def test_close_polyphonic_context(self):
context = midi2lily.PolyphonicContext()
# voice 1
melody_expression = midi2lily.CompoundExpression()
melody_expression.add(
midi2lily.Note(midi2lily.Pitch(72),
midi2lily.Duration(Fraction(4, 4))))
context.add(melody_expression)
# voice 2 (unbalanced)
rythm_expression = midi2lily.CompoundExpression()
rythm_expression.add(
midi2lily.Note(midi2lily.Pitch(64),
midi2lily.Duration(Fraction(2, 4))))
context.add(rythm_expression)
# before closing the context is unbalanced
self.assertTrue(not context.is_balanced())
context.close()
# after closing, the context is balanced by adding a rest
self.assertTrue(context.is_balanced())
self.assertEqual(str(context), "<<\n{\nc''1 }\n\\\\\n{\ne'2 r2 }\n>>")
def test_polyphonic_context_is_balanced(self):
context = midi2lily.PolyphonicContext()
# voice 1
melody_expression = midi2lily.CompoundExpression()
melody_expression.add(
midi2lily.Note(midi2lily.Pitch(72),
midi2lily.Duration(Fraction(4, 4))))
context.add(melody_expression)
# voice 2
rythm_expression = midi2lily.CompoundExpression()
rythm_expression.add(
midi2lily.Note(midi2lily.Pitch(64),
midi2lily.Duration(Fraction(2, 4))))
rythm_expression.add(
midi2lily.Note(midi2lily.Pitch(67),
midi2lily.Duration(Fraction(2, 4))))
context.add(rythm_expression)
self.assertTrue(context.is_balanced())
def test_polyphonic_context(self):
context = midi2lily.PolyphonicContext()
# voice 1
melody_expression = midi2lily.CompoundExpression()
melody_expression.add(
midi2lily.Note(midi2lily.Pitch(72),
midi2lily.Duration.get_duration(2, 1, 4)))
context.add(melody_expression)
# voice 2
rythm_expression = midi2lily.CompoundExpression()
rythm_expression.add(
midi2lily.Note(midi2lily.Pitch(64),
midi2lily.Duration.get_duration(1, 1, 4)))
rythm_expression.add(
midi2lily.Note(midi2lily.Pitch(67),
midi2lily.Duration.get_duration(1, 1, 4)))
context.add(rythm_expression)
self.assertEqual(str(context), "<<\n{\nc''2 }\n\\\\\n{\ne'4 g'4 }\n>>")
def test_bass_clef(self):
expression = midi2lily.CompoundExpression()
expression.add(
midi2lily.Note(midi2lily.Pitch(54),
midi2lily.Duration.get_duration(1, 1, 4)))
expression.add(
midi2lily.Note(midi2lily.Pitch(60),
midi2lily.Duration.get_duration(1, 1, 4)))
self.assertEqual(len(expression.pitches()), 2)
self.assertEqual(expression.lowest_pitch(), 54)
self.assertEqual(expression.highest_pitch(), 60)
self.assertEqual(expression.get_clef(), 'bass')
def test_duplicate_pitches(self):
expression = midi2lily.CompoundExpression()
expression.add(
midi2lily.Note(midi2lily.Pitch(60),
midi2lily.Duration.get_duration(1, 1, 4)))
expression.add(
midi2lily.Note(midi2lily.Pitch(60),
midi2lily.Duration.get_duration(1, 1, 4)))
self.assertEqual(len(expression.pitches()), 1)
self.assertEqual(expression.lowest_pitch(), 60)
self.assertEqual(expression.highest_pitch(), 60)
self.assertEqual(expression.get_clef(), None)
def test_divisable_expression(self):
expression = midi2lily.CompoundExpression()
expression.add(
midi2lily.Note(midi2lily.Pitch(79),
midi2lily.Duration.get_duration(1, 1, 1)))
expression.add(
midi2lily.Note(midi2lily.Pitch(79),
midi2lily.Duration.get_duration(1, 1, 1)))
self.assertEqual(str(expression), "{\ng''1 g''1 }")
new_expression = expression.split_at(1)
self.assertEqual(str(expression), "{\ng''1 }")
self.assertEqual(str(new_expression), "{\ng''1 }")
def test_expression_with_notes(self):
expression = midi2lily.CompoundExpression()
note = midi2lily.Note(midi2lily.Pitch(60),
midi2lily.Duration.get_duration(1, 1, 4))
expression.add(note)
self.assertEqual(str(expression), "{\nc'4 }")
def testOneNoteExpression(self):
expression = midi2lily.CompoundExpression()
note = midi2lily.Note(midi2lily.Pitch(60),
