test/test_utils.py

   1 #!/usr/bin/env python3
   2
   3 # Allow direct execution
   4 import os
   5 import sys
   6 import unittest
   7 import unittest.mock
   8 import warnings
   9 import datetime as dt
  10
  11 sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
  12
  13
  14 import contextlib
  15 import io
  16 import itertools
  17 import json
  18 import subprocess
  19 import xml.etree.ElementTree
  20
  21 from yt_dlp.compat import (
  22     compat_etree_fromstring,
  23     compat_HTMLParseError,
  24 )
  25 from yt_dlp.utils import (
  26     Config,
  27     DateRange,
  28     ExtractorError,
  29     InAdvancePagedList,
  30     LazyList,
  31     NO_DEFAULT,
  32     OnDemandPagedList,
  33     Popen,
  34     age_restricted,
  35     args_to_str,
  36     base_url,
  37     caesar,
  38     clean_html,
  39     clean_podcast_url,
  40     cli_bool_option,
  41     cli_option,
  42     cli_valueless_option,
  43     date_from_str,
  44     datetime_from_str,
  45     detect_exe_version,
  46     determine_ext,
  47     determine_file_encoding,
  48     dfxp2srt,
  49     encode_base_n,
  50     encode_compat_str,
  51     expand_path,
  52     extract_attributes,
  53     extract_basic_auth,
  54     find_xpath_attr,
  55     fix_xml_ampersands,
  56     float_or_none,
  57     format_bytes,
  58     get_compatible_ext,
  59     get_element_by_attribute,
  60     get_element_by_class,
  61     get_element_html_by_attribute,
  62     get_element_html_by_class,
  63     get_element_text_and_html_by_tag,
  64     get_elements_by_attribute,
  65     get_elements_by_class,
  66     get_elements_html_by_attribute,
  67     get_elements_html_by_class,
  68     get_elements_text_and_html_by_attribute,
  69     int_or_none,
  70     iri_to_uri,
  71     is_html,
  72     js_to_json,
  73     limit_length,
  74     locked_file,
  75     lowercase_escape,
  76     match_str,
  77     merge_dicts,
  78     mimetype2ext,
  79     month_by_name,
  80     multipart_encode,
  81     ohdave_rsa_encrypt,
  82     orderedSet,
  83     parse_age_limit,
  84     parse_bitrate,
  85     parse_codecs,
  86     parse_count,
  87     parse_dfxp_time_expr,
  88     parse_duration,
  89     parse_filesize,
  90     parse_iso8601,
  91     parse_qs,
  92     parse_resolution,
  93     pkcs1pad,
  94     prepend_extension,
  95     read_batch_urls,
  96     remove_end,
  97     remove_quotes,
  98     remove_start,
  99     render_table,
 100     replace_extension,
 101     rot47,
 102     sanitize_filename,
 103     sanitize_path,
 104     sanitize_url,
 105     shell_quote,
 106     smuggle_url,
 107     str_to_int,
 108     strip_jsonp,
 109     strip_or_none,
 110     subtitles_filename,
 111     timeconvert,
 112     try_call,
 113     unescapeHTML,
 114     unified_strdate,
 115     unified_timestamp,
 116     unsmuggle_url,
 117     update_url_query,
 118     uppercase_escape,
 119     url_basename,
 120     url_or_none,
 121     urlencode_postdata,
 122     urljoin,
 123     urshift,
 124     variadic,
 125     version_tuple,
 126     xpath_attr,
 127     xpath_element,
 128     xpath_text,
 129     xpath_with_ns,
 130 )
 131 from yt_dlp.utils._utils import _UnsafeExtensionError
 132 from yt_dlp.utils.networking import (
 133     HTTPHeaderDict,
 134     escape_rfc3986,
 135     normalize_url,
 136     remove_dot_segments,
 137 )
 138
 139
 140 class TestUtil(unittest.TestCase):
 141     def test_timeconvert(self):
 142         self.assertTrue(timeconvert('') is None)
 143         self.assertTrue(timeconvert('bougrg') is None)
 144
 145     def test_sanitize_filename(self):
 146         self.assertEqual(sanitize_filename(''), '')
 147         self.assertEqual(sanitize_filename('abc'), 'abc')
 148         self.assertEqual(sanitize_filename('abc_d-e'), 'abc_d-e')
 149
 150         self.assertEqual(sanitize_filename('123'), '123')
 151
 152         self.assertEqual('abc⧸de', sanitize_filename('abc/de'))
 153         self.assertFalse('/' in sanitize_filename('abc/de///'))
 154
 155         self.assertEqual('abc_de', sanitize_filename('abc/<>\\*|de', is_id=False))
 156         self.assertEqual('xxx', sanitize_filename('xxx/<>\\*|', is_id=False))
 157         self.assertEqual('yes no', sanitize_filename('yes? no', is_id=False))
 158         self.assertEqual('this - that', sanitize_filename('this: that', is_id=False))
 159
 160         self.assertEqual(sanitize_filename('AT&T'), 'AT&T')
 161         aumlaut = 'ä'
 162         self.assertEqual(sanitize_filename(aumlaut), aumlaut)
 163         tests = '\u043a\u0438\u0440\u0438\u043b\u043b\u0438\u0446\u0430'
 164         self.assertEqual(sanitize_filename(tests), tests)
 165
 166         self.assertEqual(
 167             sanitize_filename('New World record at 0:12:34'),
 168             'New World record at 0_12_34')
 169
 170         self.assertEqual(sanitize_filename('--gasdgf'), '--gasdgf')
 171         self.assertEqual(sanitize_filename('--gasdgf', is_id=True), '--gasdgf')
 172         self.assertEqual(sanitize_filename('--gasdgf', is_id=False), '_-gasdgf')
 173         self.assertEqual(sanitize_filename('.gasdgf'), '.gasdgf')
 174         self.assertEqual(sanitize_filename('.gasdgf', is_id=True), '.gasdgf')
 175         self.assertEqual(sanitize_filename('.gasdgf', is_id=False), 'gasdgf')
 176
 177         forbidden = '"\0\\/'
 178         for fc in forbidden:
 179             for fbc in forbidden:
 180                 self.assertTrue(fbc not in sanitize_filename(fc))
 181
 182     def test_sanitize_filename_restricted(self):
 183         self.assertEqual(sanitize_filename('abc', restricted=True), 'abc')
 184         self.assertEqual(sanitize_filename('abc_d-e', restricted=True), 'abc_d-e')
 185
 186         self.assertEqual(sanitize_filename('123', restricted=True), '123')
 187
 188         self.assertEqual('abc_de', sanitize_filename('abc/de', restricted=True))
 189         self.assertFalse('/' in sanitize_filename('abc/de///', restricted=True))
 190
 191         self.assertEqual('abc_de', sanitize_filename('abc/<>\\*|de', restricted=True))
 192         self.assertEqual('xxx', sanitize_filename('xxx/<>\\*|', restricted=True))
 193         self.assertEqual('yes_no', sanitize_filename('yes? no', restricted=True))
 194         self.assertEqual('this_-_that', sanitize_filename('this: that', restricted=True))
 195
 196         tests = 'aäb\u4e2d\u56fd\u7684c'
 197         self.assertEqual(sanitize_filename(tests, restricted=True), 'aab_c')
 198         self.assertTrue(sanitize_filename('\xf6', restricted=True) != '')  # No empty filename
 199
 200         forbidden = '"\0\\/&!: \'\t\n()[]{}$;`^,#'
 201         for fc in forbidden:
 202             for fbc in forbidden:
 203                 self.assertTrue(fbc not in sanitize_filename(fc, restricted=True))
 204
 205         # Handle a common case more neatly
 206         self.assertEqual(sanitize_filename('\u5927\u58f0\u5e26 - Song', restricted=True), 'Song')
 207         self.assertEqual(sanitize_filename('\u603b\u7edf: Speech', restricted=True), 'Speech')
 208         # .. but make sure the file name is never empty
 209         self.assertTrue(sanitize_filename('-', restricted=True) != '')
 210         self.assertTrue(sanitize_filename(':', restricted=True) != '')
 211
 212         self.assertEqual(sanitize_filename(
 213             'ÂÃÄÀÁÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖŐØŒÙÚÛÜŰÝÞßàáâãäåæçèéêëìíîïðñòóôõöőøœùúûüűýþÿ', restricted=True),
 214             'AAAAAAAECEEEEIIIIDNOOOOOOOOEUUUUUYTHssaaaaaaaeceeeeiiiionooooooooeuuuuuythy')
 215
 216     def test_sanitize_ids(self):
 217         self.assertEqual(sanitize_filename('_n_cd26wFpw', is_id=True), '_n_cd26wFpw')
 218         self.assertEqual(sanitize_filename('_BD_eEpuzXw', is_id=True), '_BD_eEpuzXw')
 219         self.assertEqual(sanitize_filename('N0Y__7-UOdI', is_id=True), 'N0Y__7-UOdI')
 220
 221     def test_sanitize_path(self):
 222         with unittest.mock.patch('sys.platform', 'win32'):
 223             self._test_sanitize_path()
 224
 225     def _test_sanitize_path(self):
 226         self.assertEqual(sanitize_path('abc'), 'abc')
 227         self.assertEqual(sanitize_path('abc/def'), 'abc\\def')
 228         self.assertEqual(sanitize_path('abc\\def'), 'abc\\def')
 229         self.assertEqual(sanitize_path('abc|def'), 'abc#def')
 230         self.assertEqual(sanitize_path('<>:"|?*'), '#######')
 231         self.assertEqual(sanitize_path('C:/abc/def'), 'C:\\abc\\def')
 232         self.assertEqual(sanitize_path('C?:/abc/def'), 'C##\\abc\\def')
 233
 234         self.assertEqual(sanitize_path('\\\\?\\UNC\\ComputerName\\abc'), '\\\\?\\UNC\\ComputerName\\abc')
 235         self.assertEqual(sanitize_path('\\\\?\\UNC/ComputerName/abc'), '\\\\?\\UNC\\ComputerName\\abc')
 236
 237         self.assertEqual(sanitize_path('\\\\?\\C:\\abc'), '\\\\?\\C:\\abc')
 238         self.assertEqual(sanitize_path('\\\\?\\C:/abc'), '\\\\?\\C:\\abc')
 239         self.assertEqual(sanitize_path('\\\\?\\C:\\ab?c\\de:f'), '\\\\?\\C:\\ab#c\\de#f')
 240         self.assertEqual(sanitize_path('\\\\?\\C:\\abc'), '\\\\?\\C:\\abc')
 241
 242         self.assertEqual(
 243             sanitize_path('youtube/%(uploader)s/%(autonumber)s-%(title)s-%(upload_date)s.%(ext)s'),
 244             'youtube\\%(uploader)s\\%(autonumber)s-%(title)s-%(upload_date)s.%(ext)s')
 245
 246         self.assertEqual(
 247             sanitize_path('youtube/TheWreckingYard ./00001-Not bad, Especially for Free! (1987 Yamaha 700)-20141116.mp4.part'),
 248             'youtube\\TheWreckingYard #\\00001-Not bad, Especially for Free! (1987 Yamaha 700)-20141116.mp4.part')
 249         self.assertEqual(sanitize_path('abc/def...'), 'abc\\def..#')
 250         self.assertEqual(sanitize_path('abc.../def'), 'abc..#\\def')
 251         self.assertEqual(sanitize_path('abc.../def...'), 'abc..#\\def..#')
 252
 253         self.assertEqual(sanitize_path('../abc'), '..\\abc')
 254         self.assertEqual(sanitize_path('../../abc'), '..\\..\\abc')
 255         self.assertEqual(sanitize_path('./abc'), 'abc')
 256         self.assertEqual(sanitize_path('./../abc'), '..\\abc')
 257
 258         self.assertEqual(sanitize_path('\\abc'), '\\abc')
 259         self.assertEqual(sanitize_path('C:abc'), 'C:abc')
 260         self.assertEqual(sanitize_path('C:abc\\..\\'), 'C:..')
