def test_change_alt():
n = Note(freq=466.16, alt=Note.SHARP)
assert n.name == 'A#'
assert n.freq == 466.16
assert n.octave == 4
n.alt = Note.FLAT
assert n.name == 'Bb'
assert n.freq == 466.16
assert n.octave == 4
n.alt = 'random string'
assert n.name == 'A#'
assert n.freq == 466.16
assert n.octave == 4
def test_pitch_shift():
n = Note(freq=440)
n.pitch_shift(value=53.88)
assert n.name == 'B'
assert n.freq == 493.88
assert n.octave == 4
n.pitch_shift(value=-53.88)
assert n.name == 'A'
assert n.freq == 440
assert n.octave == 4
n.pitch_shift(value=0)
assert n.name == 'A'
assert n.freq == 440
assert n.octave == 4
# Half step #
n = Note(freq=440)
n.pitch_shift(value=2, half_step=True)
assert n.name == 'B'
assert n.freq == 493.88
assert n.octave == 4
n.pitch_shift(value=-2, half_step=True)
assert n.name == 'A'
assert n.freq == 440
assert n.octave == 4
n.pitch_shift(value=0, half_step=True)
assert n.name == 'A'
assert n.freq == 440
assert n.octave == 4
n.alt = Note.SHARP
n.pitch_shift(value=1, half_step=True, alt=Note.FLAT)
assert n.name == 'Bb'
assert n.freq == 466.16
assert n.octave == 4
n.pitch_shift(value=0, half_step=True, alt=Note.SHARP)
assert n.name == 'A#'
assert n.freq == 466.16
assert n.octave == 4
# Octave #
n = Note(freq=440)
n.pitch_shift(value=1, octave=True)
assert n.name == 'A'
assert n.freq == 880
assert n.octave == 5
n.pitch_shift(value=-2, octave=True)
assert n.name == 'A'
assert n.freq == 220
assert n.octave == 3
n.pitch_shift(value=0, octave=True)
assert n.name == 'A'
assert n.freq == 220
assert n.octave == 3
n = Note(freq=466.16)
n.pitch_shift(value=1, octave=True, alt=Note.FLAT)
assert n.name == 'Bb'
assert n.freq == 932.32
assert n.octave == 5
n.pitch_shift(value=-1, octave=True, alt=Note.SHARP)
assert n.name == 'A#'
assert n.freq == 466.16
assert n.octave == 4
with pytest.raises(TypeError):
Note(freq=440).pitch_shift()
with pytest.raises(TypeError):
Note(freq=440).pitch_shift(value='string')
with pytest.raises(TypeError):
Note(freq=440).pitch_shift(value='string', half_step=True)
with pytest.raises(TypeError):
Note(freq=440).pitch_shift(value='string', octave=True)
