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test_tagdiff.py
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# -*- coding: utf-8 -*-
#
# Picard, the next-generation MusicBrainz tagger
#
# Copyright (C) 2025 Laurent Monin
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
from test.picardtestcase import PicardTestCase
from picard.ui.metadatabox.tagdiff import (
TagCounter,
TagDiff,
TagStatus,
)
class TestTagCounter(PicardTestCase):
def setUp(self):
super().setUp()
self.parent = TagDiff()
self.parent.objects = 3
self.counter = TagCounter(self.parent)
def test_add_new_tag(self):
self.counter.add("artist", ["Artist 1"])
self.assertEqual(self.counter["artist"], ["Artist 1"])
self.assertEqual(self.counter.counts["artist"], 1)
self.assertNotIn("artist", self.counter.different)
def test_add_same_tag_multiple_times(self):
self.counter.add("artist", ["Artist 1"])
self.counter.add("artist", ["Artist 1"])
self.assertEqual(self.counter["artist"], ["Artist 1"])
self.assertEqual(self.counter.counts["artist"], 2)
self.assertNotIn("artist", self.counter.different)
def test_add_different_tag_value(self):
self.counter.add("artist", ["Artist 1"])
self.counter.add("artist", ["Artist 2"])
self.assertEqual(self.counter["artist"], [""])
self.assertEqual(self.counter.counts["artist"], 2)
self.assertIn("artist", self.counter.different)
def test_get_missing_tag(self):
self.assertEqual(self.counter["missing"], [""])
def test_status_different(self):
self.parent.objects = 2
self.counter.add("artist", ["Artist 1"])
self.counter.add("artist", ["Artist 2"])
status = self.counter.status("artist")
self.assertEqual(status.count, 2)
self.assertTrue(status.is_different)
self.assertEqual(status.missing, 0)
self.assertTrue(status.is_grouped)
def test_status_same(self):
self.parent.objects = 2
self.counter.add("artist", ["Artist 1"])
self.counter.add("artist", ["Artist 1"])
status = self.counter.status("artist")
self.assertEqual(status.count, 2)
self.assertFalse(status.is_different)
self.assertEqual(status.missing, 0)
self.assertFalse(status.is_grouped)
def test_status_missing_and_different(self):
self.parent.objects = 3
self.counter.add("artist", ["Artist 1"])
self.counter.add("artist", ["Artist 2"])
status = self.counter.status("artist")
self.assertEqual(status.count, 2)
self.assertTrue(status.is_different)
self.assertEqual(status.missing, 1)
self.assertTrue(status.is_grouped)
def test_display_value_different(self):
self.counter.add("artist", ["Artist 1"])
self.counter.add("artist", ["Artist 2"])
display_value = self.counter.display_value("artist")
self.assertEqual(display_value.text, "(different across 2 items)")
self.assertTrue(display_value.is_grouped)
def test_display_value_same(self):
self.counter.add("artist", ["Artist 1"])
self.counter.add("artist", ["Artist 1"])
display_value = self.counter.display_value("artist")
self.assertEqual(display_value.text, "Artist 1 (missing from 1 item)")
self.assertTrue(display_value.is_grouped)
def test_display_value_missing(self):
self.counter.add("artist", ["Artist 1"])
display_value = self.counter.display_value("artist")
self.assertEqual(display_value.text, "Artist 1 (missing from 2 items)")
self.assertTrue(display_value.is_grouped)
def test_display_value_length(self):
self.counter.add("~length", 60000)
