-
Notifications
You must be signed in to change notification settings - Fork 1.8k
/
helper.py
607 lines (493 loc) · 19.5 KB
/
helper.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
# This file is part of beets.
# Copyright 2016, Thomas Scholtes.
#
# 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.
"""This module includes various helpers that provide fixtures, capture
information or mock the environment.
- The `control_stdin` and `capture_stdout` context managers allow one to
interact with the user interface.
- `has_program` checks the presence of a command on the system.
- The `generate_album_info` and `generate_track_info` functions return
fixtures to be used when mocking the autotagger.
- The `ImportSessionFixture` allows one to run importer code while
controlling the interactions through code.
- The `TestHelper` class encapsulates various fixtures that can be set up.
"""
import sys
import os
import os.path
import shutil
import subprocess
from tempfile import mkdtemp, mkstemp
from contextlib import contextmanager
from io import StringIO
from enum import Enum
import beets
from beets import logging
from beets import config
import beets.plugins
from beets.library import Library, Item, Album
from beets import importer
from beets.autotag.hooks import AlbumInfo, TrackInfo
from mediafile import MediaFile, Image
from beets import util
from beets.util import MoveOperation
# TODO Move AutotagMock here
from test import _common
class LogCapture(logging.Handler):
def __init__(self):
logging.Handler.__init__(self)
self.messages = []
def emit(self, record):
self.messages.append(str(record.msg))
@contextmanager
def capture_log(logger='beets'):
capture = LogCapture()
log = logging.getLogger(logger)
log.addHandler(capture)
try:
yield capture.messages
finally:
log.removeHandler(capture)
@contextmanager
def control_stdin(input=None):
"""Sends ``input`` to stdin.
>>> with control_stdin('yes'):
... input()
'yes'
"""
org = sys.stdin
sys.stdin = StringIO(input)
try:
yield sys.stdin
finally:
sys.stdin = org
@contextmanager
def capture_stdout():
"""Save stdout in a StringIO.
>>> with capture_stdout() as output:
... print('spam')
...
>>> output.getvalue()
'spam'
"""
org = sys.stdout
sys.stdout = capture = StringIO()
try:
yield sys.stdout
finally:
sys.stdout = org
print(capture.getvalue())
def _convert_args(args):
"""Convert args to bytestrings for Python 2 and convert them to strings
on Python 3.
"""
for i, elem in enumerate(args):
if isinstance(elem, bytes):
args[i] = elem.decode(util.arg_encoding())
return args
def has_program(cmd, args=['--version']):
"""Returns `True` if `cmd` can be executed.
"""
full_cmd = _convert_args([cmd] + args)
try:
with open(os.devnull, 'wb') as devnull:
subprocess.check_call(full_cmd, stderr=devnull,
stdout=devnull, stdin=devnull)
except OSError:
return False
except subprocess.CalledProcessError:
return False
else:
return True
class TestHelper:
"""Helper mixin for high-level cli and plugin tests.
This mixin provides methods to isolate beets' global state provide
fixtures.
"""
# TODO automate teardown through hook registration
def setup_beets(self, disk=False):
"""Setup pristine global configuration and library for testing.
Sets ``beets.config`` so we can safely use any functionality
that uses the global configuration. All paths used are
contained in a temporary directory
Sets the following properties on itself.
- ``temp_dir`` Path to a temporary directory containing all
files specific to beets
- ``libdir`` Path to a subfolder of ``temp_dir``, containing the
library's media files. Same as ``config['directory']``.
- ``config`` The global configuration used by beets.
- ``lib`` Library instance created with the settings from
``config``.
Make sure you call ``teardown_beets()`` afterwards.
