def test_signature_normalized():
s1 = Signature(6, 8)
s2 = s1.normalized()
assert s1.nominator == 6
assert s1.denominator == 8
assert s2.nominator == 3
assert s2.denominator == 4
def test_signature_to():
s1 = Signature(1, 2)
s2 = s1.to(8)
assert s1.nominator == 1
assert s1.denominator == 2
assert s2.nominator == 4
assert s2.denominator == 8
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_midi_format_signature():
midi = MIDIWriter()
assert midi._format_signature(Signature(0, 1), 16,
32) == b'\xff\x58\x04\x00\x00\x10\x20'
assert midi._format_signature(Signature(3, 4), 16,
32) == b'\xff\x58\x04\x03\x02\x10\x20'
assert midi._format_signature(Signature(127, 170141183460469231731687303715884105728), 16, 32) == \
b'\xff\x58\x04\x7f\x7f\x10\x20'
assert midi._format_signature(Signature(255, 170141183460469231731687303715884105728), 16, 32) == \
b'\xff\x58\x04\xff\x7f\x10\x20'
with pytest.raises(OverflowError):
midi._format_signature(Signature(512, 512), 16, 32)
with pytest.raises(OverflowError):
midi._format_signature(Signature(1, 4), -16, 32)
with pytest.raises(OverflowError):
midi._format_signature(Signature(1, 4), 16, -32)
with pytest.raises(OverflowError):
midi._format_signature(Signature(1, 4), 300, 32)
with pytest.raises(OverflowError):
midi._format_signature(Signature(1, 4), 16, 300)
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_track_basics():
Track()
Track((1, 4))
Track(Signature(1, 4))
with pytest.raises(ValueError):
Track((1, 6))
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_time_to_signature():
time_to_signature = MIDIReader._time_to_signature
with pytest.raises(AssertionError):
time_to_signature(0, 0)
with pytest.raises(AssertionError):
time_to_signature(0, -10)
assert time_to_signature(1, 1) == Signature(1, 4)
assert time_to_signature(2, 1) == Signature(2, 4)
assert time_to_signature(3, 1) == Signature(3, 4)
assert time_to_signature(4, 1) == Signature(4, 4)
assert time_to_signature(5, 1) == Signature(5, 4)
assert time_to_signature(6, 1) == Signature(6, 4)
assert time_to_signature(7, 1) == Signature(7, 4)
assert time_to_signature(8, 1) == Signature(8, 4)
assert time_to_signature(5, 10) == Signature(1, 8)
assert time_to_signature(10, 10) == Signature(1, 4)
assert time_to_signature(100, 10) == Signature(10, 4)
assert time_to_signature(1000, 10) == Signature(100, 4)
assert time_to_signature(500, 10) == Signature(50, 4)
assert time_to_signature(3, 96) == Signature(1, 128)
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_signature_abs():
assert abs(Signature(3, 8)) == Signature(3, 8)
def test_signature_mul():
assert Signature(1, 4) * Signature(2, 2) == Signature(2, 8)
assert Signature(3, 4) * Signature(5, 4) == Signature(15, 16)
assert Signature(1, 1) * Signature(2, 1) == Signature(2, 1)
def test_signature_sum():
assert Signature(0, 1) + Signature(0, 1) == Signature(0, 1)
assert Signature(1, 2) + Signature(1, 2) == Signature(1, 1)
assert Signature(1, 2) + Signature(1, 4) == Signature(3, 4)
def test_signature_comp():
assert Signature(2, 4) >= Signature(1, 2)
assert Signature(2, 4) <= Signature(1, 2)
assert Signature(2, 4) > Signature(1, 4)
assert Signature(2, 4) >= Signature(1, 4)
assert Signature(2, 4) < Signature(3, 4)
assert Signature(2, 4) <= Signature(3, 4)
def test_signature_eq():
assert Signature(0, 1) == Signature(0, 4)
assert Signature(1, 4) == Signature(8, 32)
assert Signature(3, 2) == Signature(6, 4)
def test_signature_basics():
Signature(0, 1)
Signature(1, 2)
Signature(2, 4)
Signature(3, 4)
Signature(4, 4)
Signature(1000, 4)
with pytest.raises(ValueError):
Signature(-1, 4)
with pytest.raises(ValueError):
Signature(0, 0)
with pytest.raises(ValueError):
Signature(0, -1)
with pytest.raises(ValueError):
Signature(1, 5)
with pytest.raises(ValueError):
Signature(1, 333)
s = Signature(43, 4)
assert s.nominator == 43
assert s._denominator == 4
def test_midi_signature_to_pulses():
assert MIDIWriter(pulses_per_quarter=1)._signature_to_pulses(
Signature(0, 1)) == 0
assert MIDIWriter(pulses_per_quarter=1)._signature_to_pulses(
Signature(1, 1)) == 4
assert MIDIWriter(pulses_per_quarter=1)._signature_to_pulses(
Signature(1, 2)) == 2
assert MIDIWriter(pulses_per_quarter=1)._signature_to_pulses(
Signature(1, 4)) == 1
assert MIDIWriter(pulses_per_quarter=1)._signature_to_pulses(
Signature(1, 8)) == 0
assert MIDIWriter(pulses_per_quarter=1)._signature_to_pulses(
Signature(1, 16)) == 0
assert MIDIWriter(pulses_per_quarter=1)._signature_to_pulses(
Signature(0, 16)) == 0
assert MIDIWriter(pulses_per_quarter=1)._signature_to_pulses(
Signature(1, 16)) == 0
assert MIDIWriter(pulses_per_quarter=1)._signature_to_pulses(
Signature(2, 16)) == 0
assert MIDIWriter(pulses_per_quarter=1)._signature_to_pulses(
Signature(3, 16)) == 0
assert MIDIWriter(pulses_per_quarter=1)._signature_to_pulses(
Signature(4, 16)) == 1
assert MIDIWriter(pulses_per_quarter=1)._signature_to_pulses(
Signature(5, 16)) == 1
assert MIDIWriter(pulses_per_quarter=1)._signature_to_pulses(
Signature(6, 16)) == 1
assert MIDIWriter(pulses_per_quarter=1)._signature_to_pulses(
Signature(7, 16)) == 1
assert MIDIWriter(pulses_per_quarter=1)._signature_to_pulses(
Signature(8, 16)) == 2
assert MIDIWriter(pulses_per_quarter=1)._signature_to_pulses(
Signature(9, 16)) == 2
assert MIDIWriter(pulses_per_quarter=1)._signature_to_pulses(
Signature(10, 16)) == 2
assert MIDIWriter(pulses_per_quarter=1)._signature_to_pulses(
Signature(11, 16)) == 2
assert MIDIWriter(pulses_per_quarter=1)._signature_to_pulses(
Signature(12, 16)) == 3
assert MIDIWriter(pulses_per_quarter=1)._signature_to_pulses(
Signature(13, 16)) == 3
assert MIDIWriter(pulses_per_quarter=1)._signature_to_pulses(
Signature(14, 16)) == 3
assert MIDIWriter(pulses_per_quarter=1)._signature_to_pulses(
Signature(15, 16)) == 3
assert MIDIWriter(pulses_per_quarter=1)._signature_to_pulses(
Signature(16, 16)) == 4
assert MIDIWriter(pulses_per_quarter=32)._signature_to_pulses(
Signature(1, 8)) == 16
assert MIDIWriter(pulses_per_quarter=1000)._signature_to_pulses(
Signature(1, 2)) == 2000