def test_create_from_root_with_int_octave():
s = Scale.create_from_root(root=Note(name='C', octave=2),
scale_type=Scale.MINOR_TYPE,
alt=Note.FLAT,
octave=2)
assert s.notes[0] == Note(name='C', octave=2)
assert s.notes[1] == Note(name='D', octave=2)
assert s.notes[2] == Note(name='Eb', octave=2)
assert s.notes[3] == Note(name='F', octave=2)
assert s.notes[4] == Note(name='G', octave=2)
assert s.notes[5] == Note(name='Ab', octave=2)
assert s.notes[6] == Note(name='Bb', octave=2) in s.notes
s = Scale.create_from_root(root=Note(name='C', octave=2),
scale_type=Scale.MINOR_TYPE,
alt=Note.FLAT,
octave=2,
order=Scale.DESCENDING_SCALE_TYPE)
assert s.notes[0] == Note(name='Bb', octave=2)
assert s.notes[1] == Note(name='Ab', octave=2)
assert s.notes[2] == Note(name='G', octave=2)
assert s.notes[3] == Note(name='F', octave=2)
assert s.notes[4] == Note(name='Eb', octave=2)
assert s.notes[5] == Note(name='D', octave=2)
assert s.notes[6] == Note(name='C', octave=2)
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_create_from_root_with_callable_octave():
s = Scale.create_from_root(
root=Note(name='C', octave=3),
scale_type=Scale.MINOR_TYPE,
alt=Note.FLAT,
octave=lambda root_octave, i, distance: root_octave + 1)
assert s.notes[0] == Note(name='C', octave=3)
assert s.notes[1] == Note(name='D', octave=4)
assert s.notes[2] == Note(name='Eb', octave=4)
assert s.notes[3] == Note(name='F', octave=4)
assert s.notes[4] == Note(name='G', octave=4)
assert s.notes[5] == Note(name='Ab', octave=4)
assert s.notes[6] == Note(name='Bb', octave=4)
s = Scale.create_from_root(
root=Note(name='C', octave=3),
scale_type=Scale.MINOR_TYPE,
alt=Note.FLAT,
order=Scale.DESCENDING_SCALE_TYPE,
octave=lambda root_octave, i, distance: root_octave + 1)
assert s.notes[0] == Note(name='Bb', octave=4)
assert s.notes[1] == Note(name='Ab', octave=4)
assert s.notes[2] == Note(name='G', octave=4)
assert s.notes[3] == Note(name='F', octave=4)
assert s.notes[4] == Note(name='Eb', octave=4)
assert s.notes[5] == Note(name='D', octave=4)
assert s.notes[6] == Note(name='C', octave=3)
def test_create_from_root_with_from_root_octave():
s = Scale.create_from_root(root=Note(name='C', octave=3),
scale_type=Scale.MINOR_TYPE,
alt=Note.FLAT,
octave=NoteList.OCTAVE_TYPE_FROM_ROOT)
assert s.notes[0] == Note(name='C', octave=3)
assert s.notes[1] == Note(name='D', octave=3)
assert s.notes[2] == Note(name='Eb', octave=3)
assert s.notes[3] == Note(name='F', octave=3)
assert s.notes[4] == Note(name='G', octave=3)
assert s.notes[5] == Note(name='Ab', octave=3)
assert s.notes[6] == Note(name='Bb', octave=3)
s = Scale.create_from_root(root=Note(name='F', octave=3),
scale_type=Scale.MAJOR_TYPE,
alt=Note.FLAT,
octave=NoteList.OCTAVE_TYPE_FROM_ROOT,
order=Scale.ASCENDING_SCALE_TYPE)
assert s.notes[0] == Note(name='F', octave=3)
assert s.notes[1] == Note(name='G', octave=3)
assert s.notes[2] == Note(name='A', octave=3)
assert s.notes[3] == Note(name='Bb', octave=3)
assert s.notes[4] == Note(name='C', octave=4)
assert s.notes[5] == Note(name='D', octave=4)
assert s.notes[6] == Note(name='E', octave=4)
s = Scale.create_from_root(root=Note(name='C', octave=3),
scale_type=Scale.MINOR_TYPE,
alt=Note.FLAT,
octave=NoteList.OCTAVE_TYPE_FROM_ROOT,
order=Scale.DESCENDING_SCALE_TYPE)
