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

   1 #!/usr/bin/env python
   2 # coding: utf-8
   3
   4 from __future__ import unicode_literals
   5
   6 # Allow direct execution
   7 import os
   8 import sys
   9 import unittest
  10 sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
  11
  12
  13 # Various small unit tests
  14 import io
  15 import json
  16 import xml.etree.ElementTree
  17
  18 from youtube_dl.utils import (
  19     age_restricted,
  20     args_to_str,
  21     encode_base_n,
  22     clean_html,
  23     date_from_str,
  24     DateRange,
  25     detect_exe_version,
  26     determine_ext,
  27     dict_get,
  28     encode_compat_str,
  29     encodeFilename,
  30     escape_rfc3986,
  31     escape_url,
  32     extract_attributes,
  33     ExtractorError,
  34     find_xpath_attr,
  35     fix_xml_ampersands,
  36     get_element_by_class,
  37     get_element_by_attribute,
  38     get_elements_by_class,
  39     get_elements_by_attribute,
  40     InAdvancePagedList,
  41     intlist_to_bytes,
  42     is_html,
  43     js_to_json,
  44     limit_length,
  45     mimetype2ext,
  46     month_by_name,
  47     multipart_encode,
  48     ohdave_rsa_encrypt,
  49     OnDemandPagedList,
  50     orderedSet,
  51     parse_age_limit,
  52     parse_duration,
  53     parse_filesize,
  54     parse_count,
  55     parse_iso8601,
  56     pkcs1pad,
  57     read_batch_urls,
  58     sanitize_filename,
  59     sanitize_path,
  60     sanitize_url,
  61     expand_path,
  62     prepend_extension,
  63     replace_extension,
  64     remove_start,
  65     remove_end,
  66     remove_quotes,
  67     shell_quote,
  68     smuggle_url,
  69     str_to_int,
  70     strip_jsonp,
  71     timeconvert,
  72     unescapeHTML,
  73     unified_strdate,
  74     unified_timestamp,
  75     unsmuggle_url,
  76     uppercase_escape,
  77     lowercase_escape,
  78     url_basename,
  79     base_url,
  80     urljoin,
  81     urlencode_postdata,
  82     urshift,
  83     update_url_query,
  84     version_tuple,
  85     xpath_with_ns,
  86     xpath_element,
  87     xpath_text,
  88     xpath_attr,
  89     render_table,
  90     match_str,
  91     parse_dfxp_time_expr,
  92     dfxp2srt,
  93     cli_option,
  94     cli_valueless_option,
  95     cli_bool_option,
  96     parse_codecs,
  97 )
  98 from youtube_dl.compat import (
  99     compat_chr,
 100     compat_etree_fromstring,
 101     compat_getenv,
 102     compat_os_name,
 103     compat_setenv,
 104     compat_urlparse,
 105     compat_parse_qs,
 106 )
 107
 108
 109 class TestUtil(unittest.TestCase):
 110     def test_timeconvert(self):
 111         self.assertTrue(timeconvert('') is None)
 112         self.assertTrue(timeconvert('bougrg') is None)
 113
 114     def test_sanitize_filename(self):
 115         self.assertEqual(sanitize_filename('abc'), 'abc')
 116         self.assertEqual(sanitize_filename('abc_d-e'), 'abc_d-e')
 117
 118         self.assertEqual(sanitize_filename('123'), '123')
 119
 120         self.assertEqual('abc_de', sanitize_filename('abc/de'))
 121         self.assertFalse('/' in sanitize_filename('abc/de///'))
 122
 123         self.assertEqual('abc_de', sanitize_filename('abc/<>\\*|de'))
 124         self.assertEqual('xxx', sanitize_filename('xxx/<>\\*|'))
 125         self.assertEqual('yes no', sanitize_filename('yes? no'))
 126         self.assertEqual('this - that', sanitize_filename('this: that'))
 127
 128         self.assertEqual(sanitize_filename('AT&T'), 'AT&T')
 129         aumlaut = 'ä'
 130         self.assertEqual(sanitize_filename(aumlaut), aumlaut)
 131         tests = '\u043a\u0438\u0440\u0438\u043b\u043b\u0438\u0446\u0430'
 132         self.assertEqual(sanitize_filename(tests), tests)
 133
 134         self.assertEqual(
 135             sanitize_filename('New World record at 0:12:34'),
 136             'New World record at 0_12_34')
 137
 138         self.assertEqual(sanitize_filename('--gasdgf'), '_-gasdgf')
 139         self.assertEqual(sanitize_filename('--gasdgf', is_id=True), '--gasdgf')
 140         self.assertEqual(sanitize_filename('.gasdgf'), 'gasdgf')
 141         self.assertEqual(sanitize_filename('.gasdgf', is_id=True), '.gasdgf')
 142
 143         forbidden = '"\0\\/'
 144         for fc in forbidden:
 145             for fbc in forbidden:
 146                 self.assertTrue(fbc not in sanitize_filename(fc))
 147
 148     def test_sanitize_filename_restricted(self):
 149         self.assertEqual(sanitize_filename('abc', restricted=True), 'abc')
 150         self.assertEqual(sanitize_filename('abc_d-e', restricted=True), 'abc_d-e')
 151
 152         self.assertEqual(sanitize_filename('123', restricted=True), '123')
 153
 154         self.assertEqual('abc_de', sanitize_filename('abc/de', restricted=True))
 155         self.assertFalse('/' in sanitize_filename('abc/de///', restricted=True))
 156
 157         self.assertEqual('abc_de', sanitize_filename('abc/<>\\*|de', restricted=True))
 158         self.assertEqual('xxx', sanitize_filename('xxx/<>\\*|', restricted=True))
 159         self.assertEqual('yes_no', sanitize_filename('yes? no', restricted=True))
 160         self.assertEqual('this_-_that', sanitize_filename('this: that', restricted=True))
 161
 162         tests = 'aäb\u4e2d\u56fd\u7684c'
 163         self.assertEqual(sanitize_filename(tests, restricted=True), 'aab_c')
 164         self.assertTrue(sanitize_filename('\xf6', restricted=True) != '')  # No empty filename
 165
 166         forbidden = '"\0\\/&!: \'\t\n()[]{}$;`^,#'
 167         for fc in forbidden:
 168             for fbc in forbidden:
 169                 self.assertTrue(fbc not in sanitize_filename(fc, restricted=True))
 170
 171         # Handle a common case more neatly
 172         self.assertEqual(sanitize_filename('\u5927\u58f0\u5e26 - Song', restricted=True), 'Song')
 173         self.assertEqual(sanitize_filename('\u603b\u7edf: Speech', restricted=True), 'Speech')
 174         # .. but make sure the file name is never empty
 175         self.assertTrue(sanitize_filename('-', restricted=True) != '')
 176         self.assertTrue(sanitize_filename(':', restricted=True) != '')
 177
 178         self.assertEqual(sanitize_filename(
 179             'ÂÃÄÀÁÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖŐØŒÙÚÛÜŰÝÞßàáâãäåæçèéêëìíîïðñòóôõöőøœùúûüűýþÿ', restricted=True),
 180             'AAAAAAAECEEEEIIIIDNOOOOOOOOEUUUUUYPssaaaaaaaeceeeeiiiionooooooooeuuuuuypy')
 181
 182     def test_sanitize_ids(self):
 183         self.assertEqual(sanitize_filename('_n_cd26wFpw', is_id=True), '_n_cd26wFpw')
 184         self.assertEqual(sanitize_filename('_BD_eEpuzXw', is_id=True), '_BD_eEpuzXw')
 185         self.assertEqual(sanitize_filename('N0Y__7-UOdI', is_id=True), 'N0Y__7-UOdI')
 186
 187     def test_sanitize_path(self):
 188         if sys.platform != 'win32':
 189             return
 190
 191         self.assertEqual(sanitize_path('abc'), 'abc')
 192         self.assertEqual(sanitize_path('abc/def'), 'abc\\def')
 193         self.assertEqual(sanitize_path('abc\\def'), 'abc\\def')
 194         self.assertEqual(sanitize_path('abc|def'), 'abc#def')
 195         self.assertEqual(sanitize_path('<>:"|?*'), '#######')
 196         self.assertEqual(sanitize_path('C:/abc/def'), 'C:\\abc\\def')
 197         self.assertEqual(sanitize_path('C?:/abc/def'), 'C##\\abc\\def')
 198
 199         self.assertEqual(sanitize_path('\\\\?\\UNC\\ComputerName\\abc'), '\\\\?\\UNC\\ComputerName\\abc')
 200         self.assertEqual(sanitize_path('\\\\?\\UNC/ComputerName/abc'), '\\\\?\\UNC\\ComputerName\\abc')
 201
 202         self.assertEqual(sanitize_path('\\\\?\\C:\\abc'), '\\\\?\\C:\\abc')
 203         self.assertEqual(sanitize_path('\\\\?\\C:/abc'), '\\\\?\\C:\\abc')
 204         self.assertEqual(sanitize_path('\\\\?\\C:\\ab?c\\de:f'), '\\\\?\\C:\\ab#c\\de#f')
 205         self.assertEqual(sanitize_path('\\\\?\\C:\\abc'), '\\\\?\\C:\\abc')
 206
 207         self.assertEqual(
