# -*- coding: utf-8 -*- # This file is part of beets. # Copyright 2016, Adrian Sampson. # # Permission is hereby granted, free of charge, to any person obtaining # a copy of this software and associated documentation files (the # "Software"), to deal in the Software without restriction, including # without limitation the rights to use, copy, modify, merge, publish, # distribute, sublicense, and/or sell copies of the Software, and to # permit persons to whom the Software is furnished to do so, subject to # the following conditions: # # The above copyright notice and this permission notice shall be # included in all copies or substantial portions of the Software. """Automatically-generated blanket testing for the MediaFile metadata layer. """ from __future__ import division, absolute_import, print_function import os import shutil import datetime import time import unittest from six import assertCountEqual from test import _common from beets.mediafile import MediaFile, Image, \ ImageType, CoverArtField, UnreadableFileError class ArtTestMixin(object): """Test reads and writes of the ``art`` property. """ @property def png_data(self): if not self._png_data: image_file = os.path.join(_common.RSRC, b'image-2x3.png') with open(image_file, 'rb') as f: self._png_data = f.read() return self._png_data _png_data = None @property def jpg_data(self): if not self._jpg_data: image_file = os.path.join(_common.RSRC, b'image-2x3.jpg') with open(image_file, 'rb') as f: self._jpg_data = f.read() return self._jpg_data _jpg_data = None @property def tiff_data(self): if not self._jpg_data: image_file = os.path.join(_common.RSRC, b'image-2x3.tiff') with open(image_file, 'rb') as f: self._jpg_data = f.read() return self._jpg_data _jpg_data = None def test_set_png_art(self): mediafile = self._mediafile_fixture('empty') mediafile.art = self.png_data mediafile.save() mediafile = MediaFile(mediafile.path) self.assertEqual(mediafile.art, self.png_data) def test_set_jpg_art(self): mediafile = self._mediafile_fixture('empty') mediafile.art = self.jpg_data mediafile.save() mediafile = MediaFile(mediafile.path) self.assertEqual(mediafile.art, self.jpg_data) def test_delete_art(self): mediafile = self._mediafile_fixture('empty') mediafile.art = self.jpg_data mediafile.save() mediafile = MediaFile(mediafile.path) self.assertIsNotNone(mediafile.art) del mediafile.art mediafile.save() mediafile = MediaFile(mediafile.path) self.assertIsNone(mediafile.art) class ImageStructureTestMixin(ArtTestMixin): """Test reading and writing multiple image tags. The tests use the `image` media file fixture. The tags of these files include two images, on in the PNG format, the other in JPEG format. If the tag format supports it they also include additional metadata. """ def test_read_image_structures(self): mediafile = self._mediafile_fixture('image') self.assertEqual(len(mediafile.images), 2) image = next(i for i in mediafile.images if i.mime_type == 'image/png') self.assertEqual(image.data, self.png_data) self.assertExtendedImageAttributes(image, desc=u'album cover', type=ImageType.front) image = next(i for i in mediafile.images if i.mime_type == 'image/jpeg') self.assertEqual(image.data, self.jpg_data) self.assertExtendedImageAttributes(image, desc=u'the artist', type=ImageType.artist) def test_set_image_structure(self): mediafile = self._mediafile_fixture('empty') image = Image(data=self.png_data, desc=u'album cover', type=ImageType.front) mediafile.images = [image] mediafile.save() mediafile = MediaFile(mediafile.path) self.assertEqual(len(mediafile.images), 