import 'dart:html'; import 'package:expect/minitest.dart'; main() { test('constructorTest1', () { var audio = new AudioElement(); expect(audio, isNotNull); expect(audio is AudioElement, isTrue); }); test('constructorTest2', () { var audio = new AudioElement('IntentionallyMissingFileURL'); expect(audio, isNotNull); expect(audio is AudioElement, isTrue); expect(audio.src.contains('IntentionallyMissingFileURL'), isTrue); }); test('canPlayTypeTest', () { var audio = new AudioElement(); var canPlay = audio.canPlayType("audio/mp4"); expect(canPlay, isNotNull); expect(canPlay is String, isTrue); }); }