display_value = self.counter.display_value("~length")
self.assertEqual(display_value.text, "1:00 (missing from 2 items)")
self.assertTrue(display_value.is_grouped)
def test_display_value_length_missing(self):
self.counter.add("~length", "60000")
self.parent.objects = 5
display_value = self.counter.display_value("~length")
self.assertEqual(display_value.text, "1:00 (missing from 4 items)")
self.assertTrue(display_value.is_grouped)
def test_display_value_nothing(self):
self.counter.add("artist", ["Artist 1"])
self.parent.objects = 0
display_value = self.counter.display_value("artist")
self.assertEqual(display_value.text, "Artist 1")
self.assertFalse(display_value.is_grouped)
class TestTagDiff(PicardTestCase):
def setUp(self):
super().setUp()
self.tag_diff = TagDiff()
self.tag_diff.objects = 3
def test_add_new_tag(self):
self.tag_diff.add("artist", new=["Artist 1"])
self.assertEqual(self.tag_diff.tag_status("artist"), TagStatus.ADDED)
self.assertEqual(self.tag_diff.new["artist"], ["Artist 1"])
self.assertIsNone(self.tag_diff.old.get("artist"))
def test_add_removed_tag(self):
self.tag_diff.add("artist", old=["Artist 1"])
self.assertEqual(self.tag_diff.tag_status("artist"), TagStatus.REMOVED)
self.assertEqual(self.tag_diff.old["artist"], ["Artist 1"])
self.assertIsNone(self.tag_diff.new.get("artist"))
def test_add_removed_removed_tag(self):
self.tag_diff.add("artist", old=["Artist 1"], removed=True)
self.assertEqual(self.tag_diff.tag_status("artist"), TagStatus.REMOVED)
self.assertEqual(self.tag_diff.old["artist"], ["Artist 1"])
self.assertIsNone(self.tag_diff.new.get("artist"))
def test_add_changed_tag(self):
self.tag_diff.add("artist", old=["Artist 1"], new=["Artist 2"])
self.assertEqual(self.tag_diff.tag_status("artist"), TagStatus.CHANGED)
self.assertEqual(self.tag_diff.old["artist"], ["Artist 1"])
self.assertEqual(self.tag_diff.new["artist"], ["Artist 2"])
def test_add_changed_tag_multistep(self):
self.tag_diff.add("artist", old=["Artist 1"])
self.tag_diff.add("artist", new=["Artist 2"])
self.assertEqual(self.tag_diff.tag_status("artist"), TagStatus.CHANGED)
self.assertEqual(self.tag_diff.old["artist"], ["Artist 1"])
self.assertEqual(self.tag_diff.new["artist"], ["Artist 2"])
def test_add_changed_tag_multistep_reversed(self):
self.tag_diff.add("artist", new=["Artist 2"])
self.tag_diff.add("artist", old=["Artist 1"])
self.assertEqual(self.tag_diff.tag_status("artist"), TagStatus.CHANGED)
self.assertEqual(self.tag_diff.old["artist"], ["Artist 1"])
self.assertEqual(self.tag_diff.new["artist"], ["Artist 2"])
def test_add_nochange_tag(self):
self.tag_diff.add("artist", old=["Artist 1"], new=["Artist 1"])
self.assertEqual(self.tag_diff.tag_status("artist"), TagStatus.UNCHANGED)
self.assertEqual(self.tag_diff.old["artist"], ["Artist 1"])
self.assertEqual(self.tag_diff.new["artist"], ["Artist 1"])
def test_add_nochange_no_values(self):
self.tag_diff.add("artist")
self.assertEqual(self.tag_diff.tag_status("artist"), TagStatus.EMPTY)
def test_add_nochange_no_values_top(self):
self.tag_diff.add("artist", top_tags={"artist"})
self.assertEqual(self.tag_diff.tag_status("artist"), TagStatus.UNCHANGED)
def test_add_length_changed_2s(self):
self.tag_diff = TagDiff(max_length_diff=2)
self.tag_diff.objects = 3
self.tag_diff.add("~length", old="10000", new="15000")
