X-Git-Url: https://git.rapsys.eu/youtubedl/blobdiff_plain/b8d8e13c1f9e4d3cdd7d41c5c9d711a36dd5f9c3..6245a4128588146e39f66b371624ee39bdbb7720:/test/test_utils.py

diff --git a/test/test_utils.py b/test/test_utils.py
index edc712f..0896f41 100644
--- a/test/test_utils.py
+++ b/test/test_utils.py
@@ -19,6 +19,7 @@ from youtube_dl.utils import (
     age_restricted,
     args_to_str,
     encode_base_n,
+    caesar,
     clean_html,
     date_from_str,
     DateRange,
@@ -33,14 +34,21 @@ from youtube_dl.utils import (
     ExtractorError,
     find_xpath_attr,
     fix_xml_ampersands,
+    float_or_none,
     get_element_by_class,
+    get_element_by_attribute,
+    get_elements_by_class,
+    get_elements_by_attribute,
     InAdvancePagedList,
+    int_or_none,
     intlist_to_bytes,
     is_html,
     js_to_json,
     limit_length,
+    merge_dicts,
     mimetype2ext,
     month_by_name,
+    multipart_encode,
     ohdave_rsa_encrypt,
     OnDemandPagedList,
     orderedSet,
@@ -49,18 +57,26 @@ from youtube_dl.utils import (
     parse_filesize,
     parse_count,
     parse_iso8601,
+    parse_resolution,
+    parse_bitrate,
+    pkcs1pad,
     read_batch_urls,
     sanitize_filename,
     sanitize_path,
+    sanitize_url,
+    expand_path,
     prepend_extension,
     replace_extension,
     remove_start,
     remove_end,
     remove_quotes,
+    rot47,
     shell_quote,
     smuggle_url,
     str_to_int,
     strip_jsonp,
+    strip_or_none,
+    subtitles_filename,
     timeconvert,
     unescapeHTML,
     unified_strdate,
@@ -69,6 +85,7 @@ from youtube_dl.utils import (
     uppercase_escape,
     lowercase_escape,
     url_basename,
+    url_or_none,
     base_url,
     urljoin,
     urlencode_postdata,
@@ -91,6 +108,9 @@ from youtube_dl.utils import (
 from youtube_dl.compat import (
     compat_chr,
     compat_etree_fromstring,
+    compat_getenv,
+    compat_os_name,
+    compat_setenv,
     compat_urlparse,
     compat_parse_qs,
 )
@@ -167,7 +187,7 @@ class TestUtil(unittest.TestCase):
 
         self.assertEqual(sanitize_filename(
             'ÂÃÄÀÁÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖŐØŒÙÚÛÜŰÝÞßàáâãäåæçèéêëìíîïðñòóôõöőøœùúûüűýþÿ', restricted=True),
-            'AAAAAAAECEEEEIIIIDNOOOOOOOOEUUUUUYPssaaaaaaaeceeeeiiiionooooooooeuuuuuypy')
+            'AAAAAAAECEEEEIIIIDNOOOOOOOOEUUUUUYTHssaaaaaaaeceeeeiiiionooooooooeuuuuuythy')
 
     def test_sanitize_ids(self):
         self.assertEqual(sanitize_filename('_n_cd26wFpw', is_id=True), '_n_cd26wFpw')
@@ -210,6 +230,24 @@ class TestUtil(unittest.TestCase):
         self.assertEqual(sanitize_path('./abc'), 'abc')
         self.assertEqual(sanitize_path('./../abc'), '..\\abc')
 
