fix: test coverage

test/game/pinball_game_test.dart

@@ -236,14 +236,40 @@ void main() {
         },
       );
 
-      flameBlocTester.test(
-        'one SkillShot',
-        (game) async {
+      flameBlocTester.test('one SkillShot', (game) async {
+        await game.ready();
+        expect(
+          game.descendants().whereType<SkillShot>().length,
+          equals(1),
+        );
+      });
+
+      flameBlocTester.testGameWidget(
+        'paints sprites with FilterQuality.medium',
+        setUp: (game, tester) async {
+          await game.images.loadAll(assets);
           await game.ready();
+
+          final descendants = game.descendants();
+          final components = [
+            ...descendants.whereType<SpriteComponent>(),
+            ...descendants.whereType<SpriteGroupComponent>(),
+          ];
+          expect(components, isNotEmpty);
           expect(
-            game.descendants().whereType<SkillShot>().length,
-            equals(1),
+            components.whereType<HasPaint>().length,
+            equals(components.length),
           );
+
+          await tester.pump();
+
+          for (final component in components) {
+            if (component is! HasPaint) return;
+            expect(
+              component.paint.filterQuality,
+              equals(FilterQuality.medium),
+            );
+          }
         },
       );
 
@@ -330,20 +356,6 @@ void main() {
             },
           );
         });
-
-        flameTester.testGameWidget(
-          'sets FilterQuality.medium to all components',
-          setUp: (game, tester) async {
-            await game.ready();
-            await tester.pump();
-            game.descendants().whereType<HasPaint>().forEach((component) {
-              expect(
-                component.paint.filterQuality,
-                equals(FilterQuality.medium),
-              );
-            });
-          },
-        );
       });
     });