def test_transpose_out_of_range(self):
song_lines = ("*song: transpose = 0\n*track.melody: octave = 8\n c")
parse_string = StringToParse('test_string', song_lines)
song = Song.parse(parse_string)
song_lines = ("*song: transpose = 100\n*track.melody: octave = 8\n c")
parse_string = StringToParse('test_string', song_lines)
song = Song.parse(parse_string)
track_visitor = MidiTrackVisitor(transpose=song.transpose)
note_items = [item for item in song.items if isinstance(item, Note)]
with self.parse_exception('Note number 208 > 127', 'c'):
for note in note_items:
note.visit_midi_track(track_visitor)
def test_parse_2_2_ticks_error(self):
song_lines = "*song: time_signature = 2/2, ticks_per_beat = 1\n" + " e | d e f g | d"
parse_string = StringToParse('test_string', song_lines)
with self.parse_exception(
'ticks per beat of 1 has to be a multiple of crotchets per beat of 2',
'ticks_per_beat'):
song = Song.parse(parse_string)
def test_invalid_transpose_value(self):
song_lines = ("*song: transpose = 310\nc c")
parse_string = StringToParse('test_string', song_lines)
with self.parse_exception(
'Invalid value for transpose: 310 - must be an integer from -127 to 127',
'310'):
song = Song.parse(parse_string)
def test_parse_song_scale(self):
song_lines = "*song: scale = C2 major\n*track.melody: octave = 2\n c e | d e f g | c, d'' "
parse_string = StringToParse('test_string', song_lines)
song = Song.parse(parse_string)
self.assertEquals(
song.scale,
Scale(ScaleNote(0, octave=2),
RelativeScale('major', [0, 2, 4, 5, 7, 9, 11])))
note_items = [item for item in song.items if isinstance(item, Note)]
scale_positions = [
song.scale.get_position(note.midi_note) for note in note_items
]
self.assertEquals(scale_positions, [0, 2, 1, 2, 3, 4, 0, 8])
def test_subticks(self):
song_lines = """
*song: tempo_bpm=120, ticks_per_beat=4, subticks_per_tick = 5
| [C] c
"""
parse_string = StringToParse('test_string', song_lines)
song = Song.parse(parse_string)
self.assertEqualsDisplaying(
song,
Song([
SongValuesCommand([
SetSongTempoBpm(120),
SetSongTicksPerBeat(4),
SetSongSubTicksPerTick(5)
]),
BarLine(),
Chord(ScaleNote(0), descriptor=''),
Note(0, duration=(1, 1))
]))
def test_parse_song_cut(self):
song_lines = """
*song: tempo_bpm=120, ticks_per_beat=4
| [C] c e
[:FAC] e
! c | [G] r2
"""
parse_string = StringToParse('test_string', song_lines)
song = Song.parse(parse_string)
self.assertEqualsDisplaying(
song,
Song([
SongValuesCommand(
[SetSongTempoBpm(120),
SetSongTicksPerBeat(4)]),
Note(0, duration=(1, 1)),
BarLine(),
Chord(ScaleNote(4), descriptor=''),
Rest((2, 1))
]))
def test_transpose(self):
song_lines = (
"*song: transpose = 3\n*track.melody: octave = 2\n*track.chord: octave = 1\n*track.bass:octave = 0\n"
+ "c c [C]")
parse_string = StringToParse('test_string', song_lines)
song = Song.parse(parse_string)
note_items = [item for item in song.items if isinstance(item, Note)]
first_note = note_items[0]
self.assertEquals(first_note.midi_note, 36)
track_visitor = MidiTrackVisitor(transpose=song.transpose)
first_note.visit_midi_track(track_visitor)
self.assertEquals(track_visitor.midi_notes[0], 39)
chord_items = [item for item in song.items if isinstance(item, Chord)]
first_chord = chord_items[0]
self.assertEquals(first_chord.midi_notes, [24, 28, 31])
first_chord.visit_midi_track(track_visitor)
self.assertEquals(track_visitor.midi_notes[1], [27, 31, 34])
self.assertEquals(first_chord.bass_midi_note, 12)
bass_note = song.tracks['bass'].items[0]
bass_note.visit_midi_track(track_visitor)
self.assertEquals(track_visitor.midi_notes[2], 15)
def test_parse_song(self):
parse_string = StringToParse('test_string', self.song_lines)
song = Song.parse(parse_string)
self.assertEqualsDisplaying(
song,
Song([
SongValuesCommand(
[SetSongTempoBpm(120),
SetSongTicksPerBeat(4)]),
TrackValuesCommand('chord',
[SetTrackOctave(2),
SetTrackInstrument(40)]),
TrackValuesCommand(
'bass',
[SetTrackOctave(1), SetTrackVolume(90)]),
Chord(ScaleNote(0), descriptor=''),
Note(0, duration=(1, 1)),
Note(2, duration=(1, 1)),
Chord(ScaleNote(3), other_notes=[ScaleNote(5),
ScaleNote(0)]),
Note(2, duration=(1, 1)),
Note(0, duration=(1, 2)),
Note(0, duration=(1, 2)),
BarLine(),
Chord(ScaleNote(4), descriptor=''),
Note(4, duration=(1, 1)),
Rest((2, 1))
]))
chord_track = song.tracks['chord']
self.assertEquals(chord_track.instrument, 40)
self.assertEquals(song.tracks['bass'].volume, 90)
self.assertEquals(len(chord_track.items), 3)
self.assertEquals(len(song.tracks['melody'].items), 6)
self.assertEquals(chord_track.items[0].midi_notes, [36, 40, 43])
self.assertEquals(chord_track.items[1].bass_midi_note, 29)
self.assertEquals(song.bar_ticks, [0, 16, 32])
def test_note_too_low(self):
song_lines = """*track.melody: octave = 4\n c c, c, c, | c, d, e, f, """
parse_string = StringToParse('test_string', song_lines)
with self.parse_exception('Note number -8 < 0', "e, f, "):
song = Song.parse(parse_string)
def test_note_too_high(self):
song_lines = """*track.melody: octave = 5\n c c' c' c' | c' d d' e'"""
parse_string = StringToParse('test_string', song_lines)
with self.parse_exception('Note number 134 > 127', "d' e'"):
song = Song.parse(parse_string)
def _continuation_song(self, string):
song_lines = "*song: ticks_per_beat=1, time_signature = 4/4\n%s" % string
parse_string = StringToParse('test_string', song_lines)
return Song.parse(parse_string)
def test_parse_3_8(self):
song_lines = "*song: time_signature = 3/8\n" + "ch e | dh e f | ch"
parse_string = StringToParse('test_string', song_lines)
song = Song.parse(parse_string)
def test_parse_3_4(self):
song_lines = "*song: time_signature = 3/4\n" + "c e | d e f | c"
parse_string = StringToParse('test_string', song_lines)
song = Song.parse(parse_string)