Raphaël G. Git Repositories - youtubedl/blob - test/helper.py

   1 from __future__ import unicode_literals
   2
   3 import errno
   4 import io
   5 import hashlib
   6 import json
   7 import os.path
   8 import re
   9 import types
  10 import ssl
  11 import sys
  12
  13 import youtube_dl.extractor
  14 from youtube_dl import YoutubeDL
  15 from youtube_dl.compat import (
  16     compat_os_name,
  17     compat_str,
  18 )
  19 from youtube_dl.utils import (
  20     preferredencoding,
  21     write_string,
  22 )
  23
  24
  25 def get_params(override=None):
  26     PARAMETERS_FILE = os.path.join(os.path.dirname(os.path.abspath(__file__)),
  27                                    "parameters.json")
  28     LOCAL_PARAMETERS_FILE = os.path.join(os.path.dirname(os.path.abspath(__file__)),
  29                                          "local_parameters.json")
  30     with io.open(PARAMETERS_FILE, encoding='utf-8') as pf:
  31         parameters = json.load(pf)
  32     if os.path.exists(LOCAL_PARAMETERS_FILE):
  33         with io.open(LOCAL_PARAMETERS_FILE, encoding='utf-8') as pf:
  34             parameters.update(json.load(pf))
  35     if override:
  36         parameters.update(override)
  37     return parameters
  38
  39
  40 def try_rm(filename):
  41     """ Remove a file if it exists """
  42     try:
  43         os.remove(filename)
  44     except OSError as ose:
  45         if ose.errno != errno.ENOENT:
  46             raise
  47
  48
  49 def report_warning(message):
  50     '''
  51     Print the message to stderr, it will be prefixed with 'WARNING:'
  52     If stderr is a tty file the 'WARNING:' will be colored
  53     '''
  54     if sys.stderr.isatty() and compat_os_name != 'nt':
  55         _msg_header = '\033[0;33mWARNING:\033[0m'
  56     else:
  57         _msg_header = 'WARNING:'
  58     output = '%s %s\n' % (_msg_header, message)
  59     if 'b' in getattr(sys.stderr, 'mode', '') or sys.version_info[0] < 3:
  60         output = output.encode(preferredencoding())
  61     sys.stderr.write(output)
  62
  63
  64 class FakeYDL(YoutubeDL):
  65     def __init__(self, override=None):
  66         # Different instances of the downloader can't share the same dictionary
  67         # some test set the "sublang" parameter, which would break the md5 checks.
  68         params = get_params(override=override)
  69         super(FakeYDL, self).__init__(params, auto_init=False)
  70         self.result = []
  71
  72     def to_screen(self, s, skip_eol=None):
  73         print(s)
  74
  75     def trouble(self, s, tb=None):
  76         raise Exception(s)
  77
  78     def download(self, x):
  79         self.result.append(x)
  80
  81     def expect_warning(self, regex):
  82         # Silence an expected warning matching a regex
  83         old_report_warning = self.report_warning
  84
  85         def report_warning(self, message):
  86             if re.match(regex, message):
  87                 return
  88             old_report_warning(message)
  89         self.report_warning = types.MethodType(report_warning, self)
  90
  91
  92 def gettestcases(include_onlymatching=False):
  93     for ie in youtube_dl.extractor.gen_extractors():
  94         for tc in ie.get_testcases(include_onlymatching):
  95             yield tc
  96
  97
  98 md5 = lambda s: hashlib.md5(s.encode('utf-8')).hexdigest()
  99
 100
 101 def expect_value(self, got, expected, field):
 102     if isinstance(expected, compat_str) and expected.startswith('re:'):
 103         match_str = expected[len('re:'):]
 104         match_rex = re.compile(match_str)
 105
 106         self.assertTrue(
 107             isinstance(got, compat_str),
 108             'Expected a %s object, but got %s for field %s' % (
 109                 compat_str.__name__, type(got).__name__, field))
 110         self.assertTrue(
 111             match_rex.match(got),
 112             'field %s (value: %r) should match %r' % (field, got, match_str))
 113     elif isinstance(expected, compat_str) and expected.startswith('startswith:'):
 114         start_str = expected[len('startswith:'):]
 115         self.assertTrue(
 116             isinstance(got, compat_str),
 117             'Expected a %s object, but got %s for field %s' % (
 118                 compat_str.__name__, type(got).__name__, field))
 119         self.assertTrue(
