def test_add_note_strict_false():
try:
Chord(Note(name='C'), Note(name='E'),
Note(name='G')).add_note(note='invalid', strict=False)
Chord(strict=False).add_note(note='invalid', strict=False)
except ChordException:
pytest.fail('Unexpected ChordException')
def test_str():
s = Scale.create_from_root(root=Note(name='C'))
assert 'C4,D4,E4,F4,G4,A4,B4' == str(s)
s = Scale.create_from_root(root=Note(name='C'),
order=Scale.DESCENDING_SCALE_TYPE)
assert 'B4,A4,G4,F4,E4,D4,C4' == str(s)
def test_remove_note_none():
m = Mock(Note(name='C'), Note(name='C', octave=5))
m.remove_note()
assert len(m.notes) == 2
m = Mock(Note(name='C'), Note(name='D'), Note(name='E'))
m.remove_note()
assert len(m.notes) == 3
def test_value():
n = Note(name='A')
assert n.duration == 4 / 4
n.duration = 1 / 8
assert n.duration == 1 / 8
assert Note(name='A', duration=1 / 16).duration == 1 / 16
def test_is_valid():
assert Mock(strict=False).is_valid() is False
assert Mock(Note(name='C'), strict=False).is_valid() is True
assert Mock('a', 'b', strict=False).is_valid() is False
assert Mock(Note(name='C'), Note(name='E')).is_valid() is True
assert Mock(Note(name='C'), Note(name='E'),
strict=False).is_valid() is True
assert Mock(strict=False).is_valid() is False
def test_get_notes_from_root_with_none_note_list_type():
with pytest.raises(NoteListException) as exc:
Mock.get_notes_from_root(root=Note(name='C'))
assert 'Invalid note list type' == str(exc.value)
with pytest.raises(NoteListException) as exc:
Mock.get_notes_from_root(root=Note(name='C'), alt=Note.FLAT, octave=4)
assert 'Invalid note list type' == str(exc.value)
def test_create_with_invalid_note_name():
with pytest.raises(NoteException) as exc:
Note(name='S')
assert 'Invalid note.' == str(exc.value)
with pytest.raises(NoteException) as exc:
Note(name=3)
assert 'Invalid note.' == str(exc.value)
def test_get_notes_from_root_with_alt():
m = Mock(*Mock.get_notes_from_root(
root=Note(name='C'), note_list_type=[3, 5, 7, 10], alt=Note.FLAT))
assert 'Eb4' in str(m).split(',')
assert 'Bb4' in str(m).split(',')
m = Mock(*Mock.get_notes_from_root(
root=Note(name='C'), note_list_type=[3, 5, 7, 10], alt=Note.SHARP))
assert 'D#4' in str(m).split(',')
assert 'A#4' in str(m).split(',')
def test_create_from_root_with_alt():
c = Chord.create_from_root(root=Note(name='C', alt=Note.SHARP),
chord_type=Chord.MINOR_TYPE)
assert 'D#4' in str(c).split(',')
c = Chord.create_from_root(root=Note(name='C', alt=Note.FLAT),
chord_type=Chord.MINOR_TYPE,
alt=Note.FLAT)
assert 'Eb4' in str(c).split(',')
def test_add_note_strict():
with pytest.raises(ChordException) as exc:
Chord(Note(name='C'), Note(name='E'),
Note(name='G')).add_note(note='invalid')
assert 'Invalid note given.' == str(exc.value)
with pytest.raises(ChordException) as exc:
Chord(strict=False).add_note(note='invalid')
assert 'Invalid note given.' == str(exc.value)
def test_str():
m = Mock(Note(name='C'), Note(name='E'), Note(name='G'))
assert 'C4' in str(m).split(',')
assert 'E4' in str(m).split(',')
assert 'G4' in str(m).split(',')
m.add_note(note=Note(name='C', octave=5))
assert 'C4' in str(m).split(',')
assert 'E4' in str(m).split(',')
assert 'G4' in str(m).split(',')
assert 'C5' in str(m).split(',')
def test_repr():
n = eval(repr(Note(name='A')))
assert n.freq == 440
assert n.name == 'A'
assert n.octave == 4
assert n.duration == 4 / 4
n = eval(repr(Note(freq=932.32, alt=Note.FLAT, duration=1 / 8)))
assert n.freq == 932.32
assert n.name == 'Bb'
assert n.octave == 5
assert n.duration == 1 / 8
def remove_note_by_note_not_strict():
m = Mock('a', 'b')
m.remove_note(note='a', strict=False)