midi2lily.Duration.get_duration(1, 1, 4))
expression.add(note)
self.assertEqual(expression.length(), Fraction(1, 4))
def testMultipleMeasuresExpression(self):
expression = midi2lily.CompoundExpression()
for _ in range(12):
note = midi2lily.Note(midi2lily.Pitch(60),
midi2lily.Duration.get_duration(1, 1, 4))
expression.add(note)
self.assertEqual(expression.length(), Fraction(12, 4))
def test_file_with_staff_with_notes(self):
file = midi2lily.File("1")
staff = midi2lily.Staff("trumpet")
# TODO: hide children property
staff.add(
midi2lily.Note(midi2lily.Pitch(79),
midi2lily.Duration.get_duration(4, 4, 4)))
staff.add(
midi2lily.Note(midi2lily.Pitch(79),
midi2lily.Duration.get_duration(4, 4, 4)))
staff.add(
midi2lily.Note(midi2lily.Pitch(79),
midi2lily.Duration.get_duration(6, 4, 4)))
staff.add(
midi2lily.Note(midi2lily.Pitch(77),
midi2lily.Duration.get_duration(2, 4, 4)))
staff.add(
midi2lily.Note(midi2lily.Pitch(76),
midi2lily.Duration.get_duration(3, 4, 4)))
staff.add(
midi2lily.Note(midi2lily.Pitch(74),
midi2lily.Duration.get_duration(1, 4, 4)))
staff.add(
midi2lily.Note(midi2lily.Pitch(72),
midi2lily.Duration.get_duration(3, 4, 4)))
staff.add(
midi2lily.Note(midi2lily.Pitch(76),
midi2lily.Duration.get_duration(1, 4, 4)))
staff.add(
midi2lily.Note(midi2lily.Pitch(74),
midi2lily.Duration.get_duration(4, 4, 4)))
staff.add(
midi2lily.Note(midi2lily.Pitch(67),
midi2lily.Duration.get_duration(4, 4, 4)))
file.add(staff)
self.assertEqual(
str(file),
"\\version \"1\"\n\n\\new Staff = \"trumpet\" \\relative c' {\ng'4 g g4. f8 |\ne8. d16 c8. e16 d4 g, |\n}"
)
def test_non_divisable_expression2(self):
expression = midi2lily.CompoundExpression()
expression.add(
midi2lily.Note(midi2lily.Pitch(79),
midi2lily.Duration.get_duration(4, 4, 4)))
self.assertEqual(len(expression._children), 1)
new_expression = expression.split_at(0)
self.assertEqual(len(expression._children), 0)
self.assertEqual(str(new_expression), "{\ng''4 }")
def test_two_measures(self):
expression = midi2lily.CompoundExpression()
expression.add(
midi2lily.Note(midi2lily.Pitch(79),
midi2lily.Duration.get_duration(4, 4, 4)))
expression.add(
midi2lily.Note(midi2lily.Pitch(79),
midi2lily.Duration.get_duration(4, 4, 4)))
expression.add(
midi2lily.Note(midi2lily.Pitch(79),
midi2lily.Duration.get_duration(4, 4, 4)))
expression.add(
midi2lily.Note(midi2lily.Pitch(79),
midi2lily.Duration.get_duration(4, 4, 4)))
expression.add(
midi2lily.Note(midi2lily.Pitch(79),
midi2lily.Duration.get_duration(4, 2, 4)))
expression.add(
midi2lily.Note(midi2lily.Pitch(79),
midi2lily.Duration.get_duration(4, 2, 4)))
self.assertEqual(str(expression), "{\ng''4 g''4 g''4 g''4 g''2 g''2 }")
new_expression = expression.split_at(1)
self.assertEqual(str(expression), "{\ng''4 g''4 g''4 g''4 }")
self.assertEqual(str(new_expression), "{\ng''2 g''2 }")
def test_duration_crossing_measure(self):
# 1/2 note duration...
note = midi2lily.Note(midi2lily.Pitch(60),
midi2lily.Duration(Fraction(1, 2)))
# ...rendered in 4/4 time at beat 3 of first measure...
context = midi2lily.RenderContext()
context.time_signature = midi2lily.TimeSignature(4, 4)
context.position = Fraction(3, 4)
# should be rendered as tied 1/4 note durations when crossing the measure
self.assertEqual(note.__str__(context), "c4~ | 4")
def testNote(self):
pitch = midi2lily.Pitch(60)
duration = midi2lily.Duration.get_duration(1, 1, 4)
note = midi2lily.Note(pitch, duration)
self.assertEqual(str(note), "c'4")
def test_staff_with_notes(self):
staff = midi2lily.Staff("trumpet")
note = midi2lily.Note(midi2lily.Pitch(60),
midi2lily.Duration.get_duration(1, 1, 4))
staff.add(note)
self.assertEqual(str(staff), "\\new Staff = \"trumpet\" {\nc\'4 }")