self.assertEqual(self.tag_diff.tag_status("~length"), TagStatus.CHANGED)
self.assertEqual(self.tag_diff.old["~length"], "10000")
self.assertEqual(self.tag_diff.new["~length"], "15000")
def test_add_length_no_changed_2s(self):
self.tag_diff = TagDiff(max_length_diff=2)
self.tag_diff.objects = 3
self.tag_diff.add("~length", old="10000", new="12000")
self.assertEqual(self.tag_diff.tag_status("~length"), TagStatus.UNCHANGED)
self.assertEqual(self.tag_diff.old["~length"], "10000")
self.assertEqual(self.tag_diff.new["~length"], "12000")
def test_add_length_no_changed_1s(self):
self.tag_diff = TagDiff(max_length_diff=1)
self.tag_diff.objects = 3
self.tag_diff.add("~length", old="10000", new="12000")
self.assertEqual(self.tag_diff.tag_status("~length"), TagStatus.CHANGED)
self.assertEqual(self.tag_diff.old["~length"], "10000")
self.assertEqual(self.tag_diff.new["~length"], "12000")
def test_is_readonly(self):
self.tag_diff.add("artist", old=["Artist 1"], new=["Artist 2"], readonly=True)
self.assertTrue(self.tag_diff.is_readonly("artist"))
self.assertFalse(self.tag_diff.is_readonly("unknown"))
def test_add_not_removable(self):
self.tag_diff.add("artist", old=["Artist 1"], new=["Artist 2"], removable=False)
self.assertEqual(self.tag_diff.status["artist"], TagStatus.CHANGED | TagStatus.NOTREMOVABLE)
def test_update_tag_names(self):
self.tag_diff.add("title", old=["Title 1"], new=["Title 2"])
self.tag_diff.add("artist", new=["Artist 2"])
self.tag_diff.add("album", old=["Album 1"])
self.tag_diff.update_tag_names()
self.assertEqual(self.tag_diff.tag_names, ["album", "artist", "title"])
def test_update_tag_names_top_tags(self):
self.tag_diff.add("title", old=["Title 1"], new=["Title 2"])
self.tag_diff.add("artist", new=["Artist 2"])
self.tag_diff.add("album", old=["Album 1"])
self.tag_diff.update_tag_names(top_tags={"title"})
self.assertEqual(self.tag_diff.tag_names, ["title", "album", "artist"])
def test_update_tag_names_changes_first(self):
self.tag_diff.add("title", old=["Title 1"], new=["Title 2"])
self.tag_diff.add("artist", old=["Artist 2"])
self.tag_diff.add("album", old=["Album 1"])
self.tag_diff.update_tag_names(changes_first=True)
self.assertEqual(self.tag_diff.tag_names, ["title", "album", "artist"])
def test_update_tag_names_top_tags_changed(self):
self.tag_diff.add("title", old=["Title 1"], new=["Title 2"])
self.tag_diff.add("artist", new=["Artist 2"])
self.tag_diff.add("album", old=["Album 1"])
self.tag_diff.update_tag_names(changes_first=True, top_tags={"title"})
self.assertEqual(self.tag_diff.tag_names, ["title", "artist", "album"])
@staticmethod
def _special_handler(old, new):
for old_value, new_value in zip(old, new):
try:
if abs(int(old_value) - int(new_value)) > 2000:
return True
except (ValueError, TypeError):
return True
return False
def test_special_handler_changed(self):
self.tag_diff = TagDiff()
self.tag_diff.objects = 2
self.tag_diff.tag_ne_handlers['~length_list'] = self._special_handler
self.tag_diff.add("~length_list", old=["10000", "12000"], new=["11000", "14500"])
self.assertEqual(self.tag_diff.tag_status("~length_list"), TagStatus.CHANGED)
def test_special_handler_unchanged(self):
self.tag_diff = TagDiff()
self.tag_diff.objects = 2
self.tag_diff.tag_ne_handlers['~length_list'] = self._special_handler
