def test_define_using_intervals(self):
a = PCGroup.from_intervals('D', '1 2 b3 4 5 6 b7')
self.assertEqual(a.pcs, [2, 4, 5, 7, 9, 11, 0])
self.assertEqual(a.midis, [62, 64, 65, 67, 69, 71, 72])
b = PCGroup.from_intervals('D6', '1 2 b3 4 5 6 b7')
self.assertEqual(b.midis, [86, 88, 89, 91, 93, 95, 96])
a = PCGroup.from_intervals('C', '1 3 5')
print(str(a))
def test_nth_rotation(self):
a = PCGroup.from_intervals('C', '1 2 3 4 5 6 7')
b = a.nth_rotation(3)
self.assertEqual(a.pcs, [0, 2, 4, 5, 7, 9, 11])
self.assertEqual(b.pcs, [5, 7, 9, 11, 0, 2, 4])
self.assertEqual(a.midis, [60, 62, 64, 65, 67, 69, 71])
self.assertEqual(b.midis, [65, 67, 69, 71, 72, 74, 76])
def test_getitem(
self
): # demonstrating generation of continuous pitches using indexing
a = PCGroup.from_intervals('C', '1 2 3 4 5 6 7')
this_oct = a[0]
higher_oct = a[7]
lower_oct = a[-7]
self.assertEqual(this_oct.oct, 0)
self.assertEqual(higher_oct.oct, 1)
self.assertEqual(lower_oct.oct, -1)
with self.assertRaises(MidiNoteError):
note = a[-36]
with self.assertRaises(MidiNoteError):
note = a[40]
def test_logical_and_operations(self):
a = PCGroup.from_names('C E G B')
b = PCGroup.from_names('D F G')
aandb = a & b
aorb = a | b
axorb = a ^ b
ainv = ~aorb
self.assertEqual(aandb, PCGroup.from_names('G'))
self.assertEqual(aorb, PCGroup.from_names('C D E F G B'))
self.assertEqual(axorb, PCGroup.from_names('C D E F B'))
self.assertEqual(ainv, PCGroup.from_names('C# D# F# G# A A#'))
def test_root_get_and_set(self):
a = PCGroup.from_intervals('D', '1 2 b3 4 5 6 b7')
self.assertEqual(a.root, 'D')
a.root = PC('E') # this is same as a transpose operation
self.assertEqual(a.pcs, [4, 6, 7, 9, 11, 1, 2])
def test_define_from_midi_notevals(self):
# Todo: test from list, numpy and MidiTable
a = PCGroup.from_midi([60, 62, 64, 65, 67, 69, 71])
b = PCGroup.from_names('C D E F G A B')
self.assertEqual(a, b)
def test_define_using_notenames(self):
a = PCGroup.from_names('C D E F# G A B')
self.assertEqual(a.notes, [0, 2, 4, 6, 7, 9, 11])
def test_set_behaviour(self):
a = PCGroup.from_names('C5 E G C4 C6')
def test_intervals(self):
a = PCGroup.from_names('G A B C D E F#')
self.assertEqual(a.intervals(), [0, 2, 4, 5, 7, 9, 11])
# self.assertEqual(str(a), 'G A B C D E F#')
self.assertEqual(a.intervals(PC('C#')), [6, 8, 10, 11, 1, 3, 5])
def test_get_by_slicing(self):
a = PCGroup.from_names('C D E F')
b = a[1:7]
self.assertEqual(a.midis, [60, 62, 64, 65])
self.assertEqual(b.midis, [62, 64, 65, 72, 74, 76])
def test_get_idx_by_pc(self):
a = PCGroup.from_intervals('C', '1 2 3 4 5 6 7')
idxs = range(-7, 14)
[self.assertEqual(i, a.get_idx_by_pc(a[i])) for i in idxs]
with self.assertRaises(PitchGroupError):
a.get_idx_by_pc(PC('D#'))
def test_iteration(self):
a = PCGroup.from_names('C E G')
notes = [PC('C'), PC('E'), PC('G')]
[self.assertEqual(note, target) for note, target in zip(a, notes)]