_ Git - youtube-dl/blob - test/test_YoutubeDL.py

   1 #!/usr/bin/env python
   2
   3 from __future__ import unicode_literals
   4
   5 # Allow direct execution
   6 import os
   7 import sys
   8 import unittest
   9 sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
  10
  11 import copy
  12
  13 from test.helper import FakeYDL, assertRegexpMatches
  14 from youtube_dl import YoutubeDL
  15 from youtube_dl.compat import compat_str
  16 from youtube_dl.extractor import YoutubeIE
  17 from youtube_dl.postprocessor.common import PostProcessor
  18 from youtube_dl.utils import match_filter_func
  19
  20 TEST_URL = 'http://localhost/sample.mp4'
  21
  22
  23 class YDL(FakeYDL):
  24     def __init__(self, *args, **kwargs):
  25         super(YDL, self).__init__(*args, **kwargs)
  26         self.downloaded_info_dicts = []
  27         self.msgs = []
  28
  29     def process_info(self, info_dict):
  30         self.downloaded_info_dicts.append(info_dict)
  31
  32     def to_screen(self, msg):
  33         self.msgs.append(msg)
  34
  35
  36 def _make_result(formats, **kwargs):
  37     res = {
  38         'formats': formats,
  39         'id': 'testid',
  40         'title': 'testttitle',
  41         'extractor': 'testex',
  42     }
  43     res.update(**kwargs)
  44     return res
  45
  46
  47 class TestFormatSelection(unittest.TestCase):
  48     def test_prefer_free_formats(self):
  49         # Same resolution => download webm
  50         ydl = YDL()
  51         ydl.params['prefer_free_formats'] = True
  52         formats = [
  53             {'ext': 'webm', 'height': 460, 'url': TEST_URL},
  54             {'ext': 'mp4', 'height': 460, 'url': TEST_URL},
  55         ]
  56         info_dict = _make_result(formats)
  57         yie = YoutubeIE(ydl)
  58         yie._sort_formats(info_dict['formats'])
  59         ydl.process_ie_result(info_dict)
  60         downloaded = ydl.downloaded_info_dicts[0]
  61         self.assertEqual(downloaded['ext'], 'webm')
  62
  63         # Different resolution => download best quality (mp4)
  64         ydl = YDL()
  65         ydl.params['prefer_free_formats'] = True
  66         formats = [
  67             {'ext': 'webm', 'height': 720, 'url': TEST_URL},
  68             {'ext': 'mp4', 'height': 1080, 'url': TEST_URL},
  69         ]
  70         info_dict['formats'] = formats
  71         yie = YoutubeIE(ydl)
  72         yie._sort_formats(info_dict['formats'])
  73         ydl.process_ie_result(info_dict)
  74         downloaded = ydl.downloaded_info_dicts[0]
  75         self.assertEqual(downloaded['ext'], 'mp4')
  76
  77         # No prefer_free_formats => prefer mp4 and flv for greater compatibility
  78         ydl = YDL()
  79         ydl.params['prefer_free_formats'] = False
  80         formats = [
  81             {'ext': 'webm', 'height': 720, 'url': TEST_URL},
  82             {'ext': 'mp4', 'height': 720, 'url': TEST_URL},
  83             {'ext': 'flv', 'height': 720, 'url': TEST_URL},
  84         ]
  85         info_dict['formats'] = formats
  86         yie = YoutubeIE(ydl)
  87         yie._sort_formats(info_dict['formats'])
  88         ydl.process_ie_result(info_dict)
  89         downloaded = ydl.downloaded_info_dicts[0]
  90         self.assertEqual(downloaded['ext'], 'mp4')
  91
  92         ydl = YDL()
  93         ydl.params['prefer_free_formats'] = False
  94         formats = [
  95             {'ext': 'flv', 'height': 720, 'url': TEST_URL},
  96             {'ext': 'webm', 'height': 720, 'url': TEST_URL},
  97         ]
  98         info_dict['formats'] = formats
  99         yie = YoutubeIE(ydl)
 100         yie._sort_formats(info_dict['formats'])
 101         ydl.process_ie_result(info_dict)
 102         downloaded = ydl.downloaded_info_dicts[0]