 261         self.assertEqual(sanitize_path('C:\\abc:%(title)s.%(ext)s'), 'C:\\abc#%(title)s.%(ext)s')
 262
 263     def test_sanitize_url(self):
 264         self.assertEqual(sanitize_url('//foo.bar'), 'http://foo.bar')
 265         self.assertEqual(sanitize_url('httpss://foo.bar'), 'https://foo.bar')
 266         self.assertEqual(sanitize_url('rmtps://foo.bar'), 'rtmps://foo.bar')
 267         self.assertEqual(sanitize_url('https://foo.bar'), 'https://foo.bar')
 268         self.assertEqual(sanitize_url('foo bar'), 'foo bar')
 269
 270     def test_expand_path(self):
 271         def env(var):
 272             return f'%{var}%' if sys.platform == 'win32' else f'${var}'
 273
 274         os.environ['yt_dlp_EXPATH_PATH'] = 'expanded'
 275         self.assertEqual(expand_path(env('yt_dlp_EXPATH_PATH')), 'expanded')
 276
 277         old_home = os.environ.get('HOME')
 278         test_str = R'C:\Documents and Settings\тест\Application Data'
 279         try:
 280             os.environ['HOME'] = test_str
 281             self.assertEqual(expand_path(env('HOME')), os.getenv('HOME'))
 282             self.assertEqual(expand_path('~'), os.getenv('HOME'))
 283             self.assertEqual(
 284                 expand_path('~/{}'.format(env('yt_dlp_EXPATH_PATH'))),
 285                 '{}/expanded'.format(os.getenv('HOME')))
 286         finally:
 287             os.environ['HOME'] = old_home or ''
 288
 289     _uncommon_extensions = [
 290         ('exe', 'abc.exe.ext'),
 291         ('de', 'abc.de.ext'),
 292         ('../.mp4', None),
 293         ('..\\.mp4', None),
 294     ]
 295
 296     def test_prepend_extension(self):
 297         self.assertEqual(prepend_extension('abc.ext', 'temp'), 'abc.temp.ext')
 298         self.assertEqual(prepend_extension('abc.ext', 'temp', 'ext'), 'abc.temp.ext')
 299         self.assertEqual(prepend_extension('abc.unexpected_ext', 'temp', 'ext'), 'abc.unexpected_ext.temp')
 300         self.assertEqual(prepend_extension('abc', 'temp'), 'abc.temp')
 301         self.assertEqual(prepend_extension('.abc', 'temp'), '.abc.temp')
 302         self.assertEqual(prepend_extension('.abc.ext', 'temp'), '.abc.temp.ext')
 303
 304         # Test uncommon extensions
 305         self.assertEqual(prepend_extension('abc.ext', 'bin'), 'abc.bin.ext')
 306         for ext, result in self._uncommon_extensions:
 307             with self.assertRaises(_UnsafeExtensionError):
 308                 prepend_extension('abc', ext)
 309             if result:
 310                 self.assertEqual(prepend_extension('abc.ext', ext, 'ext'), result)
 311             else:
 312                 with self.assertRaises(_UnsafeExtensionError):
 313                     prepend_extension('abc.ext', ext, 'ext')
 314             with self.assertRaises(_UnsafeExtensionError):
 315                 prepend_extension('abc.unexpected_ext', ext, 'ext')
 316
 317     def test_replace_extension(self):
 318         self.assertEqual(replace_extension('abc.ext', 'temp'), 'abc.temp')
 319         self.assertEqual(replace_extension('abc.ext', 'temp', 'ext'), 'abc.temp')
 320         self.assertEqual(replace_extension('abc.unexpected_ext', 'temp', 'ext'), 'abc.unexpected_ext.temp')
 321         self.assertEqual(replace_extension('abc', 'temp'), 'abc.temp')
 322         self.assertEqual(replace_extension('.abc', 'temp'), '.abc.temp')
 323         self.assertEqual(replace_extension('.abc.ext', 'temp'), '.abc.temp')
 324
 325         # Test uncommon extensions
 326         self.assertEqual(replace_extension('abc.ext', 'bin'), 'abc.unknown_video')
 327         for ext, _ in self._uncommon_extensions:
 328             with self.assertRaises(_UnsafeExtensionError):
 329                 replace_extension('abc', ext)
 330             with self.assertRaises(_UnsafeExtensionError):
 331                 replace_extension('abc.ext', ext, 'ext')
 332             with self.assertRaises(_UnsafeExtensionError):
 333                 replace_extension('abc.unexpected_ext', ext, 'ext')
 334
 335     def test_subtitles_filename(self):
 336         self.assertEqual(subtitles_filename('abc.ext', 'en', 'vtt'), 'abc.en.vtt')
 337         self.assertEqual(subtitles_filename('abc.ext', 'en', 'vtt', 'ext'), 'abc.en.vtt')
 338         self.assertEqual(subtitles_filename('abc.unexpected_ext', 'en', 'vtt', 'ext'), 'abc.unexpected_ext.en.vtt')
 339
 340     def test_remove_start(self):
 341         self.assertEqual(remove_start(None, 'A - '), None)
 342         self.assertEqual(remove_start('A - B', 'A - '), 'B')
 343         self.assertEqual(remove_start('B - A', 'A - '), 'B - A')
 344         self.assertEqual(remove_start('non-empty', ''), 'non-empty')
 345
 346     def test_remove_end(self):
 347         self.assertEqual(remove_end(None, ' - B'), None)
 348         self.assertEqual(remove_end('A - B', ' - B'), 'A')
 349         self.assertEqual(remove_end('B - A', ' - B'), 'B - A')
 350         self.assertEqual(remove_end('non-empty', ''), 'non-empty')
 351
 352     def test_remove_quotes(self):
 353         self.assertEqual(remove_quotes(None), None)
 354         self.assertEqual(remove_quotes('"'), '"')
 355         self.assertEqual(remove_quotes("'"), "'")
 356         self.assertEqual(remove_quotes(';'), ';')
 357         self.assertEqual(remove_quotes('";'), '";')
 358         self.assertEqual(remove_quotes('""'), '')
 359         self.assertEqual(remove_quotes('";"'), ';')
 360
 361     def test_ordered_set(self):
 362         self.assertEqual(orderedSet([1, 1, 2, 3, 4, 4, 5, 6, 7, 3, 5]), [1, 2, 3, 4, 5, 6, 7])
 363         self.assertEqual(orderedSet([]), [])
 364         self.assertEqual(orderedSet([1]), [1])
 365         # keep the list ordered
 366         self.assertEqual(orderedSet([135, 1, 1, 1]), [135, 1])
 367
 368     def test_unescape_html(self):
 369         self.assertEqual(unescapeHTML('%20;'), '%20;')
 370         self.assertEqual(unescapeHTML('&#x2F;'), '/')
 371         self.assertEqual(unescapeHTML('&#47;'), '/')
 372         self.assertEqual(unescapeHTML('&eacute;'), 'é')
 373         self.assertEqual(unescapeHTML('&#2013266066;'), '&#2013266066;')
 374         self.assertEqual(unescapeHTML('&a&quot;'), '&a"')
 375         # HTML5 entities
 376         self.assertEqual(unescapeHTML('&period;&apos;'), '.\'')
 377
 378     def test_date_from_str(self):
 379         self.assertEqual(date_from_str('yesterday'), date_from_str('now-1day'))
 380         self.assertEqual(date_from_str('now+7day'), date_from_str('now+1week'))
 381         self.assertEqual(date_from_str('now+14day'), date_from_str('now+2week'))
 382         self.assertEqual(date_from_str('20200229+365day'), date_from_str('20200229+1year'))
 383         self.assertEqual(date_from_str('20210131+28day'), date_from_str('20210131+1month'))
 384
 385     def test_datetime_from_str(self):
 386         self.assertEqual(datetime_from_str('yesterday', precision='day'), datetime_from_str('now-1day', precision='auto'))
 387         self.assertEqual(datetime_from_str('now+7day', precision='day'), datetime_from_str('now+1week', precision='auto'))
 388         self.assertEqual(datetime_from_str('now+14day', precision='day'), datetime_from_str('now+2week', precision='auto'))
 389         self.assertEqual(datetime_from_str('20200229+365day', precision='day'), datetime_from_str('20200229+1year', precision='auto'))
 390         self.assertEqual(datetime_from_str('20210131+28day', precision='day'), datetime_from_str('20210131+1month', precision='auto'))
 391         self.assertEqual(datetime_from_str('20210131+59day', precision='day'), datetime_from_str('20210131+2month', precision='auto'))
 392         self.assertEqual(datetime_from_str('now+1day', precision='hour'), datetime_from_str('now+24hours', precision='auto'))
 393         self.assertEqual(datetime_from_str('now+23hours', precision='hour'), datetime_from_str('now+23hours', precision='auto'))
 394
 395     def test_daterange(self):
 396         _20century = DateRange('19000101', '20000101')
 397         self.assertFalse('17890714' in _20century)
 398         _ac = DateRange('00010101')
 399         self.assertTrue('19690721' in _ac)
 400         _firstmilenium = DateRange(end='10000101')
 401         self.assertTrue('07110427' in _firstmilenium)
 402
 403     def test_unified_dates(self):
 404         self.assertEqual(unified_strdate('December 21, 2010'), '20101221')
 405         self.assertEqual(unified_strdate('8/7/2009'), '20090708')
 406         self.assertEqual(unified_strdate('Dec 14, 2012'), '20121214')
 407         self.assertEqual(unified_strdate('2012/10/11 01:56:38 +0000'), '20121011')
 408         self.assertEqual(unified_strdate('1968 12 10'), '19681210')
 409         self.assertEqual(unified_strdate('1968-12-10'), '19681210')
 410         self.assertEqual(unified_strdate('31-07-2022 20:00'), '20220731')
 411         self.assertEqual(unified_strdate('28/01/2014 21:00:00 +0100'), '20140128')
 412         self.assertEqual(
 413             unified_strdate('11/26/2014 11:30:00 AM PST', day_first=False),
 414             '20141126')
 415         self.assertEqual(
 416             unified_strdate('2/2/2015 6:47:40 PM', day_first=False),
 417             '20150202')
 418         self.assertEqual(unified_strdate('Feb 14th 2016 5:45PM'), '20160214')
 419         self.assertEqual(unified_strdate('25-09-2014'), '20140925')
 420         self.assertEqual(unified_strdate('27.02.2016 17:30'), '20160227')
 421         self.assertEqual(unified_strdate('UNKNOWN DATE FORMAT'), None)
 422         self.assertEqual(unified_strdate('Feb 7, 2016 at 6:35 pm'), '20160207')
 423         self.assertEqual(unified_strdate('July 15th, 2013'), '20130715')
 424         self.assertEqual(unified_strdate('September 1st, 2013'), '20130901')
 425         self.assertEqual(unified_strdate('Sep 2nd, 2013'), '20130902')
 426         self.assertEqual(unified_strdate('November 3rd, 2019'), '20191103')
 427         self.assertEqual(unified_strdate('October 23rd, 2005'), '20051023')
 428
 429     def test_unified_timestamps(self):
 430         self.assertEqual(unified_timestamp('December 21, 2010'), 1292889600)
 431         self.assertEqual(unified_timestamp('8/7/2009'), 1247011200)
 432         self.assertEqual(unified_timestamp('Dec 14, 2012'), 1355443200)
 433         self.assertEqual(unified_timestamp('2012/10/11 01:56:38 +0000'), 1349920598)
 434         self.assertEqual(unified_timestamp('1968 12 10'), -33436800)
 435         self.assertEqual(unified_timestamp('1968-12-10'), -33436800)
 436         self.assertEqual(unified_timestamp('28/01/2014 21:00:00 +0100'), 1390939200)
 437         self.assertEqual(
 438             unified_timestamp('11/26/2014 11:30:00 AM PST', day_first=False),
 439             1417001400)
 440         self.assertEqual(
 441             unified_timestamp('2/2/2015 6:47:40 PM', day_first=False),
 442             1422902860)
 443         self.assertEqual(unified_timestamp('Feb 14th 2016 5:45PM'), 1455471900)
 444         self.assertEqual(unified_timestamp('25-09-2014'), 1411603200)
 445         self.assertEqual(unified_timestamp('27.02.2016 17:30'), 1456594200)
 446         self.assertEqual(unified_timestamp('UNKNOWN DATE FORMAT'), None)
 447         self.assertEqual(unified_timestamp('May 16, 2016 11:15 PM'), 1463440500)
 448         self.assertEqual(unified_timestamp('Feb 7, 2016 at 6:35 pm'), 1454870100)
 449         self.assertEqual(unified_timestamp('2017-03-30T17:52:41Q'), 1490896361)
 450         self.assertEqual(unified_timestamp('Sep 11, 2013 | 5:49 AM'), 1378878540)
 451         self.assertEqual(unified_timestamp('December 15, 2017 at 7:49 am'), 1513324140)
 452         self.assertEqual(unified_timestamp('2018-03-14T08:32:43.1493874+00:00'), 1521016363)
 453         self.assertEqual(unified_timestamp('Sunday, 26 Nov 2006, 19:00'), 1164567600)
 454         self.assertEqual(unified_timestamp('wed, aug 16, 2008, 12:00pm'), 1218931200)
 455
 456         self.assertEqual(unified_timestamp('December 31 1969 20:00:01 EDT'), 1)
 457         self.assertEqual(unified_timestamp('Wednesday 31 December 1969 18:01:26 MDT'), 86)
 458         self.assertEqual(unified_timestamp('12/31/1969 20:01:18 EDT', False), 78)
 459
 460     def test_determine_ext(self):
 461         self.assertEqual(determine_ext('http://example.com/foo/bar.mp4/?download'), 'mp4')
 462         self.assertEqual(determine_ext('http://example.com/foo/bar/?download', None), None)
 463         self.assertEqual(determine_ext('http://example.com/foo/bar.nonext/?download', None), None)
 464         self.assertEqual(determine_ext('http://example.com/foo/bar/mp4?download', None), None)
 465         self.assertEqual(determine_ext('http://example.com/foo/bar.m3u8//?download'), 'm3u8')
 466         self.assertEqual(determine_ext('foobar', None), None)
 467
 468     def test_find_xpath_attr(self):
 469         testxml = '''<root>
 470             <node/>
 471             <node x="a"/>
 472             <node x="a" y="c" />
 473             <node x="b" y="d" />
 474             <node x="" />
 475         </root>'''
 476         doc = compat_etree_fromstring(testxml)
 477
 478         self.assertEqual(find_xpath_attr(doc, './/fourohfour', 'n'), None)
 479         self.assertEqual(find_xpath_attr(doc, './/fourohfour', 'n', 'v'), None)
 480         self.assertEqual(find_xpath_attr(doc, './/node', 'n'), None)
 481         self.assertEqual(find_xpath_attr(doc, './/node', 'n', 'v'), None)
 482         self.assertEqual(find_xpath_attr(doc, './/node', 'x'), doc[1])
 483         self.assertEqual(find_xpath_attr(doc, './/node', 'x', 'a'), doc[1])
 484         self.assertEqual(find_xpath_attr(doc, './/node', 'x', 'b'), doc[3])
 485         self.assertEqual(find_xpath_attr(doc, './/node', 'y'), doc[2])
 486         self.assertEqual(find_xpath_attr(doc, './/node', 'y', 'c'), doc[2])
 487         self.assertEqual(find_xpath_attr(doc, './/node', 'y', 'd'), doc[3])
 488         self.assertEqual(find_xpath_attr(doc, './/node', 'x', ''), doc[4])
 489
 490     def test_xpath_with_ns(self):
 491         testxml = '''<root xmlns:media="http://example.com/">
 492             <media:song>
 493                 <media:author>The Author</media:author>
 494                 <url>http://server.com/download.mp3</url>
 495             </media:song>
 496         </root>'''
 497         doc = compat_etree_fromstring(testxml)
 498         find = lambda p: doc.find(xpath_with_ns(p, {'media': 'http://example.com/'}))
 499         self.assertTrue(find('media:song') is not None)
 500         self.assertEqual(find('media:song/media:author').text, 'The Author')
 501         self.assertEqual(find('media:song/url').text, 'http://server.com/download.mp3')
 502
 503     def test_xpath_element(self):
 504         doc = xml.etree.ElementTree.Element('root')
 505         div = xml.etree.ElementTree.SubElement(doc, 'div')
 506         p = xml.etree.ElementTree.SubElement(div, 'p')
 507         p.text = 'Foo'
 508         self.assertEqual(xpath_element(doc, 'div/p'), p)
 509         self.assertEqual(xpath_element(doc, ['div/p']), p)