+    def test_sanitize_url(self):
+        self.assertEqual(sanitize_url('//foo.bar'), 'http://foo.bar')
+        self.assertEqual(sanitize_url('httpss://foo.bar'), 'https://foo.bar')
+        self.assertEqual(sanitize_url('rmtps://foo.bar'), 'rtmps://foo.bar')
+        self.assertEqual(sanitize_url('https://foo.bar'), 'https://foo.bar')
+
+    def test_expand_path(self):
+        def env(var):
+            return '%{0}%'.format(var) if sys.platform == 'win32' else '${0}'.format(var)
+
+        compat_setenv('YOUTUBE_DL_EXPATH_PATH', 'expanded')
+        self.assertEqual(expand_path(env('YOUTUBE_DL_EXPATH_PATH')), 'expanded')
+        self.assertEqual(expand_path(env('HOME')), compat_getenv('HOME'))
+        self.assertEqual(expand_path('~'), compat_getenv('HOME'))
+        self.assertEqual(
+            expand_path('~/%s' % env('YOUTUBE_DL_EXPATH_PATH')),
+            '%s/expanded' % compat_getenv('HOME'))
+
     def test_prepend_extension(self):
         self.assertEqual(prepend_extension('abc.ext', 'temp'), 'abc.temp.ext')
         self.assertEqual(prepend_extension('abc.ext', 'temp', 'ext'), 'abc.temp.ext')
@@ -226,6 +264,11 @@ class TestUtil(unittest.TestCase):
         self.assertEqual(replace_extension('.abc', 'temp'), '.abc.temp')
         self.assertEqual(replace_extension('.abc.ext', 'temp'), '.abc.temp')
 
+    def test_subtitles_filename(self):
+        self.assertEqual(subtitles_filename('abc.ext', 'en', 'vtt'), 'abc.en.vtt')
+        self.assertEqual(subtitles_filename('abc.ext', 'en', 'vtt', 'ext'), 'abc.en.vtt')
+        self.assertEqual(subtitles_filename('abc.unexpected_ext', 'en', 'vtt', 'ext'), 'abc.unexpected_ext.en.vtt')
+
     def test_remove_start(self):
         self.assertEqual(remove_start(None, 'A - '), None)
         self.assertEqual(remove_start('A - B', 'A - '), 'B')
@@ -258,6 +301,7 @@ class TestUtil(unittest.TestCase):
         self.assertEqual(unescapeHTML('/'), '/')
         self.assertEqual(unescapeHTML('é'), 'é')
         self.assertEqual(unescapeHTML('�'), '�')
+        self.assertEqual(unescapeHTML('&a"'), '&a"')
         # HTML5 entities
         self.assertEqual(unescapeHTML('.''), '.\'')
 
@@ -298,6 +342,8 @@ class TestUtil(unittest.TestCase):
         self.assertEqual(unified_strdate('July 15th, 2013'), '20130715')
         self.assertEqual(unified_strdate('September 1st, 2013'), '20130901')
         self.assertEqual(unified_strdate('Sep 2nd, 2013'), '20130902')
+        self.assertEqual(unified_strdate('November 3rd, 2019'), '20191103')
+        self.assertEqual(unified_strdate('October 23rd, 2005'), '20051023')
 
     def test_unified_timestamps(self):
         self.assertEqual(unified_timestamp('December 21, 2010'), 1292889600)
@@ -319,6 +365,10 @@ class TestUtil(unittest.TestCase):
         self.assertEqual(unified_timestamp('UNKNOWN DATE FORMAT'), None)
         self.assertEqual(unified_timestamp('May 16, 2016 11:15 PM'), 1463440500)
         self.assertEqual(unified_timestamp('Feb 7, 2016 at 6:35 pm'), 1454870100)
+        self.assertEqual(unified_timestamp('2017-03-30T17:52:41Q'), 1490896361)
+        self.assertEqual(unified_timestamp('Sep 11, 2013 | 5:49 AM'), 1378878540)
+        self.assertEqual(unified_timestamp('December 15, 2017 at 7:49 am'), 1513324140)
+        self.assertEqual(unified_timestamp('2018-03-14T08:32:43.1493874+00:00'), 1521016363)
 
     def test_determine_ext(self):
         self.assertEqual(determine_ext('http://example.com/foo/bar.mp4/?download'), 'mp4')
@@ -326,6 +376,7 @@ class TestUtil(unittest.TestCase):
         self.assertEqual(determine_ext('http://example.com/foo/bar.nonext/?download', None), None)
         self.assertEqual(determine_ext('http://example.com/foo/bar/mp4?download', None), None)
         self.assertEqual(determine_ext('http://example.com/foo/bar.m3u8//?download'), 'm3u8')
+        self.assertEqual(determine_ext('foobar', None), None)
 
