def test_note_with_velocity():
n1 = Note('A4', (3, 8), velocity=0.43)
n2 = n1.with_velocity(0.86)
assert n1.tone == n2.tone
assert n1.duration.nominator == n2.duration.nominator
assert n1.duration.denominator == n2.duration.denominator
assert n1.velocity == 0.43
assert n2.velocity == 0.86
def test_note_with_duration():
n1 = Note('A4', (3, 8))
n2 = n1.with_duration((7, 4))
assert n1.tone == n2.tone
assert n1.duration == Signature(3, 8)
assert n2.duration == Signature(7, 4)
assert n1.velocity == n2.velocity
def test_note_transposed():
n1 = Note('A4')
n2 = n1.transposed(+3)
assert n1.tone == Tone.from_notation('A4')
assert n2.tone == Tone.from_notation('C5')
assert n1.duration.nominator == n2.duration.nominator
assert n1.duration.denominator == n2.duration.denominator
assert n1.velocity == n2.velocity
def test_track_length():
assert Track().length == Signature(0, 1)
t = Track()
t.add(Note(0, (10, 4)))
assert t.length == Signature(10, 4)
t.add(Note(0, (30, 8)), (40, 2))
assert t.length == Signature(190, 8)
t.add(Note(0, (1, 4)))
assert t.length == Signature(192, 8)
def test_note_properties():
n = Note('B#6', (3, 8), 0.1415)
assert n.tone == Tone.from_notation('B#6')
assert n.duration.nominator == 3
assert n.duration.denominator == 8
assert n.velocity == 0.1415
def random_track():
track = Track(signature=(random.randint(0, 100), 16))
for _ in range(random.randint(100, 300)):
note = Note(random.randint(-100, 100), (random.randint(0, 100), 16))
position = (random.randint(0, 10000),
random.choice([1, 2, 4, 8, 16, 32, 64, 128, 256, 512]))
track.add(note, position)
return track
def random_track_without_overlaps():
track = Track(signature=(random.randint(0, 100), 16))
p = 0
for _ in range(random.randint(100, 300)):
note = Note(random.randint(30, 90), (random.randint(0, 100), 16),
velocity=1.0)
p += 200
track.add(note, (p, 16))
return track
def test_midi_serialize():
empty_track = Track(signature=(17, 16))
assert empty_track == midi.loads(midi.dumps(empty_track))
one_note_track = Track(signature=(17, 16),
content=[(Note(0, (3, 8), 1.0), (7, 16))])
assert one_note_track == midi.loads(midi.dumps(one_note_track))
for _ in range(10):
track = random_track_without_overlaps()
assert track == midi.loads(midi.dumps(track))
def test_track_add():
t = Track()
assert list(t) == []
t.add(Note(0, (1, 4)))
assert list(t) == [(Signature(0, 1), Note(0, (1, 4)))]
t.add([Note(0, (1, 4)), Note(1, (1, 4)), Note(-1, (1, 4))])
assert list(t) == [
(Signature(0, 1), Note(0, (1, 4))),
(Signature(1, 4), Note(-1, (1, 4))),
(Signature(1, 4), Note(0, (1, 4))),
(Signature(1, 4), Note(1, (1, 4))),
]
t.add(Note(42, (8, 1)), (13, 1))
assert list(t) == [(Signature(0, 1), Note(0, (1, 4))),
(Signature(1, 4), Note(-1, (1, 4))),
(Signature(1, 4), Note(0, (1, 4))),
(Signature(1, 4), Note(1, (1, 4))),
(Signature(13, 1), Note(42, (8, 1)))]
assert list(t) == [(Signature(0, 1), Note(0, (1, 4))),
(Signature(1, 4), Note(-1, (1, 4))),
(Signature(1, 4), Note(0, (1, 4))),
(Signature(1, 4), Note(1, (1, 4))),
(Signature(13, 1), Note(42, (8, 1)))]
assert list(t) == [(Signature(0, 1), Note(0, (1, 4))),
(Signature(1, 4), Note(-1, (1, 4))),
(Signature(1, 4), Note(0, (1, 4))),
(Signature(1, 4), Note(1, (1, 4))),
(Signature(13, 1), Note(42, (8, 1)))]
def test_note_comp():
assert Note('C#4') >= Note('C4')
assert Note('C#4') > Note('C4')
assert Note('C#4') <= Note('D4')
assert Note('C#4') < Note('D4')
def test_note_eq():
assert Note('C4') == Note('C4')
assert Note('C4') != Note('C5')
assert Note('C4', (1, 2), 0.3) == Note('C4', (2, 4), 0.3)
assert Note('C4', (1, 2), 0.3) != Note('C4', (2, 4), 0.4)
def test_note_basics():
assert Note(Tone(60)) == Note(60)
assert Note(Tone.from_notation('A4')) == Note('A4')
assert Note(Tone(60), Signature(3, 4)) == Note(60, (3, 4))
Note('A4', velocity=0.5)
with pytest.raises(ValueError):
Note('re')
with pytest.raises(TypeError):
Note('A4', '1/4')
with pytest.raises(ValueError):
Note('A4', velocity=-1.0)
with pytest.raises(ValueError):
Note('A4', velocity=1.1)
def test_midi_format_note_on():
midi_c4 = MIDIWriter(middle_c='C4', channel=3)
with pytest.raises(ValueError):
midi_c4._format_note_on(Note('C-2'))
with pytest.raises(ValueError):
midi_c4._format_note_on(Note('C10'))
with pytest.raises(ValueError):
midi_c4._format_note_on(Note('D11'))
midi_c3 = MIDIWriter(middle_c='C3', channel=3)
midi_c3._format_note_on(Note('C-2'))
with pytest.raises(ValueError):
midi_c3._format_note_on(Note('C-3'))
assert midi_c3._format_note_on(Note('C3', velocity=1.0)) == b'\x93\x3c\x7f'
assert midi_c3._format_note_on(Note('C4', velocity=0.0)) == b'\x93\x48\x00'
assert midi_c4._format_note_on(Note('C4', velocity=0.0)) == b'\x93\x3c\x00'
n = Note('C4')
n._velocity = 2.0
assert midi_c4._format_note_on(n) == b'\x93\x3c\x7f'
n._velocity = -10.0
assert midi_c4._format_note_on(n) == b'\x93\x3c\x00'