 510         self.assertEqual(xpath_element(doc, ['div/bar', 'div/p']), p)
 511         self.assertEqual(xpath_element(doc, 'div/bar', default='default'), 'default')
 512         self.assertEqual(xpath_element(doc, ['div/bar'], default='default'), 'default')
 513         self.assertTrue(xpath_element(doc, 'div/bar') is None)
 514         self.assertTrue(xpath_element(doc, ['div/bar']) is None)
 515         self.assertTrue(xpath_element(doc, ['div/bar'], 'div/baz') is None)
 516         self.assertRaises(ExtractorError, xpath_element, doc, 'div/bar', fatal=True)
 517         self.assertRaises(ExtractorError, xpath_element, doc, ['div/bar'], fatal=True)
 518         self.assertRaises(ExtractorError, xpath_element, doc, ['div/bar', 'div/baz'], fatal=True)
 519
 520     def test_xpath_text(self):
 521         testxml = '''<root>
 522             <div>
 523                 <p>Foo</p>
 524             </div>
 525         </root>'''
 526         doc = compat_etree_fromstring(testxml)
 527         self.assertEqual(xpath_text(doc, 'div/p'), 'Foo')
 528         self.assertEqual(xpath_text(doc, 'div/bar', default='default'), 'default')
 529         self.assertTrue(xpath_text(doc, 'div/bar') is None)
 530         self.assertRaises(ExtractorError, xpath_text, doc, 'div/bar', fatal=True)
 531
 532     def test_xpath_attr(self):
 533         testxml = '''<root>
 534             <div>
 535                 <p x="a">Foo</p>
 536             </div>
 537         </root>'''
 538         doc = compat_etree_fromstring(testxml)
 539         self.assertEqual(xpath_attr(doc, 'div/p', 'x'), 'a')
 540         self.assertEqual(xpath_attr(doc, 'div/bar', 'x'), None)
 541         self.assertEqual(xpath_attr(doc, 'div/p', 'y'), None)
 542         self.assertEqual(xpath_attr(doc, 'div/bar', 'x', default='default'), 'default')
 543         self.assertEqual(xpath_attr(doc, 'div/p', 'y', default='default'), 'default')
 544         self.assertRaises(ExtractorError, xpath_attr, doc, 'div/bar', 'x', fatal=True)
 545         self.assertRaises(ExtractorError, xpath_attr, doc, 'div/p', 'y', fatal=True)
 546
 547     def test_smuggle_url(self):
 548         data = {'ö': 'ö', 'abc': [3]}
 549         url = 'https://foo.bar/baz?x=y#a'
 550         smug_url = smuggle_url(url, data)
 551         unsmug_url, unsmug_data = unsmuggle_url(smug_url)
 552         self.assertEqual(url, unsmug_url)
 553         self.assertEqual(data, unsmug_data)
 554
 555         res_url, res_data = unsmuggle_url(url)
 556         self.assertEqual(res_url, url)
 557         self.assertEqual(res_data, None)
 558
 559         smug_url = smuggle_url(url, {'a': 'b'})
 560         smug_smug_url = smuggle_url(smug_url, {'c': 'd'})
 561         res_url, res_data = unsmuggle_url(smug_smug_url)
 562         self.assertEqual(res_url, url)
 563         self.assertEqual(res_data, {'a': 'b', 'c': 'd'})
 564
 565     def test_shell_quote(self):
 566         args = ['ffmpeg', '-i', 'ñ€ß\'.mp4']
 567         self.assertEqual(
 568             shell_quote(args),
 569             """ffmpeg -i 'ñ€ß'"'"'.mp4'""" if os.name != 'nt' else '''ffmpeg -i "ñ€ß'.mp4"''')
 570
 571     def test_float_or_none(self):
 572         self.assertEqual(float_or_none('42.42'), 42.42)
 573         self.assertEqual(float_or_none('42'), 42.0)
 574         self.assertEqual(float_or_none(''), None)
 575         self.assertEqual(float_or_none(None), None)
 576         self.assertEqual(float_or_none([]), None)
 577         self.assertEqual(float_or_none(set()), None)
 578
 579     def test_int_or_none(self):
 580         self.assertEqual(int_or_none('42'), 42)
 581         self.assertEqual(int_or_none(''), None)
 582         self.assertEqual(int_or_none(None), None)
 583         self.assertEqual(int_or_none([]), None)
 584         self.assertEqual(int_or_none(set()), None)
 585
 586     def test_str_to_int(self):
 587         self.assertEqual(str_to_int('123,456'), 123456)
 588         self.assertEqual(str_to_int('123.456'), 123456)
 589         self.assertEqual(str_to_int(523), 523)
 590         self.assertEqual(str_to_int('noninteger'), None)
 591         self.assertEqual(str_to_int([]), None)
 592
 593     def test_url_basename(self):
 594         self.assertEqual(url_basename('http://foo.de/'), '')
 595         self.assertEqual(url_basename('http://foo.de/bar/baz'), 'baz')
 596         self.assertEqual(url_basename('http://foo.de/bar/baz?x=y'), 'baz')
 597         self.assertEqual(url_basename('http://foo.de/bar/baz#x=y'), 'baz')
 598         self.assertEqual(url_basename('http://foo.de/bar/baz/'), 'baz')
 599         self.assertEqual(
 600             url_basename('http://media.w3.org/2010/05/sintel/trailer.mp4'),
 601             'trailer.mp4')
 602
 603     def test_base_url(self):
 604         self.assertEqual(base_url('http://foo.de/'), 'http://foo.de/')
 605         self.assertEqual(base_url('http://foo.de/bar'), 'http://foo.de/')
 606         self.assertEqual(base_url('http://foo.de/bar/'), 'http://foo.de/bar/')
 607         self.assertEqual(base_url('http://foo.de/bar/baz'), 'http://foo.de/bar/')
 608         self.assertEqual(base_url('http://foo.de/bar/baz?x=z/x/c'), 'http://foo.de/bar/')
 609         self.assertEqual(base_url('http://foo.de/bar/baz&x=z&w=y/x/c'), 'http://foo.de/bar/baz&x=z&w=y/x/')
 610
 611     def test_urljoin(self):
 612         self.assertEqual(urljoin('http://foo.de/', '/a/b/c.txt'), 'http://foo.de/a/b/c.txt')
 613         self.assertEqual(urljoin(b'http://foo.de/', '/a/b/c.txt'), 'http://foo.de/a/b/c.txt')
 614         self.assertEqual(urljoin('http://foo.de/', b'/a/b/c.txt'), 'http://foo.de/a/b/c.txt')
 615         self.assertEqual(urljoin(b'http://foo.de/', b'/a/b/c.txt'), 'http://foo.de/a/b/c.txt')
 616         self.assertEqual(urljoin('//foo.de/', '/a/b/c.txt'), '//foo.de/a/b/c.txt')
 617         self.assertEqual(urljoin('http://foo.de/', 'a/b/c.txt'), 'http://foo.de/a/b/c.txt')
 618         self.assertEqual(urljoin('http://foo.de', '/a/b/c.txt'), 'http://foo.de/a/b/c.txt')
 619         self.assertEqual(urljoin('http://foo.de', 'a/b/c.txt'), 'http://foo.de/a/b/c.txt')
 620         self.assertEqual(urljoin('http://foo.de/', 'http://foo.de/a/b/c.txt'), 'http://foo.de/a/b/c.txt')
 621         self.assertEqual(urljoin('http://foo.de/', '//foo.de/a/b/c.txt'), '//foo.de/a/b/c.txt')
 622         self.assertEqual(urljoin(None, 'http://foo.de/a/b/c.txt'), 'http://foo.de/a/b/c.txt')
 623         self.assertEqual(urljoin(None, '//foo.de/a/b/c.txt'), '//foo.de/a/b/c.txt')
 624         self.assertEqual(urljoin('', 'http://foo.de/a/b/c.txt'), 'http://foo.de/a/b/c.txt')
 625         self.assertEqual(urljoin(['foobar'], 'http://foo.de/a/b/c.txt'), 'http://foo.de/a/b/c.txt')
 626         self.assertEqual(urljoin('http://foo.de/', None), None)
 627         self.assertEqual(urljoin('http://foo.de/', ''), None)
 628         self.assertEqual(urljoin('http://foo.de/', ['foobar']), None)
 629         self.assertEqual(urljoin('http://foo.de/a/b/c.txt', '.././../d.txt'), 'http://foo.de/d.txt')
 630         self.assertEqual(urljoin('http://foo.de/a/b/c.txt', 'rtmp://foo.de'), 'rtmp://foo.de')
 631         self.assertEqual(urljoin(None, 'rtmp://foo.de'), 'rtmp://foo.de')
 632
 633     def test_url_or_none(self):
 634         self.assertEqual(url_or_none(None), None)
 635         self.assertEqual(url_or_none(''), None)
 636         self.assertEqual(url_or_none('foo'), None)
 637         self.assertEqual(url_or_none('http://foo.de'), 'http://foo.de')
 638         self.assertEqual(url_or_none('https://foo.de'), 'https://foo.de')
 639         self.assertEqual(url_or_none('http$://foo.de'), None)
 640         self.assertEqual(url_or_none('http://foo.de'), 'http://foo.de')
 641         self.assertEqual(url_or_none('//foo.de'), '//foo.de')
 642         self.assertEqual(url_or_none('s3://foo.de'), None)
 643         self.assertEqual(url_or_none('rtmpte://foo.de'), 'rtmpte://foo.de')
 644         self.assertEqual(url_or_none('mms://foo.de'), 'mms://foo.de')
 645         self.assertEqual(url_or_none('rtspu://foo.de'), 'rtspu://foo.de')
 646         self.assertEqual(url_or_none('ftps://foo.de'), 'ftps://foo.de')
 647
 648     def test_parse_age_limit(self):
 649         self.assertEqual(parse_age_limit(None), None)
 650         self.assertEqual(parse_age_limit(False), None)
 651         self.assertEqual(parse_age_limit('invalid'), None)
 652         self.assertEqual(parse_age_limit(0), 0)
 653         self.assertEqual(parse_age_limit(18), 18)
 654         self.assertEqual(parse_age_limit(21), 21)
 655         self.assertEqual(parse_age_limit(22), None)
 656         self.assertEqual(parse_age_limit('18'), 18)
 657         self.assertEqual(parse_age_limit('18+'), 18)
 658         self.assertEqual(parse_age_limit('PG-13'), 13)
 659         self.assertEqual(parse_age_limit('TV-14'), 14)
 660         self.assertEqual(parse_age_limit('TV-MA'), 17)
 661         self.assertEqual(parse_age_limit('TV14'), 14)
 662         self.assertEqual(parse_age_limit('TV_G'), 0)
 663
 664     def test_parse_duration(self):
 665         self.assertEqual(parse_duration(None), None)
 666         self.assertEqual(parse_duration(False), None)
 667         self.assertEqual(parse_duration('invalid'), None)
 668         self.assertEqual(parse_duration('1'), 1)
 669         self.assertEqual(parse_duration('1337:12'), 80232)
 670         self.assertEqual(parse_duration('9:12:43'), 33163)
 671         self.assertEqual(parse_duration('12:00'), 720)
 672         self.assertEqual(parse_duration('00:01:01'), 61)
 673         self.assertEqual(parse_duration('x:y'), None)
 674         self.assertEqual(parse_duration('3h11m53s'), 11513)
 675         self.assertEqual(parse_duration('3h 11m 53s'), 11513)
 676         self.assertEqual(parse_duration('3 hours 11 minutes 53 seconds'), 11513)
 677         self.assertEqual(parse_duration('3 hours 11 mins 53 secs'), 11513)
 678         self.assertEqual(parse_duration('3 hours, 11 minutes, 53 seconds'), 11513)
 679         self.assertEqual(parse_duration('3 hours, 11 mins, 53 secs'), 11513)
 680         self.assertEqual(parse_duration('62m45s'), 3765)
 681         self.assertEqual(parse_duration('6m59s'), 419)
 682         self.assertEqual(parse_duration('49s'), 49)
 683         self.assertEqual(parse_duration('0h0m0s'), 0)
 684         self.assertEqual(parse_duration('0m0s'), 0)
 685         self.assertEqual(parse_duration('0s'), 0)
 686         self.assertEqual(parse_duration('01:02:03.05'), 3723.05)
 687         self.assertEqual(parse_duration('T30M38S'), 1838)
 688         self.assertEqual(parse_duration('5 s'), 5)
 689         self.assertEqual(parse_duration('3 min'), 180)
 690         self.assertEqual(parse_duration('2.5 hours'), 9000)
 691         self.assertEqual(parse_duration('02:03:04'), 7384)
 692         self.assertEqual(parse_duration('01:02:03:04'), 93784)
 693         self.assertEqual(parse_duration('1 hour 3 minutes'), 3780)
 694         self.assertEqual(parse_duration('87 Min.'), 5220)
 695         self.assertEqual(parse_duration('PT1H0.040S'), 3600.04)
 696         self.assertEqual(parse_duration('PT00H03M30SZ'), 210)
 697         self.assertEqual(parse_duration('P0Y0M0DT0H4M20.880S'), 260.88)
 698         self.assertEqual(parse_duration('01:02:03:050'), 3723.05)
 699         self.assertEqual(parse_duration('103:050'), 103.05)
 700         self.assertEqual(parse_duration('1HR 3MIN'), 3780)
 701         self.assertEqual(parse_duration('2hrs 3mins'), 7380)
 702
 703     def test_fix_xml_ampersands(self):
 704         self.assertEqual(
 705             fix_xml_ampersands('"&x=y&z=a'), '"&amp;x=y&amp;z=a')
 706         self.assertEqual(
 707             fix_xml_ampersands('"&amp;x=y&wrong;&z=a'),
 708             '"&amp;x=y&amp;wrong;&amp;z=a')
 709         self.assertEqual(
 710             fix_xml_ampersands('&amp;&apos;&gt;&lt;&quot;'),
 711             '&amp;&apos;&gt;&lt;&quot;')
 712         self.assertEqual(
 713             fix_xml_ampersands('&#1234;&#x1abC;'), '&#1234;&#x1abC;')
 714         self.assertEqual(fix_xml_ampersands('&#&#'), '&amp;#&amp;#')
 715
 716     def test_paged_list(self):
 717         def testPL(size, pagesize, sliceargs, expected):
 718             def get_page(pagenum):
 719                 firstid = pagenum * pagesize
 720                 upto = min(size, pagenum * pagesize + pagesize)
 721                 yield from range(firstid, upto)
 722
 723             pl = OnDemandPagedList(get_page, pagesize)
 724             got = pl.getslice(*sliceargs)
 725             self.assertEqual(got, expected)
 726
 727             iapl = InAdvancePagedList(get_page, size // pagesize + 1, pagesize)
 728             got = iapl.getslice(*sliceargs)
 729             self.assertEqual(got, expected)
 730
 731         testPL(5, 2, (), [0, 1, 2, 3, 4])
 732         testPL(5, 2, (1,), [1, 2, 3, 4])
 733         testPL(5, 2, (2,), [2, 3, 4])
 734         testPL(5, 2, (4,), [4])
 735         testPL(5, 2, (0, 3), [0, 1, 2])
 736         testPL(5, 2, (1, 4), [1, 2, 3])
 737         testPL(5, 2, (2, 99), [2, 3, 4])
 738         testPL(5, 2, (20, 99), [])
 739
 740     def test_read_batch_urls(self):
 741         f = io.StringIO('''\xef\xbb\xbf foo
 742             bar\r
 743             baz
 744             # More after this line\r
 745             ; or after this
 746             bam''')
 747         self.assertEqual(read_batch_urls(f), ['foo', 'bar', 'baz', 'bam'])
 748
 749     def test_urlencode_postdata(self):
 750         data = urlencode_postdata({'username': 'foo@bar.com', 'password': '1234'})
 751         self.assertTrue(isinstance(data, bytes))
 752
 753     def test_update_url_query(self):
 754         self.assertEqual(parse_qs(update_url_query(
 755             'http://example.com/path', {'quality': ['HD'], 'format': ['mp4']})),
 756             parse_qs('http://example.com/path?quality=HD&format=mp4'))
 757         self.assertEqual(parse_qs(update_url_query(
 758             'http://example.com/path', {'system': ['LINUX', 'WINDOWS']})),
 759             parse_qs('http://example.com/path?system=LINUX&system=WINDOWS'))
 760         self.assertEqual(parse_qs(update_url_query(
 761             'http://example.com/path', {'fields': 'id,formats,subtitles'})),
 762             parse_qs('http://example.com/path?fields=id,formats,subtitles'))
 763         self.assertEqual(parse_qs(update_url_query(
 764             'http://example.com/path', {'fields': ('id,formats,subtitles', 'thumbnails')})),
 765             parse_qs('http://example.com/path?fields=id,formats,subtitles&fields=thumbnails'))
 766         self.assertEqual(parse_qs(update_url_query(
 767             'http://example.com/path?manifest=f4m', {'manifest': []})),
 768             parse_qs('http://example.com/path'))
 769         self.assertEqual(parse_qs(update_url_query(
 770             'http://example.com/path?system=LINUX&system=WINDOWS', {'system': 'LINUX'})),
 771             parse_qs('http://example.com/path?system=LINUX'))
 772         self.assertEqual(parse_qs(update_url_query(
 773             'http://example.com/path', {'fields': b'id,formats,subtitles'})),
