| <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> |
| // using an utterance for different SpeechSynthesis instances should throw |
| test_driver.bless('speechSynthesis.speak', t.step_func_done(() => { |
| // 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'); |
