# This file is part of beets. # Copyright 2016, Fabrice Laporte. # # 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. """Tests for the 'lastgenre' plugin.""" from unittest.mock import Mock from beets import config from beets.test import _common from beets.test.helper import BeetsTestCase from beetsplug import lastgenre class LastGenrePluginTest(BeetsTestCase): def setUp(self): super().setUp() self.plugin = lastgenre.LastGenrePlugin() def _setup_config( self, whitelist=False, canonical=False, count=1, prefer_specific=False ): config["lastgenre"]["canonical"] = canonical config["lastgenre"]["count"] = count config["lastgenre"]["prefer_specific"] = prefer_specific if isinstance(whitelist, (bool, (str,))): # Filename, default, or disabled. config["lastgenre"]["whitelist"] = whitelist self.plugin.setup() if not isinstance(whitelist, (bool, (str,))): # Explicit list of genres. self.plugin.whitelist = whitelist def test_default(self): """Fetch genres with whitelist and c14n deactivated""" self._setup_config() assert self.plugin._resolve_genres(["delta blues"]) == "Delta Blues" def test_c14n_only(self): """Default c14n tree funnels up to most common genre except for *wrong* genres that stay unchanged. """ self._setup_config(canonical=True, count=99) assert self.plugin._resolve_genres(["delta blues"]) == "Blues" assert self.plugin._resolve_genres(["iota blues"]) == "Iota Blues" def test_whitelist_only(self): """Default whitelist rejects *wrong* (non existing) genres.""" self._setup_config(whitelist=True) assert self.plugin._resolve_genres(["iota blues"]) == "" def test_whitelist_c14n(self): """Default whitelist and c14n both activated result in all parents genres being selected (from specific to common). """ self._setup_config(canonical=True, whitelist=True, count=99) assert ( self.plugin._resolve_genres(["delta blues"]) == "Delta Blues, Blues" ) def test_whitelist_custom(self): """Keep only genres that are in the whitelist.""" self._setup_config(whitelist={"blues", "rock", "jazz"}, count=2) assert self.plugin._resolve_genres(["pop", "blues"]) == "Blues" self._setup_config(canonical="", whitelist={"rock"}) assert self.plugin._resolve_genres(["delta blues"]) == "" def test_count(self): """Keep the n first genres, as we expect them to be sorted from more to less popular. """ self._setup_config(whitelist={"blues", "rock", "jazz"}, count=2) assert ( self.plugin._resolve_genres(["jazz", "pop", "rock", "blues"]) == "Jazz, Rock" ) def test_count_c14n(self): """Keep the n first genres, after having applied c14n when necessary""" self._setup_config( whitelist={"blues", "rock", "jazz"}, canonical=True, count=2 ) # thanks to c14n, 'blues' superseeds 'country blues' and takes the # second slot assert ( self.plugin._resolve_genres( ["jazz", "pop", "country blues", "rock"] ) == "Jazz, Blues" ) def test_c14n_whitelist(self): """Genres first pass through c14n and are then filtered""" self._setup_config(canonical=True, whitelist={"rock"}) assert self.plugin._resolve_genres(["delta blues"]) == "" def test_empty_string_enables_canonical(self): """For backwards compatibility, setting the `canonical` option to the empty string enables it using the default tree. """ self._setup_config(canonical="", count=99) assert self.plugin._resolve_genres(["delta blues"]) == "Blues" def test_empty_string_enables_whitelist(self): """Again for backwards compatibility, setting the `whitelist` option to the empty string enables the default set of genres. """ self._setup_config(whitelist="") assert self.plugin._resolve_genres(["iota blues"]) == "" def test_prefer_specific_loads_tree(self): """When prefer_specific is enabled but canonical is not the tree still has to be loaded. """ self._setup_config(prefer_specific=True, canonical=False) assert self.plugin.c14n_branches != [] def test_prefer_specific_without_canonical(self): """Prefer_specific works without canonical.""" self._setup_config(prefer_specific=True, canonical=False, count=4) assert ( self.plugin._resolve_genres(["math rock", "post-rock"]) == "Post-Rock, Math Rock" ) def test_no_duplicate(self): """Remove duplicated genres.""" self._setup_config(count=99) assert self.plugin._resolve_genres(["blues", "blues"]) == "Blues" def test_tags_for(self): class MockPylastElem: def __init__(self, name): self.name = name def get_name(self): return self.name class MockPylastObj: def get_top_tags(self): tag1 = Mock() tag1.weight = 90 tag1.item = MockPylastElem("Pop") tag2 = Mock() tag2.weight = 40 tag2.item = MockPylastElem("Rap") return [tag1, tag2] plugin = lastgenre.LastGenrePlugin() res = plugin._tags_for(MockPylastObj()) assert res == ["pop", "rap"] res = plugin._tags_for(MockPylastObj(), min_weight=50) assert res == ["pop"] def test_get_genre(self): mock_genres = {"track": "1", "album": "2", "artist": "3"} def mock_fetch_track_genre(self, obj=None): return mock_genres["track"] def mock_fetch_album_genre(self, obj): return mock_genres["album"] def mock_fetch_artist_genre(self, obj): return mock_genres["artist"] lastgenre.LastGenrePlugin.fetch_track_genre = mock_fetch_track_genre lastgenre.LastGenrePlugin.fetch_album_genre = mock_fetch_album_genre lastgenre.LastGenrePlugin.fetch_artist_genre = mock_fetch_artist_genre self._setup_config(whitelist=False) item = _common.item() item.genre = mock_genres["track"] config["lastgenre"] = {"force": False} res = self.plugin._get_genre(item) assert res == (item.genre, "keep") config["lastgenre"] = {"force": True, "source": "track"} res = self.plugin._get_genre(item) assert res == (mock_genres["track"], "track") config["lastgenre"] = {"source": "album"} res = self.plugin._get_genre(item) assert res == (mock_genres["album"], "album") config["lastgenre"] = {"source": "artist"} res = self.plugin._get_genre(item) assert res == (mock_genres["artist"], "artist") mock_genres["artist"] = None res = self.plugin._get_genre(item) assert res == (item.genre, "original") config["lastgenre"] = {"fallback": "rap"} item.genre = None res = self.plugin._get_genre(item) assert res == (config["lastgenre"]["fallback"].get(), "fallback") def test_sort_by_depth(self): self._setup_config(canonical=True) # Normal case. tags = ("electronic", "ambient", "post-rock", "downtempo") res = self.plugin._sort_by_depth(tags) assert res == ["post-rock", "downtempo", "ambient", "electronic"] # Non-canonical tag ('chillout') present. tags = ("electronic", "ambient", "chillout") res = self.plugin._sort_by_depth(tags) assert res == ["ambient", "electronic"]