 208             sanitize_path('youtube/%(uploader)s/%(autonumber)s-%(title)s-%(upload_date)s.%(ext)s'),
 209             'youtube\\%(uploader)s\\%(autonumber)s-%(title)s-%(upload_date)s.%(ext)s')
 210
 211         self.assertEqual(
 212             sanitize_path('youtube/TheWreckingYard ./00001-Not bad, Especially for Free! (1987 Yamaha 700)-20141116.mp4.part'),
 213             'youtube\\TheWreckingYard #\\00001-Not bad, Especially for Free! (1987 Yamaha 700)-20141116.mp4.part')
 214         self.assertEqual(sanitize_path('abc/def...'), 'abc\\def..#')
 215         self.assertEqual(sanitize_path('abc.../def'), 'abc..#\\def')
 216         self.assertEqual(sanitize_path('abc.../def...'), 'abc..#\\def..#')
 217
 218         self.assertEqual(sanitize_path('../abc'), '..\\abc')
 219         self.assertEqual(sanitize_path('../../abc'), '..\\..\\abc')
 220         self.assertEqual(sanitize_path('./abc'), 'abc')
 221         self.assertEqual(sanitize_path('./../abc'), '..\\abc')
 222
 223     def test_sanitize_url(self):
 224         self.assertEqual(sanitize_url('//foo.bar'), 'http://foo.bar')
 225         self.assertEqual(sanitize_url('httpss://foo.bar'), 'https://foo.bar')
 226         self.assertEqual(sanitize_url('rmtps://foo.bar'), 'rtmps://foo.bar')
 227         self.assertEqual(sanitize_url('https://foo.bar'), 'https://foo.bar')
 228
 229     def test_expand_path(self):
 230         def env(var):
 231             return '%{0}%'.format(var) if sys.platform == 'win32' else '${0}'.format(var)
 232
 233         compat_setenv('YOUTUBE_DL_EXPATH_PATH', 'expanded')
 234         self.assertEqual(expand_path(env('YOUTUBE_DL_EXPATH_PATH')), 'expanded')
 235         self.assertEqual(expand_path(env('HOME')), compat_getenv('HOME'))
 236         self.assertEqual(expand_path('~'), compat_getenv('HOME'))
 237         self.assertEqual(
 238             expand_path('~/%s' % env('YOUTUBE_DL_EXPATH_PATH')),
 239             '%s/expanded' % compat_getenv('HOME'))
 240
 241     def test_prepend_extension(self):
 242         self.assertEqual(prepend_extension('abc.ext', 'temp'), 'abc.temp.ext')
 243         self.assertEqual(prepend_extension('abc.ext', 'temp', 'ext'), 'abc.temp.ext')
 244         self.assertEqual(prepend_extension('abc.unexpected_ext', 'temp', 'ext'), 'abc.unexpected_ext.temp')
 245         self.assertEqual(prepend_extension('abc', 'temp'), 'abc.temp')
 246         self.assertEqual(prepend_extension('.abc', 'temp'), '.abc.temp')
 247         self.assertEqual(prepend_extension('.abc.ext', 'temp'), '.abc.temp.ext')
 248
 249     def test_replace_extension(self):
 250         self.assertEqual(replace_extension('abc.ext', 'temp'), 'abc.temp')
 251         self.assertEqual(replace_extension('abc.ext', 'temp', 'ext'), 'abc.temp')
 252         self.assertEqual(replace_extension('abc.unexpected_ext', 'temp', 'ext'), 'abc.unexpected_ext.temp')
 253         self.assertEqual(replace_extension('abc', 'temp'), 'abc.temp')
 254         self.assertEqual(replace_extension('.abc', 'temp'), '.abc.temp')
 255         self.assertEqual(replace_extension('.abc.ext', 'temp'), '.abc.temp')
 256
 257     def test_remove_start(self):
 258         self.assertEqual(remove_start(None, 'A - '), None)
 259         self.assertEqual(remove_start('A - B', 'A - '), 'B')
 260         self.assertEqual(remove_start('B - A', 'A - '), 'B - A')
 261
 262     def test_remove_end(self):
 263         self.assertEqual(remove_end(None, ' - B'), None)
 264         self.assertEqual(remove_end('A - B', ' - B'), 'A')
 265         self.assertEqual(remove_end('B - A', ' - B'), 'B - A')
 266
 267     def test_remove_quotes(self):
 268         self.assertEqual(remove_quotes(None), None)
 269         self.assertEqual(remove_quotes('"'), '"')
 270         self.assertEqual(remove_quotes("'"), "'")
 271         self.assertEqual(remove_quotes(';'), ';')
 272         self.assertEqual(remove_quotes('";'), '";')
 273         self.assertEqual(remove_quotes('""'), '')
 274         self.assertEqual(remove_quotes('";"'), ';')
 275
 276     def test_ordered_set(self):
 277         self.assertEqual(orderedSet([1, 1, 2, 3, 4, 4, 5, 6, 7, 3, 5]), [1, 2, 3, 4, 5, 6, 7])
 278         self.assertEqual(orderedSet([]), [])
 279         self.assertEqual(orderedSet([1]), [1])
 280         # keep the list ordered
 281         self.assertEqual(orderedSet([135, 1, 1, 1]), [135, 1])
 282
 283     def test_unescape_html(self):
 284         self.assertEqual(unescapeHTML('%20;'), '%20;')
 285         self.assertEqual(unescapeHTML('&#x2F;'), '/')
 286         self.assertEqual(unescapeHTML('&#47;'), '/')
 287         self.assertEqual(unescapeHTML('&eacute;'), 'é')
 288         self.assertEqual(unescapeHTML('&#2013266066;'), '&#2013266066;')
 289         self.assertEqual(unescapeHTML('&a&quot;'), '&a"')
 290         # HTML5 entities
 291         self.assertEqual(unescapeHTML('&period;&apos;'), '.\'')
 292
 293     def test_date_from_str(self):
 294         self.assertEqual(date_from_str('yesterday'), date_from_str('now-1day'))
 295         self.assertEqual(date_from_str('now+7day'), date_from_str('now+1week'))
 296         self.assertEqual(date_from_str('now+14day'), date_from_str('now+2week'))
 297         self.assertEqual(date_from_str('now+365day'), date_from_str('now+1year'))
 298         self.assertEqual(date_from_str('now+30day'), date_from_str('now+1month'))
 299
 300     def test_daterange(self):
 301         _20century = DateRange("19000101", "20000101")
 302         self.assertFalse("17890714" in _20century)
 303         _ac = DateRange("00010101")
 304         self.assertTrue("19690721" in _ac)
 305         _firstmilenium = DateRange(end="10000101")
 306         self.assertTrue("07110427" in _firstmilenium)
 307
 308     def test_unified_dates(self):
 309         self.assertEqual(unified_strdate('December 21, 2010'), '20101221')
 310         self.assertEqual(unified_strdate('8/7/2009'), '20090708')
 311         self.assertEqual(unified_strdate('Dec 14, 2012'), '20121214')
 312         self.assertEqual(unified_strdate('2012/10/11 01:56:38 +0000'), '20121011')
 313         self.assertEqual(unified_strdate('1968 12 10'), '19681210')
 314         self.assertEqual(unified_strdate('1968-12-10'), '19681210')
 315         self.assertEqual(unified_strdate('28/01/2014 21:00:00 +0100'), '20140128')
 316         self.assertEqual(
 317             unified_strdate('11/26/2014 11:30:00 AM PST', day_first=False),
 318             '20141126')
 319         self.assertEqual(
 320             unified_strdate('2/2/2015 6:47:40 PM', day_first=False),
 321             '20150202')
 322         self.assertEqual(unified_strdate('Feb 14th 2016 5:45PM'), '20160214')
 323         self.assertEqual(unified_strdate('25-09-2014'), '20140925')
 324         self.assertEqual(unified_strdate('27.02.2016 17:30'), '20160227')
 325         self.assertEqual(unified_strdate('UNKNOWN DATE FORMAT'), None)
 326         self.assertEqual(unified_strdate('Feb 7, 2016 at 6:35 pm'), '20160207')
 327         self.assertEqual(unified_strdate('July 15th, 2013'), '20130715')
 328         self.assertEqual(unified_strdate('September 1st, 2013'), '20130901')
 329         self.assertEqual(unified_strdate('Sep 2nd, 2013'), '20130902')
 330
 331     def test_unified_timestamps(self):
 332         self.assertEqual(unified_timestamp('December 21, 2010'), 1292889600)
 333         self.assertEqual(unified_timestamp('8/7/2009'), 1247011200)
 334         self.assertEqual(unified_timestamp('Dec 14, 2012'), 1355443200)
 335         self.assertEqual(unified_timestamp('2012/10/11 01:56:38 +0000'), 1349920598)
 336         self.assertEqual(unified_timestamp('1968 12 10'), -33436800)
 337         self.assertEqual(unified_timestamp('1968-12-10'), -33436800)
 338         self.assertEqual(unified_timestamp('28/01/2014 21:00:00 +0100'), 1390939200)
 339         self.assertEqual(
 340             unified_timestamp('11/26/2014 11:30:00 AM PST', day_first=False),
 341             1417001400)
 342         self.assertEqual(
 343             unified_timestamp('2/2/2015 6:47:40 PM', day_first=False),
