<!doctype html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<body>
<script>
async function runStartEndTest(t, utterance) {
  const eventWatcher = new EventWatcher(t, utterance, ['start', 'end', 'error']);
  await test_driver.bless('speechSynthesis.speak',
      () => { speechSynthesis.speak(utterance) });
  await eventWatcher.wait_for(['start'