 774             parse_qs('http://example.com/path?fields=id,formats,subtitles'))
 775         self.assertEqual(parse_qs(update_url_query(
 776             'http://example.com/path', {'width': 1080, 'height': 720})),
 777             parse_qs('http://example.com/path?width=1080&height=720'))
 778         self.assertEqual(parse_qs(update_url_query(
 779             'http://example.com/path', {'bitrate': 5020.43})),
 780             parse_qs('http://example.com/path?bitrate=5020.43'))
 781         self.assertEqual(parse_qs(update_url_query(
 782             'http://example.com/path', {'test': '第二行тест'})),
 783             parse_qs('http://example.com/path?test=%E7%AC%AC%E4%BA%8C%E8%A1%8C%D1%82%D0%B5%D1%81%D1%82'))
 784
 785     def test_multipart_encode(self):
 786         self.assertEqual(
 787             multipart_encode({b'field': b'value'}, boundary='AAAAAA')[0],
 788             b'--AAAAAA\r\nContent-Disposition: form-data; name="field"\r\n\r\nvalue\r\n--AAAAAA--\r\n')
 789         self.assertEqual(
 790             multipart_encode({'欄位'.encode(): '值'.encode()}, boundary='AAAAAA')[0],
 791             b'--AAAAAA\r\nContent-Disposition: form-data; name="\xe6\xac\x84\xe4\xbd\x8d"\r\n\r\n\xe5\x80\xbc\r\n--AAAAAA--\r\n')
 792         self.assertRaises(
 793             ValueError, multipart_encode, {b'field': b'value'}, boundary='value')
 794
 795     def test_merge_dicts(self):
 796         self.assertEqual(merge_dicts({'a': 1}, {'b': 2}), {'a': 1, 'b': 2})
 797         self.assertEqual(merge_dicts({'a': 1}, {'a': 2}), {'a': 1})
 798         self.assertEqual(merge_dicts({'a': 1}, {'a': None}), {'a': 1})
 799         self.assertEqual(merge_dicts({'a': 1}, {'a': ''}), {'a': 1})
 800         self.assertEqual(merge_dicts({'a': 1}, {}), {'a': 1})
 801         self.assertEqual(merge_dicts({'a': None}, {'a': 1}), {'a': 1})
 802         self.assertEqual(merge_dicts({'a': ''}, {'a': 1}), {'a': ''})
 803         self.assertEqual(merge_dicts({'a': ''}, {'a': 'abc'}), {'a': 'abc'})
 804         self.assertEqual(merge_dicts({'a': None}, {'a': ''}, {'a': 'abc'}), {'a': 'abc'})
 805
 806     def test_encode_compat_str(self):
 807         self.assertEqual(encode_compat_str(b'\xd1\x82\xd0\xb5\xd1\x81\xd1\x82', 'utf-8'), 'тест')
 808         self.assertEqual(encode_compat_str('тест', 'utf-8'), 'тест')
 809
 810     def test_parse_iso8601(self):
 811         self.assertEqual(parse_iso8601('2014-03-23T23:04:26+0100'), 1395612266)
 812         self.assertEqual(parse_iso8601('2014-03-23T23:04:26-07:00'), 1395641066)
 813         self.assertEqual(parse_iso8601('2014-03-23T23:04:26', timezone=dt.timedelta(hours=-7)), 1395641066)
 814         self.assertEqual(parse_iso8601('2014-03-23T23:04:26', timezone=NO_DEFAULT), None)
 815         # default does not override timezone in date_str
 816         self.assertEqual(parse_iso8601('2014-03-23T23:04:26-07:00', timezone=dt.timedelta(hours=-10)), 1395641066)
 817         self.assertEqual(parse_iso8601('2014-03-23T22:04:26+0000'), 1395612266)
 818         self.assertEqual(parse_iso8601('2014-03-23T22:04:26Z'), 1395612266)
 819         self.assertEqual(parse_iso8601('2014-03-23T22:04:26.1234Z'), 1395612266)
 820         self.assertEqual(parse_iso8601('2015-09-29T08:27:31.727'), 1443515251)
 821         self.assertEqual(parse_iso8601('2015-09-29T08-27-31.727'), None)
 822
 823     def test_strip_jsonp(self):
 824         stripped = strip_jsonp('cb ([ {"id":"532cb",\n\n\n"x":\n3}\n]\n);')
 825         d = json.loads(stripped)
 826         self.assertEqual(d, [{'id': '532cb', 'x': 3}])
 827
 828         stripped = strip_jsonp('parseMetadata({"STATUS":"OK"})\n\n\n//epc')
 829         d = json.loads(stripped)
 830         self.assertEqual(d, {'STATUS': 'OK'})
 831
 832         stripped = strip_jsonp('ps.embedHandler({"status": "success"});')
 833         d = json.loads(stripped)
 834         self.assertEqual(d, {'status': 'success'})
 835
 836         stripped = strip_jsonp('window.cb && window.cb({"status": "success"});')
 837         d = json.loads(stripped)
 838         self.assertEqual(d, {'status': 'success'})
 839
 840         stripped = strip_jsonp('window.cb && cb({"status": "success"});')
 841         d = json.loads(stripped)
 842         self.assertEqual(d, {'status': 'success'})
 843
 844         stripped = strip_jsonp('({"status": "success"});')
 845         d = json.loads(stripped)
 846         self.assertEqual(d, {'status': 'success'})
 847
 848     def test_strip_or_none(self):
 849         self.assertEqual(strip_or_none(' abc'), 'abc')
 850         self.assertEqual(strip_or_none('abc '), 'abc')
 851         self.assertEqual(strip_or_none(' abc '), 'abc')
 852         self.assertEqual(strip_or_none('\tabc\t'), 'abc')
 853         self.assertEqual(strip_or_none('\n\tabc\n\t'), 'abc')
 854         self.assertEqual(strip_or_none('abc'), 'abc')
 855         self.assertEqual(strip_or_none(''), '')
 856         self.assertEqual(strip_or_none(None), None)
 857         self.assertEqual(strip_or_none(42), None)
 858         self.assertEqual(strip_or_none([]), None)
 859
 860     def test_uppercase_escape(self):
 861         self.assertEqual(uppercase_escape('aä'), 'aä')
 862         self.assertEqual(uppercase_escape('\\U0001d550'), '𝕐')
 863
 864     def test_lowercase_escape(self):
 865         self.assertEqual(lowercase_escape('aä'), 'aä')
 866         self.assertEqual(lowercase_escape('\\u0026'), '&')
 867
 868     def test_limit_length(self):
 869         self.assertEqual(limit_length(None, 12), None)
 870         self.assertEqual(limit_length('foo', 12), 'foo')
 871         self.assertTrue(
 872             limit_length('foo bar baz asd', 12).startswith('foo bar'))
 873         self.assertTrue('...' in limit_length('foo bar baz asd', 12))
 874
 875     def test_mimetype2ext(self):
 876         self.assertEqual(mimetype2ext(None), None)
 877         self.assertEqual(mimetype2ext('video/x-flv'), 'flv')
 878         self.assertEqual(mimetype2ext('application/x-mpegURL'), 'm3u8')
 879         self.assertEqual(mimetype2ext('text/vtt'), 'vtt')
 880         self.assertEqual(mimetype2ext('text/vtt;charset=utf-8'), 'vtt')
 881         self.assertEqual(mimetype2ext('text/html; charset=utf-8'), 'html')
 882         self.assertEqual(mimetype2ext('audio/x-wav'), 'wav')
 883         self.assertEqual(mimetype2ext('audio/x-wav;codec=pcm'), 'wav')
 884
 885     def test_month_by_name(self):
 886         self.assertEqual(month_by_name(None), None)
 887         self.assertEqual(month_by_name('December', 'en'), 12)
 888         self.assertEqual(month_by_name('décembre', 'fr'), 12)
 889         self.assertEqual(month_by_name('December'), 12)
 890         self.assertEqual(month_by_name('décembre'), None)
 891         self.assertEqual(month_by_name('Unknown', 'unknown'), None)
 892
 893     def test_parse_codecs(self):
 894         self.assertEqual(parse_codecs(''), {})
 895         self.assertEqual(parse_codecs('avc1.77.30, mp4a.40.2'), {
 896             'vcodec': 'avc1.77.30',
 897             'acodec': 'mp4a.40.2',
 898             'dynamic_range': None,
 899         })
 900         self.assertEqual(parse_codecs('mp4a.40.2'), {
 901             'vcodec': 'none',
 902             'acodec': 'mp4a.40.2',
 903             'dynamic_range': None,
 904         })
 905         self.assertEqual(parse_codecs('mp4a.40.5,avc1.42001e'), {
 906             'vcodec': 'avc1.42001e',
 907             'acodec': 'mp4a.40.5',
 908             'dynamic_range': None,
 909         })
 910         self.assertEqual(parse_codecs('avc3.640028'), {
 911             'vcodec': 'avc3.640028',
 912             'acodec': 'none',
 913             'dynamic_range': None,
 914         })
 915         self.assertEqual(parse_codecs(', h264,,newcodec,aac'), {
 916             'vcodec': 'h264',
 917             'acodec': 'aac',
 918             'dynamic_range': None,
 919         })
 920         self.assertEqual(parse_codecs('av01.0.05M.08'), {
 921             'vcodec': 'av01.0.05M.08',
 922             'acodec': 'none',
 923             'dynamic_range': None,
 924         })
 925         self.assertEqual(parse_codecs('vp9.2'), {
 926             'vcodec': 'vp9.2',
 927             'acodec': 'none',
 928             'dynamic_range': 'HDR10',
 929         })
 930         self.assertEqual(parse_codecs('vp09.02.50.10.01.09.18.09.00'), {
 931             'vcodec': 'vp09.02.50.10.01.09.18.09.00',
 932             'acodec': 'none',
 933             'dynamic_range': 'HDR10',
 934         })
 935         self.assertEqual(parse_codecs('av01.0.12M.10.0.110.09.16.09.0'), {
 936             'vcodec': 'av01.0.12M.10.0.110.09.16.09.0',
 937             'acodec': 'none',
 938             'dynamic_range': 'HDR10',
 939         })
 940         self.assertEqual(parse_codecs('dvhe'), {
 941             'vcodec': 'dvhe',
 942             'acodec': 'none',
 943             'dynamic_range': 'DV',
 944         })
 945         self.assertEqual(parse_codecs('fLaC'), {
 946             'vcodec': 'none',
 947             'acodec': 'flac',
 948             'dynamic_range': None,
 949         })
 950         self.assertEqual(parse_codecs('theora, vorbis'), {
 951             'vcodec': 'theora',
 952             'acodec': 'vorbis',
 953             'dynamic_range': None,
 954         })
 955         self.assertEqual(parse_codecs('unknownvcodec, unknownacodec'), {
 956             'vcodec': 'unknownvcodec',
 957             'acodec': 'unknownacodec',
 958         })
 959         self.assertEqual(parse_codecs('unknown'), {})
 960
 961     def test_escape_rfc3986(self):
 962         reserved = "!*'();:@&=+$,/?#[]"
 963         unreserved = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_.~'
 964         self.assertEqual(escape_rfc3986(reserved), reserved)
 965         self.assertEqual(escape_rfc3986(unreserved), unreserved)
 966         self.assertEqual(escape_rfc3986('тест'), '%D1%82%D0%B5%D1%81%D1%82')
 967         self.assertEqual(escape_rfc3986('%D1%82%D0%B5%D1%81%D1%82'), '%D1%82%D0%B5%D1%81%D1%82')
 968         self.assertEqual(escape_rfc3986('foo bar'), 'foo%20bar')
 969         self.assertEqual(escape_rfc3986('foo%20bar'), 'foo%20bar')
 970
 971     def test_normalize_url(self):
 972         self.assertEqual(
 973             normalize_url('http://wowza.imust.org/srv/vod/telemb/new/UPLOAD/UPLOAD/20224_IncendieHavré_FD.mp4'),
 974             'http://wowza.imust.org/srv/vod/telemb/new/UPLOAD/UPLOAD/20224_IncendieHavre%CC%81_FD.mp4',
 975         )
 976         self.assertEqual(
 977             normalize_url('http://www.ardmediathek.de/tv/Sturm-der-Liebe/Folge-2036-Zu-Mann-und-Frau-erklärt/Das-Erste/Video?documentId=22673108&bcastId=5290'),
 978             'http://www.ardmediathek.de/tv/Sturm-der-Liebe/Folge-2036-Zu-Mann-und-Frau-erkl%C3%A4rt/Das-Erste/Video?documentId=22673108&bcastId=5290',
 979         )
 980         self.assertEqual(
 981             normalize_url('http://тест.рф/фрагмент'),
 982             'http://xn--e1aybc.xn--p1ai/%D1%84%D1%80%D0%B0%D0%B3%D0%BC%D0%B5%D0%BD%D1%82',
 983         )
 984         self.assertEqual(
 985             normalize_url('http://тест.рф/абв?абв=абв#абв'),
 986             'http://xn--e1aybc.xn--p1ai/%D0%B0%D0%B1%D0%B2?%D0%B0%D0%B1%D0%B2=%D0%B0%D0%B1%D0%B2#%D0%B0%D0%B1%D0%B2',
 987         )
 988         self.assertEqual(normalize_url('http://vimeo.com/56015672#at=0'), 'http://vimeo.com/56015672#at=0')
 989
 990         self.assertEqual(normalize_url('http://www.example.com/../a/b/../c/./d.html'), 'http://www.example.com/a/c/d.html')
 991
 992     def test_remove_dot_segments(self):
 993         self.assertEqual(remove_dot_segments('/a/b/c/./../../g'), '/a/g')
 994         self.assertEqual(remove_dot_segments('mid/content=5/../6'), 'mid/6')
 995         self.assertEqual(remove_dot_segments('/ad/../cd'), '/cd')
 996         self.assertEqual(remove_dot_segments('/ad/../cd/'), '/cd/')
 997         self.assertEqual(remove_dot_segments('/..'), '/')
 998         self.assertEqual(remove_dot_segments('/./'), '/')
 999         self.assertEqual(remove_dot_segments('/./a'), '/a')
1000         self.assertEqual(remove_dot_segments('/abc/./.././d/././e/.././f/./../../ghi'), '/ghi')
1001         self.assertEqual(remove_dot_segments('/'), '/')
1002         self.assertEqual(remove_dot_segments('/t'), '/t')
1003         self.assertEqual(remove_dot_segments('t'), 't')
1004         self.assertEqual(remove_dot_segments(''), '')
1005         self.assertEqual(remove_dot_segments('/../a/b/c'), '/a/b/c')
1006         self.assertEqual(remove_dot_segments('../a'), 'a')
1007         self.assertEqual(remove_dot_segments('./a'), 'a')
1008         self.assertEqual(remove_dot_segments('.'), '')
1009         self.assertEqual(remove_dot_segments('////'), '////')
1010
1011     def test_js_to_json_vars_strings(self):
1012         self.assertDictEqual(
1013             json.loads(js_to_json(
1014                 '''{
1015                     'null': a,
1016                     'nullStr': b,
1017                     'true': c,
1018                     'trueStr': d,
1019                     'false': e,
1020                     'falseStr': f,
1021                     'unresolvedVar': g,
1022                 }''',
1023                 {
1024                     'a': 'null',
1025                     'b': '"null"',
1026                     'c': 'true',
1027                     'd': '"true"',
1028                     'e': 'false',
1029                     'f': '"false"',
1030                     'g': 'var',
1031                 },
1032             )),
1033             {
1034                 'null': None,
1035                 'nullStr': 'null',
1036                 'true': True,
1037                 'trueStr': 'true',
1038                 'false': False,
1039                 'falseStr': 'false',
1040                 'unresolvedVar': 'var',
1041             },
1042         )
1043
1044         self.assertDictEqual(
1045             json.loads(js_to_json(
1046                 '''{
1047                     'int': a,
1048                     'intStr': b,
1049                     'float': c,
1050                     'floatStr': d,
1051                 }''',
1052                 {
1053                     'a': '123',
1054                     'b': '"123"',
1055                     'c': '1.23',
1056                     'd': '"1.23"',
1057                 },
1058             )),
1059             {
1060                 'int': 123,
1061                 'intStr': '123',
1062                 'float': 1.23,
1063                 'floatStr': '1.23',
1064             },
1065         )
1066
1067         self.assertDictEqual(
1068             json.loads(js_to_json(
1069                 '''{
1070                     'object': a,
1071                     'objectStr': b,
1072                     'array': c,
1073                     'arrayStr': d,
1074                 }''',
1075                 {
1076                     'a': '{}',
1077                     'b': '"{}"',
1078                     'c': '[]',
1079                     'd': '"[]"',