assert len(m.notes) == 1
assert 'b' in m.notes
assert 'a' not in m.notes
m = Mock(Note(name='C'), Note(name='E'))
m.remove_note(note=Note(name='C'), strict=False)
assert len(m.notes) == 1
assert Note(name='E') in m.notes
m.remove_note(name='G', strict=False)
assert len(m.notes) == 1
assert Note(name='E') in m.notes
try:
m = Mock(Note(name='C'))
m.remove_note(note=Note(name='C'), strict=False)
except:
pytest.fail('Unexpected NoteListException')
assert len(m) == 0
def test_add_invalid_note():
m = Mock(Note(name='C'), Note(name='D'), Note(name='E'))
with pytest.raises(NoteListException) as exc:
m.add_note(note=1)
assert 'Invalid note given.' == str(exc.value)
with pytest.raises(NoteListException) as exc:
m.add_note(note='invalid')
assert 'Invalid note given.' == str(exc.value)
m.add_note(note='invalid', strict=False)
assert len(m.notes) == 4
with pytest.raises(AttributeError) as exc:
assert "'str' object has no attribute 'freq'" in m.notes
def test_remove_note_by_name_not_strict():
m = Mock(Note(name='C'), Note(name='E'))
m.remove_note(name='C', strict=False)
assert len(m.notes) == 1
assert Note(name='E') in m.notes
m.remove_note(name='G', strict=False)
assert len(m.notes) == 1
assert Note(name='E') in m.notes
try:
m = Mock(Note(name='A'))
m.remove_note(name='A', strict=False)
except:
pytest.fail('Unexpected NoteListException')
assert len(m.notes) == 0
def test_create_from_root_with_int_octave():
c = Chord.create_from_root(root=Note(name='G', octave=3), octave=4)
assert Note(name='G', octave=3) in c.notes
assert Note(name='B', octave=4) in c.notes
assert Note(name='D', octave=4) in c.notes
c = Chord.create_from_root(root=Note(name='F', octave=4), octave=3)
assert Note(name='F', octave=4) in c.notes
assert Note(name='A', octave=3) in c.notes
assert Note(name='C', octave=3) in c.notes
def test_add_note():
m = Mock(Note(name='C'), Note(name='D'), Note(name='E'))
m.add_note(note=Note(name='G'))
assert len(m.notes) == 4
assert Note(name='G') in m.notes
m.add_note(note=Note(name='C'))
assert len(m.notes) == 5
m.add_note(note=Note(name='A', octave=5))
assert len(m.notes) == 6
assert Note(name='A', octave=5) in m.notes
def test_create_with_name():
n = Note(name='A')
assert n.name == 'A'
assert n.freq == 440
assert n.octave == 4
n = Note(name='B')
assert n.name == 'B'
assert n.freq == 493.88
assert n.octave == 4
n = Note(name='B', octave=3)
assert n.name == 'B'
assert n.freq == 246.94
assert n.octave == 3
n = Note(name='D#', octave=5)
assert n.name == 'D#'
assert n.freq == 622.25
assert n.octave == 5
def test_create_not_strict():
try:
assert len(Chord(strict=False).notes) == 0
assert len(Chord(Note(name='C'), strict=False).notes) == 1
c = Chord('a', 'b', strict=False)
assert len(c.notes) == 2
assert 'a' in c.notes
assert 'b' in c.notes
except ChordException:
pytest.fail("Unexpected ChordException")
def test_remove_note():
c = Chord.create_from_root(root=Note(name='C'))
c.remove_note(note=Note(name='E'))
assert len(c.notes) == 2
assert c.notes[0] == Note(name='C')
assert c.notes[1] == Note(name='G')
c = Chord.create_from_root(root=Note(name='C'),
chord_type=Chord.MINOR_TYPE)
c.remove_note(note=Note(name='Eb'))
assert len(c.notes) == 2
assert c.notes[0] == Note(name='C')
assert c.notes[1] == Note(name='G')
def test_create_with_freq():
n = Note(freq=440)
assert n.name == 'A'
assert n.freq == 440
assert n.octave == 4
n = Note(freq=246.94)
assert n.name == 'B'
assert n.freq == 246.94
assert n.octave == 3
n = Note(freq=466.16)
assert n.name == 'A#'
assert n.freq == 466.16
assert n.octave == 4
n = Note(freq=466.16, alt=Note.FLAT)
assert n.name == 'Bb'