 344             1422902860)
 345         self.assertEqual(unified_timestamp('Feb 14th 2016 5:45PM'), 1455471900)
 346         self.assertEqual(unified_timestamp('25-09-2014'), 1411603200)
 347         self.assertEqual(unified_timestamp('27.02.2016 17:30'), 1456594200)
 348         self.assertEqual(unified_timestamp('UNKNOWN DATE FORMAT'), None)
 349         self.assertEqual(unified_timestamp('May 16, 2016 11:15 PM'), 1463440500)
 350         self.assertEqual(unified_timestamp('Feb 7, 2016 at 6:35 pm'), 1454870100)
 351         self.assertEqual(unified_timestamp('2017-03-30T17:52:41Q'), 1490896361)
 352         self.assertEqual(unified_timestamp('Sep 11, 2013 | 5:49 AM'), 1378878540)
 353         self.assertEqual(unified_timestamp('December 15, 2017 at 7:49 am'), 1513324140)
 354
 355     def test_determine_ext(self):
 356         self.assertEqual(determine_ext('http://example.com/foo/bar.mp4/?download'), 'mp4')
 357         self.assertEqual(determine_ext('http://example.com/foo/bar/?download', None), None)
 358         self.assertEqual(determine_ext('http://example.com/foo/bar.nonext/?download', None), None)
 359         self.assertEqual(determine_ext('http://example.com/foo/bar/mp4?download', None), None)
 360         self.assertEqual(determine_ext('http://example.com/foo/bar.m3u8//?download'), 'm3u8')
 361
 362     def test_find_xpath_attr(self):
 363         testxml = '''<root>
 364             <node/>
 365             <node x="a"/>
 366             <node x="a" y="c" />
 367             <node x="b" y="d" />
 368             <node x="" />
 369         </root>'''
 370         doc = compat_etree_fromstring(testxml)
 371
 372         self.assertEqual(find_xpath_attr(doc, './/fourohfour', 'n'), None)
 373         self.assertEqual(find_xpath_attr(doc, './/fourohfour', 'n', 'v'), None)
 374         self.assertEqual(find_xpath_attr(doc, './/node', 'n'), None)
 375         self.assertEqual(find_xpath_attr(doc, './/node', 'n', 'v'), None)
 376         self.assertEqual(find_xpath_attr(doc, './/node', 'x'), doc[1])
 377         self.assertEqual(find_xpath_attr(doc, './/node', 'x', 'a'), doc[1])
 378         self.assertEqual(find_xpath_attr(doc, './/node', 'x', 'b'), doc[3])
 379         self.assertEqual(find_xpath_attr(doc, './/node', 'y'), doc[2])
 380         self.assertEqual(find_xpath_attr(doc, './/node', 'y', 'c'), doc[2])
 381         self.assertEqual(find_xpath_attr(doc, './/node', 'y', 'd'), doc[3])
 382         self.assertEqual(find_xpath_attr(doc, './/node', 'x', ''), doc[4])
 383
 384     def test_xpath_with_ns(self):
 385         testxml = '''<root xmlns:media="http://example.com/">
 386             <media:song>
 387                 <media:author>The Author</media:author>
 388                 <url>http://server.com/download.mp3</url>
 389             </media:song>
 390         </root>'''
 391         doc = compat_etree_fromstring(testxml)
 392         find = lambda p: doc.find(xpath_with_ns(p, {'media': 'http://example.com/'}))
 393         self.assertTrue(find('media:song') is not None)
 394         self.assertEqual(find('media:song/media:author').text, 'The Author')
 395         self.assertEqual(find('media:song/url').text, 'http://server.com/download.mp3')
 396
 397     def test_xpath_element(self):
 398         doc = xml.etree.ElementTree.Element('root')
 399         div = xml.etree.ElementTree.SubElement(doc, 'div')
 400         p = xml.etree.ElementTree.SubElement(div, 'p')
 401         p.text = 'Foo'
 402         self.assertEqual(xpath_element(doc, 'div/p'), p)
 403         self.assertEqual(xpath_element(doc, ['div/p']), p)
 404         self.assertEqual(xpath_element(doc, ['div/bar', 'div/p']), p)
 405         self.assertEqual(xpath_element(doc, 'div/bar', default='default'), 'default')
 406         self.assertEqual(xpath_element(doc, ['div/bar'], default='default'), 'default')
 407         self.assertTrue(xpath_element(doc, 'div/bar') is None)
 408         self.assertTrue(xpath_element(doc, ['div/bar']) is None)
 409         self.assertTrue(xpath_element(doc, ['div/bar'], 'div/baz') is None)
 410         self.assertRaises(ExtractorError, xpath_element, doc, 'div/bar', fatal=True)
 411         self.assertRaises(ExtractorError, xpath_element, doc, ['div/bar'], fatal=True)
 412         self.assertRaises(ExtractorError, xpath_element, doc, ['div/bar', 'div/baz'], fatal=True)
 413
 414     def test_xpath_text(self):
 415         testxml = '''<root>
 416             <div>
 417                 <p>Foo</p>
 418             </div>
 419         </root>'''
 420         doc = compat_etree_fromstring(testxml)
 421         self.assertEqual(xpath_text(doc, 'div/p'), 'Foo')
 422         self.assertEqual(xpath_text(doc, 'div/bar', default='default'), 'default')
 423         self.assertTrue(xpath_text(doc, 'div/bar') is None)
 424         self.assertRaises(ExtractorError, xpath_text, doc, 'div/bar', fatal=True)
 425
 426     def test_xpath_attr(self):
 427         testxml = '''<root>
 428             <div>
 429                 <p x="a">Foo</p>
 430             </div>
 431         </root>'''
 432         doc = compat_etree_fromstring(testxml)
 433         self.assertEqual(xpath_attr(doc, 'div/p', 'x'), 'a')
 434         self.assertEqual(xpath_attr(doc, 'div/bar', 'x'), None)
 435         self.assertEqual(xpath_attr(doc, 'div/p', 'y'), None)
 436         self.assertEqual(xpath_attr(doc, 'div/bar', 'x', default='default'), 'default')
 437         self.assertEqual(xpath_attr(doc, 'div/p', 'y', default='default'), 'default')
 438         self.assertRaises(ExtractorError, xpath_attr, doc, 'div/bar', 'x', fatal=True)
 439         self.assertRaises(ExtractorError, xpath_attr, doc, 'div/p', 'y', fatal=True)
 440
 441     def test_smuggle_url(self):
 442         data = {"ö": "ö", "abc": [3]}
 443         url = 'https://foo.bar/baz?x=y#a'
 444         smug_url = smuggle_url(url, data)
 445         unsmug_url, unsmug_data = unsmuggle_url(smug_url)
 446         self.assertEqual(url, unsmug_url)
 447         self.assertEqual(data, unsmug_data)
 448
 449         res_url, res_data = unsmuggle_url(url)
 450         self.assertEqual(res_url, url)
 451         self.assertEqual(res_data, None)
 452
 453         smug_url = smuggle_url(url, {'a': 'b'})
 454         smug_smug_url = smuggle_url(smug_url, {'c': 'd'})
 455         res_url, res_data = unsmuggle_url(smug_smug_url)
 456         self.assertEqual(res_url, url)
 457         self.assertEqual(res_data, {'a': 'b', 'c': 'd'})
 458
 459     def test_shell_quote(self):
 460         args = ['ffmpeg', '-i', encodeFilename('ñ€ß\'.mp4')]
 461         self.assertEqual(
 462             shell_quote(args),
 463             """ffmpeg -i 'ñ€ß'"'"'.mp4'""" if compat_os_name != 'nt' else '''ffmpeg -i "ñ€ß'.mp4"''')
 464
 465     def test_str_to_int(self):
 466         self.assertEqual(str_to_int('123,456'), 123456)
 467         self.assertEqual(str_to_int('123.456'), 123456)
 468
 469     def test_url_basename(self):
 470         self.assertEqual(url_basename('http://foo.de/'), '')
 471         self.assertEqual(url_basename('http://foo.de/bar/baz'), 'baz')
 472         self.assertEqual(url_basename('http://foo.de/bar/baz?x=y'), 'baz')
 473         self.assertEqual(url_basename('http://foo.de/bar/baz#x=y'), 'baz')
 474         self.assertEqual(url_basename('http://foo.de/bar/baz/'), 'baz')
 475         self.assertEqual(
 476             url_basename('http://media.w3.org/2010/05/sintel/trailer.mp4'),
 477             'trailer.mp4')
 478
 479     def test_base_url(self):
 480         self.assertEqual(base_url('http://foo.de/'), 'http://foo.de/')
 481         self.assertEqual(base_url('http://foo.de/bar'), 'http://foo.de/')
 482         self.assertEqual(base_url('http://foo.de/bar/'), 'http://foo.de/bar/')
 483         self.assertEqual(base_url('http://foo.de/bar/baz'), 'http://foo.de/bar/')
 484         self.assertEqual(base_url('http://foo.de/bar/baz?x=z/x/c'), 'http://foo.de/bar/')
 485
 486     def test_urljoin(self):
 487         self.assertEqual(urljoin('http://foo.de/', '/a/b/c.txt'), 'http://foo.de/a/b/c.txt')
