<!doctype html>
<title>worker.port.onmessage</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
async_test(t => {
  const worker = new SharedWorker('port-onmessage.js', '');
  worker.port.onmessage = t.step_func_done(e => {
    assert_true(e.data);
  });
}, 'Test SharedWorker.port.onmessage');
</script>
