Add shortened Youtube links to downloader factory

bulkredditdownloader/site_downloaders/download_factory.py

@@ -38,7 +38,7 @@ class DownloadFactory:
             return SelfPost
         elif re.match(url_beginning + r'v\.redd\.it', url):
             return VReddit
-        elif re.match(url_beginning + r'youtube', url):
+        elif re.match(url_beginning + r'youtu\.?be', url):
             return Youtube
         elif re.match(url_beginning + r'i\.redd\.it.*', url) or re.match(url_beginning + r'.*\..{3,4}$', url):
             return Direct

bulkredditdownloader/tests/downloaders/test_download_factory.py

@@ -35,6 +35,7 @@ from bulkredditdownloader.site_downloaders.youtube import Youtube
     ('lupb4r', Youtube),
     ('lul6l7', Redgifs),
     ('luu376', GifDeliveryNetwork),
+    ('m2l5oo', Youtube),
 ))
 def test_factory_lever_good(test_submission_id: str, expected_class: BaseDownloader, reddit_instance: praw.Reddit):
     submission = reddit_instance.submission(id=test_submission_id)

bulkredditdownloader/tests/downloaders/test_youtube.py

@@ -13,6 +13,7 @@ from bulkredditdownloader.site_downloaders.youtube import Youtube
 @pytest.mark.long
 @pytest.mark.parametrize(('test_submission_id', 'expected_hash'), (
     ('ltnoqp', '468136300a106c67f1463a7011a6db4a'),
+    ('m2l5oo', 'a70512f7782f13922258297bb12055d9'),
 ))
 def test_find_resources(test_submission_id: str, expected_hash: str, reddit_instance: praw.Reddit):
     test_submission = reddit_instance.submission(id=test_submission_id)