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

Enable keyboard shortcuts

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.');

promise_test(async t => {

  const run_result = false;

  const blob_contents = `

let constructedRequest = false;

try {

  new Request("./file.js");

  constructedRequest = true;

} catch (e) {}

self.postMessage(constructedRequest);

`;

  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, "Should not be able to resolve request with relative file path in blob");

}, 'Blob URLs should not resolve relative to document base URL.');