#----------------------------------------------------------------------------- # Name: miditest.py # Purpose: Unit testing harness for midiutil # # Author: Mark Conway Wirt # # Created: 2008/04/17 # Copyright: (c) 2009, Mark Conway Wirt # License: Please see License.txt for the terms under which this # software is distributed. #----------------------------------------------------------------------------- # Next few lines are necessary owing to limitations of the IDE and the # directory structure of the project. import sys, struct sys.path.append('..') PYTHON3 = True if sys.version_info[0] == 3 else False import unittest from pyknon.MidiFile import MIDIFile, MIDIHeader, MIDITrack, writeVarLength, \ frequencyTransform, returnFrequency import sys def get_byte(midi, track, data): if PYTHON3: return struct.unpack('>B', bytes([midi.tracks[track].MIDIdata[data]]))[0] else: return struct.unpack('>B', midi.tracks[track].MIDIdata[data])[0] class TestMIDIUtils(unittest.TestCase): def testWriteVarLength(self): self.assertEquals(writeVarLength(0x70), [0x70]) self.assertEquals(writeVarLength(0x80), [0x81, 0x00]) self.assertEquals(writeVarLength(0x1FFFFF), [0xFF, 0xFF, 0x7F]) self.assertEquals(writeVarLength(0x08000000), [0xC0, 0x80, 0x80, 0x00]) def testAddNote(self): MyMIDI = MIDIFile(1) MyMIDI.addNote(0, 0, 100,0,1,100) self.assertEquals(MyMIDI.tracks[0].eventList[0].type, "note") self.assertEquals(MyMIDI.tracks[0].eventList[0].pitch, 100) self.assertEquals(MyMIDI.tracks[0].eventList[0].time, 0) self.assertEquals(MyMIDI.tracks[0].eventList[0].duration, 1) self.assertEquals(MyMIDI.tracks[0].eventList[0].volume, 100) def testDeinterleaveNotes(self): MyMIDI = MIDIFile(1) MyMIDI.addNote(0, 0, 100, 0, 2, 100) MyMIDI.addNote(0, 0, 100, 1, 2, 100) MyMIDI.close() self.assertEquals(MyMIDI.tracks[0].MIDIEventList[0].type, 'NoteOn') self.assertEquals(MyMIDI.tracks[0].MIDIEventList[0].time, 0) self.assertEquals(MyMIDI.tracks[0].MIDIEventList[1].type, 'NoteOff') self.assertEquals(MyMIDI.tracks[0].MIDIEventList[1].time, 128) self.assertEquals(MyMIDI.tracks[0].MIDIEventList[2].type, 'NoteOn') self.assertEquals(MyMIDI.tracks[0].MIDIEventList[2].time, 0) self.assertEquals(MyMIDI.tracks[0].MIDIEventList[3].type, 'NoteOff') self.assertEquals(MyMIDI.tracks[0].MIDIEventList[3].time, 256) def testTimeShift(self): # With one track MyMIDI = MIDIFile(1) MyMIDI.addNote(0, 0, 100, 5, 1, 100) MyMIDI.close() self.assertEquals(MyMIDI.tracks[0].MIDIEventList[0].type, 'NoteOn') self.assertEquals(MyMIDI.tracks[0].MIDIEventList[0].time, 0) self.assertEquals(MyMIDI.tracks[0].MIDIEventList[1].type, 'NoteOff') self.assertEquals(MyMIDI.tracks[0].MIDIEventList[1].time, 128) # With two tracks MyMIDI = MIDIFile(2) MyMIDI.addNote(0, 0, 100, 5, 1, 100) MyMIDI.addNote(1, 0, 100, 6, 1, 100) MyMIDI.close() self.assertEquals(MyMIDI.tracks[0].MIDIEventList[0].type, 'NoteOn') self.assertEquals(MyMIDI.tracks[0].MIDIEventList[0].time, 0) self.assertEquals(MyMIDI.tracks[0].MIDIEventList[1].type, 'NoteOff') self.assertEquals(MyMIDI.tracks[0].MIDIEventList[1].time, 