add capability to suppress expected warnings in tests

test/helper.py

@@ -1,6 +1,8 @@
 import io
 import json
 import os.path
+import re
+import types
 
 import youtube_dl.extractor
 from youtube_dl import YoutubeDL, YoutubeDLHandler
@@ -32,6 +34,19 @@ class FakeYDL(YoutubeDL):
         raise Exception(s)
     def download(self, x):
         self.result.append(x)
+    # def expect_warning(self, regex):
+    #     # Silence an expected warning matching a regex
+    #     def report_warning(self, message):
+    #         if re.match(regex, message): return
+    #         super(FakeYDL, self).report_warning(regex)
+    #     self.report_warning = types.MethodType(report_warning, self)
+    def expect_warning(self, regex):
+        # Silence an expected warning matching a regex
+        old_report_warning = self.report_warning
+        def report_warning(self, message):
+            if re.match(regex, message): return
+            old_report_warning(message)
+        self.report_warning = types.MethodType(report_warning, self)
 
 def get_testcases():
     for ie in youtube_dl.extractor.gen_extractors():

test/test_dailymotion_subtitles.py

@@ -2,8 +2,6 @@
 
 import sys
 import unittest
-import json
-import io
 import hashlib
 
 # Allow direct execution
@@ -45,15 +43,18 @@ class TestDailymotionSubtitles(unittest.TestCase):
         subtitles = self.getSubtitles()
         self.assertEqual(len(subtitles.keys()), 5)
     def test_list_subtitles(self):
+        self.DL.expect_warning(u'Automatic Captions not supported by this server')
         self.DL.params['listsubtitles'] = True
         info_dict = self.getInfoDict()
         self.assertEqual(info_dict, None)
     def test_automatic_captions(self):
+        self.DL.expect_warning(u'Automatic Captions not supported by this server')
         self.DL.params['writeautomaticsub'] = True
         self.DL.params['subtitleslang'] = ['en']
         subtitles = self.getSubtitles()
         self.assertTrue(len(subtitles.keys()) == 0)
     def test_nosubtitles(self):
+        self.DL.expect_warning(u'video doesn\'t have subtitles')
         self.url = 'http://www.dailymotion.com/video/x12u166_le-zapping-tele-star-du-08-aout-2013_tv'
         self.DL.params['writesubtitles'] = True
         self.DL.params['allsubtitles'] = True

test/test_youtube_subtitles.py

@@ -2,8 +2,6 @@
 
 import sys
 import unittest
-import json
-import io
 import hashlib
 
 # Allow direct execution
@@ -56,6 +54,7 @@ class TestYoutubeSubtitles(unittest.TestCase):
         subtitles = self.getSubtitles()
         self.assertEqual(md5(subtitles['en']), '356cdc577fde0c6783b9b822e7206ff7')
     def test_youtube_list_subtitles(self):
+        self.DL.expect_warning(u'Video doesn\'t have automatic captions')
         self.DL.params['listsubtitles'] = True
         info_dict = self.getInfoDict()
         self.assertEqual(info_dict, None)
@@ -66,6 +65,7 @@ class TestYoutubeSubtitles(unittest.TestCase):
         subtitles = self.getSubtitles()
         self.assertTrue(subtitles['it'] is not None)
     def test_youtube_nosubtitles(self):
+        self.DL.expect_warning(u'video doesn\'t have subtitles')
         self.url = 'sAjKT8FhjI8'
         self.DL.params['writesubtitles'] = True
         self.DL.params['allsubtitles'] = True