update-module-request-mode.https.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:
- /service-workers/service-worker/update-module-request-mode.https.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset="utf-8">

<meta name="timeout" content="long">

<title>Test that mode is set to same-origin for a main module</title>

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

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

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

<script>

// Tests a main module service worker script fetch during an update check.

// The fetch should have the mode set to 'same-origin'.

//

// The test works by registering a main module service worker. It then does an

// update. The test server responds with an updated worker script that remembers

// the http request. The updated worker reports back this request to the test

// page.

promise_test(async (t) => {

  const script = "resources/test-request-mode-worker.py";

  const scope = "resources/";

  // Register the service worker.

  await service_worker_unregister(t, scope);

  const registration = await navigator.serviceWorker.register(

      script, {scope, type: 'module'});

  await wait_for_state(t, registration.installing, 'activated');

  // Do an update.

  await registration.update();

  // Ask the new worker what the request was.

  const newWorker = registration.installing;

  const sawMessage = new Promise((resolve) => {

    navigator.serviceWorker.onmessage = (event) => {

      resolve(event.data);

};

});

  newWorker.postMessage('getHeaders');

  const result = await sawMessage;

  // Test the result.

  assert_equals(result['sec-fetch-mode'], 'same-origin');

  assert_equals(result['origin'], undefined);

}, 'headers of a main module script');

</script>