     def test_find_xpath_attr(self):
         testxml = '''<root>
@@ -426,11 +477,34 @@ class TestUtil(unittest.TestCase):
 
     def test_shell_quote(self):
         args = ['ffmpeg', '-i', encodeFilename('ñ€ß\'.mp4')]
-        self.assertEqual(shell_quote(args), """ffmpeg -i 'ñ€ß'"'"'.mp4'""")
+        self.assertEqual(
+            shell_quote(args),
+            """ffmpeg -i 'ñ€ß'"'"'.mp4'""" if compat_os_name != 'nt' else '''ffmpeg -i "ñ€ß'.mp4"''')
+
+    def test_float_or_none(self):
+        self.assertEqual(float_or_none('42.42'), 42.42)
+        self.assertEqual(float_or_none('42'), 42.0)
+        self.assertEqual(float_or_none(''), None)
+        self.assertEqual(float_or_none(None), None)
+        self.assertEqual(float_or_none([]), None)
+        self.assertEqual(float_or_none(set()), None)
+
+    def test_int_or_none(self):
+        self.assertEqual(int_or_none('42'), 42)
+        self.assertEqual(int_or_none(''), None)
+        self.assertEqual(int_or_none(None), None)
+        self.assertEqual(int_or_none([]), None)
+        self.assertEqual(int_or_none(set()), None)
 
     def test_str_to_int(self):
         self.assertEqual(str_to_int('123,456'), 123456)
         self.assertEqual(str_to_int('123.456'), 123456)
+        self.assertEqual(str_to_int(523), 523)
+        # Python 3 has no long
+        if sys.version_info < (3, 0):
+            eval('self.assertEqual(str_to_int(123456L), 123456)')
+        self.assertEqual(str_to_int('noninteger'), None)
+        self.assertEqual(str_to_int([]), None)
 
     def test_url_basename(self):
         self.assertEqual(url_basename('http://foo.de/'), '')
@@ -451,6 +525,9 @@ class TestUtil(unittest.TestCase):
 
     def test_urljoin(self):
         self.assertEqual(urljoin('http://foo.de/', '/a/b/c.txt'), 'http://foo.de/a/b/c.txt')
+        self.assertEqual(urljoin(b'http://foo.de/', '/a/b/c.txt'), 'http://foo.de/a/b/c.txt')
+        self.assertEqual(urljoin('http://foo.de/', b'/a/b/c.txt'), 'http://foo.de/a/b/c.txt')
+        self.assertEqual(urljoin(b'http://foo.de/', b'/a/b/c.txt'), 'http://foo.de/a/b/c.txt')
         self.assertEqual(urljoin('//foo.de/', '/a/b/c.txt'), '//foo.de/a/b/c.txt')
         self.assertEqual(urljoin('http://foo.de/', 'a/b/c.txt'), 'http://foo.de/a/b/c.txt')
         self.assertEqual(urljoin('http://foo.de', '/a/b/c.txt'), 'http://foo.de/a/b/c.txt')
@@ -465,6 +542,18 @@ class TestUtil(unittest.TestCase):
         self.assertEqual(urljoin('http://foo.de/', ''), None)
         self.assertEqual(urljoin('http://foo.de/', ['foobar']), None)
         self.assertEqual(urljoin('http://foo.de/a/b/c.txt', '.././../d.txt'), 'http://foo.de/d.txt')
+        self.assertEqual(urljoin('http://foo.de/a/b/c.txt', 'rtmp://foo.de'), 'rtmp://foo.de')
+        self.assertEqual(urljoin(None, 'rtmp://foo.de'), 'rtmp://foo.de')
+
+    def test_url_or_none(self):
+        self.assertEqual(url_or_none(None), None)
+        self.assertEqual(url_or_none(''), None)
+        self.assertEqual(url_or_none('foo'), None)
+        self.assertEqual(url_or_none('http://foo.de'), 'http://foo.de')
+        self.assertEqual(url_or_none('https://foo.de'), 'https://foo.de')
+        self.assertEqual(url_or_none('http$://foo.de'), None)
+        self.assertEqual(url_or_none('http://foo.de'), 'http://foo.de')
+        self.assertEqual(url_or_none('//foo.de'), '//foo.de')
 
