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