123 lines
5.2 KiB
Python
123 lines
5.2 KiB
Python
# Copyright 2016 Google Inc. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Tests for chord_symbols_lib."""
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# internal imports
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import tensorflow as tf
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from magenta.music import chord_symbols_lib
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CHORD_QUALITY_MAJOR = chord_symbols_lib.CHORD_QUALITY_MAJOR
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CHORD_QUALITY_MINOR = chord_symbols_lib.CHORD_QUALITY_MINOR
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CHORD_QUALITY_AUGMENTED = chord_symbols_lib.CHORD_QUALITY_AUGMENTED
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CHORD_QUALITY_DIMINISHED = chord_symbols_lib.CHORD_QUALITY_DIMINISHED
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CHORD_QUALITY_OTHER = chord_symbols_lib.CHORD_QUALITY_OTHER
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class ChordSymbolFunctionsTest(tf.test.TestCase):
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def setUp(self):
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self.chord_symbol_functions = chord_symbols_lib.ChordSymbolFunctions.get()
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def testTranspose(self):
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# Test basic triads.
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figure = self.chord_symbol_functions.transpose_chord_symbol('C', 2)
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self.assertEqual('D', figure)
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figure = self.chord_symbol_functions.transpose_chord_symbol('A-m', -3)
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self.assertEqual('Fm', figure)
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figure = self.chord_symbol_functions.transpose_chord_symbol('F#', 0)
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self.assertEqual('F#', figure)
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# Test more complex chords.
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figure = self.chord_symbol_functions.transpose_chord_symbol('Co7', 7)
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self.assertEqual('Go7', figure)
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figure = self.chord_symbol_functions.transpose_chord_symbol('D+', -3)
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self.assertEqual('B+', figure)
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figure = self.chord_symbol_functions.transpose_chord_symbol('F-9/A-', 2)
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self.assertEqual('G-9/B-', figure)
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def testMidiPitches(self):
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# Check that pitch classes are correct.
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pitches = self.chord_symbol_functions.chord_symbol_midi_pitches('Am')
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pitch_classes = set(pitch % 12 for pitch in pitches)
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self.assertEqual(set([0, 4, 9]), pitch_classes)
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pitches = self.chord_symbol_functions.chord_symbol_midi_pitches('D7b9')
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pitch_classes = set(pitch % 12 for pitch in pitches)
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self.assertEqual(set([0, 2, 3, 6, 9]), pitch_classes)
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pitches = self.chord_symbol_functions.chord_symbol_midi_pitches('Fm7b5')
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pitch_classes = set(pitch % 12 for pitch in pitches)
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self.assertEqual(set([3, 5, 8, 11]), pitch_classes)
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# Check that bass notes are correct.
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pitches = self.chord_symbol_functions.chord_symbol_midi_pitches('B-7')
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bass_pitch_class = min(pitches) % 12
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self.assertEqual(10, bass_pitch_class)
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pitches = self.chord_symbol_functions.chord_symbol_midi_pitches('A/G')
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bass_pitch_class = min(pitches) % 12
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self.assertEqual(7, bass_pitch_class)
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pitches = self.chord_symbol_functions.chord_symbol_midi_pitches('F#dim7')
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bass_pitch_class = min(pitches) % 12
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self.assertEqual(6, bass_pitch_class)
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def testRoot(self):
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root = self.chord_symbol_functions.chord_symbol_root('Dm9')
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self.assertEqual(2, root)
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root = self.chord_symbol_functions.chord_symbol_root('E/G#')
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self.assertEqual(4, root)
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root = self.chord_symbol_functions.chord_symbol_root('Bsus2')
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self.assertEqual(11, root)
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root = self.chord_symbol_functions.chord_symbol_root('A-maj7')
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self.assertEqual(8, root)
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def testQuality(self):
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# Test major chords.
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quality = self.chord_symbol_functions.chord_symbol_quality('B13')
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self.assertEqual(CHORD_QUALITY_MAJOR, quality)
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quality = self.chord_symbol_functions.chord_symbol_quality('E7#9')
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self.assertEqual(CHORD_QUALITY_MAJOR, quality)
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quality = self.chord_symbol_functions.chord_symbol_quality('Fadd2/E-')
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self.assertEqual(CHORD_QUALITY_MAJOR, quality)
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# Test minor chords.
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quality = self.chord_symbol_functions.chord_symbol_quality('C#m9')
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self.assertEqual(CHORD_QUALITY_MINOR, quality)
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quality = self.chord_symbol_functions.chord_symbol_quality('Gm7/B-')
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self.assertEqual(CHORD_QUALITY_MINOR, quality)
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quality = self.chord_symbol_functions.chord_symbol_quality('C-mM7')
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self.assertEqual(CHORD_QUALITY_MINOR, quality)
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# Test augmented chords.
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quality = self.chord_symbol_functions.chord_symbol_quality('D+/A#')
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self.assertEqual(CHORD_QUALITY_AUGMENTED, quality)
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quality = self.chord_symbol_functions.chord_symbol_quality('Aaug')
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self.assertEqual(CHORD_QUALITY_AUGMENTED, quality)
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# Test diminished chords.
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quality = self.chord_symbol_functions.chord_symbol_quality('Am7b5')
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self.assertEqual(CHORD_QUALITY_DIMINISHED, quality)
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quality = self.chord_symbol_functions.chord_symbol_quality('Edim7')
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self.assertEqual(CHORD_QUALITY_DIMINISHED, quality)
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# Test other chords.
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quality = self.chord_symbol_functions.chord_symbol_quality('G5')
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self.assertEqual(CHORD_QUALITY_OTHER, quality)
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quality = self.chord_symbol_functions.chord_symbol_quality('B-sus2')
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self.assertEqual(CHORD_QUALITY_OTHER, quality)
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quality = self.chord_symbol_functions.chord_symbol_quality('Dsus')
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self.assertEqual(CHORD_QUALITY_OTHER, quality)
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if __name__ == '__main__':
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tf.test.main()
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