shared-worker-in-data-url-context.window.js

Enable keyboard shortcuts

This test has a WPT meta file that expects 2 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /workers/shared-worker-in-data-url-context.window.html - WPT Dashboard Interop Dashboard

// META: title=data URL shared worker in data URL context

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

const mimeType = 'application/javascript';

// Tests creating a data URL shared worker in a data URL iframe.

promise_test(async t => {

  const nestedWorkerScriptURL =

      new URL('/workers/support/post-message-on-load-worker.js', location.href);

  // This code will be executed in a data URL iframe. The iframe tries to create

  // a shared worker from |nestedWorkerScriptURL|, but that should result in a

  // failure. This is because the data URL iframe has an opaque origin, and

  // script fetch is handled as a cross-origin request.

  const frameCode = `

      <script>

      try {

        const worker = new SharedWorker('${nestedWorkerScriptURL}');

        worker.port.onmessage = e => {

          window.parent.postMessage(

              'SharedWorker construction unexpectedly succeeded', '*');

};

        worker.onerror = e => window.parent.postMessage('PASS', '*');

      } catch (e) {

        // Cross-origin request should asynchronously fail during worker script

        // fetch because its request mode is 'same-origin'.

        window.parent.postMessage(

            'SharedWorker construction unexpectedly synchronously failed', '*');

      </script>

`;

  const p = new Promise(r => window.onmessage = e => r(e.data));

  const frame = await with_iframe(`data:text/html;base64,${btoa(frameCode)}`);

  const result = await p;

  assert_equals(result, 'PASS');

}, 'Create a shared worker in a data url frame');

// Tests creating a data URL shared worker in a data URL iframe.

promise_test(async t => {

  const workerCode = `onconnect = e => e.ports[0].postMessage("PASS");`;

  // This code will be executed in a data URL iframe. The iframe tries to create

  // a data URL shared worker. Fetching a data URL from the data URL shared

  // worker is allowed, so the worker construction should succeed. The worker

  // posts the result to the parent frame.

  const frameCode = `

      <script>

      try {

        const worker = new SharedWorker('data:${mimeType},${workerCode};');

        worker.port.onmessage = e => window.parent.postMessage(e.data, '*');

        worker.onerror = e => {

          window.parent.postMessage('FAIL: ' + e.message, '*');

};

      } catch (e) {

        window.parent.postMessage(

            'SharedWorker construction unexpectedly synchronously failed', '*');

      </script>

`;

  const p = new Promise(r => window.onmessage = e => r(e.data));

  const frame = await with_iframe(`data:text/html;base64,${btoa(frameCode)}`);

  const result = await p;

  assert_equals(result, 'PASS');

}, 'Create a data url shared worker in a data url frame');