 103         self.assertEqual(downloaded['ext'], 'flv')
 104
 105     def test_format_selection(self):
 106         formats = [
 107             {'format_id': '35', 'ext': 'mp4', 'preference': 1, 'url': TEST_URL},
 108             {'format_id': '45', 'ext': 'webm', 'preference': 2, 'url': TEST_URL},
 109             {'format_id': '47', 'ext': 'webm', 'preference': 3, 'url': TEST_URL},
 110             {'format_id': '2', 'ext': 'flv', 'preference': 4, 'url': TEST_URL},
 111         ]
 112         info_dict = _make_result(formats)
 113
 114         ydl = YDL({'format': '20/47'})
 115         ydl.process_ie_result(info_dict.copy())
 116         downloaded = ydl.downloaded_info_dicts[0]
 117         self.assertEqual(downloaded['format_id'], '47')
 118
 119         ydl = YDL({'format': '20/71/worst'})
 120         ydl.process_ie_result(info_dict.copy())
 121         downloaded = ydl.downloaded_info_dicts[0]
 122         self.assertEqual(downloaded['format_id'], '35')
 123
 124         ydl = YDL()
 125         ydl.process_ie_result(info_dict.copy())
 126         downloaded = ydl.downloaded_info_dicts[0]
 127         self.assertEqual(downloaded['format_id'], '2')
 128
 129         ydl = YDL({'format': 'webm/mp4'})
 130         ydl.process_ie_result(info_dict.copy())
 131         downloaded = ydl.downloaded_info_dicts[0]
 132         self.assertEqual(downloaded['format_id'], '47')
 133
 134         ydl = YDL({'format': '3gp/40/mp4'})
 135         ydl.process_ie_result(info_dict.copy())
 136         downloaded = ydl.downloaded_info_dicts[0]
 137         self.assertEqual(downloaded['format_id'], '35')
 138
 139     def test_format_selection_audio(self):
 140         formats = [
 141             {'format_id': 'audio-low', 'ext': 'webm', 'preference': 1, 'vcodec': 'none', 'url': TEST_URL},
 142             {'format_id': 'audio-mid', 'ext': 'webm', 'preference': 2, 'vcodec': 'none', 'url': TEST_URL},
 143             {'format_id': 'audio-high', 'ext': 'flv', 'preference': 3, 'vcodec': 'none', 'url': TEST_URL},
 144             {'format_id': 'vid', 'ext': 'mp4', 'preference': 4, 'url': TEST_URL},
 145         ]
 146         info_dict = _make_result(formats)
 147
 148         ydl = YDL({'format': 'bestaudio'})
 149         ydl.process_ie_result(info_dict.copy())
 150         downloaded = ydl.downloaded_info_dicts[0]
 151         self.assertEqual(downloaded['format_id'], 'audio-high')
 152
 153         ydl = YDL({'format': 'worstaudio'})
 154         ydl.process_ie_result(info_dict.copy())
 155         downloaded = ydl.downloaded_info_dicts[0]
 156         self.assertEqual(downloaded['format_id'], 'audio-low')
 157
 158         formats = [
 159             {'format_id': 'vid-low', 'ext': 'mp4', 'preference': 1, 'url': TEST_URL},
 160             {'format_id': 'vid-high', 'ext': 'mp4', 'preference': 2, 'url': TEST_URL},
 161         ]
 162         info_dict = _make_result(formats)
 163
 164         ydl = YDL({'format': 'bestaudio/worstaudio/best'})
 165         ydl.process_ie_result(info_dict.copy())
 166         downloaded = ydl.downloaded_info_dicts[0]
 167         self.assertEqual(downloaded['format_id'], 'vid-high')
 168
 169     def test_format_selection_audio_exts(self):
 170         formats = [
 171             {'format_id': 'mp3-64', 'ext': 'mp3', 'abr': 64, 'url': 'http://_', 'vcodec': 'none'},
 172             {'format_id': 'ogg-64', 'ext': 'ogg', 'abr': 64, 'url': 'http://_', 'vcodec': 'none'},
 173             {'format_id': 'aac-64', 'ext': 'aac', 'abr': 64, 'url': 'http://_', 'vcodec': 'none'},
 174             {'format_id': 'mp3-32', 'ext': 'mp3', 'abr': 32, 'url': 'http://_', 'vcodec': 'none'},
 175             {'format_id': 'aac-32', 'ext': 'aac', 'abr': 32, 'url': 'http://_', 'vcodec': 'none'},
 176         ]
 177
