servo/tests/wpt/web-platform-tests/speech-api/SpeechSynthesis-speak-ownership.html

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780 B
HTML

<!doctype html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<iframe></iframe>
<script>
// using an utterance for different SpeechSynthesis instances should throw
test(t => {
// the utterance is short to make the test faster
const utter = new SpeechSynthesisUtterance('1');
const iframe = document.querySelector('iframe');
assert_not_equals(speechSynthesis, iframe.contentWindow.speechSynthesis);
speechSynthesis.speak(utter);
// the spec doesn't say what exception to throw:
// https://github.com/w3c/speech-api/issues/8
assert_throws(null, () => {
iframe.contentWindow.speechSynthesis.speak(utter);
});
}, 'Using the same SpeechSynthesisUtterance with two SpeechSynthesis instances');
</script>