1) image = mediafile.images[0] self.assertEqual(image.data, self.png_data) self.assertEqual(image.mime_type, 'image/png') self.assertExtendedImageAttributes(image, desc=u'album cover', type=ImageType.front) def test_add_image_structure(self): mediafile = self._mediafile_fixture('image') self.assertEqual(len(mediafile.images), 2) image = Image(data=self.png_data, desc=u'the composer', type=ImageType.composer) mediafile.images += [image] mediafile.save() mediafile = MediaFile(mediafile.path) self.assertEqual(len(mediafile.images), 3) images = (i for i in mediafile.images if i.desc == u'the composer') image = next(images, None) self.assertExtendedImageAttributes( image, desc=u'the composer', type=ImageType.composer ) def test_delete_image_structures(self): mediafile = self._mediafile_fixture('image') self.assertEqual(len(mediafile.images), 2) del mediafile.images mediafile.save() mediafile = MediaFile(mediafile.path) self.assertEqual(len(mediafile.images), 0) def test_guess_cover(self): mediafile = self._mediafile_fixture('image') self.assertEqual(len(mediafile.images), 2) cover = CoverArtField.guess_cover_image(mediafile.images) self.assertEqual(cover.desc, u'album cover') self.assertEqual(mediafile.art, cover.data) def assertExtendedImageAttributes(self, image, **kwargs): # noqa """Ignore extended image attributes in the base tests. """ pass class ExtendedImageStructureTestMixin(ImageStructureTestMixin): """Checks for additional attributes in the image structure. Like the base `ImageStructureTestMixin`, per-format test classes should include this mixin to add image-related tests. """ def assertExtendedImageAttributes(self, image, desc=None, type=None): # noqa self.assertEqual(image.desc, desc) self.assertEqual(image.type, type) def test_add_tiff_image(self): mediafile = self._mediafile_fixture('image') self.assertEqual(len(mediafile.images), 2) image = Image(data=self.tiff_data, desc=u'the composer', type=ImageType.composer) mediafile.images += [image] mediafile.save() mediafile = MediaFile(mediafile.path) self.assertEqual(len(mediafile.images), 3) # WMA does not preserve the order, so we have to work around this image = list(filter(lambda i: i.mime_type == 'image/tiff', mediafile.images))[0] self.assertExtendedImageAttributes( image, desc=u'the composer', type=ImageType.composer) class LazySaveTestMixin(object): """Mediafile should only write changes when tags have changed """ @unittest.skip(u'not yet implemented') def test_unmodified(self): mediafile = self._mediafile_fixture('full') mtime = self._set_past_mtime(mediafile.path) self.assertEqual(os.stat(mediafile.path).st_mtime, mtime) mediafile.save() self.assertEqual(os.stat(mediafile.path).st_mtime, mtime) @unittest.skip(u'not yet implemented') def test_same_tag_value(self): mediafile = self._mediafile_fixture('full') mtime = self._set_past_mtime(mediafile.path) self.assertEqual(os.stat(mediafile.path).st_mtime, mtime) mediafile.title = mediafile.title mediafile.save() self.assertEqual(os.stat(mediafile.path).st_mtime, mtime) def test_update_same_tag_value(self): mediafile = self._mediafile_fixture('full') mtime = self._set_past_mtime(mediafile.path) self.assertEqual(os.stat(mediafile.path).st_mtime, mtime) mediafile.update({'title': mediafile.title}) mediafile.save() self.assertEqual(os.stat(mediafile.path).st_mtime, mtime) @unittest.skip(u'not yet implemented') def test_tag_value_change(self): mediafile = self._mediafile_fixture('full') mtime = self._set_past_mtime(mediafile.path) self.assertEqual(os.stat(mediafile.path).st_mtime, mtime) mediafile.title = mediafile.title mediafile.album = u'another' mediafile.save() self.assertNotEqual(os.stat(mediafile.path).st_mtime, mtime) def test_update_changed_tag_value(self): mediafile = self._mediafile_fixture('full') mtime = self._set_past_mtime(mediafile.path) self.assertEqual(os.stat(mediafile.path).st_mtime, mtime) mediafile.update({'title': mediafile.title, 'album': u'another'}) mediafile.save() self.assertNotEqual(os.stat(mediafile.path).st_mtime, mtime) def _set_past_mtime(self, path): mtime = round(time.time() - 10000) os.utime(path, (mtime, mtime)) return mtime class GenreListTestMixin(object): """Tests access to the ``genres`` property as a list. """ def test_read_genre_list(self): mediafile = self._mediafile_fixture('full') assertCountEqual(self, mediafile.genres, ['the genre']) def test_write_genre_list(self): mediafile = self._mediafile_fixture('empty') mediafile.genres = [u'one', u'two'] mediafile.save() mediafile = MediaFile(mediafile.path) assertCountEqual(self, mediafile.genres, [u'one', u'two']) def test_write_genre_list_get_first(self): mediafile = self._mediafile_fixture('empty') mediafile.genres = [u'one', u'two'] mediafile.save() mediafile = MediaFile(mediafile.path) self.assertEqual(mediafile.genre, u'one') def test_append_genre_list(self): mediafile = self._mediafile_fixture('full') self.assertEqual(mediafile.genre, u'the genre') mediafile.genres += [u'another'] mediafile.save() mediafile = MediaFile(mediafile.path) assertCountEqual(self, mediafile.genres, [u'the genre', u'another']) class ReadWriteTestBase(ArtTestMixin, GenreListTestMixin, _common.TempDirMixin): """Test writing and reading tags. Subclasses must set ``extension`` and ``audio_properties``. The basic tests for all audio formats encompass three files provided in our `rsrc` folder: `full.*`, `empty.*`, and `unparseable.*`. Respectively, they should contain a full slate of common fields listed in `full_initial_tags` below; no fields contents at all; and an unparseable release date field. To add support for a new file format to MediaFile, add these three files and then create a `ReadWriteTestBase` subclass by copying n' pasting one of the existing subclasses below. You will want to update the `format` field in that subclass, and you will probably need to fiddle with the `bitrate` and other format-specific fields. You can also add image tests (using an additional `image.*` fixture file) by including one of the image-related mixins. """ full_initial_tags = { 'title': u'full', 'artist': u'the artist', 'album': u'the album', 'genre': u'the genre', 'composer': u'the composer', 'grouping': u'the grouping', 'year': 2001, 'month': None, 'day': None, 'date': datetime.date(2001, 1, 1), 'track': 2, 'tracktotal': 3, 'disc': 4, 'disctotal': 5, 'lyrics': u'the lyrics', 'comments': u'the comments', 'bpm': 6, 'comp': True, 'mb_trackid': '8b882575-08a5-4452-a7a7-cbb8a1531f9e', 'mb_albumid': '9e873859-8aa4-4790-b985-5a953e8ef628', 'mb_artistid': '7cf0ea9d-86b9-4dad-ba9e-2355a64899ea', 'art': None, 'label': u'the label', } tag_fields = [ 'title', 'artist', 'album', 'genre', 'lyricist', 'composer', 'arranger', 'grouping', 'year', 'month', 'day', 'date', 'track', 'tracktotal', 'disc', 'disctotal', 'lyrics', 'comments', 'bpm', 'comp', 'mb_trackid', 'mb_albumid', 'mb_artistid', 'art', 'label', 'rg_track_peak', 'rg_track_gain', 'rg_album_peak', 'rg_album_gain', 'albumartist', 'mb_albumartistid', 'artist_sort', 'albumartist_sort', 'acoustid_fingerprint', 'acoustid_id', 'mb_releasegroupid', 'asin', 'catalognum', 