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

   1 import errno
   2 import io
   3 import hashlib
   4 import json
   5 import os.path
   6 import re
   7 import types
   8 import sys
   9
  10 import youtube_dl.extractor
  11 from youtube_dl import YoutubeDL
  12 from youtube_dl.utils import (
  13     compat_str,
  14     preferredencoding,
  15 )
  16
  17
  18 def get_params(override=None):
  19     PARAMETERS_FILE = os.path.join(os.path.dirname(os.path.abspath(__file__)),
  20                                    "parameters.json")
  21     with io.open(PARAMETERS_FILE, encoding='utf-8') as pf:
  22         parameters = json.load(pf)
  23     if override:
  24         parameters.update(override)
  25     return parameters
  26
  27
  28 def try_rm(filename):
  29     """ Remove a file if it exists """
  30     try:
  31         os.remove(filename)
  32     except OSError as ose:
  33         if ose.errno != errno.ENOENT:
  34             raise
  35
  36
  37 def report_warning(message):
  38     '''
  39     Print the message to stderr, it will be prefixed with 'WARNING:'
  40     If stderr is a tty file the 'WARNING:' will be colored
  41     '''
  42     if sys.stderr.isatty() and os.name != 'nt':
  43         _msg_header = u'\033[0;33mWARNING:\033[0m'
  44     else:
  45         _msg_header = u'WARNING:'
  46     output = u'%s %s\n' % (_msg_header, message)
  47     if 'b' in getattr(sys.stderr, 'mode', '') or sys.version_info[0] < 3:
  48         output = output.encode(preferredencoding())
  49     sys.stderr.write(output)
  50
  51
  52 class FakeYDL(YoutubeDL):
  53     def __init__(self, override=None):
  54         # Different instances of the downloader can't share the same dictionary
  55         # some test set the "sublang" parameter, which would break the md5 checks.
  56         params = get_params(override=override)
  57         super(FakeYDL, self).__init__(params)
  58         self.result = []
  59
  60     def to_screen(self, s, skip_eol=None):
  61         print(s)
  62
  63     def trouble(self, s, tb=None):
  64         raise Exception(s)
  65
  66     def download(self, x):
  67         self.result.append(x)
  68
  69     def expect_warning(self, regex):
  70         # Silence an expected warning matching a regex
  71         old_report_warning = self.report_warning
  72         def report_warning(self, message):
  73             if re.match(regex, message): return
  74             old_report_warning(message)
  75         self.report_warning = types.MethodType(report_warning, self)
  76
  77
  78 def gettestcases(include_onlymatching=False):
  79     for ie in youtube_dl.extractor.gen_extractors():
  80         t = getattr(ie, '_TEST', None)
  81         if t:
  82             assert not hasattr(ie, '_TESTS'), \
  83                 '%s has _TEST and _TESTS' % type(ie).__name__
  84             tests = [t]
  85         else:
  86             tests = getattr(ie, '_TESTS', [])
  87         for t in tests:
  88             if not include_onlymatching and t.get('only_matching', False):
  89                 continue
  90             t['name'] = type(ie).__name__[:-len('IE')]
  91             yield t
  92
  93
  94 md5 = lambda s: hashlib.md5(s.encode('utf-8')).hexdigest()
  95
  96
  97 def expect_info_dict(self, expected_dict, got_dict):
  98     for info_field, expected in expected_dict.items():
  99         if isinstance(expected, compat_str) and expected.startswith('re:'):
 100             got = got_dict.get(info_field)
 101             match_str = expected[len('re:'):]
 102             match_rex = re.compile(match_str)
 103
 104             self.assertTrue(
 105                 isinstance(got, compat_str) and match_rex.match(got),
 106                 u'field %s (value: %r) should match %r' % (info_field, got, match_str))
 107         elif isinstance(expected, type):
 108             got = got_dict.get(info_field)
 109             self.assertTrue(isinstance(got, expected),
 110                 u'Expected type %r for field %s, but got value %r of type %r' % (expected, info_field, got, type(got)))
 111         else:
 112             if isinstance(expected, compat_str) and expected.startswith('md5:'):
 113                 got = 'md5:' + md5(got_dict.get(info_field))
 114             else:
 115                 got = got_dict.get(info_field)
 116             self.assertEqual(expected, got,
 117                 u'invalid value for field %s, expected %r, got %r' % (info_field, expected, got))
 118
 119     # Check for the presence of mandatory fields
 120     for key in ('id', 'url', 'title', 'ext'):
 121         self.assertTrue(got_dict.get(key), 'Missing mandatory field %s' % key)
 122     # Check for mandatory fields that are automatically set by YoutubeDL
 123     for key in ['webpage_url', 'extractor', 'extractor_key']:
 124         self.assertTrue(got_dict.get(key), u'Missing field: %s' % key)
 125
 126     # Are checkable fields missing from the test case definition?
 127     test_info_dict = dict((key, value if not isinstance(value, compat_str) or len(value) < 250 else 'md5:' + md5(value))
 128         for key, value in got_dict.items()
 129         if value and key in ('title', 'description', 'uploader', 'upload_date', 'timestamp', 'uploader_id', 'location'))
 130     missing_keys = set(test_info_dict.keys()) - set(expected_dict.keys())
 131     if missing_keys:
 132         sys.stderr.write(u'\n"info_dict": ' + json.dumps(test_info_dict, ensure_ascii=False, indent=4) + u'\n')
 133         self.assertFalse(
 134             missing_keys,
 135             'Missing keys in test definition: %s' % (
 136                 ', '.join(sorted(missing_keys))))
 137
 138
 139 def assertRegexpMatches(self, text, regexp, msg=None):
 140     if hasattr(self, 'assertRegexpMatches'):
 141         return self.assertRegexpMatches(text, regexp, msg)
 142     else:
 143         m = re.match(regexp, text)
 144         if not m:
 145             note = 'Regexp didn\'t match: %r not found in %r' % (regexp, text)
 146             if msg is None:
 147                 msg = note
 148             else:
 149                 msg = note + ', ' + msg
 150             self.assertTrue(m, msg)