def setUpClass(cls):
cls.tonic_quarter = Relative_Note(Relative_Pitch(0, Degrees.TONIC, 0),
1)
cls.subdominant_quarter = Relative_Note(
Relative_Pitch(0, Degrees.SUBDOMINANT, 0), 1)
cls.subdominant_dotted_quarter = Relative_Note(
Relative_Pitch(0, Degrees.SUBDOMINANT, 0), 1.5)
def test_hash(self):
this_class = Test_Relative_Pitch
self.assertEqual(hash(this_class.low_leading_enharmonic),
hash(this_class.low_leading_enharmonic), 'identity')
self.assertEqual(hash(this_class.middle_subdominant_sharp),
hash(Relative_Pitch(0, Degrees.SUBDOMINANT, 1)))
self.assertEqual(hash(this_class.higher_mediant),
hash(Relative_Pitch(2, Degrees.MEDIANT, 0)))
def test_hash(self):
this_class = Test_Relative_Note
self.assertEqual(hash(this_class.tonic_quarter),
hash(this_class.tonic_quarter), 'identity')
self.assertEqual(
hash(this_class.tonic_quarter),
hash(Absolute_Note(Relative_Pitch(0, Degrees.TONIC, 0), 1)))
self.assertEqual(
hash(this_class.subdominant_dotted_quarter),
hash(Relative_Note(Relative_Pitch(0, Degrees.SUBDOMINANT, 0),
1.5)))
def test_eq(self):
this_class = Test_Relative_Note
self.assertEqual(this_class.tonic_quarter, this_class.tonic_quarter,
'identity')
self.assertEqual(this_class.tonic_quarter,
Relative_Note(Relative_Pitch(0, Degrees.TONIC, 0), 1),
'same note')
self.assertFalse(
this_class.tonic_quarter == Relative_Note_Alt(
Relative_Pitch(0, Degrees.TONIC, 0), 1), 'different classes')
self.assertNotEqual(this_class.tonic_quarter,
this_class.subdominant_quarter,
'different pitches')
self.assertNotEqual(this_class.subdominant_dotted_quarter,
this_class.subdominant_quarter,
'different durations')
def setUpClass(cls):
cls.low_leading_tone = Relative_Pitch(-2, Degrees.LEADING_TONE, 0)
cls.low_leading_enharmonic = Relative_Pitch(-1, Degrees.TONIC, -1)
cls.middle_tonic = Relative_Pitch(0, Degrees.TONIC, 0)
cls.middle_subdominant = Relative_Pitch(0, Degrees.SUBDOMINANT, 0)
cls.middle_subdominant_sharp = Relative_Pitch(0, Degrees.SUBDOMINANT,
1)
cls.high_mediant = Relative_Pitch(1, Degrees.MEDIANT, 0)
cls.higher_mediant = Relative_Pitch(2, Degrees.MEDIANT, 0)
def make_piece(length, key):
# length is in number of notes; key is an interval up from C
current_triad = Degrees.TONIC
current_length = 1
target_length = length
part_names = ['soprano', 'alto', 'tenor', 'bass']
parts = {}
for part, instrument in zip(part_names, ('violin', 'violin', 'viola', 'cello')):
parts[part] = Part(key, part, Instrument(instrument))
current_pitches = (Relative_Pitch(2, Degrees.TONIC, 0), Relative_Pitch(1, Degrees.MEDIANT, 0), Relative_Pitch(0, Degrees.DOMINANT, 0), (Relative_Pitch(-1, Degrees.TONIC, 0)))
for part_name, pitch in zip(part_names, current_pitches):
parts[part_name].extend(Relative_Note(pitch, 1))
piece = (Piece((parts['soprano'], parts['alto'], parts['tenor'], parts['bass'])))
while current_length < target_length:
next_triad = random.choice(list(next_triad_major(current_triad)))
piece.extend(next_triad, (0,))
current_triad = next_triad
current_length += 1
return piece
def test_eq_true(self):
self.assertEqual(Test_Relative_Pitch.middle_tonic,
Relative_Pitch(0, Degrees.TONIC, 0), 'same pitch')