mirror of
https://github.com/YuzuZensai/spleeter.git
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86 lines
2.9 KiB
Python
86 lines
2.9 KiB
Python
#!/usr/bin/env python
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# coding: utf8
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""" Unit testing for Separator class. """
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__email__ = 'research@deezer.com'
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__author__ = 'Deezer Research'
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__license__ = 'MIT License'
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import filecmp
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from os.path import basename, exists, join
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from tempfile import TemporaryDirectory
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import pytest
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from spleeter import SpleeterError
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from spleeter.audio.adapter import get_default_audio_adapter
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from spleeter.separator import Separator
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TEST_AUDIO_DESCRIPTOR = 'audio_example.mp3'
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TEST_AUDIO_BASENAME = basename(TEST_AUDIO_DESCRIPTOR)
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TEST_CONFIGURATIONS = [
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('spleeter:2stems', ('vocals', 'accompaniment')),
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('spleeter:4stems', ('vocals', 'drums', 'bass', 'other')),
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('spleeter:5stems', ('vocals', 'drums', 'bass', 'piano', 'other'))
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]
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@pytest.mark.parametrize('configuration, instruments', TEST_CONFIGURATIONS)
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def test_separate(configuration, instruments):
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""" Test separation from raw data. """
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adapter = get_default_audio_adapter()
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waveform, _ = adapter.load(TEST_AUDIO_DESCRIPTOR)
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separator = Separator(configuration)
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prediction = separator.separate(waveform)
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assert len(prediction) == len(instruments)
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for instrument in instruments:
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assert instrument in prediction
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for instrument in instruments:
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track = prediction[instrument]
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assert not (waveform == track).all()
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for compared in instruments:
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if instrument != compared:
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assert not (track == prediction[compared]).all()
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@pytest.mark.parametrize('configuration, instruments', TEST_CONFIGURATIONS)
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def test_separate_to_file(configuration, instruments):
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""" Test file based separation. """
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separator = Separator(configuration)
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with TemporaryDirectory() as directory:
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separator.separate_to_file(
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TEST_AUDIO_DESCRIPTOR,
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directory)
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for instrument in instruments:
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assert exists(join(
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directory,
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'{}/{}.wav'.format(TEST_AUDIO_BASENAME, instrument)))
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@pytest.mark.parametrize('configuration, instruments', TEST_CONFIGURATIONS)
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def test_filename_format(configuration, instruments):
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""" Test custom filename format. """
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separator = Separator(configuration)
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with TemporaryDirectory() as directory:
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separator.separate_to_file(
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TEST_AUDIO_DESCRIPTOR,
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directory,
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filename_format='export/{filename}/{instrument}.{codec}')
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for instrument in instruments:
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assert exists(join(
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directory,
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'export/{}/{}.wav'.format(TEST_AUDIO_BASENAME, instrument)))
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def test_filename_confilct():
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""" Test error handling with static pattern. """
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separator = Separator(TEST_CONFIGURATIONS[0][0])
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with TemporaryDirectory() as directory:
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with pytest.raises(SpleeterError):
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separator.separate_to_file(
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TEST_AUDIO_DESCRIPTOR,
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directory,
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filename_format='I wanna be your lover')
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