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         def report_warning(self, message):
  76             if re.match(regex, message): return
  77             old_report_warning(message)
  78         self.report_warning = types.MethodType(report_warning, self)
  79
  80
  81 def gettestcases(include_onlymatching=False):
  82     for ie in youtube_dl.extractor.gen_extractors():
  83         t = getattr(ie, '_TEST', None)
  84         if t:
  85             assert not hasattr(ie, '_TESTS'), \
  86                 '%s has _TEST and _TESTS' % type(ie).__name__
  87             tests = [t]
  88         else:
  89             tests = getattr(ie, '_TESTS', [])
  90         for t in tests:
  91             if not include_onlymatching and t.get('only_matching', False):
  92                 continue
  93             t['name'] = type(ie).__name__[:-len('IE')]
  94             yield t
  95
  96
  97 md5 = lambda s: hashlib.md5(s.encode('utf-8')).hexdigest()
  98
  99
 100 def expect_info_dict(self, expected_dict, got_dict):
 101     for info_field, expected in expected_dict.items():
 102         if isinstance(expected, compat_str) and expected.startswith('re:'):
 103             got = got_dict.get(info_field)
 104             match_str = expected[len('re:'):]
 105             match_rex = re.compile(match_str)
 106
 107             self.assertTrue(
 108                 isinstance(got, compat_str),
 109                 'Expected a %s object, but got %s for field %s' % (
 110                     compat_str.__name__, type(got).__name__, info_field))
 111             self.assertTrue(
 112                 match_rex.match(got),
 113                 'field %s (value: %r) should match %r' % (info_field, got, match_str))
 114         elif isinstance(expected, type):
 115             got = got_dict.get(info_field)
 116             self.assertTrue(isinstance(got, expected),
 117                 'Expected type %r for field %s, but got value %r of type %r' % (expected, info_field, got, type(got)))
 118         else:
 119             if isinstance(expected, compat_str) and expected.startswith('md5:'):
 120                 got = 'md5:' + md5(got_dict.get(info_field))
 121             else:
 122                 got = got_dict.get(info_field)
 123             self.assertEqual(expected, got,
 124                 'invalid value for field %s, expected %r, got %r' % (info_field, expected, got))
 125
 126     # Check for the presence of mandatory fields
 127     if got_dict.get('_type') != 'playlist':
 128         for key in ('id', 'url', 'title', 'ext'):
 129             self.assertTrue(got_dict.get(key), 'Missing mandatory field %s' % key)
 130     # Check for mandatory fields that are automatically set by YoutubeDL
 131     for key in ['webpage_url', 'extractor', 'extractor_key']:
 132         self.assertTrue(got_dict.get(key), 'Missing field: %s' % key)
 133
 134     # Are checkable fields missing from the test case definition?
 135     test_info_dict = dict((key, value if not isinstance(value, compat_str) or len(value) < 250 else 'md5:' + md5(value))
 136         for key, value in got_dict.items()
 137         if value and key in ('title', 'description', 'uploader', 'upload_date', 'timestamp', 'uploader_id', 'location'))
 138     missing_keys = set(test_info_dict.keys()) - set(expected_dict.keys())
 139     if missing_keys:
 140         def _repr(v):
 141             if isinstance(v, compat_str):
 142                 return "'%s'" % v.replace('\\', '\\\\').replace("'", "\\'")
 143             else:
 144                 return repr(v)
 145         info_dict_str = ''.join(
 146             '    %s: %s,\n' % (_repr(k), _repr(v))
 147             for k, v in test_info_dict.items())
 148         write_string(
 149             '\n\'info_dict\': {\n' + info_dict_str + '}\n', out=sys.stderr)
 150         self.assertFalse(
 151             missing_keys,
 152             'Missing keys in test definition: %s' % (
 153                 ', '.join(sorted(missing_keys))))
 154
 155
 156 def assertRegexpMatches(self, text, regexp, msg=None):
 157     if hasattr(self, 'assertRegexp'):
 158         return self.assertRegexp(text, regexp, msg)
 159     else:
 160         m = re.match(regexp, text)
 161         if not m:
 162             note = 'Regexp didn\'t match: %r not found in %r' % (regexp, text)
 163             if msg is None:
 164                 msg = note
 165             else:
 166                 msg = note + ', ' + msg
 167             self.assertTrue(m, msg)
 168
 169
 170 def assertGreaterEqual(self, got, expected, msg=None):
 171     if not (got >= expected):
 172         if msg is None:
 173             msg = '%r not greater than or equal to %r' % (got, expected)
 174         self.assertTrue(got >= expected, msg)
 175
 176
 177 def expect_warnings(ydl, warnings_re):
 178     real_warning = ydl.report_warning
 179
 180     def _report_warning(w):
 181         if not any(re.search(w_re, w) for w_re in warnings_re):
 182             real_warning(w)
 183
 184     ydl.report_warning = _report_warning