assert s.notes[0] == Note(name='Bb', octave=3)
assert s.notes[1] == Note(name='Ab', octave=3)
assert s.notes[2] == Note(name='G', octave=3)
assert s.notes[3] == Note(name='F', octave=3)
assert s.notes[4] == Note(name='Eb', octave=3)
assert s.notes[5] == Note(name='D', octave=3)
assert s.notes[6] == Note(name='C', octave=3)
s = Scale.create_from_root(root=Note(name='F', octave=3),
scale_type=Scale.MAJOR_TYPE,
alt=Note.FLAT,
octave=NoteList.OCTAVE_TYPE_FROM_ROOT,
order=Scale.DESCENDING_SCALE_TYPE)
assert s.notes[0] == Note(name='E', octave=4)
assert s.notes[1] == Note(name='D', octave=4)
assert s.notes[2] == Note(name='C', octave=4)
assert s.notes[3] == Note(name='Bb', octave=3)
assert s.notes[4] == Note(name='A', octave=3)
assert s.notes[5] == Note(name='G', octave=3)
assert s.notes[6] == Note(name='F', octave=3)
def test_remove_note_strict():
s = Scale.create_from_root(root=Note(name='C'))
with pytest.raises(ScaleException) as exc:
s.remove_note(octave=4)
assert 'Invalid Scale.' == str(exc.value)
assert len(s.notes) == 7
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='F')
assert s.notes[4] == Note(name='G')
assert s.notes[5] == Note(name='A')
assert s.notes[6] == Note(name='B')
s = Scale(Note(name='C'))
with pytest.raises(ScaleException) as exc:
s.remove_note(name='C')
assert 'Invalid Scale.' == str(exc.value)
assert len(s.notes) == 1
assert s.notes[0] == Note(name='C')
with pytest.raises(AttributeError) as exc:
Scale(Note(name='C'), Note(name='E'),
Note(name='G')).remove_note(note='invalid')
assert "'str' object has no attribute 'freq'" == str(exc.value)
with pytest.raises(ScaleException) as exc:
Scale(strict=False).remove_note(note='invalid')
assert 'Invalid Scale.' == str(exc.value)
def test_remove_note():
s = Scale.create_from_root(root=Note(name='C'))
s.remove_note(note=Note(name='B'))
assert len(s.notes) == 6
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='F')
assert s.notes[4] == Note(name='G')
assert s.notes[5] == Note(name='A')
s = Scale.create_from_root(root=Note(name='C'))
s.remove_note(note=Note(name='A'))
assert len(s.notes) == 6
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='F')
assert s.notes[4] == Note(name='G')
assert s.notes[5] == Note(name='B')
def test_create_from_root_with_none_octave():
s = Scale.create_from_root(root=Note(name='C', octave=4),
scale_type=Scale.MAJOR_TYPE,
alt=Note.FLAT,
octave=None)
assert s.notes[0] == Note(name='C', octave=4)
assert s.notes[1] == Note(name='D', octave=4)
assert s.notes[2] == Note(name='E', octave=4)
assert s.notes[3] == Note(name='F', octave=4)
assert s.notes[4] == Note(name='G', octave=4)
assert s.notes[5] == Note(name='A', octave=4)
assert s.notes[6] == Note(name='B', octave=4)
s = Scale.create_from_root(root=Note(name='C'),
order=Scale.DESCENDING_SCALE_TYPE)
assert s.notes[0] == Note(name='B')
assert s.notes[1] == Note(name='A')
assert s.notes[2] == Note(name='G')
assert s.notes[3] == Note(name='F')
assert s.notes[4] == Note(name='E')
assert s.notes[5] == Note(name='D')
assert s.notes[6] == Note(name='C')
def test_create_from_root():
s = Scale.create_from_root(root=Note(name='C'))
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='F')
assert s.notes[4] == Note(name='G')
assert s.notes[5] == Note(name='A')