 488         self.assertEqual(urljoin(b'http://foo.de/', '/a/b/c.txt'), 'http://foo.de/a/b/c.txt')
 489         self.assertEqual(urljoin('http://foo.de/', b'/a/b/c.txt'), 'http://foo.de/a/b/c.txt')
 490         self.assertEqual(urljoin(b'http://foo.de/', b'/a/b/c.txt'), 'http://foo.de/a/b/c.txt')
 491         self.assertEqual(urljoin('//foo.de/', '/a/b/c.txt'), '//foo.de/a/b/c.txt')
 492         self.assertEqual(urljoin('http://foo.de/', 'a/b/c.txt'), 'http://foo.de/a/b/c.txt')
 493         self.assertEqual(urljoin('http://foo.de', '/a/b/c.txt'), 'http://foo.de/a/b/c.txt')
 494         self.assertEqual(urljoin('http://foo.de', 'a/b/c.txt'), 'http://foo.de/a/b/c.txt')
 495         self.assertEqual(urljoin('http://foo.de/', 'http://foo.de/a/b/c.txt'), 'http://foo.de/a/b/c.txt')
 496         self.assertEqual(urljoin('http://foo.de/', '//foo.de/a/b/c.txt'), '//foo.de/a/b/c.txt')
 497         self.assertEqual(urljoin(None, 'http://foo.de/a/b/c.txt'), 'http://foo.de/a/b/c.txt')
 498         self.assertEqual(urljoin(None, '//foo.de/a/b/c.txt'), '//foo.de/a/b/c.txt')
 499         self.assertEqual(urljoin('', 'http://foo.de/a/b/c.txt'), 'http://foo.de/a/b/c.txt')
 500         self.assertEqual(urljoin(['foobar'], 'http://foo.de/a/b/c.txt'), 'http://foo.de/a/b/c.txt')
 501         self.assertEqual(urljoin('http://foo.de/', None), None)
 502         self.assertEqual(urljoin('http://foo.de/', ''), None)
 503         self.assertEqual(urljoin('http://foo.de/', ['foobar']), None)
 504         self.assertEqual(urljoin('http://foo.de/a/b/c.txt', '.././../d.txt'), 'http://foo.de/d.txt')
 505
 506     def test_parse_age_limit(self):
 507         self.assertEqual(parse_age_limit(None), None)
 508         self.assertEqual(parse_age_limit(False), None)
 509         self.assertEqual(parse_age_limit('invalid'), None)
 510         self.assertEqual(parse_age_limit(0), 0)
 511         self.assertEqual(parse_age_limit(18), 18)
 512         self.assertEqual(parse_age_limit(21), 21)
 513         self.assertEqual(parse_age_limit(22), None)
 514         self.assertEqual(parse_age_limit('18'), 18)
 515         self.assertEqual(parse_age_limit('18+'), 18)
 516         self.assertEqual(parse_age_limit('PG-13'), 13)
 517         self.assertEqual(parse_age_limit('TV-14'), 14)
 518         self.assertEqual(parse_age_limit('TV-MA'), 17)
 519
 520     def test_parse_duration(self):
 521         self.assertEqual(parse_duration(None), None)
 522         self.assertEqual(parse_duration(False), None)
 523         self.assertEqual(parse_duration('invalid'), None)
 524         self.assertEqual(parse_duration('1'), 1)
 525         self.assertEqual(parse_duration('1337:12'), 80232)
 526         self.assertEqual(parse_duration('9:12:43'), 33163)
 527         self.assertEqual(parse_duration('12:00'), 720)
 528         self.assertEqual(parse_duration('00:01:01'), 61)
 529         self.assertEqual(parse_duration('x:y'), None)
 530         self.assertEqual(parse_duration('3h11m53s'), 11513)
 531         self.assertEqual(parse_duration('3h 11m 53s'), 11513)
 532         self.assertEqual(parse_duration('3 hours 11 minutes 53 seconds'), 11513)
 533         self.assertEqual(parse_duration('3 hours 11 mins 53 secs'), 11513)
 534         self.assertEqual(parse_duration('62m45s'), 3765)
 535         self.assertEqual(parse_duration('6m59s'), 419)
 536         self.assertEqual(parse_duration('49s'), 49)
 537         self.assertEqual(parse_duration('0h0m0s'), 0)
 538         self.assertEqual(parse_duration('0m0s'), 0)
 539         self.assertEqual(parse_duration('0s'), 0)
 540         self.assertEqual(parse_duration('01:02:03.05'), 3723.05)
 541         self.assertEqual(parse_duration('T30M38S'), 1838)
 542         self.assertEqual(parse_duration('5 s'), 5)
 543         self.assertEqual(parse_duration('3 min'), 180)
 544         self.assertEqual(parse_duration('2.5 hours'), 9000)
 545         self.assertEqual(parse_duration('02:03:04'), 7384)
 546         self.assertEqual(parse_duration('01:02:03:04'), 93784)
 547         self.assertEqual(parse_duration('1 hour 3 minutes'), 3780)
 548         self.assertEqual(parse_duration('87 Min.'), 5220)
 549         self.assertEqual(parse_duration('PT1H0.040S'), 3600.04)
 550         self.assertEqual(parse_duration('PT00H03M30SZ'), 210)
 551         self.assertEqual(parse_duration('P0Y0M0DT0H4M20.880S'), 260.88)
 552
 553     def test_fix_xml_ampersands(self):
 554         self.assertEqual(
 555             fix_xml_ampersands('"&x=y&z=a'), '"&amp;x=y&amp;z=a')
 556         self.assertEqual(
 557             fix_xml_ampersands('"&amp;x=y&wrong;&z=a'),
 558             '"&amp;x=y&amp;wrong;&amp;z=a')
 559         self.assertEqual(
 560             fix_xml_ampersands('&amp;&apos;&gt;&lt;&quot;'),
 561             '&amp;&apos;&gt;&lt;&quot;')
 562         self.assertEqual(
 563             fix_xml_ampersands('&#1234;&#x1abC;'), '&#1234;&#x1abC;')
 564         self.assertEqual(fix_xml_ampersands('&#&#'), '&amp;#&amp;#')
 565
 566     def test_paged_list(self):
 567         def testPL(size, pagesize, sliceargs, expected):
 568             def get_page(pagenum):
 569                 firstid = pagenum * pagesize
 570                 upto = min(size, pagenum * pagesize + pagesize)
 571                 for i in range(firstid, upto):
 572                     yield i
 573
 574             pl = OnDemandPagedList(get_page, pagesize)
 575             got = pl.getslice(*sliceargs)
 576             self.assertEqual(got, expected)
 577
 578             iapl = InAdvancePagedList(get_page, size // pagesize + 1, pagesize)
 579             got = iapl.getslice(*sliceargs)
 580             self.assertEqual(got, expected)
 581
 582         testPL(5, 2, (), [0, 1, 2, 3, 4])
 583         testPL(5, 2, (1,), [1, 2, 3, 4])
 584         testPL(5, 2, (2,), [2, 3, 4])
 585         testPL(5, 2, (4,), [4])
 586         testPL(5, 2, (0, 3), [0, 1, 2])
 587         testPL(5, 2, (1, 4), [1, 2, 3])
 588         testPL(5, 2, (2, 99), [2, 3, 4])
 589         testPL(5, 2, (20, 99), [])
 590
 591     def test_read_batch_urls(self):
 592         f = io.StringIO('''\xef\xbb\xbf foo
 593             bar\r
 594             baz
 595             # More after this line\r
 596             ; or after this
 597             bam''')
 598         self.assertEqual(read_batch_urls(f), ['foo', 'bar', 'baz', 'bam'])
 599
 600     def test_urlencode_postdata(self):
 601         data = urlencode_postdata({'username': 'foo@bar.com', 'password': '1234'})
 602         self.assertTrue(isinstance(data, bytes))
 603
 604     def test_update_url_query(self):
 605         def query_dict(url):
 606             return compat_parse_qs(compat_urlparse.urlparse(url).query)
 607         self.assertEqual(query_dict(update_url_query(
 608             'http://example.com/path', {'quality': ['HD'], 'format': ['mp4']})),
 609             query_dict('http://example.com/path?quality=HD&format=mp4'))
 610         self.assertEqual(query_dict(update_url_query(
 611             'http://example.com/path', {'system': ['LINUX', 'WINDOWS']})),
 612             query_dict('http://example.com/path?system=LINUX&system=WINDOWS'))
 613         self.assertEqual(query_dict(update_url_query(
 614             'http://example.com/path', {'fields': 'id,formats,subtitles'})),
 615             query_dict('http://example.com/path?fields=id,formats,subtitles'))
 616         self.assertEqual(query_dict(update_url_query(
 617             'http://example.com/path', {'fields': ('id,formats,subtitles', 'thumbnails')})),
 618             query_dict('http://example.com/path?fields=id,formats,subtitles&fields=thumbnails'))
 619         self.assertEqual(query_dict(update_url_query(
 620             'http://example.com/path?manifest=f4m', {'manifest': []})),
 621             query_dict('http://example.com/path'))
 622         self.assertEqual(query_dict(update_url_query(
 623             'http://example.com/path?system=LINUX&system=WINDOWS', {'system': 'LINUX'})),
