Files
beets/test/plugins/test_plugin_mediafield.py
2026-06-29 11:20:15 +02:00

114 lines
3.5 KiB
Python

"""Tests the facility that lets plugins add custom field to MediaFile."""
import os
import shutil
import mediafile
import pytest
from beets.library import Item
from beets.plugins import BeetsPlugin
from beets.test import _common
from beets.test.helper import BeetsTestCase
from beets.util import bytestring_path, syspath
field_extension = mediafile.MediaField(
mediafile.MP3DescStorageStyle("customtag"),
mediafile.MP4StorageStyle("----:com.apple.iTunes:customtag"),
mediafile.StorageStyle("customtag"),
mediafile.ASFStorageStyle("customtag"),
)
list_field_extension = mediafile.ListMediaField(
mediafile.MP3ListDescStorageStyle("customlisttag"),
mediafile.MP4ListStorageStyle("----:com.apple.iTunes:customlisttag"),
mediafile.ListStorageStyle("customlisttag"),
mediafile.ASFStorageStyle("customlisttag"),
)
class ExtendedFieldTestMixin(BeetsTestCase):
def _mediafile_fixture(self, name, extension="mp3"):
name = bytestring_path(f"{name}.{extension}")
src = os.path.join(_common.RSRC, name)
target = os.path.join(self.temp_dir, name)
shutil.copy(syspath(src), syspath(target))
return mediafile.MediaFile(target)
def test_extended_field_write(self):
plugin = BeetsPlugin()
plugin.add_media_field("customtag", field_extension)
try:
mf = self._mediafile_fixture("empty")
mf.customtag = "F#"
mf.save()
mf = mediafile.MediaFile(mf.path)
assert mf.customtag == "F#"
finally:
delattr(mediafile.MediaFile, "customtag")
Item._media_fields.remove("customtag")
def test_extended_list_field_write(self):
plugin = BeetsPlugin()
plugin.add_media_field("customlisttag", list_field_extension)
try:
mf = self._mediafile_fixture("empty")
mf.customlisttag = ["a", "b"]
mf.save()
mf = mediafile.MediaFile(mf.path)
assert mf.customlisttag == ["a", "b"]
finally:
delattr(mediafile.MediaFile, "customlisttag")
Item._media_fields.remove("customlisttag")
def test_write_extended_tag_from_item(self):
plugin = BeetsPlugin()
plugin.add_media_field("customtag", field_extension)
try:
mf = self._mediafile_fixture("empty")
assert mf.customtag is None
item = Item(path=mf.path, customtag="Gb")
item.write()
mf = mediafile.MediaFile(mf.path)
assert mf.customtag == "Gb"
finally:
delattr(mediafile.MediaFile, "customtag")
Item._media_fields.remove("customtag")
def test_read_flexible_attribute_from_file(self):
plugin = BeetsPlugin()
plugin.add_media_field("customtag", field_extension)
try:
mf = self._mediafile_fixture("empty")
mf.update({"customtag": "F#"})
mf.save()
item = Item.from_path(mf.path)
assert item["customtag"] == "F#"
finally:
delattr(mediafile.MediaFile, "customtag")
Item._media_fields.remove("customtag")
def test_invalid_descriptor(self):
with pytest.raises(
ValueError, match="must be an instance of MediaField"
):
mediafile.MediaFile.add_field("somekey", True)
def test_overwrite_property(self):
with pytest.raises(
ValueError, match='property "artist" already exists'
):
mediafile.MediaFile.add_field("artist", mediafile.MediaField())