1080                 },
1081             )),
1082             {
1083                 'object': {},
1084                 'objectStr': '{}',
1085                 'array': [],
1086                 'arrayStr': '[]',
1087             },
1088         )
1089
1090     def test_js_to_json_realworld(self):
1091         inp = '''{
1092             'clip':{'provider':'pseudo'}
1093         }'''
1094         self.assertEqual(js_to_json(inp), '''{
1095             "clip":{"provider":"pseudo"}
1096         }''')
1097         json.loads(js_to_json(inp))
1098
1099         inp = '''{
1100             'playlist':[{'controls':{'all':null}}]
1101         }'''
1102         self.assertEqual(js_to_json(inp), '''{
1103             "playlist":[{"controls":{"all":null}}]
1104         }''')
1105
1106         inp = '''"The CW\\'s \\'Crazy Ex-Girlfriend\\'"'''
1107         self.assertEqual(js_to_json(inp), '''"The CW's 'Crazy Ex-Girlfriend'"''')
1108
1109         inp = '"SAND Number: SAND 2013-7800P\\nPresenter: Tom Russo\\nHabanero Software Training - Xyce Software\\nXyce, Sandia\\u0027s"'
1110         json_code = js_to_json(inp)
1111         self.assertEqual(json.loads(json_code), json.loads(inp))
1112
1113         inp = '''{
1114             0:{src:'skipped', type: 'application/dash+xml'},
1115             1:{src:'skipped', type: 'application/vnd.apple.mpegURL'},
1116         }'''
1117         self.assertEqual(js_to_json(inp), '''{
1118             "0":{"src":"skipped", "type": "application/dash+xml"},
1119             "1":{"src":"skipped", "type": "application/vnd.apple.mpegURL"}
1120         }''')
1121
1122         inp = '''{"foo":101}'''
1123         self.assertEqual(js_to_json(inp), '''{"foo":101}''')
1124
1125         inp = '''{"duration": "00:01:07"}'''
1126         self.assertEqual(js_to_json(inp), '''{"duration": "00:01:07"}''')
1127
1128         inp = '''{segments: [{"offset":-3.885780586188048e-16,"duration":39.75000000000001}]}'''
1129         self.assertEqual(js_to_json(inp), '''{"segments": [{"offset":-3.885780586188048e-16,"duration":39.75000000000001}]}''')
1130
1131     def test_js_to_json_edgecases(self):
1132         on = js_to_json("{abc_def:'1\\'\\\\2\\\\\\'3\"4'}")
1133         self.assertEqual(json.loads(on), {'abc_def': "1'\\2\\'3\"4"})
1134
1135         on = js_to_json('{"abc": true}')
1136         self.assertEqual(json.loads(on), {'abc': True})
1137
1138         # Ignore JavaScript code as well
1139         on = js_to_json('''{
1140             "x": 1,
1141             y: "a",
1142             z: some.code
1143         }''')
1144         d = json.loads(on)
1145         self.assertEqual(d['x'], 1)
1146         self.assertEqual(d['y'], 'a')
1147
1148         # Just drop ! prefix for now though this results in a wrong value
1149         on = js_to_json('''{
1150             a: !0,
1151             b: !1,
1152             c: !!0,
1153             d: !!42.42,
1154             e: !!![],
1155             f: !"abc",
1156             g: !"",
1157             !42: 42
1158         }''')
1159         self.assertEqual(json.loads(on), {
1160             'a': 0,
1161             'b': 1,
1162             'c': 0,
1163             'd': 42.42,
1164             'e': [],
1165             'f': 'abc',
1166             'g': '',
1167             '42': 42,
1168         })
1169
1170         on = js_to_json('["abc", "def",]')
1171         self.assertEqual(json.loads(on), ['abc', 'def'])
1172
1173         on = js_to_json('[/*comment\n*/"abc"/*comment\n*/,/*comment\n*/"def",/*comment\n*/]')
1174         self.assertEqual(json.loads(on), ['abc', 'def'])
1175
1176         on = js_to_json('[//comment\n"abc" //comment\n,//comment\n"def",//comment\n]')
1177         self.assertEqual(json.loads(on), ['abc', 'def'])
1178
1179         on = js_to_json('{"abc": "def",}')
1180         self.assertEqual(json.loads(on), {'abc': 'def'})
1181
1182         on = js_to_json('{/*comment\n*/"abc"/*comment\n*/:/*comment\n*/"def"/*comment\n*/,/*comment\n*/}')
1183         self.assertEqual(json.loads(on), {'abc': 'def'})
1184
1185         on = js_to_json('{ 0: /* " \n */ ",]" , }')
1186         self.assertEqual(json.loads(on), {'0': ',]'})
1187
1188         on = js_to_json('{ /*comment\n*/0/*comment\n*/: /* " \n */ ",]" , }')
1189         self.assertEqual(json.loads(on), {'0': ',]'})
1190
1191         on = js_to_json('{ 0: // comment\n1 }')
1192         self.assertEqual(json.loads(on), {'0': 1})
1193
1194         on = js_to_json(r'["<p>x<\/p>"]')
1195         self.assertEqual(json.loads(on), ['<p>x</p>'])
1196
1197         on = js_to_json(r'["\xaa"]')
1198         self.assertEqual(json.loads(on), ['\u00aa'])
1199
1200         on = js_to_json("['a\\\nb']")
1201         self.assertEqual(json.loads(on), ['ab'])
1202
1203         on = js_to_json("/*comment\n*/[/*comment\n*/'a\\\nb'/*comment\n*/]/*comment\n*/")
1204         self.assertEqual(json.loads(on), ['ab'])
1205
1206         on = js_to_json('{0xff:0xff}')
1207         self.assertEqual(json.loads(on), {'255': 255})
1208
1209         on = js_to_json('{/*comment\n*/0xff/*comment\n*/:/*comment\n*/0xff/*comment\n*/}')
1210         self.assertEqual(json.loads(on), {'255': 255})
1211
1212         on = js_to_json('{077:077}')
1213         self.assertEqual(json.loads(on), {'63': 63})
1214
1215         on = js_to_json('{/*comment\n*/077/*comment\n*/:/*comment\n*/077/*comment\n*/}')
1216         self.assertEqual(json.loads(on), {'63': 63})
1217
1218         on = js_to_json('{42:42}')
1219         self.assertEqual(json.loads(on), {'42': 42})
1220
1221         on = js_to_json('{/*comment\n*/42/*comment\n*/:/*comment\n*/42/*comment\n*/}')
1222         self.assertEqual(json.loads(on), {'42': 42})
1223
1224         on = js_to_json('{42:4.2e1}')
1225         self.assertEqual(json.loads(on), {'42': 42.0})
1226
1227         on = js_to_json('{ "0x40": "0x40" }')
1228         self.assertEqual(json.loads(on), {'0x40': '0x40'})
1229
1230         on = js_to_json('{ "040": "040" }')
1231         self.assertEqual(json.loads(on), {'040': '040'})
1232
1233         on = js_to_json('[1,//{},\n2]')
1234         self.assertEqual(json.loads(on), [1, 2])
1235
1236         on = js_to_json(R'"\^\$\#"')
1237         self.assertEqual(json.loads(on), R'^$#', msg='Unnecessary escapes should be stripped')
1238
1239         on = js_to_json('\'"\\""\'')
1240         self.assertEqual(json.loads(on), '"""', msg='Unnecessary quote escape should be escaped')
1241
1242         on = js_to_json('[new Date("spam"), \'("eggs")\']')
1243         self.assertEqual(json.loads(on), ['spam', '("eggs")'], msg='Date regex should match a single string')
1244
1245     def test_js_to_json_malformed(self):
1246         self.assertEqual(js_to_json('42a1'), '42"a1"')
1247         self.assertEqual(js_to_json('42a-1'), '42"a"-1')
1248
1249     def test_js_to_json_template_literal(self):
1250         self.assertEqual(js_to_json('`Hello ${name}`', {'name': '"world"'}), '"Hello world"')
1251         self.assertEqual(js_to_json('`${name}${name}`', {'name': '"X"'}), '"XX"')
1252         self.assertEqual(js_to_json('`${name}${name}`', {'name': '5'}), '"55"')
1253         self.assertEqual(js_to_json('`${name}"${name}"`', {'name': '5'}), '"5\\"5\\""')
1254         self.assertEqual(js_to_json('`${name}`', {}), '"name"')
1255
1256     def test_js_to_json_common_constructors(self):
1257         self.assertEqual(json.loads(js_to_json('new Map([["a", 5]])')), {'a': 5})
1258         self.assertEqual(json.loads(js_to_json('Array(5, 10)')), [5, 10])
1259         self.assertEqual(json.loads(js_to_json('new Array(15,5)')), [15, 5])
1260         self.assertEqual(json.loads(js_to_json('new Map([Array(5, 10),new Array(15,5)])')), {'5': 10, '15': 5})
1261         self.assertEqual(json.loads(js_to_json('new Date("123")')), '123')
1262         self.assertEqual(json.loads(js_to_json('new Date(\'2023-10-19\')')), '2023-10-19')
1263
1264     def test_extract_attributes(self):
1265         self.assertEqual(extract_attributes('<e x="y">'), {'x': 'y'})
1266         self.assertEqual(extract_attributes("<e x='y'>"), {'x': 'y'})
1267         self.assertEqual(extract_attributes('<e x=y>'), {'x': 'y'})
1268         self.assertEqual(extract_attributes('<e x="a \'b\' c">'), {'x': "a 'b' c"})
1269         self.assertEqual(extract_attributes('<e x=\'a "b" c\'>'), {'x': 'a "b" c'})
1270         self.assertEqual(extract_attributes('<e x="&#121;">'), {'x': 'y'})
1271         self.assertEqual(extract_attributes('<e x="&#x79;">'), {'x': 'y'})
1272         self.assertEqual(extract_attributes('<e x="&amp;">'), {'x': '&'})  # XML
1273         self.assertEqual(extract_attributes('<e x="&quot;">'), {'x': '"'})
1274         self.assertEqual(extract_attributes('<e x="&pound;">'), {'x': '£'})  # HTML 3.2
1275         self.assertEqual(extract_attributes('<e x="&lambda;">'), {'x': 'λ'})  # HTML 4.0
1276         self.assertEqual(extract_attributes('<e x="&foo">'), {'x': '&foo'})
1277         self.assertEqual(extract_attributes('<e x="\'">'), {'x': "'"})
1278         self.assertEqual(extract_attributes('<e x=\'"\'>'), {'x': '"'})
1279         self.assertEqual(extract_attributes('<e x >'), {'x': None})
1280         self.assertEqual(extract_attributes('<e x=y a>'), {'x': 'y', 'a': None})
1281         self.assertEqual(extract_attributes('<e x= y>'), {'x': 'y'})
1282         self.assertEqual(extract_attributes('<e x=1 y=2 x=3>'), {'y': '2', 'x': '3'})
1283         self.assertEqual(extract_attributes('<e \nx=\ny\n>'), {'x': 'y'})
1284         self.assertEqual(extract_attributes('<e \nx=\n"y"\n>'), {'x': 'y'})
1285         self.assertEqual(extract_attributes("<e \nx=\n'y'\n>"), {'x': 'y'})
1286         self.assertEqual(extract_attributes('<e \nx="\ny\n">'), {'x': '\ny\n'})
1287         self.assertEqual(extract_attributes('<e CAPS=x>'), {'caps': 'x'})  # Names lowercased
1288         self.assertEqual(extract_attributes('<e x=1 X=2>'), {'x': '2'})
1289         self.assertEqual(extract_attributes('<e X=1 x=2>'), {'x': '2'})
1290         self.assertEqual(extract_attributes('<e _:funny-name1=1>'), {'_:funny-name1': '1'})
1291         self.assertEqual(extract_attributes('<e x="Fáilte 世界 \U0001f600">'), {'x': 'Fáilte 世界 \U0001f600'})
1292         self.assertEqual(extract_attributes('<e x="décompose&#769;">'), {'x': 'décompose\u0301'})
1293         # "Narrow" Python builds don't support unicode code points outside BMP.
1294         try:
1295             chr(0x10000)
1296             supports_outside_bmp = True
1297         except ValueError:
1298             supports_outside_bmp = False
1299         if supports_outside_bmp:
1300             self.assertEqual(extract_attributes('<e x="Smile &#128512;!">'), {'x': 'Smile \U0001f600!'})
1301         # Malformed HTML should not break attributes extraction on older Python
1302         self.assertEqual(extract_attributes('<mal"formed/>'), {})
1303
1304     def test_clean_html(self):
1305         self.assertEqual(clean_html('a:\nb'), 'a: b')
1306         self.assertEqual(clean_html('a:\n   "b"'), 'a: "b"')
1307         self.assertEqual(clean_html('a<br>\xa0b'), 'a\nb')
1308
1309     def test_args_to_str(self):
1310         self.assertEqual(
1311             args_to_str(['foo', 'ba/r', '-baz', '2 be', '']),
1312             'foo ba/r -baz \'2 be\' \'\'' if os.name != 'nt' else 'foo ba/r -baz "2 be" ""',
1313         )
1314
1315     def test_parse_filesize(self):
1316         self.assertEqual(parse_filesize(None), None)
1317         self.assertEqual(parse_filesize(''), None)
1318         self.assertEqual(parse_filesize('91 B'), 91)
1319         self.assertEqual(parse_filesize('foobar'), None)
1320         self.assertEqual(parse_filesize('2 MiB'), 2097152)
1321         self.assertEqual(parse_filesize('5 GB'), 5000000000)
1322         self.assertEqual(parse_filesize('1.2Tb'), 1200000000000)
1323         self.assertEqual(parse_filesize('1.2tb'), 1200000000000)
1324         self.assertEqual(parse_filesize('1,24 KB'), 1240)
1325         self.assertEqual(parse_filesize('1,24 kb'), 1240)
1326         self.assertEqual(parse_filesize('8.5 megabytes'), 8500000)
1327
1328     def test_parse_count(self):
1329         self.assertEqual(parse_count(None), None)
1330         self.assertEqual(parse_count(''), None)
1331         self.assertEqual(parse_count('0'), 0)
1332         self.assertEqual(parse_count('1000'), 1000)
1333         self.assertEqual(parse_count('1.000'), 1000)
1334         self.assertEqual(parse_count('1.1k'), 1100)
1335         self.assertEqual(parse_count('1.1 k'), 1100)
1336         self.assertEqual(parse_count('1,1 k'), 1100)
1337         self.assertEqual(parse_count('1.1kk'), 1100000)
1338         self.assertEqual(parse_count('1.1kk '), 1100000)
1339         self.assertEqual(parse_count('1,1kk'), 1100000)
1340         self.assertEqual(parse_count('100 views'), 100)
1341         self.assertEqual(parse_count('1,100 views'), 1100)
1342         self.assertEqual(parse_count('1.1kk views'), 1100000)
1343         self.assertEqual(parse_count('10M views'), 10000000)
1344         self.assertEqual(parse_count('has 10M views'), 10000000)
1345
1346     def test_parse_resolution(self):
1347         self.assertEqual(parse_resolution(None), {})
1348         self.assertEqual(parse_resolution(''), {})
1349         self.assertEqual(parse_resolution(' 1920x1080'), {'width': 1920, 'height': 1080})
1350         self.assertEqual(parse_resolution('1920×1080 '), {'width': 1920, 'height': 1080})
1351         self.assertEqual(parse_resolution('1920 x 1080'), {'width': 1920, 'height': 1080})
1352         self.assertEqual(parse_resolution('720p'), {'height': 720})
1353         self.assertEqual(parse_resolution('4k'), {'height': 2160})
1354         self.assertEqual(parse_resolution('8K'), {'height': 4320})
1355         self.assertEqual(parse_resolution('pre_1920x1080_post'), {'width': 1920, 'height': 1080})
1356         self.assertEqual(parse_resolution('ep1x2'), {})
1357         self.assertEqual(parse_resolution('1920, 1080'), {'width': 1920, 'height': 1080})
1358
1359     def test_parse_bitrate(self):
1360         self.assertEqual(parse_bitrate(None), None)
1361         self.assertEqual(parse_bitrate(''), None)
1362         self.assertEqual(parse_bitrate('300kbps'), 300)
1363         self.assertEqual(parse_bitrate('1500kbps'), 1500)
1364         self.assertEqual(parse_bitrate('300 kbps'), 300)
1365
1366     def test_version_tuple(self):
1367         self.assertEqual(version_tuple('1'), (1,))
1368         self.assertEqual(version_tuple('10.23.344'), (10, 23, 344))
1369         self.assertEqual(version_tuple('10.1-6'), (10, 1, 6))  # avconv style
1370
1371     def test_detect_exe_version(self):
1372         self.assertEqual(detect_exe_version('''ffmpeg version 1.2.1
1373 built on May 27 2013 08:37:26 with gcc 4.7 (Debian 4.7.3-4)
1374 configuration: --prefix=/usr --extra-'''), '1.2.1')
1375         self.assertEqual(detect_exe_version('''ffmpeg version N-63176-g1fb4685
1376 built on May 15 2014 22:09:06 with gcc 4.8.2 (GCC)'''), 'N-63176-g1fb4685')
1377         self.assertEqual(detect_exe_version('''X server found. dri2 connection failed!