 624             query_dict('http://example.com/path?system=LINUX'))
 625         self.assertEqual(query_dict(update_url_query(
 626             'http://example.com/path', {'fields': b'id,formats,subtitles'})),
 627             query_dict('http://example.com/path?fields=id,formats,subtitles'))
 628         self.assertEqual(query_dict(update_url_query(
 629             'http://example.com/path', {'width': 1080, 'height': 720})),
 630             query_dict('http://example.com/path?width=1080&height=720'))
 631         self.assertEqual(query_dict(update_url_query(
 632             'http://example.com/path', {'bitrate': 5020.43})),
 633             query_dict('http://example.com/path?bitrate=5020.43'))
 634         self.assertEqual(query_dict(update_url_query(
 635             'http://example.com/path', {'test': '第二行тест'})),
 636             query_dict('http://example.com/path?test=%E7%AC%AC%E4%BA%8C%E8%A1%8C%D1%82%D0%B5%D1%81%D1%82'))
 637
 638     def test_multipart_encode(self):
 639         self.assertEqual(
 640             multipart_encode({b'field': b'value'}, boundary='AAAAAA')[0],
 641             b'--AAAAAA\r\nContent-Disposition: form-data; name="field"\r\n\r\nvalue\r\n--AAAAAA--\r\n')
 642         self.assertEqual(
 643             multipart_encode({'欄位'.encode('utf-8'): '值'.encode('utf-8')}, boundary='AAAAAA')[0],
 644             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')
 645         self.assertRaises(
 646             ValueError, multipart_encode, {b'field': b'value'}, boundary='value')
 647
 648     def test_dict_get(self):
 649         FALSE_VALUES = {
 650             'none': None,
 651             'false': False,
 652             'zero': 0,
 653             'empty_string': '',
 654             'empty_list': [],
 655         }
 656         d = FALSE_VALUES.copy()
 657         d['a'] = 42
 658         self.assertEqual(dict_get(d, 'a'), 42)
 659         self.assertEqual(dict_get(d, 'b'), None)
 660         self.assertEqual(dict_get(d, 'b', 42), 42)
 661         self.assertEqual(dict_get(d, ('a', )), 42)
 662         self.assertEqual(dict_get(d, ('b', 'a', )), 42)
 663         self.assertEqual(dict_get(d, ('b', 'c', 'a', 'd', )), 42)
 664         self.assertEqual(dict_get(d, ('b', 'c', )), None)
 665         self.assertEqual(dict_get(d, ('b', 'c', ), 42), 42)
 666         for key, false_value in FALSE_VALUES.items():
 667             self.assertEqual(dict_get(d, ('b', 'c', key, )), None)
 668             self.assertEqual(dict_get(d, ('b', 'c', key, ), skip_false_values=False), false_value)
 669
 670     def test_encode_compat_str(self):
 671         self.assertEqual(encode_compat_str(b'\xd1\x82\xd0\xb5\xd1\x81\xd1\x82', 'utf-8'), 'тест')
 672         self.assertEqual(encode_compat_str('тест', 'utf-8'), 'тест')
 673
 674     def test_parse_iso8601(self):
 675         self.assertEqual(parse_iso8601('2014-03-23T23:04:26+0100'), 1395612266)
 676         self.assertEqual(parse_iso8601('2014-03-23T22:04:26+0000'), 1395612266)
 677         self.assertEqual(parse_iso8601('2014-03-23T22:04:26Z'), 1395612266)
 678         self.assertEqual(parse_iso8601('2014-03-23T22:04:26.1234Z'), 1395612266)
 679         self.assertEqual(parse_iso8601('2015-09-29T08:27:31.727'), 1443515251)
 680         self.assertEqual(parse_iso8601('2015-09-29T08-27-31.727'), None)
 681
 682     def test_strip_jsonp(self):
 683         stripped = strip_jsonp('cb ([ {"id":"532cb",\n\n\n"x":\n3}\n]\n);')
 684         d = json.loads(stripped)
 685         self.assertEqual(d, [{"id": "532cb", "x": 3}])
 686
 687         stripped = strip_jsonp('parseMetadata({"STATUS":"OK"})\n\n\n//epc')
 688         d = json.loads(stripped)
 689         self.assertEqual(d, {'STATUS': 'OK'})
 690
 691         stripped = strip_jsonp('ps.embedHandler({"status": "success"});')
 692         d = json.loads(stripped)
 693         self.assertEqual(d, {'status': 'success'})
 694
 695         stripped = strip_jsonp('window.cb && window.cb({"status": "success"});')
 696         d = json.loads(stripped)
 697         self.assertEqual(d, {'status': 'success'})
 698
 699         stripped = strip_jsonp('window.cb && cb({"status": "success"});')
 700         d = json.loads(stripped)
 701         self.assertEqual(d, {'status': 'success'})
 702
 703     def test_uppercase_escape(self):
 704         self.assertEqual(uppercase_escape('aä'), 'aä')
 705         self.assertEqual(uppercase_escape('\\U0001d550'), '𝕐')
 706
 707     def test_lowercase_escape(self):
 708         self.assertEqual(lowercase_escape('aä'), 'aä')
 709         self.assertEqual(lowercase_escape('\\u0026'), '&')
 710
 711     def test_limit_length(self):
 712         self.assertEqual(limit_length(None, 12), None)
 713         self.assertEqual(limit_length('foo', 12), 'foo')
 714         self.assertTrue(
 715             limit_length('foo bar baz asd', 12).startswith('foo bar'))
 716         self.assertTrue('...' in limit_length('foo bar baz asd', 12))
 717
 718     def test_mimetype2ext(self):
 719         self.assertEqual(mimetype2ext(None), None)
 720         self.assertEqual(mimetype2ext('video/x-flv'), 'flv')
 721         self.assertEqual(mimetype2ext('application/x-mpegURL'), 'm3u8')
 722         self.assertEqual(mimetype2ext('text/vtt'), 'vtt')
 723         self.assertEqual(mimetype2ext('text/vtt;charset=utf-8'), 'vtt')
 724         self.assertEqual(mimetype2ext('text/html; charset=utf-8'), 'html')
 725
 726     def test_month_by_name(self):
 727         self.assertEqual(month_by_name(None), None)
 728         self.assertEqual(month_by_name('December', 'en'), 12)
 729         self.assertEqual(month_by_name('décembre', 'fr'), 12)
 730         self.assertEqual(month_by_name('December'), 12)
 731         self.assertEqual(month_by_name('décembre'), None)
 732         self.assertEqual(month_by_name('Unknown', 'unknown'), None)
 733
 734     def test_parse_codecs(self):
 735         self.assertEqual(parse_codecs(''), {})
 736         self.assertEqual(parse_codecs('avc1.77.30, mp4a.40.2'), {
 737             'vcodec': 'avc1.77.30',
 738             'acodec': 'mp4a.40.2',
 739         })
 740         self.assertEqual(parse_codecs('mp4a.40.2'), {
 741             'vcodec': 'none',
 742             'acodec': 'mp4a.40.2',
 743         })
 744         self.assertEqual(parse_codecs('mp4a.40.5,avc1.42001e'), {
 745             'vcodec': 'avc1.42001e',
 746             'acodec': 'mp4a.40.5',
 747         })
 748         self.assertEqual(parse_codecs('avc3.640028'), {
 749             'vcodec': 'avc3.640028',
 750             'acodec': 'none',
 751         })
 752         self.assertEqual(parse_codecs(', h264,,newcodec,aac'), {
 753             'vcodec': 'h264',
 754             'acodec': 'aac',
 755         })
 756
 757     def test_escape_rfc3986(self):
 758         reserved = "!*'();:@&=+$,/?#[]"
 759         unreserved = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_.~'
 760         self.assertEqual(escape_rfc3986(reserved), reserved)
 761         self.assertEqual(escape_rfc3986(unreserved), unreserved)
 762         self.assertEqual(escape_rfc3986('тест'), '%D1%82%D0%B5%D1%81%D1%82')
 763         self.assertEqual(escape_rfc3986('%D1%82%D0%B5%D1%81%D1%82'), '%D1%82%D0%B5%D1%81%D1%82')
 764         self.assertEqual(escape_rfc3986('foo bar'), 'foo%20bar')
 765         self.assertEqual(escape_rfc3986('foo%20bar'), 'foo%20bar')
 766
 767     def test_escape_url(self):
 768         self.assertEqual(
 769             escape_url('http://wowza.imust.org/srv/vod/telemb/new/UPLOAD/UPLOAD/20224_IncendieHavré_FD.mp4'),
 770             'http://wowza.imust.org/srv/vod/telemb/new/UPLOAD/UPLOAD/20224_IncendieHavre%CC%81_FD.mp4'
 771         )
 772         self.assertEqual(
 773             escape_url('http://www.ardmediathek.de/tv/Sturm-der-Liebe/Folge-2036-Zu-Mann-und-Frau-erklärt/Das-Erste/Video?documentId=22673108&bcastId=5290'),
 774             'http://www.ardmediathek.de/tv/Sturm-der-Liebe/Folge-2036-Zu-Mann-und-Frau-erkl%C3%A4rt/Das-Erste/Video?documentId=22673108&bcastId=5290'
 775         )
 776         self.assertEqual(