     def test_parse_age_limit(self):
         self.assertEqual(parse_age_limit(None), None)
@@ -479,6 +568,8 @@ class TestUtil(unittest.TestCase):
         self.assertEqual(parse_age_limit('PG-13'), 13)
         self.assertEqual(parse_age_limit('TV-14'), 14)
         self.assertEqual(parse_age_limit('TV-MA'), 17)
+        self.assertEqual(parse_age_limit('TV14'), 14)
+        self.assertEqual(parse_age_limit('TV_G'), 0)
 
     def test_parse_duration(self):
         self.assertEqual(parse_duration(None), None)
@@ -511,6 +602,7 @@ class TestUtil(unittest.TestCase):
         self.assertEqual(parse_duration('87 Min.'), 5220)
         self.assertEqual(parse_duration('PT1H0.040S'), 3600.04)
         self.assertEqual(parse_duration('PT00H03M30SZ'), 210)
+        self.assertEqual(parse_duration('P0Y0M0DT0H4M20.880S'), 260.88)
 
     def test_fix_xml_ampersands(self):
         self.assertEqual(
@@ -597,6 +689,16 @@ class TestUtil(unittest.TestCase):
             'http://example.com/path', {'test': '第二行тест'})),
             query_dict('http://example.com/path?test=%E7%AC%AC%E4%BA%8C%E8%A1%8C%D1%82%D0%B5%D1%81%D1%82'))
 
+    def test_multipart_encode(self):
+        self.assertEqual(
+            multipart_encode({b'field': b'value'}, boundary='AAAAAA')[0],
+            b'--AAAAAA\r\nContent-Disposition: form-data; name="field"\r\n\r\nvalue\r\n--AAAAAA--\r\n')
+        self.assertEqual(
+            multipart_encode({'欄位'.encode('utf-8'): '值'.encode('utf-8')}, boundary='AAAAAA')[0],
+            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')
+        self.assertRaises(
+            ValueError, multipart_encode, {b'field': b'value'}, boundary='value')
+
     def test_dict_get(self):
         FALSE_VALUES = {
             'none': None,
@@ -619,6 +721,17 @@ class TestUtil(unittest.TestCase):
             self.assertEqual(dict_get(d, ('b', 'c', key, )), None)
             self.assertEqual(dict_get(d, ('b', 'c', key, ), skip_false_values=False), false_value)
 
+    def test_merge_dicts(self):
+        self.assertEqual(merge_dicts({'a': 1}, {'b': 2}), {'a': 1, 'b': 2})
+        self.assertEqual(merge_dicts({'a': 1}, {'a': 2}), {'a': 1})
+        self.assertEqual(merge_dicts({'a': 1}, {'a': None}), {'a': 1})
+        self.assertEqual(merge_dicts({'a': 1}, {'a': ''}), {'a': 1})
+        self.assertEqual(merge_dicts({'a': 1}, {}), {'a': 1})
+        self.assertEqual(merge_dicts({'a': None}, {'a': 1}), {'a': 1})
+        self.assertEqual(merge_dicts({'a': ''}, {'a': 1}), {'a': ''})
+        self.assertEqual(merge_dicts({'a': ''}, {'a': 'abc'}), {'a': 'abc'})
+        self.assertEqual(merge_dicts({'a': None}, {'a': ''}, {'a': 'abc'}), {'a': 'abc'})
+
     def test_encode_compat_str(self):
         self.assertEqual(encode_compat_str(b'\xd1\x82\xd0\xb5\xd1\x81\xd1\x82', 'utf-8'), 'тест')
         self.assertEqual(encode_compat_str('тест', 'utf-8'), 'тест')
@@ -644,6 +757,30 @@ class TestUtil(unittest.TestCase):
         d = json.loads(stripped)
         self.assertEqual(d, {'status': 'success'})
 