1378 Trying to open render node...
1379 Success at /dev/dri/renderD128.
1380 ffmpeg version 2.4.4 Copyright (c) 2000-2014 the FFmpeg ...'''), '2.4.4')
1381
1382     def test_age_restricted(self):
1383         self.assertFalse(age_restricted(None, 10))  # unrestricted content
1384         self.assertFalse(age_restricted(1, None))  # unrestricted policy
1385         self.assertFalse(age_restricted(8, 10))
1386         self.assertTrue(age_restricted(18, 14))
1387         self.assertFalse(age_restricted(18, 18))
1388
1389     def test_is_html(self):
1390         self.assertFalse(is_html(b'\x49\x44\x43<html'))
1391         self.assertTrue(is_html(b'<!DOCTYPE foo>\xaaa'))
1392         self.assertTrue(is_html(  # UTF-8 with BOM
1393             b'\xef\xbb\xbf<!DOCTYPE foo>\xaaa'))
1394         self.assertTrue(is_html(  # UTF-16-LE
1395             b'\xff\xfe<\x00h\x00t\x00m\x00l\x00>\x00\xe4\x00',
1396         ))
1397         self.assertTrue(is_html(  # UTF-16-BE
1398             b'\xfe\xff\x00<\x00h\x00t\x00m\x00l\x00>\x00\xe4',
1399         ))
1400         self.assertTrue(is_html(  # UTF-32-BE
1401             b'\x00\x00\xFE\xFF\x00\x00\x00<\x00\x00\x00h\x00\x00\x00t\x00\x00\x00m\x00\x00\x00l\x00\x00\x00>\x00\x00\x00\xe4'))
1402         self.assertTrue(is_html(  # UTF-32-LE
1403             b'\xFF\xFE\x00\x00<\x00\x00\x00h\x00\x00\x00t\x00\x00\x00m\x00\x00\x00l\x00\x00\x00>\x00\x00\x00\xe4\x00\x00\x00'))
1404
1405     def test_render_table(self):
1406         self.assertEqual(
1407             render_table(
1408                 ['a', 'empty', 'bcd'],
1409                 [[123, '', 4], [9999, '', 51]]),
1410             'a    empty bcd\n'
1411             '123        4\n'
1412             '9999       51')
1413
1414         self.assertEqual(
1415             render_table(
1416                 ['a', 'empty', 'bcd'],
1417                 [[123, '', 4], [9999, '', 51]],
1418                 hide_empty=True),
1419             'a    bcd\n'
1420             '123  4\n'
1421             '9999 51')
1422
1423         self.assertEqual(
1424             render_table(
1425                 ['\ta', 'bcd'],
1426                 [['1\t23', 4], ['\t9999', 51]]),
1427             '   a bcd\n'
1428             '1 23 4\n'
1429             '9999 51')
1430
1431         self.assertEqual(
1432             render_table(
1433                 ['a', 'bcd'],
1434                 [[123, 4], [9999, 51]],
1435                 delim='-'),
1436             'a    bcd\n'
1437             '--------\n'
1438             '123  4\n'
1439             '9999 51')
1440
1441         self.assertEqual(
1442             render_table(
1443                 ['a', 'bcd'],
1444                 [[123, 4], [9999, 51]],
1445                 delim='-', extra_gap=2),
1446             'a      bcd\n'
1447             '----------\n'
1448             '123    4\n'
1449             '9999   51')
1450
1451     def test_match_str(self):
1452         # Unary
1453         self.assertFalse(match_str('xy', {'x': 1200}))
1454         self.assertTrue(match_str('!xy', {'x': 1200}))
1455         self.assertTrue(match_str('x', {'x': 1200}))
1456         self.assertFalse(match_str('!x', {'x': 1200}))
1457         self.assertTrue(match_str('x', {'x': 0}))
1458         self.assertTrue(match_str('is_live', {'is_live': True}))
1459         self.assertFalse(match_str('is_live', {'is_live': False}))
1460         self.assertFalse(match_str('is_live', {'is_live': None}))
1461         self.assertFalse(match_str('is_live', {}))
1462         self.assertFalse(match_str('!is_live', {'is_live': True}))
1463         self.assertTrue(match_str('!is_live', {'is_live': False}))
1464         self.assertTrue(match_str('!is_live', {'is_live': None}))
1465         self.assertTrue(match_str('!is_live', {}))
1466         self.assertTrue(match_str('title', {'title': 'abc'}))
1467         self.assertTrue(match_str('title', {'title': ''}))
1468         self.assertFalse(match_str('!title', {'title': 'abc'}))
1469         self.assertFalse(match_str('!title', {'title': ''}))
1470
1471         # Numeric
1472         self.assertFalse(match_str('x>0', {'x': 0}))
1473         self.assertFalse(match_str('x>0', {}))
1474         self.assertTrue(match_str('x>?0', {}))
1475         self.assertTrue(match_str('x>1K', {'x': 1200}))
1476         self.assertFalse(match_str('x>2K', {'x': 1200}))
1477         self.assertTrue(match_str('x>=1200 & x < 1300', {'x': 1200}))
1478         self.assertFalse(match_str('x>=1100 & x < 1200', {'x': 1200}))
1479         self.assertTrue(match_str('x > 1:0:0', {'x': 3700}))
1480
1481         # String
1482         self.assertFalse(match_str('y=a212', {'y': 'foobar42'}))
1483         self.assertTrue(match_str('y=foobar42', {'y': 'foobar42'}))
1484         self.assertFalse(match_str('y!=foobar42', {'y': 'foobar42'}))
1485         self.assertTrue(match_str('y!=foobar2', {'y': 'foobar42'}))
1486         self.assertTrue(match_str('y^=foo', {'y': 'foobar42'}))
1487         self.assertFalse(match_str('y!^=foo', {'y': 'foobar42'}))
1488         self.assertFalse(match_str('y^=bar', {'y': 'foobar42'}))
1489         self.assertTrue(match_str('y!^=bar', {'y': 'foobar42'}))
1490         self.assertRaises(ValueError, match_str, 'x^=42', {'x': 42})
1491         self.assertTrue(match_str('y*=bar', {'y': 'foobar42'}))
1492         self.assertFalse(match_str('y!*=bar', {'y': 'foobar42'}))
1493         self.assertFalse(match_str('y*=baz', {'y': 'foobar42'}))
1494         self.assertTrue(match_str('y!*=baz', {'y': 'foobar42'}))
1495         self.assertTrue(match_str('y$=42', {'y': 'foobar42'}))
1496         self.assertFalse(match_str('y$=43', {'y': 'foobar42'}))
1497
1498         # And
1499         self.assertFalse(match_str(
1500             'like_count > 100 & dislike_count <? 50 & description',
1501             {'like_count': 90, 'description': 'foo'}))
1502         self.assertTrue(match_str(
1503             'like_count > 100 & dislike_count <? 50 & description',
1504             {'like_count': 190, 'description': 'foo'}))
1505         self.assertFalse(match_str(
1506             'like_count > 100 & dislike_count <? 50 & description',
1507             {'like_count': 190, 'dislike_count': 60, 'description': 'foo'}))
1508         self.assertFalse(match_str(
1509             'like_count > 100 & dislike_count <? 50 & description',
1510             {'like_count': 190, 'dislike_count': 10}))
1511
1512         # Regex
1513         self.assertTrue(match_str(r'x~=\bbar', {'x': 'foo bar'}))
1514         self.assertFalse(match_str(r'x~=\bbar.+', {'x': 'foo bar'}))
1515         self.assertFalse(match_str(r'x~=^FOO', {'x': 'foo bar'}))
1516         self.assertTrue(match_str(r'x~=(?i)^FOO', {'x': 'foo bar'}))
1517
1518         # Quotes
1519         self.assertTrue(match_str(r'x^="foo"', {'x': 'foo "bar"'}))
1520         self.assertFalse(match_str(r'x^="foo  "', {'x': 'foo "bar"'}))
1521         self.assertFalse(match_str(r'x$="bar"', {'x': 'foo "bar"'}))
1522         self.assertTrue(match_str(r'x$=" \"bar\""', {'x': 'foo "bar"'}))
1523
1524         # Escaping &
1525         self.assertFalse(match_str(r'x=foo & bar', {'x': 'foo & bar'}))
1526         self.assertTrue(match_str(r'x=foo \& bar', {'x': 'foo & bar'}))
1527         self.assertTrue(match_str(r'x=foo \& bar & x^=foo', {'x': 'foo & bar'}))
1528         self.assertTrue(match_str(r'x="foo \& bar" & x^=foo', {'x': 'foo & bar'}))
1529
1530         # Example from docs
1531         self.assertTrue(match_str(
1532             r"!is_live & like_count>?100 & description~='(?i)\bcats \& dogs\b'",
1533             {'description': 'Raining Cats & Dogs'}))
1534
1535         # Incomplete
1536         self.assertFalse(match_str('id!=foo', {'id': 'foo'}, True))
1537         self.assertTrue(match_str('x', {'id': 'foo'}, True))
1538         self.assertTrue(match_str('!x', {'id': 'foo'}, True))
1539         self.assertFalse(match_str('x', {'id': 'foo'}, False))
1540
1541     def test_parse_dfxp_time_expr(self):
1542         self.assertEqual(parse_dfxp_time_expr(None), None)
1543         self.assertEqual(parse_dfxp_time_expr(''), None)
1544         self.assertEqual(parse_dfxp_time_expr('0.1'), 0.1)
1545         self.assertEqual(parse_dfxp_time_expr('0.1s'), 0.1)
1546         self.assertEqual(parse_dfxp_time_expr('00:00:01'), 1.0)
1547         self.assertEqual(parse_dfxp_time_expr('00:00:01.100'), 1.1)
1548         self.assertEqual(parse_dfxp_time_expr('00:00:01:100'), 1.1)
1549
1550     def test_dfxp2srt(self):
1551         dfxp_data = '''<?xml version="1.0" encoding="UTF-8"?>
1552             <tt xmlns="http://www.w3.org/ns/ttml" xml:lang="en" xmlns:tts="http://www.w3.org/ns/ttml#parameter">
1553             <body>
1554                 <div xml:lang="en">
1555                     <p begin="0" end="1">The following line contains Chinese characters and special symbols</p>
1556                     <p begin="1" end="2">第二行<br/>♪♪</p>
1557                     <p begin="2" dur="1"><span>Third<br/>Line</span></p>
1558                     <p begin="3" end="-1">Lines with invalid timestamps are ignored</p>
1559                     <p begin="-1" end="-1">Ignore, two</p>
1560                     <p begin="3" dur="-1">Ignored, three</p>
1561                 </div>
1562             </body>
1563             </tt>'''.encode()
1564         srt_data = '''1
1565 00:00:00,000 --> 00:00:01,000
1566 The following line contains Chinese characters and special symbols
1567
1568 2
1569 00:00:01,000 --> 00:00:02,000
1570 第二行
1571 ♪♪
1572
1573 3
1574 00:00:02,000 --> 00:00:03,000
1575 Third
1576 Line
1577
1578 '''
1579         self.assertEqual(dfxp2srt(dfxp_data), srt_data)
1580
1581         dfxp_data_no_default_namespace = b'''<?xml version="1.0" encoding="UTF-8"?>
1582             <tt xml:lang="en" xmlns:tts="http://www.w3.org/ns/ttml#parameter">
1583             <body>
1584                 <div xml:lang="en">
1585                     <p begin="0" end="1">The first line</p>
1586                 </div>
1587             </body>
1588             </tt>'''
1589         srt_data = '''1
1590 00:00:00,000 --> 00:00:01,000
1591 The first line
1592
1593 '''
1594         self.assertEqual(dfxp2srt(dfxp_data_no_default_namespace), srt_data)
1595
1596         dfxp_data_with_style = b'''<?xml version="1.0" encoding="utf-8"?>
1597 <tt xmlns="http://www.w3.org/2006/10/ttaf1" xmlns:ttp="http://www.w3.org/2006/10/ttaf1#parameter" ttp:timeBase="media" xmlns:tts="http://www.w3.org/2006/10/ttaf1#style" xml:lang="en" xmlns:ttm="http://www.w3.org/2006/10/ttaf1#metadata">
1598   <head>
1599     <styling>
1600       <style id="s2" style="s0" tts:color="cyan" tts:fontWeight="bold" />
1601       <style id="s1" style="s0" tts:color="yellow" tts:fontStyle="italic" />
1602       <style id="s3" style="s0" tts:color="lime" tts:textDecoration="underline" />
1603       <style id="s0" tts:backgroundColor="black" tts:fontStyle="normal" tts:fontSize="16" tts:fontFamily="sansSerif" tts:color="white" />
1604     </styling>
1605   </head>
1606   <body tts:textAlign="center" style="s0">
1607     <div>
1608       <p begin="00:00:02.08" id="p0" end="00:00:05.84">default style<span tts:color="red">custom style</span></p>
1609       <p style="s2" begin="00:00:02.08" id="p0" end="00:00:05.84"><span tts:color="lime">part 1<br /></span><span tts:color="cyan">part 2</span></p>
1610       <p style="s3" begin="00:00:05.84" id="p1" end="00:00:09.56">line 3<br />part 3</p>
1611       <p style="s1" tts:textDecoration="underline" begin="00:00:09.56" id="p2" end="00:00:12.36"><span style="s2" tts:color="lime">inner<br /> </span>style</p>
1612     </div>
1613   </body>
1614 </tt>'''
1615         srt_data = '''1
1616 00:00:02,080 --> 00:00:05,840
1617 <font color="white" face="sansSerif" size="16">default style<font color="red">custom style</font></font>
1618
1619 2
1620 00:00:02,080 --> 00:00:05,840
1621 <b><font color="cyan" face="sansSerif" size="16"><font color="lime">part 1
1622 </font>part 2</font></b>
1623
1624 3
1625 00:00:05,840 --> 00:00:09,560
1626 <u><font color="lime">line 3
1627 part 3</font></u>
1628
1629 4
1630 00:00:09,560 --> 00:00:12,360
1631 <i><u><font color="yellow"><font color="lime">inner
1632  </font>style</font></u></i>
1633
1634 '''
1635         self.assertEqual(dfxp2srt(dfxp_data_with_style), srt_data)
1636
1637         dfxp_data_non_utf8 = '''<?xml version="1.0" encoding="UTF-16"?>
1638             <tt xmlns="http://www.w3.org/ns/ttml" xml:lang="en" xmlns:tts="http://www.w3.org/ns/ttml#parameter">
1639             <body>
1640                 <div xml:lang="en">
1641                     <p begin="0" end="1">Line 1</p>
1642                     <p begin="1" end="2">第二行</p>
1643                 </div>
1644             </body>
1645             </tt>'''.encode('utf-16')
1646         srt_data = '''1
1647 00:00:00,000 --> 00:00:01,000
1648 Line 1
1649
1650 2
1651 00:00:01,000 --> 00:00:02,000
1652 第二行
1653
1654 '''
1655         self.assertEqual(dfxp2srt(dfxp_data_non_utf8), srt_data)
1656
1657     def test_cli_option(self):
1658         self.assertEqual(cli_option({'proxy': '127.0.0.1:3128'}, '--proxy', 'proxy'), ['--proxy', '127.0.0.1:3128'])
1659         self.assertEqual(cli_option({'proxy': None}, '--proxy', 'proxy'), [])
1660         self.assertEqual(cli_option({}, '--proxy', 'proxy'), [])
1661         self.assertEqual(cli_option({'retries': 10}, '--retries', 'retries'), ['--retries', '10'])
1662
1663     def test_cli_valueless_option(self):
1664         self.assertEqual(cli_valueless_option(
