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