+        stripped = strip_jsonp('window.cb && window.cb({"status": "success"});')
+        d = json.loads(stripped)
+        self.assertEqual(d, {'status': 'success'})
+
+        stripped = strip_jsonp('window.cb && cb({"status": "success"});')
+        d = json.loads(stripped)
+        self.assertEqual(d, {'status': 'success'})
+
+        stripped = strip_jsonp('({"status": "success"});')
+        d = json.loads(stripped)
+        self.assertEqual(d, {'status': 'success'})
+
+    def test_strip_or_none(self):
+        self.assertEqual(strip_or_none(' abc'), 'abc')
+        self.assertEqual(strip_or_none('abc '), 'abc')
+        self.assertEqual(strip_or_none(' abc '), 'abc')
+        self.assertEqual(strip_or_none('\tabc\t'), 'abc')
+        self.assertEqual(strip_or_none('\n\tabc\n\t'), 'abc')
+        self.assertEqual(strip_or_none('abc'), 'abc')
+        self.assertEqual(strip_or_none(''), '')
+        self.assertEqual(strip_or_none(None), None)
+        self.assertEqual(strip_or_none(42), None)
+        self.assertEqual(strip_or_none([]), None)
+
     def test_uppercase_escape(self):
         self.assertEqual(uppercase_escape('aä'), 'aä')
         self.assertEqual(uppercase_escape('\\U0001d550'), '𝕐')
@@ -697,6 +834,19 @@ class TestUtil(unittest.TestCase):
             'vcodec': 'h264',
             'acodec': 'aac',
         })
+        self.assertEqual(parse_codecs('av01.0.05M.08'), {
+            'vcodec': 'av01.0.05M.08',
+            'acodec': 'none',
+        })
+        self.assertEqual(parse_codecs('theora, vorbis'), {
+            'vcodec': 'theora',
+            'acodec': 'vorbis',
+        })
+        self.assertEqual(parse_codecs('unknownvcodec, unknownacodec'), {
+            'vcodec': 'unknownvcodec',
+            'acodec': 'unknownacodec',
+        })
+        self.assertEqual(parse_codecs('unknown'), {})
 
     def test_escape_rfc3986(self):
         reserved = "!*'();:@&=+$,/?#[]"
@@ -765,6 +915,9 @@ class TestUtil(unittest.TestCase):
         inp = '''{"duration": "00:01:07"}'''
         self.assertEqual(js_to_json(inp), '''{"duration": "00:01:07"}''')
 
+        inp = '''{segments: [{"offset":-3.885780586188048e-16,"duration":39.75000000000001}]}'''
+        self.assertEqual(js_to_json(inp), '''{"segments": [{"offset":-3.885780586188048e-16,"duration":39.75000000000001}]}''')
+
     def test_js_to_json_edgecases(self):
         on = js_to_json("{abc_def:'1\\'\\\\2\\\\\\'3\"4'}")
         self.assertEqual(json.loads(on), {"abc_def": "1'\\2\\'3\"4"})
@@ -836,6 +989,13 @@ class TestUtil(unittest.TestCase):
         on = js_to_json('{/*comment\n*/42/*comment\n*/:/*comment\n*/42/*comment\n*/}')
         self.assertEqual(json.loads(on), {'42': 42})
 
+        on = js_to_json('{42:4.2e1}')
+        self.assertEqual(json.loads(on), {'42': 42.0})
+
+    def test_js_to_json_malformed(self):
+        self.assertEqual(js_to_json('42a1'), '42"a1"')
+        self.assertEqual(js_to_json('42a-1'), '42"a"-1')
+
     def test_extract_attributes(self):
         self.assertEqual(extract_attributes('<e x="y">'), {'x': 'y'})
         self.assertEqual(extract_attributes("<e x='y'>"), {'x': 'y'})
@@ -873,10 +1033,13 @@ class TestUtil(unittest.TestCase):
             supports_outside_bmp = False
         if supports_outside_bmp:
             self.assertEqual(extract_attributes('<e x="Smile &#128512;!">'), {'x': 'Smile \U0001f600!'})
+        # Malformed HTML should not break attributes extraction on older Python
+        self.assertEqual(extract_attributes('<mal"formed/>'), {})
 