1665             {'downloader': 'external'}, '--external-downloader', 'downloader', 'external'), ['--external-downloader'])
1666         self.assertEqual(cli_valueless_option(
1667             {'downloader': 'internal'}, '--external-downloader', 'downloader', 'external'), [])
1668         self.assertEqual(cli_valueless_option(
1669             {'nocheckcertificate': True}, '--no-check-certificate', 'nocheckcertificate'), ['--no-check-certificate'])
1670         self.assertEqual(cli_valueless_option(
1671             {'nocheckcertificate': False}, '--no-check-certificate', 'nocheckcertificate'), [])
1672         self.assertEqual(cli_valueless_option(
1673             {'checkcertificate': True}, '--no-check-certificate', 'checkcertificate', False), [])
1674         self.assertEqual(cli_valueless_option(
1675             {'checkcertificate': False}, '--no-check-certificate', 'checkcertificate', False), ['--no-check-certificate'])
1676
1677     def test_cli_bool_option(self):
1678         self.assertEqual(
1679             cli_bool_option(
1680                 {'nocheckcertificate': True}, '--no-check-certificate', 'nocheckcertificate'),
1681             ['--no-check-certificate', 'true'])
1682         self.assertEqual(
1683             cli_bool_option(
1684                 {'nocheckcertificate': True}, '--no-check-certificate', 'nocheckcertificate', separator='='),
1685             ['--no-check-certificate=true'])
1686         self.assertEqual(
1687             cli_bool_option(
1688                 {'nocheckcertificate': True}, '--check-certificate', 'nocheckcertificate', 'false', 'true'),
1689             ['--check-certificate', 'false'])
1690         self.assertEqual(
1691             cli_bool_option(
1692                 {'nocheckcertificate': True}, '--check-certificate', 'nocheckcertificate', 'false', 'true', '='),
1693             ['--check-certificate=false'])
1694         self.assertEqual(
1695             cli_bool_option(
1696                 {'nocheckcertificate': False}, '--check-certificate', 'nocheckcertificate', 'false', 'true'),
1697             ['--check-certificate', 'true'])
1698         self.assertEqual(
1699             cli_bool_option(
1700                 {'nocheckcertificate': False}, '--check-certificate', 'nocheckcertificate', 'false', 'true', '='),
1701             ['--check-certificate=true'])
1702         self.assertEqual(
1703             cli_bool_option(
1704                 {}, '--check-certificate', 'nocheckcertificate', 'false', 'true', '='),
1705             [])
1706
1707     def test_ohdave_rsa_encrypt(self):
1708         N = 0xab86b6371b5318aaa1d3c9e612a9f1264f372323c8c0f19875b5fc3b3fd3afcc1e5bec527aa94bfa85bffc157e4245aebda05389a5357b75115ac94f074aefcd
1709         e = 65537
1710
1711         self.assertEqual(
1712             ohdave_rsa_encrypt(b'aa111222', e, N),
1713             '726664bd9a23fd0c70f9f1b84aab5e3905ce1e45a584e9cbcf9bcc7510338fc1986d6c599ff990d923aa43c51c0d9013cd572e13bc58f4ae48f2ed8c0b0ba881')
1714
1715     def test_pkcs1pad(self):
1716         data = [1, 2, 3]
1717         padded_data = pkcs1pad(data, 32)
1718         self.assertEqual(padded_data[:2], [0, 2])
1719         self.assertEqual(padded_data[28:], [0, 1, 2, 3])
1720
1721         self.assertRaises(ValueError, pkcs1pad, data, 8)
1722
1723     def test_encode_base_n(self):
1724         self.assertEqual(encode_base_n(0, 30), '0')
1725         self.assertEqual(encode_base_n(80, 30), '2k')
1726
1727         custom_table = '9876543210ZYXWVUTSRQPONMLKJIHGFEDCBA'
1728         self.assertEqual(encode_base_n(0, 30, custom_table), '9')
1729         self.assertEqual(encode_base_n(80, 30, custom_table), '7P')
1730
1731         self.assertRaises(ValueError, encode_base_n, 0, 70)
1732         self.assertRaises(ValueError, encode_base_n, 0, 60, custom_table)
1733
1734     def test_caesar(self):
1735         self.assertEqual(caesar('ace', 'abcdef', 2), 'cea')
1736         self.assertEqual(caesar('cea', 'abcdef', -2), 'ace')
1737         self.assertEqual(caesar('ace', 'abcdef', -2), 'eac')
1738         self.assertEqual(caesar('eac', 'abcdef', 2), 'ace')
1739         self.assertEqual(caesar('ace', 'abcdef', 0), 'ace')
1740         self.assertEqual(caesar('xyz', 'abcdef', 2), 'xyz')
1741         self.assertEqual(caesar('abc', 'acegik', 2), 'ebg')
1742         self.assertEqual(caesar('ebg', 'acegik', -2), 'abc')
1743
1744     def test_rot47(self):
1745         self.assertEqual(rot47('yt-dlp'), r'JE\5=A')
1746         self.assertEqual(rot47('YT-DLP'), r'*%\s{!')
1747
1748     def test_urshift(self):
1749         self.assertEqual(urshift(3, 1), 1)
1750         self.assertEqual(urshift(-3, 1), 2147483646)
1751
1752     GET_ELEMENT_BY_CLASS_TEST_STRING = '''
1753         <span class="foo bar">nice</span>
1754     '''
1755
1756     def test_get_element_by_class(self):
1757         html = self.GET_ELEMENT_BY_CLASS_TEST_STRING
1758
1759         self.assertEqual(get_element_by_class('foo', html), 'nice')
1760         self.assertEqual(get_element_by_class('no-such-class', html), None)
1761
1762     def test_get_element_html_by_class(self):
1763         html = self.GET_ELEMENT_BY_CLASS_TEST_STRING
1764
1765         self.assertEqual(get_element_html_by_class('foo', html), html.strip())
1766         self.assertEqual(get_element_by_class('no-such-class', html), None)
1767
1768     GET_ELEMENT_BY_ATTRIBUTE_TEST_STRING = '''
1769         <div itemprop="author" itemscope>foo</div>
1770     '''
1771
1772     def test_get_element_by_attribute(self):
1773         html = self.GET_ELEMENT_BY_CLASS_TEST_STRING
1774
1775         self.assertEqual(get_element_by_attribute('class', 'foo bar', html), 'nice')
1776         self.assertEqual(get_element_by_attribute('class', 'foo', html), None)
1777         self.assertEqual(get_element_by_attribute('class', 'no-such-foo', html), None)
1778
1779         html = self.GET_ELEMENT_BY_ATTRIBUTE_TEST_STRING
1780
1781         self.assertEqual(get_element_by_attribute('itemprop', 'author', html), 'foo')
1782
1783     def test_get_element_html_by_attribute(self):
1784         html = self.GET_ELEMENT_BY_CLASS_TEST_STRING
1785
1786         self.assertEqual(get_element_html_by_attribute('class', 'foo bar', html), html.strip())
1787         self.assertEqual(get_element_html_by_attribute('class', 'foo', html), None)
1788         self.assertEqual(get_element_html_by_attribute('class', 'no-such-foo', html), None)
1789
1790         html = self.GET_ELEMENT_BY_ATTRIBUTE_TEST_STRING
1791
1792         self.assertEqual(get_element_html_by_attribute('itemprop', 'author', html), html.strip())
1793
1794     GET_ELEMENTS_BY_CLASS_TEST_STRING = '''
1795         <span class="foo bar">nice</span><span class="foo bar">also nice</span>
1796     '''
1797     GET_ELEMENTS_BY_CLASS_RES = ['<span class="foo bar">nice</span>', '<span class="foo bar">also nice</span>']
1798
1799     def test_get_elements_by_class(self):
1800         html = self.GET_ELEMENTS_BY_CLASS_TEST_STRING
1801
1802         self.assertEqual(get_elements_by_class('foo', html), ['nice', 'also nice'])
1803         self.assertEqual(get_elements_by_class('no-such-class', html), [])
1804
1805     def test_get_elements_html_by_class(self):
1806         html = self.GET_ELEMENTS_BY_CLASS_TEST_STRING
1807
1808         self.assertEqual(get_elements_html_by_class('foo', html), self.GET_ELEMENTS_BY_CLASS_RES)
1809         self.assertEqual(get_elements_html_by_class('no-such-class', html), [])
1810
1811     def test_get_elements_by_attribute(self):
1812         html = self.GET_ELEMENTS_BY_CLASS_TEST_STRING
1813
1814         self.assertEqual(get_elements_by_attribute('class', 'foo bar', html), ['nice', 'also nice'])
1815         self.assertEqual(get_elements_by_attribute('class', 'foo', html), [])
1816         self.assertEqual(get_elements_by_attribute('class', 'no-such-foo', html), [])
1817
1818     def test_get_elements_html_by_attribute(self):
1819         html = self.GET_ELEMENTS_BY_CLASS_TEST_STRING
1820
1821         self.assertEqual(get_elements_html_by_attribute('class', 'foo bar', html), self.GET_ELEMENTS_BY_CLASS_RES)
1822         self.assertEqual(get_elements_html_by_attribute('class', 'foo', html), [])
1823         self.assertEqual(get_elements_html_by_attribute('class', 'no-such-foo', html), [])
1824
1825     def test_get_elements_text_and_html_by_attribute(self):
1826         html = self.GET_ELEMENTS_BY_CLASS_TEST_STRING
1827
1828         self.assertEqual(
1829             list(get_elements_text_and_html_by_attribute('class', 'foo bar', html)),
1830             list(zip(['nice', 'also nice'], self.GET_ELEMENTS_BY_CLASS_RES)))
1831         self.assertEqual(list(get_elements_text_and_html_by_attribute('class', 'foo', html)), [])
1832         self.assertEqual(list(get_elements_text_and_html_by_attribute('class', 'no-such-foo', html)), [])
1833
1834         self.assertEqual(list(get_elements_text_and_html_by_attribute(
1835             'class', 'foo', '<a class="foo">nice</a><span class="foo">nice</span>', tag='a')), [('nice', '<a class="foo">nice</a>')])
1836
1837     GET_ELEMENT_BY_TAG_TEST_STRING = '''
1838     random text lorem ipsum</p>
1839     <div>
1840         this should be returned
1841         <span>this should also be returned</span>
1842         <div>
1843             this should also be returned
1844         </div>
1845         closing tag above should not trick, so this should also be returned
1846     </div>
1847     but this text should not be returned
1848     '''
1849     GET_ELEMENT_BY_TAG_RES_OUTERDIV_HTML = GET_ELEMENT_BY_TAG_TEST_STRING.strip()[32:276]
1850     GET_ELEMENT_BY_TAG_RES_OUTERDIV_TEXT = GET_ELEMENT_BY_TAG_RES_OUTERDIV_HTML[5:-6]
1851     GET_ELEMENT_BY_TAG_RES_INNERSPAN_HTML = GET_ELEMENT_BY_TAG_TEST_STRING.strip()[78:119]
1852     GET_ELEMENT_BY_TAG_RES_INNERSPAN_TEXT = GET_ELEMENT_BY_TAG_RES_INNERSPAN_HTML[6:-7]
1853
1854     def test_get_element_text_and_html_by_tag(self):
1855         html = self.GET_ELEMENT_BY_TAG_TEST_STRING
1856
1857         self.assertEqual(
1858             get_element_text_and_html_by_tag('div', html),
1859             (self.GET_ELEMENT_BY_TAG_RES_OUTERDIV_TEXT, self.GET_ELEMENT_BY_TAG_RES_OUTERDIV_HTML))
1860         self.assertEqual(
1861             get_element_text_and_html_by_tag('span', html),
1862             (self.GET_ELEMENT_BY_TAG_RES_INNERSPAN_TEXT, self.GET_ELEMENT_BY_TAG_RES_INNERSPAN_HTML))
1863         self.assertRaises(compat_HTMLParseError, get_element_text_and_html_by_tag, 'article', html)
1864
1865     def test_iri_to_uri(self):
1866         self.assertEqual(
1867             iri_to_uri('https://www.google.com/search?q=foo&ie=utf-8&oe=utf-8&client=firefox-b'),
1868             'https://www.google.com/search?q=foo&ie=utf-8&oe=utf-8&client=firefox-b')  # Same
1869         self.assertEqual(
1870             iri_to_uri('https://www.google.com/search?q=Käsesoßenrührlöffel'),  # German for cheese sauce stirring spoon
1871             'https://www.google.com/search?q=K%C3%A4seso%C3%9Fenr%C3%BChrl%C3%B6ffel')
1872         self.assertEqual(
1873             iri_to_uri('https://www.google.com/search?q=lt<+gt>+eq%3D+amp%26+percent%25+hash%23+colon%3A+tilde~#trash=?&garbage=#'),
1874             'https://www.google.com/search?q=lt%3C+gt%3E+eq%3D+amp%26+percent%25+hash%23+colon%3A+tilde~#trash=?&garbage=#')
1875         self.assertEqual(
1876             iri_to_uri('http://правозащита38.рф/category/news/'),
1877             'http://xn--38-6kcaak9aj5chl4a3g.xn--p1ai/category/news/')
1878         self.assertEqual(
1879             iri_to_uri('http://www.правозащита38.рф/category/news/'),
1880             'http://www.xn--38-6kcaak9aj5chl4a3g.xn--p1ai/category/news/')
1881         self.assertEqual(
1882             iri_to_uri('https://i❤.ws/emojidomain/👍👏🤝💪'),
1883             'https://xn--i-7iq.ws/emojidomain/%F0%9F%91%8D%F0%9F%91%8F%F0%9F%A4%9D%F0%9F%92%AA')
1884         self.assertEqual(
1885             iri_to_uri('http://日本語.jp/'),
1886             'http://xn--wgv71a119e.jp/')
1887         self.assertEqual(
1888             iri_to_uri('http://导航.中国/'),
1889             'http://xn--fet810g.xn--fiqs8s/')
1890
1891     def test_clean_podcast_url(self):
1892         self.assertEqual(clean_podcast_url('https://www.podtrac.com/pts/redirect.mp3/chtbl.com/track/5899E/traffic.megaphone.fm/HSW7835899191.mp3'), 'https://traffic.megaphone.fm/HSW7835899191.mp3')
1893         self.assertEqual(clean_podcast_url('https://play.podtrac.com/npr-344098539/edge1.pod.npr.org/anon.npr-podcasts/podcast/npr/waitwait/2020/10/20201003_waitwait_wwdtmpodcast201003-015621a5-f035-4eca-a9a1-7c118d90bc3c.mp3'), 'https://edge1.pod.npr.org/anon.npr-podcasts/podcast/npr/waitwait/2020/10/20201003_waitwait_wwdtmpodcast201003-015621a5-f035-4eca-a9a1-7c118d90bc3c.mp3')
1894         self.assertEqual(clean_podcast_url('https://pdst.fm/e/2.gum.fm/chtbl.com/track/chrt.fm/track/34D33/pscrb.fm/rss/p/traffic.megaphone.fm/ITLLC7765286967.mp3?updated=1687282661'), 'https://traffic.megaphone.fm/ITLLC7765286967.mp3?updated=1687282661')
1895         self.assertEqual(clean_podcast_url('https://pdst.fm/e/https://mgln.ai/e/441/www.buzzsprout.com/1121972/13019085-ep-252-the-deep-life-stack.mp3'), 'https://www.buzzsprout.com/1121972/13019085-ep-252-the-deep-life-stack.mp3')
1896
1897     def test_LazyList(self):
1898         it = list(range(10))
1899
1900         self.assertEqual(list(LazyList(it)), it)
1901         self.assertEqual(LazyList(it).exhaust(), it)
