cors.https.window.js

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This test has a WPT meta file that expects 5 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /background-fetch/cors.https.window.html - WPT Dashboard Interop Dashboard

// META: script=/common/get-host-info.sub.js

// META: script=/service-workers/service-worker/resources/test-helpers.sub.js

// META: script=resources/utils.js

'use strict';

// Verifies Background Fetch enforcement of standard CORS security rules,

// including preflights, exposed headers, response types, and credentials mode.

const {HTTPS_REMOTE_ORIGIN} = get_host_info();

const kCorsResource =

    HTTPS_REMOTE_ORIGIN + '/background-fetch/resources/cors-resource.txt';

const kNoCorsResource =

    HTTPS_REMOTE_ORIGIN + '/background-fetch/resources/feature-name.txt';

backgroundFetchTest(

    async (test, bgFetch) => {

      await bgFetch.fetch(uniqueId(), kCorsResource);

      const event = await getMessageFromServiceWorker();

      assert_equals(event.type, 'backgroundfetchsuccess');

      assert_equals(event.results.length, 1);

      assert_equals(event.results[0].type, 'cors');

      assert_equals(event.results[0].secretHeader, null);

},

    'Cross-origin response type is cors and non-CORS-exposed headers are filtered',

    'sw-cors.js');

backgroundFetchTest(async (test, bgFetch) => {

  await bgFetch.fetch(uniqueId(), kNoCorsResource);

  const event = await getMessageFromServiceWorker();

  assert_equals(event.type, 'backgroundfetchfail');

}, 'Cross-origin Background Fetch fails without CORS headers', 'sw-cors.js');

backgroundFetchTest(

    async (test, bgFetch) => {

      const request = new Request(

          kCorsResource, {headers: {'X-Custom-Header': 'SecretValue'}});

      await bgFetch.fetch(uniqueId(), request);

      const event = await getMessageFromServiceWorker();

      assert_equals(event.type, 'backgroundfetchfail');

},

    'Cross-origin Background Fetch with custom headers fails without preflight approval',

    'sw-cors.js');

backgroundFetchTest(

    async (test, bgFetch) => {

      const request = new Request(kCorsResource, {credentials: 'include'});

      await bgFetch.fetch(uniqueId(), request);

      const event = await getMessageFromServiceWorker();

      assert_equals(event.type, 'backgroundfetchfail');

},

    'Cross-origin Background Fetch with credentials mode include fails against wildcard Origin',

    'sw-cors.js');

backgroundFetchTest(

    async (test, bgFetch) => {

      const request = new Request(kCorsResource, {credentials: 'omit'});

      await bgFetch.fetch(uniqueId(), request);

      const event = await getMessageFromServiceWorker();

      assert_equals(event.type, 'backgroundfetchsuccess');

},

    'Cross-origin Background Fetch with credentials mode omit succeeds against wildcard Origin',

    'sw-cors.js');