     def test_clean_html(self):
         self.assertEqual(clean_html('a:\nb'), 'a: b')
         self.assertEqual(clean_html('a:\n   "b"'), 'a:    "b"')
+        self.assertEqual(clean_html('a<br>\xa0b'), 'a\nb')
 
     def test_intlist_to_bytes(self):
         self.assertEqual(
@@ -886,7 +1049,7 @@ class TestUtil(unittest.TestCase):
     def test_args_to_str(self):
         self.assertEqual(
             args_to_str(['foo', 'ba/r', '-baz', '2 be', '']),
-            'foo ba/r -baz \'2 be\' \'\''
+            'foo ba/r -baz \'2 be\' \'\'' if compat_os_name != 'nt' else 'foo ba/r -baz "2 be" ""'
         )
 
     def test_parse_filesize(self):
@@ -913,6 +1076,23 @@ class TestUtil(unittest.TestCase):
         self.assertEqual(parse_count('1.1kk '), 1100000)
         self.assertEqual(parse_count('1.1kk views'), 1100000)
 
+    def test_parse_resolution(self):
+        self.assertEqual(parse_resolution(None), {})
+        self.assertEqual(parse_resolution(''), {})
+        self.assertEqual(parse_resolution('1920x1080'), {'width': 1920, 'height': 1080})
+        self.assertEqual(parse_resolution('1920×1080'), {'width': 1920, 'height': 1080})
+        self.assertEqual(parse_resolution('1920 x 1080'), {'width': 1920, 'height': 1080})
+        self.assertEqual(parse_resolution('720p'), {'height': 720})
+        self.assertEqual(parse_resolution('4k'), {'height': 2160})
+        self.assertEqual(parse_resolution('8K'), {'height': 4320})
+
+    def test_parse_bitrate(self):
+        self.assertEqual(parse_bitrate(None), None)
+        self.assertEqual(parse_bitrate(''), None)
+        self.assertEqual(parse_bitrate('300kbps'), 300)
+        self.assertEqual(parse_bitrate('1500kbps'), 1500)
+        self.assertEqual(parse_bitrate('300 kbps'), 300)
+
     def test_version_tuple(self):
         self.assertEqual(version_tuple('1'), (1,))
         self.assertEqual(version_tuple('10.23.344'), (10, 23, 344))
@@ -991,6 +1171,18 @@ ffmpeg version 2.4.4 Copyright (c) 2000-2014 the FFmpeg ...'''), '2.4.4')
         self.assertFalse(match_str(
             'like_count > 100 & dislike_count <? 50 & description',
             {'like_count': 190, 'dislike_count': 10}))
+        self.assertTrue(match_str('is_live', {'is_live': True}))
+        self.assertFalse(match_str('is_live', {'is_live': False}))
+        self.assertFalse(match_str('is_live', {'is_live': None}))
+        self.assertFalse(match_str('is_live', {}))
+        self.assertFalse(match_str('!is_live', {'is_live': True}))
+        self.assertTrue(match_str('!is_live', {'is_live': False}))
+        self.assertTrue(match_str('!is_live', {'is_live': None}))
+        self.assertTrue(match_str('!is_live', {}))
+        self.assertTrue(match_str('title', {'title': 'abc'}))
+        self.assertTrue(match_str('title', {'title': ''}))
+        self.assertFalse(match_str('!title', {'title': 'abc'}))
+        self.assertFalse(match_str('!title', {'title': ''}))
 