"""
self.create_temp_dir()
os.environ['BEETSDIR'] = util.py3_path(self.temp_dir)
self.config = beets.config
self.config.clear()
self.config.read()
self.config['plugins'] = []
self.config['verbose'] = 1
self.config['ui']['color'] = False
self.config['threaded'] = False
self.libdir = os.path.join(self.temp_dir, b'libdir')
os.mkdir(self.libdir)
self.config['directory'] = util.py3_path(self.libdir)
if disk:
dbpath = util.bytestring_path(
self.config['library'].as_filename()
)
else:
dbpath = ':memory:'
self.lib = Library(dbpath, self.libdir)
def teardown_beets(self):
self.lib._close()
if 'BEETSDIR' in os.environ:
del os.environ['BEETSDIR']
self.remove_temp_dir()
self.config.clear()
beets.config.read(user=False, defaults=True)
def load_plugins(self, *plugins):
"""Load and initialize plugins by names.
Similar setting a list of plugins in the configuration. Make
sure you call ``unload_plugins()`` afterwards.
"""
# FIXME this should eventually be handled by a plugin manager
beets.config['plugins'] = plugins
beets.plugins.load_plugins(plugins)
beets.plugins.find_plugins()
# Take a backup of the original _types and _queries to restore
# when unloading.
Item._original_types = dict(Item._types)
Album._original_types = dict(Album._types)
Item._types.update(beets.plugins.types(Item))
Album._types.update(beets.plugins.types(Album))
Item._original_queries = dict(Item._queries)
Album._original_queries = dict(Album._queries)
Item._queries.update(beets.plugins.named_queries(Item))
Album._queries.update(beets.plugins.named_queries(Album))
def unload_plugins(self):
"""Unload all plugins and remove the from the configuration.
"""
# FIXME this should eventually be handled by a plugin manager
beets.config['plugins'] = []
beets.plugins._classes = set()
beets.plugins._instances = {}
Item._types = Item._original_types
Album._types = Album._original_types
Item._queries = Item._original_queries
Album._queries = Album._original_queries
def create_importer(self, item_count=1, album_count=1):
"""Create files to import and return corresponding session.
Copies the specified number of files to a subdirectory of
`self.temp_dir` and creates a `ImportSessionFixture` for this path.
"""
import_dir = os.path.join(self.temp_dir, b'import')
if not os.path.isdir(import_dir):
os.mkdir(import_dir)
album_no = 0
while album_count:
album = util.bytestring_path(f'album {album_no}')
album_dir = os.path.join(import_dir, album)
if os.path.exists(album_dir):
album_no += 1
continue
os.mkdir(album_dir)
album_count -= 1
track_no = 0
album_item_count = item_count
while album_item_count:
title = f'track {track_no}'
src = os.path.join(_common.RSRC, b'full.mp3')
title_file = util.bytestring_path(f'{title}.mp3')
dest = os.path.join(album_dir, title_file)
if os.path.exists(dest):
track_no += 1
continue
album_item_count -= 1
shutil.copy(src, dest)
mediafile = MediaFile(dest)
mediafile.update({
'artist': 'artist',
'albumartist': 'album artist',
'title': title,
'album': album,
'mb_albumid': None,
'mb_trackid': None,
})
mediafile.save()
config['import']['quiet'] = True
config['import']['autotag'] = False
config['import']['resume'] = False
return ImportSessionFixture(self.lib, loghandler=None, query=None,
paths=[import_dir])
# Library fixtures methods
def create_item(self, **values):
"""Return an `Item` instance with sensible default values.
The item receives its attributes from `**values` paratmeter. The
`title`, `artist`, `album`, `track`, `format` and `path`
attributes have defaults if they are not given as parameters.
The `title` attribute is formated with a running item count to
prevent duplicates. The default for the `path` attribute
respects the `format` value.
The item is attached to the database from `self.lib`.
"""
item_count = self._get_item_count()
values_ = {
'title': 't\u00eftle {0}',
'artist': 'the \u00e4rtist',
'album': 'the \u00e4lbum',
'track': item_count,
'format': 'MP3',
}
values_.update(values)
values_['title'] = values_['title'].format(item_count)
values_['db'] = self.lib
item = Item(**values_)
if 'path' not in values:
item['path'] = 'audio.' + item['format'].lower()
# mtime needs to be set last since other assignments reset it.
item.mtime = 12345
return item
def add_item(self, **values):
"""Add an item to the library and return it.
