test_midi_message_event.html

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<html>

<head>

  <title>WebMIDI MIDIMessageEvent Test</title>

  <script src="/tests/SimpleTest/SimpleTest.js"></script>

  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />

  <script type="application/javascript" src="MIDITestUtils.js"></script>

</head>

<body>

  <script class="testbody" type="application/javascript">

    add_task(async () => {

      await MIDITestUtils.permissionSetup(true);

      is(new MIDIMessageEvent('eventType').bubbles, false, "bubbles field is false by default");

      is(new MIDIMessageEvent('eventType').cancelable, false, "cancelable field is false by default");

      isDeeply(new MIDIMessageEvent('eventType').data, [], "The default message is empty");

      is(new MIDIMessageEvent('eventType', { bubbles: false }).bubbles, false, "bubbles is passed");

      is(new MIDIMessageEvent('eventType', { bubbles: true }).bubbles, true, "bubbles is passed");

      is(new MIDIMessageEvent('eventType', { cancelable: false }).cancelable, false, "cancelable is passed");

      is(new MIDIMessageEvent('eventType', { cancelable: true }).cancelable, true, "cancelable is passed");

      var data = new Uint8Array(16);

      isDeeply(new MIDIMessageEvent('eventType', { data }).data, data, "data is passed");

      // All initializers are passed.

      data = new Uint8Array(3);

      is(new MIDIMessageEvent('eventType', { bubbles: true, cancelable: true, data }).bubbles, true, "all initializers are passed");

      is(new MIDIMessageEvent('eventType', { bubbles: true, cancelable: true, data }).cancelable, true, "all initializers are passed");

      isDeeply(new MIDIMessageEvent('eventType', { bubbles: true, cancelable: true, data }).data, data, "all initializers are passed");

      if (window.SharedArrayBuffer) {

        data = new Uint8Array(new SharedArrayBuffer(3));

        SimpleTest.doesThrow(() => { new MIDIMessageEvent('eventType', { data }); }, "shared array buffers are rejected");

      } else {

        todo(false, 'SharedArrayBuffer is unavailable.');

});

  </script>

</body>

</html>