Adapt test_download to support playlists, and remove race conditions

test/parameters.json

@@ -35,6 +35,6 @@
     "username": null, 
     "verbose": true, 
     "writedescription": false, 
-    "writeinfojson": false, 
+    "writeinfojson": true, 
     "writesubtitles": false
 }

test/test_download.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python
 
+import errno
 import hashlib
 import io
 import os
@@ -26,6 +27,14 @@ proxy_handler = compat_urllib_request.ProxyHandler()
 opener = compat_urllib_request.build_opener(proxy_handler, cookie_processor, YoutubeDLHandler())
 compat_urllib_request.install_opener(opener)
 
+def _try_rm(filename):
+    """ Remove a file if it exists """
+    try:
+        os.remove(filename)
+    except OSError as ose:
+        if ose.errno != errno.ENOENT:
+            raise
+
 class FileDownloader(youtube_dl.FileDownloader):
     def __init__(self, *args, **kwargs):
         self.to_stderr = self.to_screen
@@ -50,15 +59,6 @@ class TestDownload(unittest.TestCase):
         self.parameters = parameters
         self.defs = defs
 
-        # Clear old files
-        self.tearDown()
-
-    def tearDown(self):
-        for fn in [ test.get('file', False) for test in self.defs ]:
-            if fn and os.path.exists(fn):
-                os.remove(fn)
-
-
 ### Dynamically generate tests
 def generator(test_case):
 
@@ -67,7 +67,7 @@ def generator(test_case):
         if not ie._WORKING:
             print('Skipping: IE marked as not _WORKING')
             return
-        if not test_case['file']:
+        if 'playlist' not in test_case and not test_case['file']:
             print('Skipping: No output file specified')
             return
         if 'skip' in test_case:
@@ -82,19 +82,32 @@ def generator(test_case):
         fd.add_info_extractor(ie())
         for ien in test_case.get('add_ie', []):
             fd.add_info_extractor(getattr(youtube_dl.InfoExtractors, ien + 'IE')())
+
+        test_cases = test_case.get('playlist', [test_case])
+        for tc in test_cases:
+            _try_rm(tc['file'])
+            _try_rm(tc['file'] + '.info.json')
+        try:
             fd.download([test_case['url']])
 
-        self.assertTrue(os.path.exists(test_case['file']))
+            for tc in test_cases:
-        if 'md5' in test_case:
+                self.assertTrue(os.path.exists(tc['file']))
-            md5_for_file = _file_md5(test_case['file'])
+                self.assertTrue(os.path.exists(tc['file'] + '.info.json'))
-            self.assertEqual(md5_for_file, test_case['md5'])
+                if 'md5' in tc:
-        info_dict = fd.processed_info_dicts[0]
+                    md5_for_file = _file_md5(tc['file'])
-        for (info_field, value) in test_case.get('info_dict', {}).items():
+                    self.assertEqual(md5_for_file, tc['md5'])
+                with io.open(tc['file'] + '.info.json', encoding='utf-8') as infof:
+                    info_dict = json.load(infof)
+                for (info_field, value) in tc.get('info_dict', {}).items():
                     if value.startswith('md5:'):
                         md5_info_value = hashlib.md5(info_dict.get(info_field, '')).hexdigest()
                         self.assertEqual(value[3:], md5_info_value)
                     else:
                         self.assertEqual(value, info_dict.get(info_field))
+        finally:
+            for tc in test_cases:
+                _try_rm(tc['file'])
+                _try_rm(tc['file'] + '.info.json')
 
     return test_template
 

test/tests.json

@@ -124,16 +124,28 @@
   {
     "name": "Steam",
     "url": "http://store.steampowered.com/video/105600/",
+    "playlist": [
+      {
         "file": "81300.flv",
         "md5": "f870007cee7065d7c76b88f0a45ecc07",
         "info_dict": {
             "title": "Terraria 1.1 Trailer"
         }
       },
+      {
+        "file": "80859.flv",
+        "md5": "61aaf31a5c5c3041afb58fb83cbb5751",
+        "info_dict": {
+          "title": "Terraria Trailer"
+        }
+      }
+    ]
+  },
   {
     "name": "Ustream",
     "url": "http://www.ustream.tv/recorded/20274954",
-    "files": [["20274954.flv", "088f151799e8f572f84eb62f17d73e5c" ]],
+    "file": "20274954.flv",
+    "md5": "088f151799e8f572f84eb62f17d73e5c",
     "info_dict": {
         "title": "Young Americans for Liberty February 7, 2012 2:28 AM"
     }