Creates the item by passing the parameters to `create_item()`.
If `path` is not set in `values` it is set to `item.destination()`.
"""
# When specifying a path, store it normalized (as beets does
# ordinarily).
if 'path' in values:
values['path'] = util.normpath(values['path'])
item = self.create_item(**values)
item.add(self.lib)
# Ensure every item has a path.
if 'path' not in values:
item['path'] = item.destination()
item.store()
return item
def add_item_fixture(self, **values):
"""Add an item with an actual audio file to the library.
"""
item = self.create_item(**values)
extension = item['format'].lower()
item['path'] = os.path.join(_common.RSRC,
util.bytestring_path('min.' + extension))
item.add(self.lib)
item.move(operation=MoveOperation.COPY)
item.store()
return item
def add_album(self, **values):
item = self.add_item(**values)
return self.lib.add_album([item])
def add_item_fixtures(self, ext='mp3', count=1):
"""Add a number of items with files to the database.
"""
# TODO base this on `add_item()`
items = []
path = os.path.join(_common.RSRC, util.bytestring_path('full.' + ext))
for i in range(count):
item = Item.from_path(path)
item.album = f'\u00e4lbum {i}' # Check unicode paths
item.title = f't\u00eftle {i}'
# mtime needs to be set last since other assignments reset it.
item.mtime = 12345
item.add(self.lib)
item.move(operation=MoveOperation.COPY)
item.store()
items.append(item)
return items
def add_album_fixture(self, track_count=1, ext='mp3'):
"""Add an album with files to the database.
"""
items = []
path = os.path.join(_common.RSRC, util.bytestring_path('full.' + ext))
for i in range(track_count):
item = Item.from_path(path)
item.album = '\u00e4lbum' # Check unicode paths
item.title = f't\u00eftle {i}'
# mtime needs to be set last since other assignments reset it.
item.mtime = 12345
item.add(self.lib)
item.move(operation=MoveOperation.COPY)
item.store()
items.append(item)
return self.lib.add_album(items)
def create_mediafile_fixture(self, ext='mp3', images=[]):
"""Copies a fixture mediafile with the extension to a temporary
location and returns the path.
It keeps track of the created locations and will delete the with
`remove_mediafile_fixtures()`
`images` is a subset of 'png', 'jpg', and 'tiff'. For each
specified extension a cover art image is added to the media
file.
"""
src = os.path.join(_common.RSRC, util.bytestring_path('full.' + ext))
handle, path = mkstemp()
os.close(handle)
shutil.copyfile(src, path)
if images:
mediafile = MediaFile(path)
imgs = []
for img_ext in images:
file = util.bytestring_path(f'image-2x3.{img_ext}')
img_path = os.path.join(_common.RSRC, file)
with open(img_path, 'rb') as f:
imgs.append(Image(f.read()))
mediafile.images = imgs
mediafile.save()
if not hasattr(self, '_mediafile_fixtures'):
self._mediafile_fixtures = []
self._mediafile_fixtures.append(path)
return path
def remove_mediafile_fixtures(self):
if hasattr(self, '_mediafile_fixtures'):
for path in self._mediafile_fixtures:
os.remove(path)
def _get_item_count(self):
if not hasattr(self, '__item_count'):
count = 0
self.__item_count = count + 1
return count
# Running beets commands
def run_command(self, *args, **kwargs):
"""Run a beets command with an arbitrary amount of arguments. The
Library` defaults to `self.lib`, but can be overridden with
the keyword argument `lib`.
"""
sys.argv = ['beet'] # avoid leakage from test suite args
lib = None
if hasattr(self, 'lib'):
lib = self.lib
lib = kwargs.get('lib', lib)
beets.ui._raw_main(_convert_args(list(args)), lib)
def run_with_output(self, *args):
with capture_stdout() as out:
self.run_command(*args)
return util.text_string(out.getvalue())
# Safe file operations
def create_temp_dir(self):
"""Create a temporary directory and assign it into
`self.temp_dir`. Call `remove_temp_dir` later to delete it.
