worker-termination-on-script-fetch-failure.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>Test worker termination on script fetch failure</title>
<body></body>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>

// This test should not be upstreamed to WPT because of using Internals API.

function run_test(worker_url, worker_options, fetch_type) {
  promise_test(async t => {
    assert_equals(window.internals.workerThreadCount, 0);
    const worker = new Worker(worker_url, worker_options);

    // A failure of worker script fetch should be reported to the onerror
    // handler.
    await new Promise(resolve => worker.onerror = resolve);

    // Also, it should terminate the worker thread.
    await new Promise(resolve => {
      const timer = setInterval(() => {
        if (window.internals.workerThreadCount === 0) {
          clearInterval(timer);
          resolve();
        }
      }, 10);
    });
  }, `A failure on ${fetch_type} fetch should terminate the worker`);
}

// Loading non-existent top-level classic worker script should terminate the
// worker.
run_test('resources/non-existent-script.js',
         { type: 'classic' },
         'top-level classic worker script');

// Loading non-existent top-level module worker script should terminate the
// worker.
run_test('resources/non-existent-script.js',
         { type: 'module' },
         'top-level module worker script');

// Static import to non-existent module worker script should terminate the
// worker.
run_test('resources/worker-static-import-nonexistent-script.js',
         { type: 'module' },
         'static import');

</script>
chromium/third_party/blink/web_tests/http/tests/workers/worker-termination-on-script-fetch-failure.html