 178         info_dict = _make_result(formats)
 179         ydl = YDL({'format': 'best'})
 180         ie = YoutubeIE(ydl)
 181         ie._sort_formats(info_dict['formats'])
 182         ydl.process_ie_result(copy.deepcopy(info_dict))
 183         downloaded = ydl.downloaded_info_dicts[0]
 184         self.assertEqual(downloaded['format_id'], 'aac-64')
 185
 186         ydl = YDL({'format': 'mp3'})
 187         ie = YoutubeIE(ydl)
 188         ie._sort_formats(info_dict['formats'])
 189         ydl.process_ie_result(copy.deepcopy(info_dict))
 190         downloaded = ydl.downloaded_info_dicts[0]
 191         self.assertEqual(downloaded['format_id'], 'mp3-64')
 192
 193         ydl = YDL({'prefer_free_formats': True})
 194         ie = YoutubeIE(ydl)
 195         ie._sort_formats(info_dict['formats'])
 196         ydl.process_ie_result(copy.deepcopy(info_dict))
 197         downloaded = ydl.downloaded_info_dicts[0]
 198         self.assertEqual(downloaded['format_id'], 'ogg-64')
 199
 200     def test_format_selection_video(self):
 201         formats = [
 202             {'format_id': 'dash-video-low', 'ext': 'mp4', 'preference': 1, 'acodec': 'none', 'url': TEST_URL},
 203             {'format_id': 'dash-video-high', 'ext': 'mp4', 'preference': 2, 'acodec': 'none', 'url': TEST_URL},
 204             {'format_id': 'vid', 'ext': 'mp4', 'preference': 3, 'url': TEST_URL},
 205         ]
 206         info_dict = _make_result(formats)
 207
 208         ydl = YDL({'format': 'bestvideo'})
 209         ydl.process_ie_result(info_dict.copy())
 210         downloaded = ydl.downloaded_info_dicts[0]
 211         self.assertEqual(downloaded['format_id'], 'dash-video-high')
 212
 213         ydl = YDL({'format': 'worstvideo'})
 214         ydl.process_ie_result(info_dict.copy())
 215         downloaded = ydl.downloaded_info_dicts[0]
 216         self.assertEqual(downloaded['format_id'], 'dash-video-low')
 217
 218     def test_youtube_format_selection(self):
 219         order = [
 220             '38', '37', '46', '22', '45', '35', '44', '18', '34', '43', '6', '5', '36', '17', '13',
 221             # Apple HTTP Live Streaming
 222             '96', '95', '94', '93', '92', '132', '151',
 223             # 3D
 224             '85', '84', '102', '83', '101', '82', '100',
 225             # Dash video
 226             '137', '248', '136', '247', '135', '246',
 227             '245', '244', '134', '243', '133', '242', '160',
 228             # Dash audio
 229             '141', '172', '140', '171', '139',
 230         ]
 231
 232         def format_info(f_id):
 233             info = YoutubeIE._formats[f_id].copy()
 234             info['format_id'] = f_id
 235             info['url'] = 'url:' + f_id
 236             return info
 237         formats_order = [format_info(f_id) for f_id in order]
 238
 239         info_dict = _make_result(list(formats_order), extractor='youtube')
 240         ydl = YDL({'format': 'bestvideo+bestaudio'})
 241         yie = YoutubeIE(ydl)
 242         yie._sort_formats(info_dict['formats'])
 243         ydl.process_ie_result(info_dict)
 244         downloaded = ydl.downloaded_info_dicts[0]
 245         self.assertEqual(downloaded['format_id'], '137+141')
 246         self.assertEqual(downloaded['ext'], 'mp4')
 247
 248         info_dict = _make_result(list(formats_order), extractor='youtube')
 249         ydl = YDL({'format': 'bestvideo[height>=999999]+bestaudio/best'})
 250         yie = YoutubeIE(ydl)
 251         yie._sort_formats(info_dict['formats'])
 252         ydl.process_ie_result(info_dict)
 253         downloaded = ydl.downloaded_info_dicts[0]
 254         self.assertEqual(downloaded['format_id'], '38')
 255
 256         info_dict = _make_result(list(formats_order), extractor='youtube')
