Add tests, get to pass

pubspec.yaml

@@ -16,6 +16,8 @@ dependencies:
 
 
 dev_dependencies:
+  flutter_test:
+    sdk: flutter
   effective_dart: ^1.2.4
   console: ^3.1.0
   test: ^1.12.0

test/search_test.dart

@@ -36,5 +36,13 @@ void main() {
       var nextPage = await query.nextPage();
       expect(nextPage, isNull);
     });
+
+    test('SearchVideosHaveThumbnails', () async {
+      var searchQuery = await yt.search.queryFromPage('hello');
+      expect(searchQuery.content.first is SearchVideo, isTrue);
+
+      var video = searchQuery.content.first as SearchVideo;
+      expect(video.videoThumbnails, isNotEmpty);
+    });
   });
 }

test/streams_test.dart

@@ -20,7 +20,7 @@ void main() {
       'MeJVWBSsPAY',
       '5VGm0dczmHc',
       'ZGdLIwrGHG8',
-      'rsAAeyAr-9Y',
+      // 'rsAAeyAr-9Y', video missing
       'AI7ULzgf8RU'
     };
     for (var videoId in data) {