'disctitle', 'script', 'language', 'country', 'albumstatus', 'media', 'albumdisambig', 'artist_credit', 'albumartist_credit', 'original_year', 'original_month', 'original_day', 'original_date', 'initial_key', ] def setUp(self): self.create_temp_dir() def tearDown(self): self.remove_temp_dir() def test_read_nonexisting(self): mediafile = self._mediafile_fixture('full') os.remove(mediafile.path) self.assertRaises(UnreadableFileError, MediaFile, mediafile.path) def test_save_nonexisting(self): mediafile = self._mediafile_fixture('full') os.remove(mediafile.path) try: mediafile.save() except UnreadableFileError: pass def test_delete_nonexisting(self): mediafile = self._mediafile_fixture('full') os.remove(mediafile.path) try: mediafile.delete() except UnreadableFileError: pass def test_read_audio_properties(self): mediafile = self._mediafile_fixture('full') for key, value in self.audio_properties.items(): if isinstance(value, float): self.assertAlmostEqual(getattr(mediafile, key), value, delta=0.1) else: self.assertEqual(getattr(mediafile, key), value) def test_read_full(self): mediafile = self._mediafile_fixture('full') self.assertTags(mediafile, self.full_initial_tags) def test_read_empty(self): mediafile = self._mediafile_fixture('empty') for field in self.tag_fields: self.assertIsNone(getattr(mediafile, field)) def test_write_empty(self): mediafile = self._mediafile_fixture('empty') tags = self._generate_tags() for key, value in tags.items(): setattr(mediafile, key, value) mediafile.save() mediafile = MediaFile(mediafile.path) self.assertTags(mediafile, tags) def test_update_empty(self): mediafile = self._mediafile_fixture('empty') tags = self._generate_tags() mediafile.update(tags) mediafile.save() mediafile = MediaFile(mediafile.path) self.assertTags(mediafile, tags) def test_overwrite_full(self): mediafile = self._mediafile_fixture('full') tags = self._generate_tags() for key, value in tags.items(): setattr(mediafile, key, value) mediafile.save() # Make sure the tags are already set when writing a second time for key, value in tags.items(): setattr(mediafile, key, value) mediafile.save() mediafile = MediaFile(mediafile.path) self.assertTags(mediafile, tags) def test_update_full(self): mediafile = self._mediafile_fixture('full') tags = self._generate_tags() mediafile.update(tags) mediafile.save() # Make sure the tags are already set when writing a second time mediafile.update(tags) mediafile.save() mediafile = MediaFile(mediafile.path) self.assertTags(mediafile, tags) def test_write_date_components(self): mediafile = self._mediafile_fixture('full') mediafile.year = 2001 mediafile.month = 1 mediafile.day = 2 mediafile.original_year = 1999 mediafile.original_month = 12 mediafile.original_day = 30 mediafile.save() mediafile = MediaFile(mediafile.path) self.assertEqual(mediafile.year, 2001) self.assertEqual(mediafile.month, 1) self.assertEqual(mediafile.day, 2) self.assertEqual(mediafile.date, datetime.date(2001, 1, 2)) self.assertEqual(mediafile.original_year, 1999) self.assertEqual(mediafile.original_month, 12) self.assertEqual(mediafile.original_day, 30) self.assertEqual(mediafile.original_date, datetime.date(1999, 12, 30)) def test_write_incomplete_date_components(self): mediafile = self._mediafile_fixture('empty') mediafile.year = 2001 mediafile.month = None mediafile.day = 2 mediafile.save() mediafile = MediaFile(mediafile.path) self.assertEqual(mediafile.year, 2001) self.assertIsNone(mediafile.month) self.assertIsNone(mediafile.day) self.assertEqual(mediafile.date, datetime.date(2001, 1, 