 777             escape_url('http://тест.рф/фрагмент'),
 778             'http://xn--e1aybc.xn--p1ai/%D1%84%D1%80%D0%B0%D0%B3%D0%BC%D0%B5%D0%BD%D1%82'
 779         )
 780         self.assertEqual(
 781             escape_url('http://тест.рф/абв?абв=абв#абв'),
 782             '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'
 783         )
 784         self.assertEqual(escape_url('http://vimeo.com/56015672#at=0'), 'http://vimeo.com/56015672#at=0')
 785
 786     def test_js_to_json_realworld(self):
 787         inp = '''{
 788             'clip':{'provider':'pseudo'}
 789         }'''
 790         self.assertEqual(js_to_json(inp), '''{
 791             "clip":{"provider":"pseudo"}
 792         }''')
 793         json.loads(js_to_json(inp))
 794
 795         inp = '''{
 796             'playlist':[{'controls':{'all':null}}]
 797         }'''
 798         self.assertEqual(js_to_json(inp), '''{
 799             "playlist":[{"controls":{"all":null}}]
 800         }''')
 801
 802         inp = '''"The CW\\'s \\'Crazy Ex-Girlfriend\\'"'''
 803         self.assertEqual(js_to_json(inp), '''"The CW's 'Crazy Ex-Girlfriend'"''')
 804
 805         inp = '"SAND Number: SAND 2013-7800P\\nPresenter: Tom Russo\\nHabanero Software Training - Xyce Software\\nXyce, Sandia\\u0027s"'
 806         json_code = js_to_json(inp)
 807         self.assertEqual(json.loads(json_code), json.loads(inp))
 808
 809         inp = '''{
 810             0:{src:'skipped', type: 'application/dash+xml'},
 811             1:{src:'skipped', type: 'application/vnd.apple.mpegURL'},
 812         }'''
 813         self.assertEqual(js_to_json(inp), '''{
 814             "0":{"src":"skipped", "type": "application/dash+xml"},
 815             "1":{"src":"skipped", "type": "application/vnd.apple.mpegURL"}
 816         }''')
 817
 818         inp = '''{"foo":101}'''
 819         self.assertEqual(js_to_json(inp), '''{"foo":101}''')
 820
 821         inp = '''{"duration": "00:01:07"}'''
 822         self.assertEqual(js_to_json(inp), '''{"duration": "00:01:07"}''')
 823
 824         inp = '''{segments: [{"offset":-3.885780586188048e-16,"duration":39.75000000000001}]}'''
 825         self.assertEqual(js_to_json(inp), '''{"segments": [{"offset":-3.885780586188048e-16,"duration":39.75000000000001}]}''')
 826
 827     def test_js_to_json_edgecases(self):
 828         on = js_to_json("{abc_def:'1\\'\\\\2\\\\\\'3\"4'}")
 829         self.assertEqual(json.loads(on), {"abc_def": "1'\\2\\'3\"4"})
 830
 831         on = js_to_json('{"abc": true}')
 832         self.assertEqual(json.loads(on), {'abc': True})
 833
 834         # Ignore JavaScript code as well
 835         on = js_to_json('''{
 836             "x": 1,
 837             y: "a",
 838             z: some.code
 839         }''')
 840         d = json.loads(on)
 841         self.assertEqual(d['x'], 1)
 842         self.assertEqual(d['y'], 'a')
 843
 844         on = js_to_json('["abc", "def",]')
 845         self.assertEqual(json.loads(on), ['abc', 'def'])
 846
 847         on = js_to_json('[/*comment\n*/"abc"/*comment\n*/,/*comment\n*/"def",/*comment\n*/]')
 848         self.assertEqual(json.loads(on), ['abc', 'def'])
 849
 850         on = js_to_json('[//comment\n"abc" //comment\n,//comment\n"def",//comment\n]')
 851         self.assertEqual(json.loads(on), ['abc', 'def'])
 852
 853         on = js_to_json('{"abc": "def",}')
 854         self.assertEqual(json.loads(on), {'abc': 'def'})
 855
 856         on = js_to_json('{/*comment\n*/"abc"/*comment\n*/:/*comment\n*/"def"/*comment\n*/,/*comment\n*/}')
 857         self.assertEqual(json.loads(on), {'abc': 'def'})
 858
 859         on = js_to_json('{ 0: /* " \n */ ",]" , }')
 860         self.assertEqual(json.loads(on), {'0': ',]'})
 861
 862         on = js_to_json('{ /*comment\n*/0/*comment\n*/: /* " \n */ ",]" , }')
 863         self.assertEqual(json.loads(on), {'0': ',]'})
 864
 865         on = js_to_json('{ 0: // comment\n1 }')
 866         self.assertEqual(json.loads(on), {'0': 1})
 867
 868         on = js_to_json(r'["<p>x<\/p>"]')
 869         self.assertEqual(json.loads(on), ['<p>x</p>'])
 870
 871         on = js_to_json(r'["\xaa"]')
 872         self.assertEqual(json.loads(on), ['\u00aa'])
 873
 874         on = js_to_json("['a\\\nb']")
 875         self.assertEqual(json.loads(on), ['ab'])
 876
 877         on = js_to_json("/*comment\n*/[/*comment\n*/'a\\\nb'/*comment\n*/]/*comment\n*/")
 878         self.assertEqual(json.loads(on), ['ab'])
 879
 880         on = js_to_json('{0xff:0xff}')
 881         self.assertEqual(json.loads(on), {'255': 255})
 882
 883         on = js_to_json('{/*comment\n*/0xff/*comment\n*/:/*comment\n*/0xff/*comment\n*/}')
 884         self.assertEqual(json.loads(on), {'255': 255})
 885
 886         on = js_to_json('{077:077}')
 887         self.assertEqual(json.loads(on), {'63': 63})
 888
 889         on = js_to_json('{/*comment\n*/077/*comment\n*/:/*comment\n*/077/*comment\n*/}')
 890         self.assertEqual(json.loads(on), {'63': 63})
 891
 892         on = js_to_json('{42:42}')
 893         self.assertEqual(json.loads(on), {'42': 42})
 894
 895         on = js_to_json('{/*comment\n*/42/*comment\n*/:/*comment\n*/42/*comment\n*/}')
 896         self.assertEqual(json.loads(on), {'42': 42})
 897
 898         on = js_to_json('{42:4.2e1}')
 899         self.assertEqual(json.loads(on), {'42': 42.0})
 900
 901     def test_js_to_json_malformed(self):
 902         self.assertEqual(js_to_json('42a1'), '42"a1"')
 903         self.assertEqual(js_to_json('42a-1'), '42"a"-1')
 904
 905     def test_extract_attributes(self):
 906         self.assertEqual(extract_attributes('<e x="y">'), {'x': 'y'})
 907         self.assertEqual(extract_attributes("<e x='y'>"), {'x': 'y'})
 908         self.assertEqual(extract_attributes('<e x=y>'), {'x': 'y'})
 909         self.assertEqual(extract_attributes('<e x="a \'b\' c">'), {'x': "a 'b' c"})
 910         self.assertEqual(extract_attributes('<e x=\'a "b" c\'>'), {'x': 'a "b" c'})
 911         self.assertEqual(extract_attributes('<e x="&#121;">'), {'x': 'y'})
 912         self.assertEqual(extract_attributes('<e x="&#x79;">'), {'x': 'y'})
 913         self.assertEqual(extract_attributes('<e x="&amp;">'), {'x': '&'})  # XML
 914         self.assertEqual(extract_attributes('<e x="&quot;">'), {'x': '"'})
 915         self.assertEqual(extract_attributes('<e x="&pound;">'), {'x': '£'})  # HTML 3.2
 916         self.assertEqual(extract_attributes('<e x="&lambda;">'), {'x': 'λ'})  # HTML 4.0
 917         self.assertEqual(extract_attributes('<e x="&foo">'), {'x': '&foo'})
 918         self.assertEqual(extract_attributes('<e x="\'">'), {'x': "'"})
 919         self.assertEqual(extract_attributes('<e x=\'"\'>'), {'x': '"'})
 920         self.assertEqual(extract_attributes('<e x >'), {'x': None})
 921         self.assertEqual(extract_attributes('<e x=y a>'), {'x': 'y', 'a': None})
 922         self.assertEqual(extract_attributes('<e x= y>'), {'x': 'y'})
 923         self.assertEqual(extract_attributes('<e x=1 y=2 x=3>'), {'y': '2', 'x': '3'})
 924         self.assertEqual(extract_attributes('<e \nx=\ny\n>'), {'x': 'y'})
 925         self.assertEqual(extract_attributes('<e \nx=\n"y"\n>'), {'x': 'y'})
 926         self.assertEqual(extract_attributes("<e \nx=\n'y'\n>"), {'x': 'y'})
 927         self.assertEqual(extract_attributes('<e \nx="\ny\n">'), {'x': '\ny\n'})
 928         self.assertEqual(extract_attributes('<e CAPS=x>'), {'caps': 'x'})  # Names lowercased
 929         self.assertEqual(extract_attributes('<e x=1 X=2>'), {'x': '2'})
 930         self.assertEqual(extract_attributes('<e X=1 x=2>'), {'x': '2'})
 931         self.assertEqual(extract_attributes('<e _:funny-name1=1>'), {'_:funny-name1': '1'})
 932         self.assertEqual(extract_attributes('<e x="Fáilte 世界 \U0001f600">'), {'x': 'Fáilte 世界 \U0001f600'})
 933         self.assertEqual(extract_attributes('<e x="décompose&#769;">'), {'x': 'décompose\u0301'})
 934         # "Narrow" Python builds don't support unicode code points outside BMP.
