dedicated-worker-from-blob-url.window.js

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This WPT test may be referenced by the following Test IDs:
- /workers/dedicated-worker-from-blob-url.window.html - WPT Dashboard Interop Dashboard

function message_from_port(port) {

  return new Promise((resolve, reject) => {

    port.onmessage = e => resolve(e.data);

    port.onerror = e => reject(e);

});

promise_test(async t => {

  const run_result = 'worker_OK';

  const blob_contents = 'self.postMessage("' + run_result + '");';

  const blob = new Blob([blob_contents]);

  const url = URL.createObjectURL(blob);

  const worker = new Worker(url);

  const reply = await message_from_port(worker);

  assert_equals(reply, run_result);

}, 'Creating a dedicated worker from a blob URL works.');

promise_test(async t => {

  const run_result = 'worker_OK';

  const blob_contents = 'self.postMessage("' + run_result + '");';

  const blob = new Blob([blob_contents]);

  const url = URL.createObjectURL(blob);

  const worker = new Worker(url);

  URL.revokeObjectURL(url);

  const reply = await message_from_port(worker);

  assert_equals(reply, run_result);

}, 'Creating a dedicated worker from a blob URL works immediately before revoking.');