     def test_parse_dfxp_time_expr(self):
         self.assertEqual(parse_dfxp_time_expr(None), None)
@@ -1014,7 +1206,7 @@ ffmpeg version 2.4.4 Copyright (c) 2000-2014 the FFmpeg ...'''), '2.4.4')
                     <p begin="3" dur="-1">Ignored, three</p>
                 </div>
             </body>
-            </tt>'''
+            </tt>'''.encode('utf-8')
         srt_data = '''1
 00:00:00,000 --> 00:00:01,000
 The following line contains Chinese characters and special symbols
@@ -1039,7 +1231,7 @@ Line
                     <p begin="0" end="1">The first line</p>
                 </div>
             </body>
-            </tt>'''
+            </tt>'''.encode('utf-8')
         srt_data = '''1
 00:00:00,000 --> 00:00:01,000
 The first line
@@ -1047,6 +1239,67 @@ The first line
 '''
         self.assertEqual(dfxp2srt(dfxp_data_no_default_namespace), srt_data)
 
+        dfxp_data_with_style = '''<?xml version="1.0" encoding="utf-8"?>
+<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">
+  <head>
+    <styling>
+      <style id="s2" style="s0" tts:color="cyan" tts:fontWeight="bold" />
+      <style id="s1" style="s0" tts:color="yellow" tts:fontStyle="italic" />
+      <style id="s3" style="s0" tts:color="lime" tts:textDecoration="underline" />
+      <style id="s0" tts:backgroundColor="black" tts:fontStyle="normal" tts:fontSize="16" tts:fontFamily="sansSerif" tts:color="white" />
+    </styling>
+  </head>
+  <body tts:textAlign="center" style="s0">
+    <div>
+      <p begin="00:00:02.08" id="p0" end="00:00:05.84">default style<span tts:color="red">custom style</span></p>
+      <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>
+      <p style="s3" begin="00:00:05.84" id="p1" end="00:00:09.56">line 3<br />part 3</p>
+      <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>
+    </div>
+  </body>
+</tt>'''.encode('utf-8')
+        srt_data = '''1
+00:00:02,080 --> 00:00:05,839
+<font color="white" face="sansSerif" size="16">default style<font color="red">custom style</font></font>
+
+2
+00:00:02,080 --> 00:00:05,839
+<b><font color="cyan" face="sansSerif" size="16"><font color="lime">part 1
+</font>part 2</font></b>
+
+3
+00:00:05,839 --> 00:00:09,560
+<u><font color="lime">line 3
+part 3</font></u>
+
+4
+00:00:09,560 --> 00:00:12,359
+<i><u><font color="yellow"><font color="lime">inner
+ </font>style</font></u></i>
+
+'''
+        self.assertEqual(dfxp2srt(dfxp_data_with_style), srt_data)
+
+        dfxp_data_non_utf8 = '''<?xml version="1.0" encoding="UTF-16"?>
+            <tt xmlns="http://www.w3.org/ns/ttml" xml:lang="en" xmlns:tts="http://www.w3.org/ns/ttml#parameter">
+            <body>
+                <div xml:lang="en">
+                    <p begin="0" end="1">Line 1</p>
+                    <p begin="1" end="2">第二行</p>
+                </div>
+            </body>
+            </tt>'''.encode('utf-16')
+        srt_data = '''1
+00:00:00,000 --> 00:00:01,000
+Line 1
+
+2
+00:00:01,000 --> 00:00:02,000
+第二行
+
+'''
+        self.assertEqual(dfxp2srt(dfxp_data_non_utf8), srt_data)
+
     def test_cli_option(self):
         self.assertEqual(cli_option({'proxy': '127.0.0.1:3128'}, '--proxy', 'proxy'), ['--proxy', '127.0.0.1:3128'])
         self.assertEqual(cli_option({'proxy': None}, '--proxy', 'proxy'), [])
@@ -1092,6 +1345,10 @@ The first line
             cli_bool_option(
                 {'nocheckcertificate': False}, '--check-certificate', 'nocheckcertificate', 'false', 'true', '='),
             ['--check-certificate=true'])
+        self.assertEqual(
+            cli_bool_option(
+                {}, '--check-certificate', 'nocheckcertificate', 'false', 'true', '='),
+            [])
 