1902         self.assertEqual(LazyList(it)[5], it[5])
1903
1904         self.assertEqual(LazyList(it)[5:], it[5:])
1905         self.assertEqual(LazyList(it)[:5], it[:5])
1906         self.assertEqual(LazyList(it)[::2], it[::2])
1907         self.assertEqual(LazyList(it)[1::2], it[1::2])
1908         self.assertEqual(LazyList(it)[5::-1], it[5::-1])
1909         self.assertEqual(LazyList(it)[6:2:-2], it[6:2:-2])
1910         self.assertEqual(LazyList(it)[::-1], it[::-1])
1911
1912         self.assertTrue(LazyList(it))
1913         self.assertFalse(LazyList(range(0)))
1914         self.assertEqual(len(LazyList(it)), len(it))
1915         self.assertEqual(repr(LazyList(it)), repr(it))
1916         self.assertEqual(str(LazyList(it)), str(it))
1917
1918         self.assertEqual(list(LazyList(it, reverse=True)), it[::-1])
1919         self.assertEqual(list(reversed(LazyList(it))[::-1]), it)
1920         self.assertEqual(list(reversed(LazyList(it))[1:3:7]), it[::-1][1:3:7])
1921
1922     def test_LazyList_laziness(self):
1923
1924         def test(ll, idx, val, cache):
1925             self.assertEqual(ll[idx], val)
1926             self.assertEqual(ll._cache, list(cache))
1927
1928         ll = LazyList(range(10))
1929         test(ll, 0, 0, range(1))
1930         test(ll, 5, 5, range(6))
1931         test(ll, -3, 7, range(10))
1932
1933         ll = LazyList(range(10), reverse=True)
1934         test(ll, -1, 0, range(1))
1935         test(ll, 3, 6, range(10))
1936
1937         ll = LazyList(itertools.count())
1938         test(ll, 10, 10, range(11))
1939         ll = reversed(ll)
1940         test(ll, -15, 14, range(15))
1941
1942     def test_format_bytes(self):
1943         self.assertEqual(format_bytes(0), '0.00B')
1944         self.assertEqual(format_bytes(1000), '1000.00B')
1945         self.assertEqual(format_bytes(1024), '1.00KiB')
1946         self.assertEqual(format_bytes(1024**2), '1.00MiB')
1947         self.assertEqual(format_bytes(1024**3), '1.00GiB')
1948         self.assertEqual(format_bytes(1024**4), '1.00TiB')
1949         self.assertEqual(format_bytes(1024**5), '1.00PiB')
1950         self.assertEqual(format_bytes(1024**6), '1.00EiB')
1951         self.assertEqual(format_bytes(1024**7), '1.00ZiB')
1952         self.assertEqual(format_bytes(1024**8), '1.00YiB')
1953         self.assertEqual(format_bytes(1024**9), '1024.00YiB')
1954
1955     def test_hide_login_info(self):
1956         self.assertEqual(Config.hide_login_info(['-u', 'foo', '-p', 'bar']),
1957                          ['-u', 'PRIVATE', '-p', 'PRIVATE'])
1958         self.assertEqual(Config.hide_login_info(['-u']), ['-u'])
1959         self.assertEqual(Config.hide_login_info(['-u', 'foo', '-u', 'bar']),
1960                          ['-u', 'PRIVATE', '-u', 'PRIVATE'])
1961         self.assertEqual(Config.hide_login_info(['--username=foo']),
1962                          ['--username=PRIVATE'])
1963
1964     def test_locked_file(self):
1965         TEXT = 'test_locked_file\n'
1966         FILE = 'test_locked_file.ytdl'
1967         MODES = 'war'  # Order is important
1968
1969         try:
1970             for lock_mode in MODES:
1971                 with locked_file(FILE, lock_mode, False) as f:
1972                     if lock_mode == 'r':
1973                         self.assertEqual(f.read(), TEXT * 2, 'Wrong file content')
1974                     else:
1975                         f.write(TEXT)
1976                     for test_mode in MODES:
1977                         testing_write = test_mode != 'r'
1978                         try:
1979                             with locked_file(FILE, test_mode, False):
1980                                 pass
1981                         except (BlockingIOError, PermissionError):
1982                             if not testing_write:  # FIXME: blocked read access
1983                                 print(f'Known issue: Exclusive lock ({lock_mode}) blocks read access ({test_mode})')
1984                                 continue
1985                             self.assertTrue(testing_write, f'{test_mode} is blocked by {lock_mode}')
1986                         else:
1987                             self.assertFalse(testing_write, f'{test_mode} is not blocked by {lock_mode}')
1988         finally:
1989             with contextlib.suppress(OSError):
1990                 os.remove(FILE)
1991
1992     def test_determine_file_encoding(self):
1993         self.assertEqual(determine_file_encoding(b''), (None, 0))
1994         self.assertEqual(determine_file_encoding(b'--verbose -x --audio-format mkv\n'), (None, 0))
1995
1996         self.assertEqual(determine_file_encoding(b'\xef\xbb\xbf'), ('utf-8', 3))
1997         self.assertEqual(determine_file_encoding(b'\x00\x00\xfe\xff'), ('utf-32-be', 4))
1998         self.assertEqual(determine_file_encoding(b'\xff\xfe'), ('utf-16-le', 2))
1999
2000         self.assertEqual(determine_file_encoding(b'\xff\xfe# coding: utf-8\n--verbose'), ('utf-16-le', 2))
2001
2002         self.assertEqual(determine_file_encoding(b'# coding: utf-8\n--verbose'), ('utf-8', 0))
2003         self.assertEqual(determine_file_encoding(b'# coding: someencodinghere-12345\n--verbose'), ('someencodinghere-12345', 0))
2004
2005         self.assertEqual(determine_file_encoding(b'#coding:utf-8\n--verbose'), ('utf-8', 0))
2006         self.assertEqual(determine_file_encoding(b'#  coding:   utf-8   \r\n--verbose'), ('utf-8', 0))
2007
2008         self.assertEqual(determine_file_encoding('# coding: utf-32-be'.encode('utf-32-be')), ('utf-32-be', 0))
2009         self.assertEqual(determine_file_encoding('# coding: utf-16-le'.encode('utf-16-le')), ('utf-16-le', 0))
2010
2011     def test_get_compatible_ext(self):
2012         self.assertEqual(get_compatible_ext(
2013             vcodecs=[None], acodecs=[None, None], vexts=['mp4'], aexts=['m4a', 'm4a']), 'mkv')
2014         self.assertEqual(get_compatible_ext(
2015             vcodecs=[None], acodecs=[None], vexts=['flv'], aexts=['flv']), 'flv')
2016
2017         self.assertEqual(get_compatible_ext(
2018             vcodecs=[None], acodecs=[None], vexts=['mp4'], aexts=['m4a']), 'mp4')
2019         self.assertEqual(get_compatible_ext(
2020             vcodecs=[None], acodecs=[None], vexts=['mp4'], aexts=['webm']), 'mkv')
2021         self.assertEqual(get_compatible_ext(
2022             vcodecs=[None], acodecs=[None], vexts=['webm'], aexts=['m4a']), 'mkv')
2023         self.assertEqual(get_compatible_ext(
2024             vcodecs=[None], acodecs=[None], vexts=['webm'], aexts=['webm']), 'webm')
2025         self.assertEqual(get_compatible_ext(
2026             vcodecs=[None], acodecs=[None], vexts=['webm'], aexts=['weba']), 'webm')
2027
2028         self.assertEqual(get_compatible_ext(
2029             vcodecs=['h264'], acodecs=['mp4a'], vexts=['mov'], aexts=['m4a']), 'mp4')
2030         self.assertEqual(get_compatible_ext(
2031             vcodecs=['av01.0.12M.08'], acodecs=['opus'], vexts=['mp4'], aexts=['webm']), 'webm')
2032
2033         self.assertEqual(get_compatible_ext(
2034             vcodecs=['vp9'], acodecs=['opus'], vexts=['webm'], aexts=['webm'], preferences=['flv', 'mp4']), 'mp4')
2035         self.assertEqual(get_compatible_ext(
2036             vcodecs=['av1'], acodecs=['mp4a'], vexts=['webm'], aexts=['m4a'], preferences=('webm', 'mkv')), 'mkv')
2037
2038     def test_try_call(self):
2039         def total(*x, **kwargs):
2040             return sum(x) + sum(kwargs.values())
2041
2042         self.assertEqual(try_call(None), None,
2043                          msg='not a fn should give None')
2044         self.assertEqual(try_call(lambda: 1), 1,
2045                          msg='int fn with no expected_type should give int')
2046         self.assertEqual(try_call(lambda: 1, expected_type=int), 1,
2047                          msg='int fn with expected_type int should give int')
2048         self.assertEqual(try_call(lambda: 1, expected_type=dict), None,
2049                          msg='int fn with wrong expected_type should give None')
2050         self.assertEqual(try_call(total, args=(0, 1, 0), expected_type=int), 1,
2051                          msg='fn should accept arglist')
2052         self.assertEqual(try_call(total, kwargs={'a': 0, 'b': 1, 'c': 0}, expected_type=int), 1,
2053                          msg='fn should accept kwargs')
2054         self.assertEqual(try_call(lambda: 1, expected_type=dict), None,
2055                          msg='int fn with no expected_type should give None')
2056         self.assertEqual(try_call(lambda x: {}, total, args=(42, ), expected_type=int), 42,
2057                          msg='expect first int result with expected_type int')
2058
2059     def test_variadic(self):
2060         self.assertEqual(variadic(None), (None, ))
2061         self.assertEqual(variadic('spam'), ('spam', ))
2062         self.assertEqual(variadic('spam', allowed_types=dict), 'spam')
2063         with warnings.catch_warnings():
2064             warnings.simplefilter('ignore')
2065             self.assertEqual(variadic('spam', allowed_types=[dict]), 'spam')
2066
2067     def test_http_header_dict(self):
2068         headers = HTTPHeaderDict()
2069         headers['ytdl-test'] = b'0'
2070         self.assertEqual(list(headers.items()), [('Ytdl-Test', '0')])
2071         headers['ytdl-test'] = 1
2072         self.assertEqual(list(headers.items()), [('Ytdl-Test', '1')])
2073         headers['Ytdl-test'] = '2'
2074         self.assertEqual(list(headers.items()), [('Ytdl-Test', '2')])
2075         self.assertTrue('ytDl-Test' in headers)
2076         self.assertEqual(str(headers), str(dict(headers)))
2077         self.assertEqual(repr(headers), str(dict(headers)))
2078
2079         headers.update({'X-dlp': 'data'})
2080         self.assertEqual(set(headers.items()), {('Ytdl-Test', '2'), ('X-Dlp', 'data')})
2081         self.assertEqual(dict(headers), {'Ytdl-Test': '2', 'X-Dlp': 'data'})
2082         self.assertEqual(len(headers), 2)
2083         self.assertEqual(headers.copy(), headers)
2084         headers2 = HTTPHeaderDict({'X-dlp': 'data3'}, **headers, **{'X-dlp': 'data2'})
2085         self.assertEqual(set(headers2.items()), {('Ytdl-Test', '2'), ('X-Dlp', 'data2')})
2086         self.assertEqual(len(headers2), 2)
2087         headers2.clear()
2088         self.assertEqual(len(headers2), 0)
2089
2090         # ensure we prefer latter headers
2091         headers3 = HTTPHeaderDict({'Ytdl-TeSt': 1}, {'Ytdl-test': 2})
2092         self.assertEqual(set(headers3.items()), {('Ytdl-Test', '2')})
2093         del headers3['ytdl-tesT']
2094         self.assertEqual(dict(headers3), {})
2095
2096         headers4 = HTTPHeaderDict({'ytdl-test': 'data;'})
2097         self.assertEqual(set(headers4.items()), {('Ytdl-Test', 'data;')})
2098
2099         # common mistake: strip whitespace from values
2100         # https://github.com/yt-dlp/yt-dlp/issues/8729
2101         headers5 = HTTPHeaderDict({'ytdl-test': ' data; '})
2102         self.assertEqual(set(headers5.items()), {('Ytdl-Test', 'data;')})
2103
2104     def test_extract_basic_auth(self):
2105         assert extract_basic_auth('http://:foo.bar') == ('http://:foo.bar', None)
2106         assert extract_basic_auth('http://foo.bar') == ('http://foo.bar', None)
2107         assert extract_basic_auth('http://@foo.bar') == ('http://foo.bar', 'Basic Og==')
2108         assert extract_basic_auth('http://:pass@foo.bar') == ('http://foo.bar', 'Basic OnBhc3M=')
2109         assert extract_basic_auth('http://user:@foo.bar') == ('http://foo.bar', 'Basic dXNlcjo=')
2110         assert extract_basic_auth('http://user:pass@foo.bar') == ('http://foo.bar', 'Basic dXNlcjpwYXNz')
2111
2112     @unittest.skipUnless(os.name == 'nt', 'Only relevant on Windows')
2113     def test_windows_escaping(self):
2114         tests = [
2115             'test"&',
2116             '%CMDCMDLINE:~-1%&',
2117             'a\nb',
2118             '"',
2119             '\\',
2120             '!',
2121             '^!',
2122             'a \\ b',
2123             'a \\" b',
2124             'a \\ b\\',
2125             # We replace \r with \n
2126             ('a\r\ra', 'a\n\na'),
2127         ]
2128
2129         def run_shell(args):
2130             stdout, stderr, error = Popen.run(
2131                 args, text=True, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
2132             assert not stderr
2133             assert not error
2134             return stdout
2135
2136         for argument in tests:
2137             if isinstance(argument, str):
2138                 expected = argument
2139             else:
2140                 argument, expected = argument
2141
2142             args = [sys.executable, '-c', 'import sys; print(end=sys.argv[1])', argument, 'end']
2143             assert run_shell(args) == expected
2144             assert run_shell(shell_quote(args, shell=True)) == expected
2145
2146     def test_partial_application(self):
2147         assert callable(int_or_none(scale=10)), 'missing positional parameter should apply partially'
2148         assert int_or_none(10, scale=0.1) == 100, 'positionally passed argument should call function'
2149         assert int_or_none(v=10) == 10, 'keyword passed positional should call function'
2150         assert int_or_none(scale=0.1)(10) == 100, 'call after partial application should call the function'
2151
2152
2153 if __name__ == '__main__':
2154     unittest.main()