chromium/third_party/blink/web_tests/http/tests/loading/wbn/subresource-loading/serving-constraints.html

<!DOCTYPE html>
<head>
  <title>Test console messages for serving constraints violation of subresource Web Bundles</title>
</head>
<body>
<script>
(async () => {
if (window.testRunner) {
  testRunner.dumpAsText();
  testRunner.waitUntilDone();
}

// Delay running the test until "didFinishLoadForFrame" is printed.
// This is intended to avoid the flakiness of the result outputs.
await new Promise((resolve) => {
    window.addEventListener('load', () => setTimeout(resolve, 0));
  });

if (!HTMLScriptElement.supports('webbundle')) {
  console.error("Subresource Web Bundles is not supported");
  testRunner.notifyDone();
  return;
}

await new Promise((resolve, reject) => {
    const script = document.createElement('script');
    script.type = 'webbundle';
    script.textContent = JSON.stringify({
      source: '../resources/wbn/hello.wbn-wrong-mime-type'
    });
    script.addEventListener('error', resolve);
    document.body.appendChild(script);
  });

await new Promise((resolve, reject) => {
    const script = document.createElement('script');
    script.type = 'webbundle';
    script.textContent = JSON.stringify({
      source: '../resources/wbn/hello.wbn-without-nosniff'
    });
    script.onerror = () => {
      // Wait for the console message to be logged.
      setTimeout(resolve, 100);
    }
    document.body.appendChild(script);
  });

testRunner.notifyDone();
})();
</script>
</body>