 257         ydl = YDL({'format': 'bestvideo/best,bestaudio'})
 258         yie = YoutubeIE(ydl)
 259         yie._sort_formats(info_dict['formats'])
 260         ydl.process_ie_result(info_dict)
 261         downloaded_ids = [info['format_id'] for info in ydl.downloaded_info_dicts]
 262         self.assertEqual(downloaded_ids, ['137', '141'])
 263
 264         info_dict = _make_result(list(formats_order), extractor='youtube')
 265         ydl = YDL({'format': '(bestvideo[ext=mp4],bestvideo[ext=webm])+bestaudio'})
 266         yie = YoutubeIE(ydl)
 267         yie._sort_formats(info_dict['formats'])
 268         ydl.process_ie_result(info_dict)
 269         downloaded_ids = [info['format_id'] for info in ydl.downloaded_info_dicts]
 270         self.assertEqual(downloaded_ids, ['137+141', '248+141'])
 271
 272         info_dict = _make_result(list(formats_order), extractor='youtube')
 273         ydl = YDL({'format': '(bestvideo[ext=mp4],bestvideo[ext=webm])[height<=720]+bestaudio'})
 274         yie = YoutubeIE(ydl)
 275         yie._sort_formats(info_dict['formats'])
 276         ydl.process_ie_result(info_dict)
 277         downloaded_ids = [info['format_id'] for info in ydl.downloaded_info_dicts]
 278         self.assertEqual(downloaded_ids, ['136+141', '247+141'])
 279
 280         info_dict = _make_result(list(formats_order), extractor='youtube')
 281         ydl = YDL({'format': '(bestvideo[ext=none]/bestvideo[ext=webm])+bestaudio'})
 282         yie = YoutubeIE(ydl)
 283         yie._sort_formats(info_dict['formats'])
 284         ydl.process_ie_result(info_dict)
 285         downloaded_ids = [info['format_id'] for info in ydl.downloaded_info_dicts]
 286         self.assertEqual(downloaded_ids, ['248+141'])
 287
 288         for f1, f2 in zip(formats_order, formats_order[1:]):
 289             info_dict = _make_result([f1, f2], extractor='youtube')
 290             ydl = YDL({'format': 'best/bestvideo'})
 291             yie = YoutubeIE(ydl)
 292             yie._sort_formats(info_dict['formats'])
 293             ydl.process_ie_result(info_dict)
 294             downloaded = ydl.downloaded_info_dicts[0]
 295             self.assertEqual(downloaded['format_id'], f1['format_id'])
 296
 297             info_dict = _make_result([f2, f1], extractor='youtube')
 298             ydl = YDL({'format': 'best/bestvideo'})
 299             yie = YoutubeIE(ydl)
 300             yie._sort_formats(info_dict['formats'])
 301             ydl.process_ie_result(info_dict)
 302             downloaded = ydl.downloaded_info_dicts[0]
 303             self.assertEqual(downloaded['format_id'], f1['format_id'])
 304
 305     def test_format_filtering(self):
 306         formats = [
 307             {'format_id': 'A', 'filesize': 500, 'width': 1000},
 308             {'format_id': 'B', 'filesize': 1000, 'width': 500},
 309             {'format_id': 'C', 'filesize': 1000, 'width': 400},
 310             {'format_id': 'D', 'filesize': 2000, 'width': 600},
 311             {'format_id': 'E', 'filesize': 3000},
 312             {'format_id': 'F'},
 313             {'format_id': 'G', 'filesize': 1000000},
 314         ]
 315         for f in formats:
 316             f['url'] = 'http://_/'
 317             f['ext'] = 'unknown'
 318         info_dict = _make_result(formats)
 319
 320         ydl = YDL({'format': 'best[filesize<3000]'})
 321         ydl.process_ie_result(info_dict)
 322         downloaded = ydl.downloaded_info_dicts[0]
 323         self.assertEqual(downloaded['format_id'], 'D')
 324
 325         ydl = YDL({'format': 'best[filesize<=3000]'})
 326         ydl.process_ie_result(info_dict)
 327         downloaded = ydl.downloaded_info_dicts[0]
 328         self.assertEqual(downloaded['format_id'], 'E')
 329
 330         ydl = YDL({'format': 'best[filesize <= ? 3000]'})