assert n.freq == 466.16
assert n.octave == 4
n = Note(freq=466.16, alt=Note.SHARP)
assert n.name == 'A#'
assert n.freq == 466.16
assert n.octave == 4
n = Note(freq=440, name='B', octave=2)
assert n.name == 'A'
assert n.freq == 440
assert n.octave == 4
def test_create_from_root_with_callable_octave():
c = Chord.create_from_root(root=Note(name='G', octave=3),
octave=lambda root_octave, i, distance: i + 1)
assert Note(name='G', octave=3) in c.notes
assert Note(name='B', octave=1) in c.notes
assert Note(name='D', octave=2) in c.notes
c = Chord.create_from_root(
root=Note(name='F', octave=4),
octave=lambda root_octave, i, distance: root_octave + i + 1)
assert Note(name='F', octave=4) in c.notes
assert Note(name='A', octave=5) in c.notes
assert Note(name='C', octave=6) in c.notes
with pytest.raises(TypeError):
Chord.create_from_root(root=Note(name='F', octave=4),
octave=lambda: 'invalid')
def test_change_freq():
n = Note(freq=440)
n.freq = 220
assert n.name == 'A'
assert n.freq == 220
assert n.octave == 3
n.freq = 622.25
assert n.name == 'D#'
assert n.freq == 622.25
assert n.octave == 5
with pytest.raises(ValueError):
n.freq = 'string'
def test_get_notes_from_root_with_invalid_octave():
notes = Mock.get_notes_from_root(root=Note(name='C'),
note_list_type=[3, 5, 7, 10],
octave='invalid')
assert Note(name='C', octave=4) in notes
assert Note(name='Eb', octave=4) in notes
assert Note(name='F', octave=4) in notes
assert Note(name='G', octave=4) in notes
assert Note(name='Bb', octave=4) in notes
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 get_notes_from_root(cls,
root,
note_list_type=None,
octave=None,
alt=Note.SHARP):
"""
:param root: root note
:param note_list_type: a list of notes distance from root note
:param octave: octave of notes in chord
:param alt: note alteration 'sharp' or 'flat'
:type root: Note
:type note_list_type: list
:type octave: Union[int, string, callable]
:type alt: string
:return: Scale
"""
if note_list_type is None:
raise NoteListException('Invalid note list type')
if octave is None:
octave = cls.OCTAVE_TYPE_ROOT
root_idx = root.get_note_index()
def get_octave(i, distance):
if callable(octave):
return octave(root.octave, i, distance)
elif isinstance(octave, int):
return octave
elif octave == cls.OCTAVE_TYPE_ROOT:
return root.octave
elif octave == cls.OCTAVE_TYPE_FROM_ROOT:
return root.octave + int(distance / len(Note.NOTES))
else:
return Note.A_DEFAULT_OCTAVE
notes = [
Note(name=Note.get_note_name_by_index(root_idx + distance,
alt=alt),
octave=get_octave(i, root_idx + distance),
alt=alt) for i, distance in enumerate(note_list_type)
]
notes.insert(0, root)
return notes
def test_is_valid():
assert Chord(strict=False).is_valid() is False
assert Chord(Note(name='C'), strict=False).is_valid() is False
assert Chord('a', 'b', strict=False).is_valid() is False
assert Chord(Note(name='C'), Note(name='E')).is_valid() is True
c = Chord(Note(name='C'), Note(name='E'))
assert c.is_valid() is True
assert Chord(Note(name='C'), strict=False).is_valid() is False
def test_get_notes_from_root_with_callable_octave():
notes = Mock.get_notes_from_root(
root=Note(name='C', octave=3),
note_list_type=[3, 7],
octave=lambda root_octave, i, distance: root_octave + 1)
assert Note(name='C', octave=3) in notes
assert Note(name='Eb', octave=4) in notes
assert Note(name='G', octave=4) in notes
notes = Mock.get_notes_from_root(
root=Note(name='C', octave=3),
note_list_type=[3, 7],
octave=lambda root_octave, i, distance: i + 1)
assert Note(name='C', octave=3) in notes
assert Note(name='Eb', octave=1) in notes
assert Note(name='G', octave=2) in notes
