chromium/third_party/blink/web_tests/external/wpt/content-security-policy/inside-worker/dedicatedworker-connect-src.html

<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<!-- Test the 'connect-src' directive on dedicated workers -->
<script>
  let reportCookieName = location.pathname.split('/')[
    location.pathname.split('/').length - 1].split('.')[0];
  let reportID = document.cookie.split('; ')
      .find(cookie => cookie.startsWith(reportCookieName + '='))
      .split('=')[1].trim();

  promise_test(async t => {
    // Dedicated workers do not inherit CSP.
    await fetch_tests_from_worker(
      new Worker("./support/connect-src-allow.sub.js"));

    // Dedicated workers honor CSP received in their response headers.
    await fetch_tests_from_worker(
      new Worker(
        `./support/connect-src-self.sub.js?id=${reportID}` +
          `&test-name=connect-src 'self'` +
          `&pipe=sub|header(Content-Security-Policy,` +
          `connect-src 'self' ; report-uri ` +
          `/reporting/resources/report.py?op=put%26reportID=${reportID})`));


    let blob = await fetch(`./support/connect-src-self.sub.js?id=${reportID}` +
                        `&test-name=connect-src 'self'`)
        .then(r => r.blob());

    // 'blob:' URL workers inherit CSP.
    let blob_url = URL.createObjectURL(blob);
    await fetch_tests_from_worker(new Worker(blob_url));

    if (window.webkitRequestFileSystem) {
      // 'filesystem:' URL workers inherit CSP.
      let fs = await new Promise(resolve =>
        window.webkitRequestFileSystem(window.TEMPORARY, 1024*1024, resolve));

      let fs_entry = await new Promise(resolve =>
        fs.root.getFile('dedicated-connect-src.js',
                        { create: true }, resolve));

      let writer = await new Promise(resolve => fs_entry.createWriter(resolve));

      writer.onerror = t.unreached_func("Could not write to filesystem entry");

      writer.write(blob);
      await new Promise(resolve => writer.onwriteend = resolve);

      let fs_url = fs_entry.toURL();
      await fetch_tests_from_worker(new Worker(fs_url));

      await new Promise(resolve => fs_entry.remove(resolve));
    }
  });
</script>