 331         ydl.process_ie_result(info_dict)
 332         downloaded = ydl.downloaded_info_dicts[0]
 333         self.assertEqual(downloaded['format_id'], 'F')
 334
 335         ydl = YDL({'format': 'best [filesize = 1000] [width>450]'})
 336         ydl.process_ie_result(info_dict)
 337         downloaded = ydl.downloaded_info_dicts[0]
 338         self.assertEqual(downloaded['format_id'], 'B')
 339
 340         ydl = YDL({'format': 'best [filesize = 1000] [width!=450]'})
 341         ydl.process_ie_result(info_dict)
 342         downloaded = ydl.downloaded_info_dicts[0]
 343         self.assertEqual(downloaded['format_id'], 'C')
 344
 345         ydl = YDL({'format': '[filesize>?1]'})
 346         ydl.process_ie_result(info_dict)
 347         downloaded = ydl.downloaded_info_dicts[0]
 348         self.assertEqual(downloaded['format_id'], 'G')
 349
 350         ydl = YDL({'format': '[filesize<1M]'})
 351         ydl.process_ie_result(info_dict)
 352         downloaded = ydl.downloaded_info_dicts[0]
 353         self.assertEqual(downloaded['format_id'], 'E')
 354
 355         ydl = YDL({'format': '[filesize<1MiB]'})
 356         ydl.process_ie_result(info_dict)
 357         downloaded = ydl.downloaded_info_dicts[0]
 358         self.assertEqual(downloaded['format_id'], 'G')
 359
 360         ydl = YDL({'format': 'all[width>=400][width<=600]'})
 361         ydl.process_ie_result(info_dict)
 362         downloaded_ids = [info['format_id'] for info in ydl.downloaded_info_dicts]
 363         self.assertEqual(downloaded_ids, ['B', 'C', 'D'])
 364
 365
 366 class TestYoutubeDL(unittest.TestCase):
 367     def test_subtitles(self):
 368         def s_formats(lang, autocaption=False):
 369             return [{
 370                 'ext': ext,
 371                 'url': 'http://localhost/video.%s.%s' % (lang, ext),
 372                 '_auto': autocaption,
 373             } for ext in ['vtt', 'srt', 'ass']]
 374         subtitles = dict((l, s_formats(l)) for l in ['en', 'fr', 'es'])
 375         auto_captions = dict((l, s_formats(l, True)) for l in ['it', 'pt', 'es'])
 376         info_dict = {
 377             'id': 'test',
 378             'title': 'Test',
 379             'url': 'http://localhost/video.mp4',
 380             'subtitles': subtitles,
 381             'automatic_captions': auto_captions,
 382             'extractor': 'TEST',
 383         }
 384
 385         def get_info(params={}):
 386             params.setdefault('simulate', True)
 387             ydl = YDL(params)
 388             ydl.report_warning = lambda *args, **kargs: None
 389             return ydl.process_video_result(info_dict, download=False)
 390
 391         result = get_info()
 392         self.assertFalse(result.get('requested_subtitles'))
 393         self.assertEqual(result['subtitles'], subtitles)
 394         self.assertEqual(result['automatic_captions'], auto_captions)
 395
 396         result = get_info({'writesubtitles': True})
 397         subs = result['requested_subtitles']
 398         self.assertTrue(subs)
 399         self.assertEqual(set(subs.keys()), set(['en']))
 400         self.assertTrue(subs['en'].get('data') is None)
 401         self.assertEqual(subs['en']['ext'], 'ass')
 402
 403         result = get_info({'writesubtitles': True, 'subtitlesformat': 'foo/srt'})
 404         subs = result['requested_subtitles']
 405         self.assertEqual(subs['en']['ext'], 'srt')
 406
 407         result = get_info({'writesubtitles': True, 'subtitleslangs': ['es', 'fr', 'it']})
 408         subs = result['requested_subtitles']
 409         self.assertTrue(subs)
 410         self.assertEqual(set(subs.keys()), set(['es', 'fr']))
 411
 412         result = get_info({'writesubtitles': True, 'writeautomaticsub': True, 'subtitleslangs': ['es', 'pt']})
