Test if midimessage event handler work. On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". PASS navigator.requestMIDIAccess is defined. running test with useAddEventListener = false receiving data 0: 128,0,0 PASS actual is expected receiving data 1: 144,0,0 PASS actual is expected receiving data 2: 160,0,0 PASS actual is expected receiving data 3: 176,0,0 PASS actual is expected receiving data 4: 192,0 PASS actual is expected receiving data 5: 208,0 PASS actual is expected receiving data 6: 224,0,0 PASS actual is expected receiving data 7: 248 PASS actual is expected receiving data 8: 250 PASS actual is expected receiving data 9: 251 PASS actual is expected receiving data 10: 252 PASS actual is expected receiving data 11: 254 PASS actual is expected receiving data 12: 255 PASS actual is expected receiving data 13: 240,0,1,2,3,247 PASS actual is expected receiving data 14: 240,248,247 PASS actual is expected running test with useAddEventListener = true receiving data 0: 128,0,0 PASS actual is expected receiving data 1: 144,0,0 PASS actual is expected receiving data 2: 160,0,0 PASS actual is expected receiving data 3: 176,0,0 PASS actual is expected receiving data 4: 192,0 PASS actual is expected receiving data 5: 208,0 PASS actual is expected receiving data 6: 224,0,0 PASS actual is expected receiving data 7: 248 PASS actual is expected receiving data 8: 250 PASS actual is expected receiving data 9: 251 PASS actual is expected receiving data 10: 252 PASS actual is expected receiving data 11: 254 PASS actual is expected receiving data 12: 255 PASS actual is expected receiving data 13: 240,0,1,2,3,247 PASS actual is expected receiving data 14: 240,248,247 PASS actual is expected PASS successfullyParsed is true TEST COMPLETE