test_midi_device_implicit_open_close.html

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<html>

  <head>

    <title>WebMIDI Listener 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 onload="runTests()">

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

     SimpleTest.waitForExplicitFinish();

     async function runTests() {

       await MIDITestUtils.permissionSetup(true);

       let access = await navigator.requestMIDIAccess({ "sysex": false });

       ok(true, "MIDI Access Request successful");

       is(access.sysexEnabled, false, "Sysex should be false");

       var checkCount = 0;

       var input;

       var output;

       function checkCallbacks(port) {

         if (checkCount < 2) {

           ok(port.connection === "open", "Got port " + port.connection + " for " + port.name);

         } else {

          ok(port.connection === "closed", "Got port " + port.connection + " for " + port.name);

         checkCount++;

         if (checkCount == 4) {

           input.onstatechange = undefined;

           output.onstatechange = undefined;

           SimpleTest.finish();

       function checkReturn(event) {

         ok(true, "Got echo message back");

         MIDITestUtils.checkPacket(event.data, [0x90, 0x00, 0x7f]);

         input.close();

         output.close();

       input = access.inputs.get(await MIDITestUtils.inputInfo.id);

       output = access.outputs.get(await MIDITestUtils.outputInfo.id);

       input.onstatechange = (event) => { checkCallbacks(event.port); };

       output.onstatechange = (event) => { checkCallbacks(event.port); };

       // Ports are closed. Fire rest of tests.

       input.onmidimessage = checkReturn;

       output.send([0x90, 0x00, 0x7F]);

    </script>

  </body>

</html>