 413         subs = result['requested_subtitles']
 414         self.assertTrue(subs)
 415         self.assertEqual(set(subs.keys()), set(['es', 'pt']))
 416         self.assertFalse(subs['es']['_auto'])
 417         self.assertTrue(subs['pt']['_auto'])
 418
 419         result = get_info({'writeautomaticsub': True, 'subtitleslangs': ['es', 'pt']})
 420         subs = result['requested_subtitles']
 421         self.assertTrue(subs)
 422         self.assertEqual(set(subs.keys()), set(['es', 'pt']))
 423         self.assertTrue(subs['es']['_auto'])
 424         self.assertTrue(subs['pt']['_auto'])
 425
 426     def test_add_extra_info(self):
 427         test_dict = {
 428             'extractor': 'Foo',
 429         }
 430         extra_info = {
 431             'extractor': 'Bar',
 432             'playlist': 'funny videos',
 433         }
 434         YDL.add_extra_info(test_dict, extra_info)
 435         self.assertEqual(test_dict['extractor'], 'Foo')
 436         self.assertEqual(test_dict['playlist'], 'funny videos')
 437
 438     def test_prepare_filename(self):
 439         info = {
 440             'id': '1234',
 441             'ext': 'mp4',
 442             'width': None,
 443         }
 444
 445         def fname(templ):
 446             ydl = YoutubeDL({'outtmpl': templ})
 447             return ydl.prepare_filename(info)
 448         self.assertEqual(fname('%(id)s.%(ext)s'), '1234.mp4')
 449         self.assertEqual(fname('%(id)s-%(width)s.%(ext)s'), '1234-NA.mp4')
 450         # Replace missing fields with 'NA'
 451         self.assertEqual(fname('%(uploader_date)s-%(id)s.%(ext)s'), 'NA-1234.mp4')
 452
 453     def test_format_note(self):
 454         ydl = YoutubeDL()
 455         self.assertEqual(ydl._format_note({}), '')
 456         assertRegexpMatches(self, ydl._format_note({
 457             'vbr': 10,
 458         }), '^\s*10k$')
 459
 460     def test_postprocessors(self):
 461         filename = 'post-processor-testfile.mp4'
 462         audiofile = filename + '.mp3'
 463
 464         class SimplePP(PostProcessor):
 465             def run(self, info):
 466                 with open(audiofile, 'wt') as f:
 467                     f.write('EXAMPLE')
 468                 return [info['filepath']], info
 469
 470         def run_pp(params, PP):
 471             with open(filename, 'wt') as f:
 472                 f.write('EXAMPLE')
 473             ydl = YoutubeDL(params)
 474             ydl.add_post_processor(PP())
 475             ydl.post_process(filename, {'filepath': filename})
 476
 477         run_pp({'keepvideo': True}, SimplePP)
 478         self.assertTrue(os.path.exists(filename), '%s doesn\'t exist' % filename)
 479         self.assertTrue(os.path.exists(audiofile), '%s doesn\'t exist' % audiofile)
 480         os.unlink(filename)
 481         os.unlink(audiofile)
 482
 483         run_pp({'keepvideo': False}, SimplePP)
 484         self.assertFalse(os.path.exists(filename), '%s exists' % filename)
 485         self.assertTrue(os.path.exists(audiofile), '%s doesn\'t exist' % audiofile)
 486         os.unlink(audiofile)
 487
 488         class ModifierPP(PostProcessor):
 489             def run(self, info):
 490                 with open(info['filepath'], 'wt') as f:
 491                     f.write('MODIFIED')
 492                 return [], info
 493
 494         run_pp({'keepvideo': False}, ModifierPP)
 495         self.assertTrue(os.path.exists(filename), '%s doesn\'t exist' % filename)
 496         os.unlink(filename)
 497
 498     def test_match_filter(self):
 499         class FilterYDL(YDL):
 500             def __init__(self, *args, **kwargs):
 501                 super(FilterYDL, self).__init__(*args, **kwargs)
 502                 self.params['simulate'] = True
 503
