<!doctype html>
<title>origin of the script that invoked the method, data:</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<iframe src="data:text/html,<script>onmessage = function(e) { parent.postMessage(e.origin, '*'); }; parent.postMessage('loaded', '*');</script>"></iframe>
<div id=log></div>
<script>
async_test(function() {
  onmessage = this.step_func(function(e) {
    if (e.data === 'loaded') {
      window[0].postMessage('', '*');
      return;
    }

    assert_equals(e.data, location.protocol + '//' + location.host);
    assert_equals(e.origin, 'null');
    assert_array_equals(e.ports, []);
    this.done();
  });
});
</script>