"""
temp_dir = mkdtemp()
self.temp_dir = util.bytestring_path(temp_dir)
def remove_temp_dir(self):
"""Delete the temporary directory created by `create_temp_dir`.
"""
shutil.rmtree(self.temp_dir)
def touch(self, path, dir=None, content=''):
"""Create a file at `path` with given content.
If `dir` is given, it is prepended to `path`. After that, if the
path is relative, it is resolved with respect to
`self.temp_dir`.
"""
if dir:
path = os.path.join(dir, path)
if not os.path.isabs(path):
path = os.path.join(self.temp_dir, path)
parent = os.path.dirname(path)
if not os.path.isdir(parent):
os.makedirs(util.syspath(parent))
with open(util.syspath(path), 'a+') as f:
f.write(content)
return path
class ImportSessionFixture(importer.ImportSession):
"""ImportSession that can be controlled programaticaly.
>>> lib = Library(':memory:')
>>> importer = ImportSessionFixture(lib, paths=['/path/to/import'])
>>> importer.add_choice(importer.action.SKIP)
>>> importer.add_choice(importer.action.ASIS)
>>> importer.default_choice = importer.action.APPLY
>>> importer.run()
This imports ``/path/to/import`` into `lib`. It skips the first
album and imports thesecond one with metadata from the tags. For the
remaining albums, the metadata from the autotagger will be applied.
"""
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self._choices = []
self._resolutions = []
default_choice = importer.action.APPLY
def add_choice(self, choice):
self._choices.append(choice)
def clear_choices(self):
self._choices = []
def choose_match(self, task):
try:
choice = self._choices.pop(0)
except IndexError:
choice = self.default_choice
if choice == importer.action.APPLY:
return task.candidates[0]
elif isinstance(choice, int):
return task.candidates[choice - 1]
else:
return choice
choose_item = choose_match
Resolution = Enum('Resolution', 'REMOVE SKIP KEEPBOTH MERGE')
default_resolution = 'REMOVE'
def add_resolution(self, resolution):
assert isinstance(resolution, self.Resolution)
self._resolutions.append(resolution)
def resolve_duplicate(self, task, found_duplicates):
try:
res = self._resolutions.pop(0)
except IndexError:
res = self.default_resolution
if res == self.Resolution.SKIP:
task.set_choice(importer.action.SKIP)
elif res == self.Resolution.REMOVE:
task.should_remove_duplicates = True
elif res == self.Resolution.MERGE:
task.should_merge_duplicates = True
def generate_album_info(album_id, track_values):
"""Return `AlbumInfo` populated with mock data.
Sets the album info's `album_id` field is set to the corresponding
argument. For each pair (`id`, `values`) in `track_values` the `TrackInfo`
from `generate_track_info` is added to the album info's `tracks` field.
Most other fields of the album and track info are set to "album
info" and "track info", respectively.
"""
tracks = [generate_track_info(id, values) for id, values in track_values]
album = AlbumInfo(
album_id='album info',
album='album info',
artist='album info',
artist_id='album info',
tracks=tracks,
)
for field in ALBUM_INFO_FIELDS:
setattr(album, field, 'album info')
return album
ALBUM_INFO_FIELDS = ['album', 'album_id', 'artist', 'artist_id',
'asin', 'albumtype', 'va', 'label',
'artist_sort', 'releasegroup_id', 'catalognum',
'language', 'country', 'albumstatus', 'media',
'albumdisambig', 'releasegroupdisambig', 'artist_credit',
'data_source', 'data_url']
def generate_track_info(track_id='track info', values={}):
"""Return `TrackInfo` populated with mock data.
The `track_id` field is set to the corresponding argument. All other
string fields are set to "track info".
"""
track = TrackInfo(
title='track info',
track_id=track_id,
)
for field in TRACK_INFO_FIELDS:
setattr(track, field, 'track info')
for field, value in values.items():
setattr(track, field, value)
return track
TRACK_INFO_FIELDS = ['artist', 'artist_id', 'artist_sort',
'disctitle', 'artist_credit', 'data_source',
'data_url']