 504             def process_info(self, info_dict):
 505                 super(YDL, self).process_info(info_dict)
 506
 507             def _match_entry(self, info_dict, incomplete):
 508                 res = super(FilterYDL, self)._match_entry(info_dict, incomplete)
 509                 if res is None:
 510                     self.downloaded_info_dicts.append(info_dict)
 511                 return res
 512
 513         first = {
 514             'id': '1',
 515             'url': TEST_URL,
 516             'title': 'one',
 517             'extractor': 'TEST',
 518             'duration': 30,
 519             'filesize': 10 * 1024,
 520         }
 521         second = {
 522             'id': '2',
 523             'url': TEST_URL,
 524             'title': 'two',
 525             'extractor': 'TEST',
 526             'duration': 10,
 527             'description': 'foo',
 528             'filesize': 5 * 1024,
 529         }
 530         videos = [first, second]
 531
 532         def get_videos(filter_=None):
 533             ydl = FilterYDL({'match_filter': filter_})
 534             for v in videos:
 535                 ydl.process_ie_result(v, download=True)
 536             return [v['id'] for v in ydl.downloaded_info_dicts]
 537
 538         res = get_videos()
 539         self.assertEqual(res, ['1', '2'])
 540
 541         def f(v):
 542             if v['id'] == '1':
 543                 return None
 544             else:
 545                 return 'Video id is not 1'
 546         res = get_videos(f)
 547         self.assertEqual(res, ['1'])
 548
 549         f = match_filter_func('duration < 30')
 550         res = get_videos(f)
 551         self.assertEqual(res, ['2'])
 552
 553         f = match_filter_func('description = foo')
 554         res = get_videos(f)
 555         self.assertEqual(res, ['2'])
 556
 557         f = match_filter_func('description =? foo')
 558         res = get_videos(f)
 559         self.assertEqual(res, ['1', '2'])
 560
 561         f = match_filter_func('filesize > 5KiB')
 562         res = get_videos(f)
 563         self.assertEqual(res, ['1'])
 564
 565     def test_playlist_items_selection(self):
 566         entries = [{
 567             'id': compat_str(i),
 568             'title': compat_str(i),
 569             'url': TEST_URL,
 570         } for i in range(1, 5)]
 571         playlist = {
 572             '_type': 'playlist',
 573             'id': 'test',
 574             'entries': entries,
 575             'extractor': 'test:playlist',
 576             'extractor_key': 'test:playlist',
 577             'webpage_url': 'http://example.com',
 578         }
 579
 580         def get_ids(params):
 581             ydl = YDL(params)
 582             # make a copy because the dictionary can be modified
 583             ydl.process_ie_result(playlist.copy())
 584             return [int(v['id']) for v in ydl.downloaded_info_dicts]
 585
 586         result = get_ids({})
 587         self.assertEqual(result, [1, 2, 3, 4])
 588
 589         result = get_ids({'playlistend': 10})
 590         self.assertEqual(result, [1, 2, 3, 4])
 591
 592         result = get_ids({'playlistend': 2})
 593         self.assertEqual(result, [1, 2])
 594
 595         result = get_ids({'playliststart': 10})
 596         self.assertEqual(result, [])
 597
 598         result = get_ids({'playliststart': 2})
 599         self.assertEqual(result, [2, 3, 4])
 600
 601         result = get_ids({'playlist_items': '2-4'})
 602         self.assertEqual(result, [2, 3, 4])
 603
 604         result = get_ids({'playlist_items': '2,4'})
 605         self.assertEqual(result, [2, 4])
 606
 607         result = get_ids({'playlist_items': '10'})
 608         self.assertEqual(result, [])
 609
 610
 611 if __name__ == '__main__':
 612     unittest.main()