importScripts("http://{{host}}:{{ports[http][0]}}/resources/testharness.js");
onmessage = e => {
  const external_blob = e.data.blob;
  const external_blob_url = e.data.url;
  test(t => {
      assert_equals('null', self.location.origin);
    }, 'Worker has an opaque origin.');
  async_test(t => {
      const r = new FileReader();
      r.onloadend = t.step_func_done(e => assert_equals(r.result, 'from worker'));
      r.readAsText(new Blob(['from worker']));
    }, 'Worker can read its own blobs.');
  async_test(t => {
      const r = new FileReader();
      r.onloadend = t.step_func_done(e => assert_equals(r.result, 'from page'));
      r.readAsText(external_blob);
    }, 'Worker can read its owners blobs.');
  async_test(t => {
      const request = new XMLHttpRequest();
      request.open('GET', external_blob_url);
      request.onreadystatechange = t.step_func(() => {
          if (request.readyState == 4) {
            assert_equals(request.responseText, 'from page');
            t.done();
          }
        });
      request.send();
    }, 'Worker can XHR fetch a blob.');
  promise_test(t =>
      fetch(external_blob_url).then(r => r.text()).then(text => assert_equals(text, 'from page'))
    , 'Worker can fetch a blob.');
  async_test(t => {
      const channel = new BroadcastChannel('echochannel');
      channel.onmessage = t.step_func_done(e => assert_equals('ping', e.data));
      channel.postMessage('ping');
    }, 'Worker can access BroadcastChannel');
  done();
};