test: added tests for dino walls

packages/pinball_components/lib/src/components/dino_walls.dart

@@ -14,9 +14,6 @@ class DinoWalls extends Forge2DBlueprint {
   /// {@macro dinowalls}
   DinoWalls({required this.position});
 
-  /// Total size of the spaceship.
-  static final size = Vector2(25, 19);
-
   /// The [position] where the elements will be created
   final Vector2 position;
 

packages/pinball_components/test/src/components/dino_walls_test.dart

@@ -0,0 +1,67 @@
+// ignore_for_file: cascade_invocations
+
+import 'package:flame_forge2d/flame_forge2d.dart';
+import 'package:flame_test/flame_test.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:mocktail/mocktail.dart';
+import 'package:pinball_components/pinball_components.dart';
+
+import '../../helpers/helpers.dart';
+
+void main() {
+  group('DinoWalls', () {
+    TestWidgetsFlutterBinding.ensureInitialized();
+    final flameTester = FlameTester(TestGame.new);
+
+    flameTester.test(
+      'loads correctly',
+      (game) async {
+        final dinoWalls = DinoWalls(position: Vector2.zero());
+        await game.addFromBlueprint(dinoWalls);
+        await game.ready();
+
+        for (final wall in dinoWalls.components) {
+          expect(game.contains(wall), isTrue);
+        }
+      },
+    );
+
+    group('DinoTopWall', () {
+      flameTester.testGameWidget(
+        'renders correctly',
+        setUp: (game, tester) async {
+          await game.add(
+            DinoTopWall()..initialPosition = Vector2(0, -50),
+          );
+          await game.ready();
+          await tester.pump();
+        },
+        verify: (game, tester) async {
+          await expectLater(
+            find.byGame<Forge2DGame>(),
+            matchesGoldenFile('golden/dino-top-wall.png'),
+          );
+        },
+      );
+    });
+
+    group('DinoBottomWall', () {
+      flameTester.testGameWidget(
+        'renders correctly',
+        setUp: (game, tester) async {
+          await game.add(
+            DinoBottomWall()..initialPosition = Vector2(0, -12),
+          );
+          await game.ready();
+          await tester.pump();
+        },
+        verify: (game, tester) async {
+          await expectLater(
+            find.byGame<Forge2DGame>(),
+            matchesGoldenFile('golden/dino-bottom-wall.png'),
+          );
+        },
+      );
+    });
+  });
+}