 935         try:
 936             compat_chr(0x10000)
 937             supports_outside_bmp = True
 938         except ValueError:
 939             supports_outside_bmp = False
 940         if supports_outside_bmp:
 941             self.assertEqual(extract_attributes('<e x="Smile &#128512;!">'), {'x': 'Smile \U0001f600!'})
 942         # Malformed HTML should not break attributes extraction on older Python
 943         self.assertEqual(extract_attributes('<mal"formed/>'), {})
 944
 945     def test_clean_html(self):
 946         self.assertEqual(clean_html('a:\nb'), 'a: b')
 947         self.assertEqual(clean_html('a:\n   "b"'), 'a:    "b"')
 948         self.assertEqual(clean_html('a<br>\xa0b'), 'a\nb')
 949
 950     def test_intlist_to_bytes(self):
 951         self.assertEqual(
 952             intlist_to_bytes([0, 1, 127, 128, 255]),
 953             b'\x00\x01\x7f\x80\xff')
 954
 955     def test_args_to_str(self):
 956         self.assertEqual(
 957             args_to_str(['foo', 'ba/r', '-baz', '2 be', '']),
 958             'foo ba/r -baz \'2 be\' \'\'' if compat_os_name != 'nt' else 'foo ba/r -baz "2 be" ""'
 959         )
 960
 961     def test_parse_filesize(self):
 962         self.assertEqual(parse_filesize(None), None)
 963         self.assertEqual(parse_filesize(''), None)
 964         self.assertEqual(parse_filesize('91 B'), 91)
 965         self.assertEqual(parse_filesize('foobar'), None)
 966         self.assertEqual(parse_filesize('2 MiB'), 2097152)
 967         self.assertEqual(parse_filesize('5 GB'), 5000000000)
 968         self.assertEqual(parse_filesize('1.2Tb'), 1200000000000)
 969         self.assertEqual(parse_filesize('1.2tb'), 1200000000000)
 970         self.assertEqual(parse_filesize('1,24 KB'), 1240)
 971         self.assertEqual(parse_filesize('1,24 kb'), 1240)
 972         self.assertEqual(parse_filesize('8.5 megabytes'), 8500000)
 973
 974     def test_parse_count(self):
 975         self.assertEqual(parse_count(None), None)
 976         self.assertEqual(parse_count(''), None)
 977         self.assertEqual(parse_count('0'), 0)
 978         self.assertEqual(parse_count('1000'), 1000)
 979         self.assertEqual(parse_count('1.000'), 1000)
 980         self.assertEqual(parse_count('1.1k'), 1100)
 981         self.assertEqual(parse_count('1.1kk'), 1100000)
 982         self.assertEqual(parse_count('1.1kk '), 1100000)
 983         self.assertEqual(parse_count('1.1kk views'), 1100000)
 984
 985     def test_version_tuple(self):
 986         self.assertEqual(version_tuple('1'), (1,))
 987         self.assertEqual(version_tuple('10.23.344'), (10, 23, 344))
 988         self.assertEqual(version_tuple('10.1-6'), (10, 1, 6))  # avconv style
 989
 990     def test_detect_exe_version(self):
 991         self.assertEqual(detect_exe_version('''ffmpeg version 1.2.1
 992 built on May 27 2013 08:37:26 with gcc 4.7 (Debian 4.7.3-4)
 993 configuration: --prefix=/usr --extra-'''), '1.2.1')
 994         self.assertEqual(detect_exe_version('''ffmpeg version N-63176-g1fb4685
 995 built on May 15 2014 22:09:06 with gcc 4.8.2 (GCC)'''), 'N-63176-g1fb4685')
 996         self.assertEqual(detect_exe_version('''X server found. dri2 connection failed!
 997 Trying to open render node...
 998 Success at /dev/dri/renderD128.
 999 ffmpeg version 2.4.4 Copyright (c) 2000-2014 the FFmpeg ...'''), '2.4.4')
1000
1001     def test_age_restricted(self):
1002         self.assertFalse(age_restricted(None, 10))  # unrestricted content
1003         self.assertFalse(age_restricted(1, None))  # unrestricted policy
1004         self.assertFalse(age_restricted(8, 10))
1005         self.assertTrue(age_restricted(18, 14))
1006         self.assertFalse(age_restricted(18, 18))
1007
1008     def test_is_html(self):
1009         self.assertFalse(is_html(b'\x49\x44\x43<html'))
1010         self.assertTrue(is_html(b'<!DOCTYPE foo>\xaaa'))
1011         self.assertTrue(is_html(  # UTF-8 with BOM
1012             b'\xef\xbb\xbf<!DOCTYPE foo>\xaaa'))
1013         self.assertTrue(is_html(  # UTF-16-LE
1014             b'\xff\xfe<\x00h\x00t\x00m\x00l\x00>\x00\xe4\x00'
1015         ))
1016         self.assertTrue(is_html(  # UTF-16-BE
1017             b'\xfe\xff\x00<\x00h\x00t\x00m\x00l\x00>\x00\xe4'
1018         ))
1019         self.assertTrue(is_html(  # UTF-32-BE
1020             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'))
1021         self.assertTrue(is_html(  # UTF-32-LE
1022             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'))
1023
1024     def test_render_table(self):
1025         self.assertEqual(
1026             render_table(
1027                 ['a', 'bcd'],
1028                 [[123, 4], [9999, 51]]),
1029             'a    bcd\n'
1030             '123  4\n'
1031             '9999 51')
1032
1033     def test_match_str(self):
1034         self.assertRaises(ValueError, match_str, 'xy>foobar', {})
1035         self.assertFalse(match_str('xy', {'x': 1200}))
1036         self.assertTrue(match_str('!xy', {'x': 1200}))
1037         self.assertTrue(match_str('x', {'x': 1200}))
1038         self.assertFalse(match_str('!x', {'x': 1200}))
1039         self.assertTrue(match_str('x', {'x': 0}))
1040         self.assertFalse(match_str('x>0', {'x': 0}))
1041         self.assertFalse(match_str('x>0', {}))
1042         self.assertTrue(match_str('x>?0', {}))
1043         self.assertTrue(match_str('x>1K', {'x': 1200}))
1044         self.assertFalse(match_str('x>2K', {'x': 1200}))
1045         self.assertTrue(match_str('x>=1200 & x < 1300', {'x': 1200}))
1046         self.assertFalse(match_str('x>=1100 & x < 1200', {'x': 1200}))
1047         self.assertFalse(match_str('y=a212', {'y': 'foobar42'}))
1048         self.assertTrue(match_str('y=foobar42', {'y': 'foobar42'}))
1049         self.assertFalse(match_str('y!=foobar42', {'y': 'foobar42'}))
1050         self.assertTrue(match_str('y!=foobar2', {'y': 'foobar42'}))
1051         self.assertFalse(match_str(
1052             'like_count > 100 & dislike_count <? 50 & description',
1053             {'like_count': 90, 'description': 'foo'}))
1054         self.assertTrue(match_str(
1055             'like_count > 100 & dislike_count <? 50 & description',
1056             {'like_count': 190, 'description': 'foo'}))
1057         self.assertFalse(match_str(
1058             'like_count > 100 & dislike_count <? 50 & description',
1059             {'like_count': 190, 'dislike_count': 60, 'description': 'foo'}))
1060         self.assertFalse(match_str(
1061             'like_count > 100 & dislike_count <? 50 & description',
1062             {'like_count': 190, 'dislike_count': 10}))
1063
1064     def test_parse_dfxp_time_expr(self):
1065         self.assertEqual(parse_dfxp_time_expr(None), None)
1066         self.assertEqual(parse_dfxp_time_expr(''), None)
1067         self.assertEqual(parse_dfxp_time_expr('0.1'), 0.1)
1068         self.assertEqual(parse_dfxp_time_expr('0.1s'), 0.1)
1069         self.assertEqual(parse_dfxp_time_expr('00:00:01'), 1.0)
1070         self.assertEqual(parse_dfxp_time_expr('00:00:01.100'), 1.1)
1071         self.assertEqual(parse_dfxp_time_expr('00:00:01:100'), 1.1)
1072
1073     def test_dfxp2srt(self):
1074         dfxp_data = '''<?xml version="1.0" encoding="UTF-8"?>
1075             <tt xmlns="http://www.w3.org/ns/ttml" xml:lang="en" xmlns:tts="http://www.w3.org/ns/ttml#parameter">
1076             <body>
1077                 <div xml:lang="en">
1078                     <p begin="0" end="1">The following line contains Chinese characters and special symbols</p>
1079                     <p begin="1" end="2">第二行<br/>♪♪</p>
1080                     <p begin="2" dur="1"><span>Third<br/>Line</span></p>
1081                     <p begin="3" end="-1">Lines with invalid timestamps are ignored</p>
1082                     <p begin="-1" end="-1">Ignore, two</p>
1083                     <p begin="3" dur="-1">Ignored, three</p>
1084                 </div>
1085             </body>
1086             </tt>'''.encode('utf-8')
1087         srt_data = '''1
1088 00:00:00,000 --> 00:00:01,000
1089 The following line contains Chinese characters and special symbols
1090
1091 2
1092 00:00:01,000 --> 00:00:02,000
1093 第二行
1094 ♪♪
1095
1096 3
1097 00:00:02,000 --> 00:00:03,000
1098 Third
1099 Line
1100
1101 '''
1102         self.assertEqual(dfxp2srt(dfxp_data), srt_data)
1103
1104         dfxp_data_no_default_namespace = '''<?xml version="1.0" encoding="UTF-8"?>
1105             <tt xml:lang="en" xmlns:tts="http://www.w3.org/ns/ttml#parameter">
1106             <body>
1107                 <div xml:lang="en">
1108                     <p begin="0" end="1">The first line</p>
1109                 </div>
1110             </body>
1111             </tt>'''.encode('utf-8')
1112         srt_data = '''1
1113 00:00:00,000 --> 00:00:01,000