 120             got.startswith(start_str),
 121             'field %s (value: %r) should start with %r' % (field, got, start_str))
 122     elif isinstance(expected, compat_str) and expected.startswith('contains:'):
 123         contains_str = expected[len('contains:'):]
 124         self.assertTrue(
 125             isinstance(got, compat_str),
 126             'Expected a %s object, but got %s for field %s' % (
 127                 compat_str.__name__, type(got).__name__, field))
 128         self.assertTrue(
 129             contains_str in got,
 130             'field %s (value: %r) should contain %r' % (field, got, contains_str))
 131     elif isinstance(expected, type):
 132         self.assertTrue(
 133             isinstance(got, expected),
 134             'Expected type %r for field %s, but got value %r of type %r' % (expected, field, got, type(got)))
 135     elif isinstance(expected, dict) and isinstance(got, dict):
 136         expect_dict(self, got, expected)
 137     elif isinstance(expected, list) and isinstance(got, list):
 138         self.assertEqual(
 139             len(expected), len(got),
 140             'Expect a list of length %d, but got a list of length %d for field %s' % (
 141                 len(expected), len(got), field))
 142         for index, (item_got, item_expected) in enumerate(zip(got, expected)):
 143             type_got = type(item_got)
 144             type_expected = type(item_expected)
 145             self.assertEqual(
 146                 type_expected, type_got,
 147                 'Type mismatch for list item at index %d for field %s, expected %r, got %r' % (
 148                     index, field, type_expected, type_got))
 149             expect_value(self, item_got, item_expected, field)
 150     else:
 151         if isinstance(expected, compat_str) and expected.startswith('md5:'):
 152             self.assertTrue(
 153                 isinstance(got, compat_str),
 154                 'Expected field %s to be a unicode object, but got value %r of type %r' % (field, got, type(got)))
 155             got = 'md5:' + md5(got)
 156         elif isinstance(expected, compat_str) and re.match(r'^(?:min|max)?count:\d+', expected):
 157             self.assertTrue(
 158                 isinstance(got, (list, dict)),
 159                 'Expected field %s to be a list or a dict, but it is of type %s' % (
 160                     field, type(got).__name__))
 161             op, _, expected_num = expected.partition(':')
 162             expected_num = int(expected_num)
 163             if op == 'mincount':
 164                 assert_func = assertGreaterEqual
 165                 msg_tmpl = 'Expected %d items in field %s, but only got %d'
 166             elif op == 'maxcount':
 167                 assert_func = assertLessEqual
 168                 msg_tmpl = 'Expected maximum %d items in field %s, but got %d'
 169             elif op == 'count':
 170                 assert_func = assertEqual
 171                 msg_tmpl = 'Expected exactly %d items in field %s, but got %d'
 172             else:
 173                 assert False
 174             assert_func(
 175                 self, len(got), expected_num,
 176                 msg_tmpl % (expected_num, field, len(got)))
 177             return
 178         self.assertEqual(
 179             expected, got,
 180             'Invalid value for field %s, expected %r, got %r' % (field, expected, got))
 181
 182
 183 def expect_dict(self, got_dict, expected_dict):
 184     for info_field, expected in expected_dict.items():
 185         got = got_dict.get(info_field)
 186         expect_value(self, got, expected, info_field)
 187
 188
 189 def expect_info_dict(self, got_dict, expected_dict):
 190     expect_dict(self, got_dict, expected_dict)
 191     # Check for the presence of mandatory fields
 192     if got_dict.get('_type') not in ('playlist', 'multi_video'):
 193         for key in ('id', 'url', 'title', 'ext'):
 194             self.assertTrue(got_dict.get(key), 'Missing mandatory field %s' % key)
 195     # Check for mandatory fields that are automatically set by YoutubeDL
 196     for key in ['webpage_url', 'extractor', 'extractor_key']:
 197         self.assertTrue(got_dict.get(key), 'Missing field: %s' % key)
 198
 199     # Are checkable fields missing from the test case definition?