128) self.assertEquals(MyMIDI.tracks[1].MIDIEventList[0].type, 'NoteOn') self.assertEquals(MyMIDI.tracks[1].MIDIEventList[0].time, 128) self.assertEquals(MyMIDI.tracks[1].MIDIEventList[1].type, 'NoteOff') self.assertEquals(MyMIDI.tracks[1].MIDIEventList[1].time, 128) # Negative Time MyMIDI = MIDIFile(1) MyMIDI.addNote(0, 0, 100, -5, 1, 100) MyMIDI.close() self.assertEquals(MyMIDI.tracks[0].MIDIEventList[0].type, 'NoteOn') self.assertEquals(MyMIDI.tracks[0].MIDIEventList[0].time, 0) self.assertEquals(MyMIDI.tracks[0].MIDIEventList[1].type, 'NoteOff') self.assertEquals(MyMIDI.tracks[0].MIDIEventList[1].time, 128) # Negative time, two tracks MyMIDI = MIDIFile(2) MyMIDI.addNote(0, 0, 100, -1, 1, 100) MyMIDI.addNote(1, 0, 100, 0, 1, 100) MyMIDI.close() self.assertEquals(MyMIDI.tracks[0].MIDIEventList[0].type, 'NoteOn') self.assertEquals(MyMIDI.tracks[0].MIDIEventList[0].time, 0) self.assertEquals(MyMIDI.tracks[0].MIDIEventList[1].type, 'NoteOff') self.assertEquals(MyMIDI.tracks[0].MIDIEventList[1].time, 128) self.assertEquals(MyMIDI.tracks[1].MIDIEventList[0].type, 'NoteOn') self.assertEquals(MyMIDI.tracks[1].MIDIEventList[0].time, 128) self.assertEquals(MyMIDI.tracks[1].MIDIEventList[1].type, 'NoteOff') self.assertEquals(MyMIDI.tracks[1].MIDIEventList[1].time, 128) def testFrequency(self): freq = frequencyTransform(8.1758) self.assertEquals(freq[0], 0x00) self.assertEquals(freq[1], 0x00) self.assertEquals(freq[2], 0x00) freq = frequencyTransform(8.66196) # 8.6620 in MIDI documentation self.assertEquals(freq[0], 0x01) self.assertEquals(freq[1], 0x00) self.assertEquals(freq[2], 0x00) freq = frequencyTransform(440.00) self.assertEquals(freq[0], 0x45) self.assertEquals(freq[1], 0x00) self.assertEquals(freq[2], 0x00) freq = frequencyTransform(440.0016) self.assertEquals(freq[0], 0x45) self.assertEquals(freq[1], 0x00) self.assertEquals(freq[2], 0x01) freq = frequencyTransform(439.9984) self.assertEquals(freq[0], 0x44) self.assertEquals(freq[1], 0x7f) self.assertEquals(freq[2], 0x7f) freq = frequencyTransform(8372.0190) self.assertEquals(freq[0], 0x78) self.assertEquals(freq[1], 0x00) self.assertEquals(freq[2], 0x00) freq = frequencyTransform(8372.062) #8372.0630 in MIDI documentation self.assertEquals(freq[0], 0x78) self.assertEquals(freq[1], 0x00) self.assertEquals(freq[2], 0x01) freq = frequencyTransform(13289.7300) self.assertEquals(freq[0], 0x7F) self.assertEquals(freq[1], 0x7F) self.assertEquals(freq[2], 0x7E) freq = frequencyTransform(12543.8760) self.assertEquals(freq[0], 0x7F) self.assertEquals(freq[1], 0x00) self.assertEquals(freq[2], 0x00) freq = frequencyTransform(8.2104) # Just plain wrong in documentation, as far as I can tell. #self.assertEquals(freq[0], 0x0) #self.assertEquals(freq[1], 0x0) #self.assertEquals(freq[2], 0x1) # Test the inverse testFreq = 15.0 accuracy = 0.00001 x = returnFrequency(frequencyTransform(testFreq)) delta = abs(testFreq - x) self.assertEquals(delta < (accuracy*testFreq), True) testFreq = 200.0 x = returnFrequency(frequencyTransform(testFreq)) delta = abs(testFreq - x) self.assertEquals(delta < (accuracy*testFreq), True) testFreq = 400.0 x = returnFrequency(frequencyTransform(testFreq)) delta = abs(testFreq - x) self.assertEquals(delta < (accuracy*testFreq), True) testFreq = 440.0 x = returnFrequency(frequencyTransform(testFreq)) delta = abs(testFreq - x) self.assertEquals(delta < (accuracy*testFreq), True) testFreq = 1200.0 x = returnFrequency(frequencyTransform(testFreq)) delta = abs(testFreq - x) self.assertEquals(delta < (accuracy*testFreq), True) testFreq = 5000.0 x = returnFrequency(frequencyTransform(testFreq)) delta = abs(testFreq - x) self.assertEquals(delta < (accuracy*testFreq), True) testFreq = 12000.0 x = returnFrequency(frequencyTransform(testFreq)) delta = abs(testFreq - x) self.assertEquals(delta < (accuracy*testFreq), True) def testSysEx(self): MyMIDI = MIDIFile(1) MyMIDI.addSysEx(0,0, 0, struct.pack('>B', 0x01)) MyMIDI.close() self.assertEquals(MyMIDI.tracks[0].MIDIEventList[0].type, 'SysEx') self.assertEquals(get_byte(MyMIDI, 0, 0), 0x00) self.assertEquals(get_byte(MyMIDI, 0, 1), 0xf0) self.assertEquals(get_byte(MyMIDI, 0, 2), 3) self.assertEquals(get_byte(MyMIDI, 0, 3), 0x00) self.assertEquals(get_byte(MyMIDI, 0, 4), 0x01) self.assertEquals(get_byte(MyMIDI, 0, 5), 0xf7) def testUniversalSysEx(self): MyMIDI = MIDIFile(1) MyMIDI.addUniversalSysEx(0,0, 1, 2, struct.pack('>B', 0x01)) MyMIDI.close() self.assertEquals(MyMIDI.tracks[0].MIDIEventList[0].type, 'UniversalSysEx') self.assertEquals(get_byte(MyMIDI, 0, 0), 0x00) self.assertEquals(get_byte(MyMIDI, 0, 1), 0xf0) self.assertEquals(get_byte(MyMIDI, 0, 2), 6) self.assertEquals(get_byte(MyMIDI, 0, 3), 0x7E) self.assertEquals(get_byte(MyMIDI, 0, 4), 0x7F) self.assertEquals(get_byte(MyMIDI, 0, 5), 0x01) self.assertEquals(get_byte(MyMIDI, 0, 6), 0x02) self.assertEquals(get_byte(MyMIDI, 0, 7), 0x01) self.assertEquals(get_byte(MyMIDI, 0, 8), 0xf7) def testTuning(self): MyMIDI = MIDIFile(1) MyMIDI.changeNoteTuning(0, [(1, 440), (2, 880)]) MyMIDI.close() self.assertEquals(MyMIDI.tracks[0].MIDIEventList[0].type, 'UniversalSysEx') self.assertEquals(get_byte(MyMIDI, 0, 0), 0x00) self.assertEquals(get_byte(MyMIDI, 0, 1), 0xf0) self.assertEquals(get_byte(MyMIDI, 0, 2), 15) self.assertEquals(get_byte(MyMIDI, 0, 3), 0x7E) self.assertEquals(get_byte(MyMIDI, 0, 4), 0x7F) self.assertEquals(get_byte(MyMIDI, 0, 5), 0x08) self.assertEquals(get_byte(MyMIDI, 0, 6), 0x02) self.assertEquals(get_byte(MyMIDI, 0, 7), 0x00) self.assertEquals(get_byte(MyMIDI, 0, 8), 0x2) self.assertEquals(get_byte(MyMIDI, 0, 9), 0x1) self.assertEquals(get_byte(MyMIDI, 0, 10), 69) self.assertEquals(get_byte(MyMIDI, 0, 11), 0) self.assertEquals(get_byte(MyMIDI, 0, 12), 0) self.assertEquals(get_byte(MyMIDI, 0, 13), 0x2) self.assertEquals(get_byte(MyMIDI, 0, 14), 81) self.assertEquals(get_byte(MyMIDI, 0, 15), 0) self.assertEquals(get_byte(MyMIDI, 0, 16), 0) self.assertEquals(get_byte(MyMIDI, 0, 17), 0xf7) MIDISuite = unittest.TestLoader().loadTestsFromTestCase(TestMIDIUtils) if __name__ == '__main__': unittest.TextTestRunner(verbosity=1).run(MIDISuite)