full URL of this test page (same-origin default policy).

  // WPT servers send same-origin requests with full referrer (default "strict-origin-when-cross-origin").

  const expectedReferrer = location.href;

  assert_equals(data.referrer, expectedReferrer,

    'document.referrer inside the SW-synthesized document equals the parent test page URL');

  // Clean up: unregister the SW.

  t.add_cleanup(() => reg.unregister());

}, 'document.referrer for a navigation intercepted by a Service Worker is unchanged and matches the parent URL');

</script>

</body>