 200     test_info_dict = dict((key, value if not isinstance(value, compat_str) or len(value) < 250 else 'md5:' + md5(value))
 201                           for key, value in got_dict.items()
 202                           if value and key in ('id', 'title', 'description', 'uploader', 'upload_date', 'timestamp', 'uploader_id', 'location', 'age_limit'))
 203     missing_keys = set(test_info_dict.keys()) - set(expected_dict.keys())
 204     if missing_keys:
 205         def _repr(v):
 206             if isinstance(v, compat_str):
 207                 return "'%s'" % v.replace('\\', '\\\\').replace("'", "\\'").replace('\n', '\\n')
 208             else:
 209                 return repr(v)
 210         info_dict_str = ''
 211         if len(missing_keys) != len(expected_dict):
 212             info_dict_str += ''.join(
 213                 '    %s: %s,\n' % (_repr(k), _repr(v))
 214                 for k, v in test_info_dict.items() if k not in missing_keys)
 215
 216             if info_dict_str:
 217                 info_dict_str += '\n'
 218         info_dict_str += ''.join(
 219             '    %s: %s,\n' % (_repr(k), _repr(test_info_dict[k]))
 220             for k in missing_keys)
 221         write_string(
 222             '\n\'info_dict\': {\n' + info_dict_str + '},\n', out=sys.stderr)
 223         self.assertFalse(
 224             missing_keys,
 225             'Missing keys in test definition: %s' % (
 226                 ', '.join(sorted(missing_keys))))
 227
 228
 229 def assertRegexpMatches(self, text, regexp, msg=None):
 230     if hasattr(self, 'assertRegexp'):
 231         return self.assertRegexp(text, regexp, msg)
 232     else:
 233         m = re.match(regexp, text)
 234         if not m:
 235             note = 'Regexp didn\'t match: %r not found' % (regexp)
 236             if len(text) < 1000:
 237                 note += ' in %r' % text
 238             if msg is None:
 239                 msg = note
 240             else:
 241                 msg = note + ', ' + msg
 242             self.assertTrue(m, msg)
 243
 244
 245 def assertGreaterEqual(self, got, expected, msg=None):
 246     if not (got >= expected):
 247         if msg is None:
 248             msg = '%r not greater than or equal to %r' % (got, expected)
 249         self.assertTrue(got >= expected, msg)
 250
 251
 252 def assertLessEqual(self, got, expected, msg=None):
 253     if not (got <= expected):
 254         if msg is None:
 255             msg = '%r not less than or equal to %r' % (got, expected)
 256         self.assertTrue(got <= expected, msg)
 257
 258
 259 def assertEqual(self, got, expected, msg=None):
 260     if not (got == expected):
 261         if msg is None:
 262             msg = '%r not equal to %r' % (got, expected)
 263         self.assertTrue(got == expected, msg)
 264
 265
 266 def expect_warnings(ydl, warnings_re):
 267     real_warning = ydl.report_warning
 268
 269     def _report_warning(w):
 270         if not any(re.search(w_re, w) for w_re in warnings_re):
 271             real_warning(w)
 272
 273     ydl.report_warning = _report_warning
 274
 275
 276 def http_server_port(httpd):
 277     if os.name == 'java' and isinstance(httpd.socket, ssl.SSLSocket):
 278         # In Jython SSLSocket is not a subclass of socket.socket
 279         sock = httpd.socket.sock
 280     else:
 281         sock = httpd.socket
 282     return sock.getsockname()[1]