<!doctype html>
<script>
parent.t.step(function() {
  window.onerror = this.step_func(function(a) {
    assert_unreached('(inner) window.onerror invoked: ' + a);
  });
  var worker = new SharedWorker('004.html#', '');
  worker.addEventListener('error', this.step_func(function(e) {
    parent.assert_unreached('(inner) error on worker');
  }), false);
  worker.port.addEventListener('error', this.step_func(function(e) {
    parent.assert_unreached('(inner) error on port');
  }), false);
  worker.port.onmessage = this.step_func_done(function(e) {
    parent.assert_equals(e.data, 2);
  });
});
</script>