with pytest.raises(TypeError):
notes = Mock.get_notes_from_root(root=Note(name='C', octave=3),
note_list_type=[3, 7],
octave=lambda: 'invalid')
def test_create():
s = Scale(Note(name='C'), Note(name='D'), Note(name='E'))
assert s.notes[0] == Note(name='C')
assert s.notes[1] == Note(name='D')
assert s.notes[2] == Note(name='E')
assert len(s.notes) == 3
s = Scale(Note(name='C'), Note(name='Bb', octave=3), Note(name='D'),
Note(name='E'))
assert s.notes[0] == Note(name='Bb', octave=3)
assert s.notes[1] == Note(name='C')
assert s.notes[2] == Note(name='D')
assert s.notes[3] == Note(name='E')
assert len(s.notes) == 4
s = Scale(Note(name='C'), Note(name='C'), Note(name='D'), Note(name='E'))
assert s.notes[0] == Note(name='C')
assert s.notes[1] == Note(name='D')
assert s.notes[2] == Note(name='E')
assert len(s.notes) == 3
s = Scale(Note(name='C'), Note(name='C', octave=5), Note(name='D'),
Note(name='E'))
assert s.notes[0] == Note(name='C')
assert s.notes[1] == Note(name='D')
assert s.notes[2] == Note(name='E')
assert s.notes[3] == Note(name='C', octave=5)
assert len(s.notes) == 4
s = Scale(Note(name='C', octave=5), Note(name='D', octave=3),
Note(name='D'))
assert s.notes[0] == Note(name='D', octave=3)
assert s.notes[1] == Note(name='D')
assert s.notes[2] == Note(name='C', octave=5)
assert len(s.notes) == 3
s = Scale(Note(name='C'),
Note(name='Bb', octave=3),
Note(name='D'),
order=Scale.ASCENDING_SCALE_TYPE)
assert s.notes[0] == Note(name='Bb', octave=3)
assert s.notes[1] == Note(name='C')
assert s.notes[2] == Note(name='D')
assert len(s.notes) == 3
s = Scale(Note(name='C', octave=5),
Note(name='D', octave=3),
Note(name='D'),
Note(name='G'),
order=Scale.ASCENDING_SCALE_TYPE)
assert s.notes[0] == Note(name='D', octave=3)
assert s.notes[1] == Note(name='D')
assert s.notes[2] == Note(name='G')
assert s.notes[3] == Note(name='C', octave=5)
assert len(s.notes) == 4
s = Scale(Note(name='C'),
Note(name='Bb', octave=3),
Note(name='D'),
Note(name='E'),
order=Scale.DESCENDING_SCALE_TYPE)
assert s.notes[0] == Note(name='E')
assert s.notes[1] == Note(name='D')
assert s.notes[2] == Note(name='C')
assert s.notes[3] == Note(name='Bb', octave=3)
assert len(s.notes) == 4
s = Scale(Note(name='C', octave=5),
Note(name='D', octave=3),
Note(name='D'),
order=Scale.DESCENDING_SCALE_TYPE)
assert s.notes[0] == Note(name='C', octave=5)
assert s.notes[1] == Note(name='D')
assert s.notes[2] == Note(name='D', octave=3)
assert len(s.notes) == 3
with pytest.raises(ScaleException) as exc:
Scale()
assert 'Invalid Scale.' == str(exc.value)
with pytest.raises(ScaleException) as exc:
Scale('invalid')
assert 'Invalid Scale.' == str(exc.value)
with pytest.raises(ScaleException) as exc:
Scale('invalid', 'invalid')
assert 'Invalid Scale.' == str(exc.value)
try:
Scale(Note(name='C'), 'invalid', strict=False)
Scale('invalid', strict=False)
Scale(strict=False)
except ScaleException:
pytest.fail("Unexpected NoteListException")
def test_repr():
s = eval(repr(Scale.create_from_root(root=Note(name='C'))))
assert s == Scale.create_from_root(root=Note(name='C'))
s = eval(repr(Scale.create_from_root(root=Note(name='F'))))
assert s == Scale.create_from_root(root=Note(name='F'))
s = eval(
repr(
Scale(Note(name='C'), Note(name='D'), Note(name='E'),
Note(name='F#'), Note(name='G#'), Note(name='A#'))))
assert s == Scale(Note(name='C'), Note(name='D'), Note(name='E'),
Note(name='F#'), Note(name='G#'), Note(name='A#'))
s = eval(repr(Scale.create_from_root(root=Note(name='C'), strict=True)))
assert s.strict is True
s = eval(repr(Scale.create_from_root(root=Note(name='C'), strict=False)))
assert s.strict is False