assert s.notes[6] == Note(name='B')
s = Scale.create_from_root(root=Note(name='C'),
scale_type=Scale.MINOR_TYPE,
alt=Note.FLAT,
order=Scale.ASCENDING_SCALE_TYPE)
assert s.notes[0] == Note(name='C')
assert s.notes[1] == Note(name='D')
assert s.notes[2] == Note(name='Eb')
assert s.notes[3] == Note(name='F')
assert s.notes[4] == Note(name='G')
assert s.notes[5] == Note(name='Ab')
assert s.notes[6] == Note(name='Bb')
s = Scale.create_from_root(root=Note(name='C'),
order=Scale.DESCENDING_SCALE_TYPE)
assert s.notes[0] == Note(name='B')
assert s.notes[1] == Note(name='A')
assert s.notes[2] == Note(name='G')
assert s.notes[3] == Note(name='F')
assert s.notes[4] == Note(name='E')
assert s.notes[5] == Note(name='D')
assert s.notes[6] == Note(name='C')
s = Scale.create_from_root(root=Note(name='C'),
scale_type=Scale.MINOR_TYPE,
alt=Note.FLAT,
order=Scale.DESCENDING_SCALE_TYPE)
assert s.notes[0] == Note(name='Bb')
assert s.notes[1] == Note(name='Ab')
assert s.notes[2] == Note(name='G')
assert s.notes[3] == Note(name='F')
assert s.notes[4] == Note(name='Eb')
assert s.notes[5] == Note(name='D')
assert s.notes[6] == Note(name='C')
assert Scale.create_from_root(root=Note(name='C')).strict is True
assert Scale.create_from_root(root=Note(name='C'),
strict=True).strict is True
assert Scale.create_from_root(root=Note(name='C'),
strict=False).strict is False
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
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_remove_note_strict_false():
s = Scale(Note(name='C'))
s.remove_note(note=Note(name='C'), strict=False)
assert len(s.notes) == 0
c = Scale(Note(name='E'))
c.remove_note(note=Note(name='E'), strict=False)
assert len(c.notes) == 0
try:
Scale(Note(name='C'), Note(name='D'),
Note(name='E')).remove_note(note=Note(name='A'), strict=False)
Scale(Note(name='C'), Note(name='D'),
Note(name='E')).remove_note(octave=3, strict=False)
Scale(Note(name='C'), Note(name='D'),
Note(name='E')).remove_note(octave=4, strict=False)
Scale(Note(name='C'), Note(name='D'),
Note(name='E')).remove_note(freq=12, strict=False)
except ScaleException:
pytest.fail('Unexpected ScaleException')
with pytest.raises(AttributeError) as exc:
Scale(Note(name='C'), Note(name='E'),
Note(name='G')).remove_note(note='invalid', strict=False)
assert "'str' object has no attribute 'freq'" == str(exc.value)
def test_add_note():
s = Scale(Note(name='C'), Note(name='D'))
s.add_note(Note(name='E'))
assert len(s.notes) == 3
assert s.notes[2] == Note(name='E')
s.add_note(Note(name='Bb', octave=3))
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')
s = Scale.create_from_root(root=Note(name='C'))
s.add_note(Note(name='C', octave=5))
assert len(s.notes) == 8
assert s.notes[7] == Note(name='C', octave=5)
with pytest.raises(ScaleException) as exc:
s.add_note(note=Note(name='C'))
assert len(s.notes) == 8
assert 'Note C4 is alredy in Scale.' == str(exc.value)
with pytest.raises(ScaleException) as exc:
s.add_note(note=Note(name='E'))
assert len(s.notes) == 8
assert 'Note E4 is alredy in Scale.' == str(exc.value)
s.add_note(note=Note(name='E'), strict=False)
assert len(s.notes) == 8
s.add_note(note=Note(name='C'), strict=False)
assert len(s.notes) == 8
def test_create_from_root_with_scale_type():
s = Scale.create_from_root(root=Note(name='C'),