     def test_ohdave_rsa_encrypt(self):
         N = 0xab86b6371b5318aaa1d3c9e612a9f1264f372323c8c0f19875b5fc3b3fd3afcc1e5bec527aa94bfa85bffc157e4245aebda05389a5357b75115ac94f074aefcd
@@ -1101,6 +1358,14 @@ The first line
             ohdave_rsa_encrypt(b'aa111222', e, N),
             '726664bd9a23fd0c70f9f1b84aab5e3905ce1e45a584e9cbcf9bcc7510338fc1986d6c599ff990d923aa43c51c0d9013cd572e13bc58f4ae48f2ed8c0b0ba881')
 
+    def test_pkcs1pad(self):
+        data = [1, 2, 3]
+        padded_data = pkcs1pad(data, 32)
+        self.assertEqual(padded_data[:2], [0, 2])
+        self.assertEqual(padded_data[28:], [0, 1, 2, 3])
+
+        self.assertRaises(ValueError, pkcs1pad, data, 8)
+
     def test_encode_base_n(self):
         self.assertEqual(encode_base_n(0, 30), '0')
         self.assertEqual(encode_base_n(80, 30), '2k')
@@ -1112,6 +1377,20 @@ The first line
         self.assertRaises(ValueError, encode_base_n, 0, 70)
         self.assertRaises(ValueError, encode_base_n, 0, 60, custom_table)
 
+    def test_caesar(self):
+        self.assertEqual(caesar('ace', 'abcdef', 2), 'cea')
+        self.assertEqual(caesar('cea', 'abcdef', -2), 'ace')
+        self.assertEqual(caesar('ace', 'abcdef', -2), 'eac')
+        self.assertEqual(caesar('eac', 'abcdef', 2), 'ace')
+        self.assertEqual(caesar('ace', 'abcdef', 0), 'ace')
+        self.assertEqual(caesar('xyz', 'abcdef', 2), 'xyz')
+        self.assertEqual(caesar('abc', 'acegik', 2), 'ebg')
+        self.assertEqual(caesar('ebg', 'acegik', -2), 'abc')
+
+    def test_rot47(self):
+        self.assertEqual(rot47('youtube-dl'), r'J@FEF36\5=')
+        self.assertEqual(rot47('YOUTUBE-DL'), r'*~&%&qt\s{')
+
     def test_urshift(self):
         self.assertEqual(urshift(3, 1), 1)
         self.assertEqual(urshift(-3, 1), 2147483646)
@@ -1124,6 +1403,38 @@ The first line
         self.assertEqual(get_element_by_class('foo', html), 'nice')
         self.assertEqual(get_element_by_class('no-such-class', html), None)
 
+    def test_get_element_by_attribute(self):
+        html = '''
+            <span class="foo bar">nice</span>
+        '''
+
+        self.assertEqual(get_element_by_attribute('class', 'foo bar', html), 'nice')
+        self.assertEqual(get_element_by_attribute('class', 'foo', html), None)
+        self.assertEqual(get_element_by_attribute('class', 'no-such-foo', html), None)
+
+        html = '''
+            <div itemprop="author" itemscope>foo</div>
+        '''
+
+        self.assertEqual(get_element_by_attribute('itemprop', 'author', html), 'foo')
+
+    def test_get_elements_by_class(self):
+        html = '''
+            <span class="foo bar">nice</span><span class="foo bar">also nice</span>
+        '''
+
+        self.assertEqual(get_elements_by_class('foo', html), ['nice', 'also nice'])
+        self.assertEqual(get_elements_by_class('no-such-class', html), [])
+
+    def test_get_elements_by_attribute(self):
+        html = '''
+            <span class="foo bar">nice</span><span class="foo bar">also nice</span>
+        '''
+
+        self.assertEqual(get_elements_by_attribute('class', 'foo bar', html), ['nice', 'also nice'])
+        self.assertEqual(get_elements_by_attribute('class', 'foo', html), [])
+        self.assertEqual(get_elements_by_attribute('class', 'no-such-foo', html), [])
+
 
 if __name__ == '__main__':
     unittest.main()