1114 The first line
1115
1116 '''
1117         self.assertEqual(dfxp2srt(dfxp_data_no_default_namespace), srt_data)
1118
1119         dfxp_data_with_style = '''<?xml version="1.0" encoding="utf-8"?>
1120 <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">
1121   <head>
1122     <styling>
1123       <style id="s2" style="s0" tts:color="cyan" tts:fontWeight="bold" />
1124       <style id="s1" style="s0" tts:color="yellow" tts:fontStyle="italic" />
1125       <style id="s3" style="s0" tts:color="lime" tts:textDecoration="underline" />
1126       <style id="s0" tts:backgroundColor="black" tts:fontStyle="normal" tts:fontSize="16" tts:fontFamily="sansSerif" tts:color="white" />
1127     </styling>
1128   </head>
1129   <body tts:textAlign="center" style="s0">
1130     <div>
1131       <p begin="00:00:02.08" id="p0" end="00:00:05.84">default style<span tts:color="red">custom style</span></p>
1132       <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>
1133       <p style="s3" begin="00:00:05.84" id="p1" end="00:00:09.56">line 3<br />part 3</p>
1134       <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>
1135     </div>
1136   </body>
1137 </tt>'''.encode('utf-8')
1138         srt_data = '''1
1139 00:00:02,080 --> 00:00:05,839
1140 <font color="white" face="sansSerif" size="16">default style<font color="red">custom style</font></font>
1141
1142 2
1143 00:00:02,080 --> 00:00:05,839
1144 <b><font color="cyan" face="sansSerif" size="16"><font color="lime">part 1
1145 </font>part 2</font></b>
1146
1147 3
1148 00:00:05,839 --> 00:00:09,560
1149 <u><font color="lime">line 3
1150 part 3</font></u>
1151
1152 4
1153 00:00:09,560 --> 00:00:12,359
1154 <i><u><font color="yellow"><font color="lime">inner
1155  </font>style</font></u></i>
1156
1157 '''
1158         self.assertEqual(dfxp2srt(dfxp_data_with_style), srt_data)
1159
1160         dfxp_data_non_utf8 = '''<?xml version="1.0" encoding="UTF-16"?>
1161             <tt xmlns="http://www.w3.org/ns/ttml" xml:lang="en" xmlns:tts="http://www.w3.org/ns/ttml#parameter">
1162             <body>
1163                 <div xml:lang="en">
1164                     <p begin="0" end="1">Line 1</p>
1165                     <p begin="1" end="2">第二行</p>
1166                 </div>
1167             </body>
1168             </tt>'''.encode('utf-16')
1169         srt_data = '''1
1170 00:00:00,000 --> 00:00:01,000
1171 Line 1
1172
1173 2
1174 00:00:01,000 --> 00:00:02,000
1175 第二行
1176
1177 '''
1178         self.assertEqual(dfxp2srt(dfxp_data_non_utf8), srt_data)
1179
1180     def test_cli_option(self):
1181         self.assertEqual(cli_option({'proxy': '127.0.0.1:3128'}, '--proxy', 'proxy'), ['--proxy', '127.0.0.1:3128'])
1182         self.assertEqual(cli_option({'proxy': None}, '--proxy', 'proxy'), [])
1183         self.assertEqual(cli_option({}, '--proxy', 'proxy'), [])
1184         self.assertEqual(cli_option({'retries': 10}, '--retries', 'retries'), ['--retries', '10'])
1185
1186     def test_cli_valueless_option(self):
1187         self.assertEqual(cli_valueless_option(
1188             {'downloader': 'external'}, '--external-downloader', 'downloader', 'external'), ['--external-downloader'])
1189         self.assertEqual(cli_valueless_option(
1190             {'downloader': 'internal'}, '--external-downloader', 'downloader', 'external'), [])
1191         self.assertEqual(cli_valueless_option(
1192             {'nocheckcertificate': True}, '--no-check-certificate', 'nocheckcertificate'), ['--no-check-certificate'])
1193         self.assertEqual(cli_valueless_option(
1194             {'nocheckcertificate': False}, '--no-check-certificate', 'nocheckcertificate'), [])
1195         self.assertEqual(cli_valueless_option(
1196             {'checkcertificate': True}, '--no-check-certificate', 'checkcertificate', False), [])
1197         self.assertEqual(cli_valueless_option(
1198             {'checkcertificate': False}, '--no-check-certificate', 'checkcertificate', False), ['--no-check-certificate'])
1199
1200     def test_cli_bool_option(self):
1201         self.assertEqual(
1202             cli_bool_option(
1203                 {'nocheckcertificate': True}, '--no-check-certificate', 'nocheckcertificate'),
1204             ['--no-check-certificate', 'true'])
1205         self.assertEqual(
1206             cli_bool_option(
1207                 {'nocheckcertificate': True}, '--no-check-certificate', 'nocheckcertificate', separator='='),
1208             ['--no-check-certificate=true'])
1209         self.assertEqual(
1210             cli_bool_option(
1211                 {'nocheckcertificate': True}, '--check-certificate', 'nocheckcertificate', 'false', 'true'),
1212             ['--check-certificate', 'false'])
1213         self.assertEqual(
1214             cli_bool_option(
1215                 {'nocheckcertificate': True}, '--check-certificate', 'nocheckcertificate', 'false', 'true', '='),
1216             ['--check-certificate=false'])
1217         self.assertEqual(
1218             cli_bool_option(
1219                 {'nocheckcertificate': False}, '--check-certificate', 'nocheckcertificate', 'false', 'true'),
1220             ['--check-certificate', 'true'])
1221         self.assertEqual(
1222             cli_bool_option(
1223                 {'nocheckcertificate': False}, '--check-certificate', 'nocheckcertificate', 'false', 'true', '='),
1224             ['--check-certificate=true'])
1225         self.assertEqual(
1226             cli_bool_option(
1227                 {}, '--check-certificate', 'nocheckcertificate', 'false', 'true', '='),
1228             [])
1229
1230     def test_ohdave_rsa_encrypt(self):
1231         N = 0xab86b6371b5318aaa1d3c9e612a9f1264f372323c8c0f19875b5fc3b3fd3afcc1e5bec527aa94bfa85bffc157e4245aebda05389a5357b75115ac94f074aefcd
1232         e = 65537
1233
1234         self.assertEqual(
1235             ohdave_rsa_encrypt(b'aa111222', e, N),
1236             '726664bd9a23fd0c70f9f1b84aab5e3905ce1e45a584e9cbcf9bcc7510338fc1986d6c599ff990d923aa43c51c0d9013cd572e13bc58f4ae48f2ed8c0b0ba881')
1237
1238     def test_pkcs1pad(self):
1239         data = [1, 2, 3]
1240         padded_data = pkcs1pad(data, 32)
1241         self.assertEqual(padded_data[:2], [0, 2])
1242         self.assertEqual(padded_data[28:], [0, 1, 2, 3])
1243
1244         self.assertRaises(ValueError, pkcs1pad, data, 8)
1245
1246     def test_encode_base_n(self):
1247         self.assertEqual(encode_base_n(0, 30), '0')
1248         self.assertEqual(encode_base_n(80, 30), '2k')
1249
1250         custom_table = '9876543210ZYXWVUTSRQPONMLKJIHGFEDCBA'
1251         self.assertEqual(encode_base_n(0, 30, custom_table), '9')
1252         self.assertEqual(encode_base_n(80, 30, custom_table), '7P')
1253
1254         self.assertRaises(ValueError, encode_base_n, 0, 70)
1255         self.assertRaises(ValueError, encode_base_n, 0, 60, custom_table)
1256
1257     def test_urshift(self):
1258         self.assertEqual(urshift(3, 1), 1)
1259         self.assertEqual(urshift(-3, 1), 2147483646)
1260
1261     def test_get_element_by_class(self):
1262         html = '''
1263             <span class="foo bar">nice</span>
1264         '''
1265
1266         self.assertEqual(get_element_by_class('foo', html), 'nice')
1267         self.assertEqual(get_element_by_class('no-such-class', html), None)
1268
1269     def test_get_element_by_attribute(self):
1270         html = '''
1271             <span class="foo bar">nice</span>
1272         '''
1273
1274         self.assertEqual(get_element_by_attribute('class', 'foo bar', html), 'nice')
1275         self.assertEqual(get_element_by_attribute('class', 'foo', html), None)
1276         self.assertEqual(get_element_by_attribute('class', 'no-such-foo', html), None)
1277
1278         html = '''
1279             <div itemprop="author" itemscope>foo</div>
1280         '''
1281
1282         self.assertEqual(get_element_by_attribute('itemprop', 'author', html), 'foo')
1283
1284     def test_get_elements_by_class(self):
1285         html = '''
1286             <span class="foo bar">nice</span><span class="foo bar">also nice</span>
1287         '''
1288
1289         self.assertEqual(get_elements_by_class('foo', html), ['nice', 'also nice'])
1290         self.assertEqual(get_elements_by_class('no-such-class', html), [])
1291
1292     def test_get_elements_by_attribute(self):
1293         html = '''
1294             <span class="foo bar">nice</span><span class="foo bar">also nice</span>
1295         '''
1296
1297         self.assertEqual(get_elements_by_attribute('class', 'foo bar', html), ['nice', 'also nice'])
1298         self.assertEqual(get_elements_by_attribute('class', 'foo', html), [])
1299         self.assertEqual(get_elements_by_attribute('class', 'no-such-foo', html), [])
1300
1301
1302 if __name__ == '__main__':
1303     unittest.main()