self.tag_diff.add("~length_list", old=["10000", "12000"], new=["11000", "13500"])
self.assertEqual(self.tag_diff.tag_status("~length_list"), TagStatus.UNCHANGED)
def test_unchanged_tag_to_json(self):
self.tag_diff.add("artist", ["Artist 1"])
self.tag_diff.update_tag_names()
tags = self.tag_diff.to_json()
self.assertEqual(tags, '{"artist": {"old": ["Artist 1"]}}')
def test_new_tag_to_json(self):
self.tag_diff.add("artist", new=["Artist 1"])
self.tag_diff.update_tag_names()
tags = self.tag_diff.to_json()
self.assertEqual(tags, '{"artist": {"new": ["Artist 1"]}}')
def test_modified_tag_to_json(self):
self.tag_diff.add("artist", ["Artist 1"], ["Artist 2"])
self.tag_diff.update_tag_names()
tags = self.tag_diff.to_json()
self.assertEqual(tags, '{"artist": {"old": ["Artist 1"], "new": ["Artist 2"]}}')
def test_multiple_tags_to_json(self):
self.tag_diff.add("artist", ["Artist 1"], ["Artist 2"])
self.tag_diff.add("album", ["Album 1"], ["Album 2"])
self.tag_diff.update_tag_names()
tags = self.tag_diff.to_json()
self.assertEqual(tags, '{"album": {"old": ["Album 1"], "new": ["Album 2"]}, "artist": {"old": ["Artist 1"], "new": ["Artist 2"]}}')
def test_unchanged_tag_to_tsv(self):
self.tag_diff.add("artist", ["Artist 1"])
self.tag_diff.update_tag_names()
tags = self.tag_diff.to_tsv()
self.assertEqual(tags, 'artist\tArtist 1\t\r\n')
def test_tabbed_tag_to_tsv(self):
self.tag_diff.add("artist", ["Artist\t1"])
self.tag_diff.update_tag_names()
tags = self.tag_diff.to_tsv()
self.assertEqual(tags, 'artist\t"Artist\t1"\t\r\n')
def test_newline_tag_to_tsv(self):
self.tag_diff.add("album", ["Artist\n1"])
self.tag_diff.add("genre", ["Genre\r\n1"])
self.tag_diff.update_tag_names()
tags = self.tag_diff.to_tsv()
self.assertEqual(tags, 'album\t"Artist\n1"\t\r\ngenre\t"Genre\r\n1"\t\r\n')
def test_quoted_tag_to_tsv(self):
self.tag_diff.add("trackname", ['This "track" is cool'])
self.tag_diff.update_tag_names()
tags = self.tag_diff.to_tsv()
self.assertEqual(tags, 'trackname\t"This ""track"" is cool"\t\r\n')
def test_new_tag_to_tsv(self):
self.tag_diff.add("artist", new=["Artist 1"])
self.tag_diff.update_tag_names()
tags = self.tag_diff.to_tsv()
self.assertEqual(tags, 'artist\t\tArtist 1\r\n')
def test_modified_tag_to_tsv(self):
self.tag_diff.add("artist", ["Artist 1"], ["Artist 2"])
self.tag_diff.update_tag_names()
tags = self.tag_diff.to_tsv()
self.assertEqual(tags, 'artist\tArtist 1\tArtist 2\r\n')
def test_multiple_tags_to_tsv(self):
self.tag_diff.add("artist", ["Artist 1"], ["Artist 2"])
self.tag_diff.add("album", ["Album 1"], ["Album 2"])
self.tag_diff.update_tag_names()
tags = self.tag_diff.to_tsv()
self.assertEqual(tags, 'album\tAlbum 1\tAlbum 2\r\nartist\tArtist 1\tArtist 2\r\n')
def test_old_length_tag_to_tsv(self):
self.tag_diff.add("~length", "10000")
self.tag_diff.update_tag_names()
tags = self.tag_diff.to_tsv()
self.assertEqual(tags, '~length\t0:10\t\r\n')
def test_new_length_tag_to_tsv(self):
self.tag_diff.add("~length", new="10000")
self.tag_diff.update_tag_names()
tags = self.tag_diff.to_tsv()
self.assertEqual(tags, '~length\t\t0:10\r\n')
def test_length_tag_to_pretty_tsv(self):
self.tag_diff.add("~length", "10000", "20000")
self.tag_diff.update_tag_names()
tags = self.tag_diff.to_tsv(prettify_times=False)
self.assertEqual(tags, '~length\t10000\t20000\r\n')