[youtube:search] Add tests

yt_dlp/extractor/youtube.py

@@ -5311,7 +5311,14 @@ class YoutubeSearchIE(YoutubeTabBaseInfoExtractor, SearchInfoExtractor):
     IE_NAME = 'youtube:search'
     _SEARCH_KEY = 'ytsearch'
     _SEARCH_PARAMS = 'EgIQAQ%3D%3D'  # Videos only
-    _TESTS = []
+    _TESTS = [{
+        'url': 'ytsearch5:youtube-dl test video',
+        'playlist_count': 5,
+        'info_dict': {
+            'id': 'youtube-dl test video',
+            'title': 'youtube-dl test video',
+        }
+    }]
 
 
 class YoutubeSearchDateIE(YoutubeTabBaseInfoExtractor, SearchInfoExtractor):
@@ -5319,7 +5326,14 @@ class YoutubeSearchDateIE(YoutubeTabBaseInfoExtractor, SearchInfoExtractor):
     _SEARCH_KEY = 'ytsearchdate'
     IE_DESC = 'YouTube search, newest videos first'
     _SEARCH_PARAMS = 'CAISAhAB'  # Videos only, sorted by date
-    _TESTS = []
+    _TESTS = [{
+        'url': 'ytsearchdate5:youtube-dl test video',
+        'playlist_count': 5,
+        'info_dict': {
+            'id': 'youtube-dl test video',
+            'title': 'youtube-dl test video',
+        }
+    }]
 
 
 class YoutubeSearchURLIE(YoutubeTabBaseInfoExtractor):