def test_chord_pitches(self):
def check_chord(chord_symbol, chord_pitch_names):
new_chord = robatim.Chord(chord_symbol, 0)
pitch_str_sequence = []
for chord_pitch in new_chord.pitches:
pitch_str_sequence.append(str(chord_pitch))
self.assertEqual(chord_pitch_names, pitch_str_sequence)
robatim.Engraver.scale_obj = robatim.Scale("Bb", "ionian")
check_chord("I_MAJ", ["Bb", "D", "F"])
check_chord("V7_MAJ-MIN", ["F", "A", "C", "Eb"])
check_chord("II6_DIM", ["C", "Eb", "Gb"])
check_chord("VI_MIN", ["G", "Bb", "D"])
robatim.Engraver.scale_obj = robatim.Scale("F#", "aeolian")
check_chord("I_MIN", ["F#", "A", "C#"])
check_chord("IV6/5_MIN", ["B", "D", "F#", "A"])
check_chord("bVII_MAJ", ["E", "G#", "B"])
check_chord("I6/4_MIN", ["F#", "A", "C#"])
robatim.Engraver.scale_obj = robatim.Scale()
check_chord("I7_MAJ", ["C", "E", "G", "B"])
check_chord("#IV6_DIM", ["F#", "A", "C"])
check_chord("bIII_AUG", ["Eb", "G", "B"])
check_chord("VII7_HALF-DIM", ["B", "D", "F", "A"])
def test_scalar_shift(self):
robatim.Engraver.scale_obj = robatim.Scale("G", "lydian")
starting_note = robatim.Note("G4")
self.assertEqual(str(starting_note.scalar_shift(1)), "A4")
self.assertEqual(str(starting_note.scalar_shift(-1)), "F#4")
self.assertEqual(str(starting_note.scalar_shift(9)), "B5")
self.assertEqual(str(starting_note.scalar_shift(-11)), "C#3")
robatim.Engraver.scale_obj = robatim.Scale("F", "phrygian")
starting_note = robatim.Note("F3")
self.assertEqual(str(starting_note.scalar_shift(5)), "Db4")
self.assertEqual(str(starting_note.scalar_shift(0)), "F3")
self.assertEqual(str(starting_note.scalar_shift(-5)), "Ab2")
self.assertEqual(str(starting_note.scalar_shift(14)), "F5")
def test_relative_degree(self):
chosen_scale_obj = robatim.Engraver.scale_obj = robatim.Scale("Ab")
starting_note = robatim.Note("Ab4")
chosen_note = robatim.Note("Ab4")
self.assertEqual(
chosen_scale_obj.get_relative_degree(starting_note, chosen_note),
0)
chosen_note = robatim.Note("B3")
self.assertEqual(
chosen_scale_obj.get_relative_degree(starting_note, chosen_note),
-6)
chosen_note = robatim.Note("F####4")
self.assertEqual(
chosen_scale_obj.get_relative_degree(starting_note, chosen_note),
-2)
chosen_note = robatim.Note("Eb2")
self.assertEqual(
chosen_scale_obj.get_relative_degree(starting_note, chosen_note),
-17)
chosen_note = robatim.Note("C5")
self.assertEqual(
chosen_scale_obj.get_relative_degree(starting_note, chosen_note),
2)
chosen_note = robatim.Note("G#6")
self.assertEqual(
chosen_scale_obj.get_relative_degree(starting_note, chosen_note),
13)
chosen_note = robatim.Note("Db5")
self.assertEqual(
chosen_scale_obj.get_relative_degree(starting_note, chosen_note),
3)
def test_scale_degrees(self):
chosen_scale_obj = robatim.Engraver.scale_obj = robatim.Scale("Ab")
chosen_note = robatim.Note("Bb3")
self.assertEqual(chosen_scale_obj.get_absolute_degree(chosen_note), 1)
chosen_note = robatim.Note("F4")
self.assertEqual(chosen_scale_obj.get_absolute_degree(chosen_note), 5)
chosen_note = robatim.Note("Eb2")
self.assertEqual(chosen_scale_obj.get_absolute_degree(chosen_note), 4)
def test_scale_pitches(self):
def analyze_scale_members(chosen_scale_obj, scale_sequence):
for scale_pitch in chosen_scale_obj.scale_pitches_seq:
self.assertIn(str(scale_pitch), scale_sequence)
scale_members = {
("G", "ionian"): ("G", "A", "B", "C", "D", "E", "F#"),
("C", "aeolian"): ("C", "D", "Eb", "F", "G", "Ab", "Bb"),
("D", "dorian"): ("D", "E", "F", "G", "A", "B", "C"),
("G#", "ionian"): ("G#", "A#", "B#", "C#", "D#", "E#", "F##"),
}
for scale_parameters, scale_sequence in scale_members.items():
analyze_scale_members(robatim.Scale(*scale_parameters),
scale_sequence)