gecko-dev/dom/midi/tests/test_midi_device_connect_di...

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<html>
<head>
<title>WebMIDI Listener Test</title>
<script type="text/javascript" src="/MochiKit/MochiKit.js"></script>
<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 output;
let midi_access;
try {
midi_access = await navigator.requestMIDIAccess({ "sysex": false });
ok(true, "MIDI Access Request successful");
} catch (e) {
ok(false, "MIDI Access Request failed!");
SimpleTest.finish();
return;
}
is(midi_access.sysexEnabled, false, "Sysex should be false");
output = midi_access.outputs.get(MIDITestUtils.outputInfo.id);
let statePromiseRes;
let statePromise = new Promise((res) => { statePromiseRes = res; });
await output.open();
let stateChangeHandler = (event) => {
if (event.port == output) {
return;
}
statePromiseRes(event.port);
};
midi_access.addEventListener("statechange", stateChangeHandler);
// Send command to connect new port.
output.send([0x90, 0x01, 0x00]);
let p = await statePromise;
is(p.state, "connected", "Device " + p.name + " connected");
// Rebuild our promise, we'll need to await another one.
statePromise = new Promise((res) => { statePromiseRes = res; });
output.send([0x90, 0x02, 0x00]);
p = await statePromise;
is(p.state, "disconnected", "Device " + p.name + " disconnected");
midi_access.removeEventListener("statechange", stateChangeHandler);
SimpleTest.finish();
}
</script>
</body>
</html>