Worker_script_mimetype.htm | Explore in Territory

<!DOCTYPE html>
<title>Worker constructor with wrong MIME type scripts</title>
<meta charset="utf-8">
<meta name="timeout" content="long">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>

<script>
async_test(t => {
  const worker = new Worker('./support/WorkerText.txt');
  worker.onmessage = t.unreached_func("Worker should not receive messages");
  worker.onerror = () => t.done();
}, "HTTP(S) URLs which respond with text/plain MIME type must not work");

async_test(t => {
  const worker = new SharedWorker('./support/WorkerText.txt');
  worker.onmessage = t.unreached_func("Worker should not receive messages");
  worker.onerror = () => t.done();
}, "HTTP(S) URLs which respond with text/plain MIME type must not work on SharedWorkers");

async_test(t => {
  const url = URL.createObjectURL(new Blob(['postMessage("PASS")'])); // no MIME type parameter
  const worker = new Worker(url);
  worker.onmessage = () => t.done();
  worker.onerror = t.unreached_func("Worker should not error");
}, "blob: URLs should load, despite no MIME type for the backing Blob");

async_test(t => {
  const url = URL.createObjectURL(new Blob(['postMessage("PASS")'], { type: 'text/plain' }));
  const worker = new Worker(url);
  worker.onmessage = () => t.done();
  worker.onerror = t.unreached_func("Worker should not error");
}, "blob: URLs should load, despite the wrong MIME type for the backing Blob");

async_test(t => {
  const url = `data:text/plain,postMessage("PASS");`
  const worker = new Worker(url);
  worker.onmessage = () => t.done();
  worker.onerror = t.unreached_func("Worker should not error");
}, "data: URLs should load, despite the wrong MIME type");

</script>
chromium/third_party/blink/web_tests/external/wpt/workers/Worker_script_mimetype.htm