scale_type=Scale.MAJOR_TYPE)
assert s == Scale(Note(name='C'), Note(name='D'), Note(name='E'),
Note(name='F'), Note(name='G'), Note(name='A'),
Note(name='B'))
s = Scale.create_from_root(root=Note(name='C'),
scale_type=Scale.MINOR_TYPE)
assert s == Scale(Note(name='C'), Note(name='D'), Note(name='Eb'),
Note(name='F'), Note(name='G'), Note(name='Ab'),
Note(name='Bb'))
s = Scale.create_from_root(root=Note(name='C'),
scale_type=Scale.IONIAN_TYPE)
assert s == Scale(Note(name='C'), Note(name='D'), Note(name='E'),
Note(name='F'), Note(name='G'), Note(name='A'),
Note(name='B'))
s = Scale.create_from_root(root=Note(name='C'),
scale_type=Scale.DORIAN_TYPE)
assert s == Scale(Note(name='C'), Note(name='D'), Note(name='Eb'),
Note(name='F'), Note(name='G'), Note(name='A'),
Note(name='Bb'))
s = Scale.create_from_root(root=Note(name='C'),
scale_type=Scale.PHRIGIAN_TYPE)
assert s == Scale(Note(name='C'), Note(name='Db'), Note(name='Eb'),
Note(name='F'), Note(name='G'), Note(name='Ab'),
Note(name='Bb'))
s = Scale.create_from_root(root=Note(name='C'),
scale_type=Scale.LIDYAN_TYPE)
assert s == Scale(Note(name='C'), Note(name='D'), Note(name='E'),
Note(name='F#'), Note(name='G'), Note(name='A'),
Note(name='B'))
s = Scale.create_from_root(root=Note(name='C'),
scale_type=Scale.DOMINANT_TYPE)
assert s == Scale(Note(name='C'), Note(name='D'), Note(name='E'),
Note(name='F'), Note(name='G'), Note(name='A'),
Note(name='Bb'))
s = Scale.create_from_root(root=Note(name='C'),
scale_type=Scale.AEOLIAN_TYPE)
assert s == Scale(Note(name='C'), Note(name='D'), Note(name='Eb'),
Note(name='F'), Note(name='G'), Note(name='Ab'),
Note(name='Bb'))
s = Scale.create_from_root(root=Note(name='C'),
scale_type=Scale.LOCRIAN_TYPE)
assert s == Scale(Note(name='C'), Note(name='Db'), Note(name='Eb'),
Note(name='F'), Note(name='Gb'), Note(name='Ab'),
Note(name='Bb'))
s = Scale.create_from_root(root=Note(name='C'),
scale_type=Scale.PENTATONIC_TYPE)
assert s == Scale(Note(name='C'), Note(name='D'), Note(name='E'),
Note(name='G'), Note(name='A'))
s = Scale.create_from_root(root=Note(name='C'),
scale_type=Scale.PENTATONIC_MINOR_TYPE)
assert s == Scale(Note(name='C'), Note(name='Eb'), Note(name='F'),
Note(name='G'), Note(name='Bb'))
s = Scale.create_from_root(root=Note(name='C'),
scale_type=Scale.BLUES_TYPE)
assert s == Scale(Note(name='C'), Note(name='D'), Note(name='Eb'),
Note(name='E'), Note(name='G'), Note(name='A'))
s = Scale.create_from_root(root=Note(name='C'),
scale_type=Scale.BLUES_MINOR_TYPE)
assert s == Scale(Note(name='C'), Note(name='Eb'), Note(name='F'),
Note(name='Gb'), Note(name='G'), Note(name='Bb'))
s = Scale.create_from_root(root=Note(name='C'),
scale_type=Scale.MELODIC_MINOR_TYPE)
assert s == Scale(Note(name='C'), Note(name='D'), Note(name='Eb'),
Note(name='F'), Note(name='G'), Note(name='A'),
Note(name='B'))
s = Scale.create_from_root(root=Note(name='C'),
scale_type=Scale.HARMONIC_MINOR_TYPE)
assert s == Scale(Note(name='C'), Note(name='D'), Note(name='Eb'),
Note(name='F'), Note(name='G'), Note(name='Ab'),
Note(name='B'))
s = Scale.create_from_root(root=Note(name='C'),
scale_type=Scale.HARMONIC_MAJOR_TYPE)
assert s == Scale(Note(name='C'), Note(name='D'), Note(name='E'),
Note(name='F'), Note(name='G'), Note(name='Ab'),
Note(name='B'))