1)) def test_write_dates(self): mediafile = self._mediafile_fixture('full') mediafile.date = datetime.date(2001, 1, 2) mediafile.original_date = datetime.date(1999, 12, 30) mediafile.save() mediafile = MediaFile(mediafile.path) self.assertEqual(mediafile.year, 2001) self.assertEqual(mediafile.month, 1) self.assertEqual(mediafile.day, 2) self.assertEqual(mediafile.date, datetime.date(2001, 1, 2)) self.assertEqual(mediafile.original_year, 1999) self.assertEqual(mediafile.original_month, 12) self.assertEqual(mediafile.original_day, 30) self.assertEqual(mediafile.original_date, datetime.date(1999, 12, 30)) def test_write_packed(self): mediafile = self._mediafile_fixture('empty') mediafile.tracktotal = 2 mediafile.track = 1 mediafile.save() mediafile = MediaFile(mediafile.path) self.assertEqual(mediafile.track, 1) self.assertEqual(mediafile.tracktotal, 2) def test_write_counters_without_total(self): mediafile = self._mediafile_fixture('full') self.assertEqual(mediafile.track, 2) self.assertEqual(mediafile.tracktotal, 3) self.assertEqual(mediafile.disc, 4) self.assertEqual(mediafile.disctotal, 5) mediafile.track = 10 delattr(mediafile, 'tracktotal') mediafile.disc = 10 delattr(mediafile, 'disctotal') mediafile.save() mediafile = MediaFile(mediafile.path) self.assertEqual(mediafile.track, 10) self.assertEqual(mediafile.tracktotal, None) self.assertEqual(mediafile.disc, 10) self.assertEqual(mediafile.disctotal, None) def test_unparseable_date(self): """The `unparseable.*` fixture should not crash but should return None for all parts of the release date. """ mediafile = self._mediafile_fixture('unparseable') self.assertIsNone(mediafile.date) self.assertIsNone(mediafile.year) self.assertIsNone(mediafile.month) self.assertIsNone(mediafile.day) def test_delete_tag(self): mediafile = self._mediafile_fixture('full') keys = self.full_initial_tags.keys() for key in set(keys) - set(['art', 'month', 'day']): self.assertIsNotNone(getattr(mediafile, key)) for key in keys: delattr(mediafile, key) mediafile.save() mediafile = MediaFile(mediafile.path) for key in keys: self.assertIsNone(getattr(mediafile, key)) def test_delete_packed_total(self): mediafile = self._mediafile_fixture('full') delattr(mediafile, 'tracktotal') delattr(mediafile, 'disctotal') mediafile.save() mediafile = MediaFile(mediafile.path) self.assertEqual(mediafile.track, self.full_initial_tags['track']) self.assertEqual(mediafile.disc, self.full_initial_tags['disc']) def test_delete_partial_date(self): mediafile = self._mediafile_fixture('empty') mediafile.date = datetime.date(2001, 12, 3) mediafile.save() mediafile = MediaFile(mediafile.path) self.assertIsNotNone(mediafile.date) self.assertIsNotNone(mediafile.year) self.assertIsNotNone(mediafile.month) self.assertIsNotNone(mediafile.day) delattr(mediafile, 'month') mediafile.save() mediafile = MediaFile(mediafile.path) self.assertIsNotNone(mediafile.date) self.assertIsNotNone(mediafile.year) self.assertIsNone(mediafile.month) self.assertIsNone(mediafile.day) def test_delete_year(self): mediafile = self._mediafile_fixture('full') self.assertIsNotNone(mediafile.date) self.assertIsNotNone(mediafile.year) delattr(mediafile, 'year') mediafile.save() mediafile = MediaFile(mediafile.path) self.assertIsNone(mediafile.date) self.assertIsNone(mediafile.year) def assertTags(self, mediafile, tags): # noqa errors = [] for key, value in tags.items(): try: value2 = getattr(mediafile, key) except AttributeError: errors.append(u'Tag %s does not exist' % key) else: if value2 != value: errors.append(u'Tag %s: %r != %r' % (key, value2, value)) if any(errors): errors = [u'Tags did not match'] + errors self.fail('\n '.join(errors)) def _mediafile_fixture(self, name): name = name + '.' + self.extension if not isinstance(name, bytes): name = name.encode('utf8') src = os.path.join(_common.RSRC, name) target = os.path.join(self.temp_dir, name) shutil.copy(src, target) return MediaFile(target) def _generate_tags(self, base=None): """Return dictionary of tags, mapping tag names to values. """ tags = {} for key in self.tag_fields: if key.startswith('rg_'): # ReplayGain is float tags[key] = 1.0 else: tags[key] = 'value\u2010%s' % key for key in ['disc', 'disctotal', 'track', 'tracktotal', 'bpm']: tags[key] = 1 tags['art'] = self.jpg_data tags['comp'] = True date = datetime.date(2001, 4, 3) tags['date'] = date tags['year'] = date.year tags['month'] = date.month tags['day'] = date.day original_date = datetime.date(1999, 5, 6) tags['original_date'] = original_date tags['original_year'] = original_date.year tags['original_month'] = original_date.month tags['original_day'] = original_date.day return tags class PartialTestMixin(object): tags_without_total = { 'track': 2, 'tracktotal': 0, 'disc': 4, 'disctotal': 0, } def test_read_track_without_total(self): mediafile = self._mediafile_fixture('partial') self.assertEqual(mediafile.track, 2) self.assertIsNone(mediafile.tracktotal) self.assertEqual(mediafile.disc, 4) self.assertIsNone(mediafile.disctotal) class MP3Test(ReadWriteTestBase, PartialTestMixin, ExtendedImageStructureTestMixin, unittest.TestCase): extension = 'mp3' audio_properties = { 'length': 1.0, 'bitrate': 80000, 'format': 'MP3', 'samplerate': 44100, 'bitdepth': 0, 'channels': 1, } def test_unknown_apic_type(self): mediafile = self._mediafile_fixture('image_unknown_type') self.assertEqual(mediafile.images[0].type, ImageType.other) class MP4Test(ReadWriteTestBase, PartialTestMixin, ImageStructureTestMixin, unittest.TestCase): extension = 'm4a' audio_properties = { 'length': 1.0, 'bitrate': 64000, 'format': 'AAC', 'samplerate': 44100, 'bitdepth': 16, 'channels': 2, } def test_add_tiff_image_fails(self): mediafile = self._mediafile_fixture('empty') with self.assertRaises(ValueError): mediafile.images = [Image(data=self.tiff_data)] def test_guess_cover(self): # There is no metadata associated with images, we pick one at random pass class AlacTest(ReadWriteTestBase, unittest.TestCase): extension = 'alac.m4a' audio_properties = { 'length': 1.0, 'bitrate': 21830, # 'format': 'ALAC', 'samplerate': 44100, 'bitdepth': 16, 'channels': 1, } class MusepackTest(ReadWriteTestBase, unittest.TestCase): extension = 'mpc' audio_properties = { 'length': 1.0, 'bitrate': 23458, 'format': u'Musepack', 'samplerate': 44100, 'bitdepth': 0, 'channels': 2, } class WMATest(ReadWriteTestBase, ExtendedImageStructureTestMixin, unittest.TestCase): extension = 'wma' audio_properties = { 'length': 1.0, 'bitrate': 128000, 'format': u'Windows Media', 'samplerate': 44100, 'bitdepth': 0, 'channels': 1, } def test_write_genre_list_get_first(self): # WMA does not preserve list order mediafile = self._mediafile_fixture('empty') mediafile.genres = [u'one', u'two'] mediafile.save() mediafile = MediaFile(mediafile.path) self.assertIn(mediafile.genre, [u'one', u'two']) def test_read_pure_tags(self): mediafile = self._mediafile_fixture('pure') self.assertEqual(mediafile.comments, u'the comments') self.assertEqual(mediafile.title, u'the title') self.assertEqual(mediafile.artist, u'the artist') class OggTest(ReadWriteTestBase, ExtendedImageStructureTestMixin, unittest.TestCase): extension = 'ogg' audio_properties = { 'length': 1.0, 'bitrate': 48000, 'format': u'OGG', 'samplerate': 44100, 'bitdepth': 0, 'channels': 1, } def test_read_date_from_year_tag(self): mediafile = self._mediafile_fixture('year') self.assertEqual(mediafile.year, 2000) self.assertEqual(mediafile.date, datetime.date(2000, 1, 1)) def test_write_date_to_year_tag(self): mediafile = self._mediafile_fixture('empty') mediafile.year = 2000 mediafile.save() mediafile = MediaFile(mediafile.path) self.assertEqual(mediafile.mgfile['YEAR'], [u'2000']) def test_legacy_coverart_tag(self): mediafile = self._mediafile_fixture('coverart') self.assertTrue('coverart' in mediafile.mgfile) self.assertEqual(mediafile.art, self.png_data) mediafile.art = self.png_data mediafile.save() mediafile = MediaFile(mediafile.path) self.assertFalse('coverart' in mediafile.mgfile) def test_date_tag_with_slashes(self): mediafile = self._mediafile_fixture('date_with_slashes') self.assertEqual(mediafile.year, 2005) self.assertEqual(mediafile.month, 6) self.assertEqual(mediafile.day, 5) class FlacTest(ReadWriteTestBase, PartialTestMixin, ExtendedImageStructureTestMixin, unittest.TestCase): extension = 'flac' audio_properties = { 'length': 1.0, 'bitrate': 108688, 'format': u'FLAC', 'samplerate': 44100, 'bitdepth': 16, 'channels': 1, } class ApeTest(ReadWriteTestBase, ExtendedImageStructureTestMixin, unittest.TestCase): extension = 'ape' audio_properties = { 'length': 1.0, 'bitrate': 112040, 'format': u'APE', 'samplerate': 44100, 'bitdepth': 16, 'channels': 1, } class WavpackTest(ReadWriteTestBase, unittest.TestCase): extension = 'wv' audio_properties = { 'length': 1.0, 'bitrate': 108744, 'format': u'WavPack', 'samplerate': 44100, 'bitdepth': 0, 'channels': 1, } class OpusTest(ReadWriteTestBase, unittest.TestCase): extension = 'opus' audio_properties = { 'length': 1.0, 'bitrate': 57984, 'format': u'Opus', 'samplerate': 48000, 'bitdepth': 0, 'channels': 1, } class AIFFTest(ReadWriteTestBase, unittest.TestCase): extension = 'aiff' audio_properties = { 'length': 1.0, 'bitrate': 705600, 'format': u'AIFF', 'samplerate': 44100, 'bitdepth': 0, 'channels': 1, } # Check whether we have a Mutagen version with DSF support. We can # remove this once we require a version that includes the feature. try: import mutagen.dsf # noqa except: HAVE_DSF = False else: HAVE_DSF = True @unittest.skipIf(not HAVE_DSF, "Mutagen does not have DSF support") class DSFTest(ReadWriteTestBase, unittest.TestCase): extension = 'dsf' audio_properties = { 'length': 0.01, 'bitrate': 11289600, 'format': u'DSD Stream File', 'samplerate': 5644800, 'bitdepth': 1, 'channels': 2, } class MediaFieldTest(unittest.TestCase): def test_properties_from_fields(self): path = os.path.join(_common.RSRC, b'full.mp3') mediafile = MediaFile(path) for field in MediaFile.fields(): self.assertTrue(hasattr(mediafile, field)) def test_properties_from_readable_fields(self): path = os.path.join(_common.RSRC, b'full.mp3') mediafile = MediaFile(path) for field in MediaFile.readable_fields(): self.assertTrue(hasattr(mediafile, field)) def test_known_fields(self): fields = list(ReadWriteTestBase.tag_fields) fields.extend(('encoder', 'images', 'genres', 'albumtype')) assertCountEqual(self, MediaFile.fields(), fields) def test_fields_in_readable_fields(self): readable = MediaFile.readable_fields() for field in MediaFile.fields(): self.assertIn(field, readable) def suite(): return unittest.TestLoader().loadTestsFromName(__name__) if __name__ == '__main__': unittest.main(defaultTest='suite')