feat: included tests

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

@@ -0,0 +1,25 @@
+// ignore_for_file: cascade_invocations
+
+import 'package:flame_test/flame_test.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:pinball_components/pinball_components.dart';
+
+import '../../helpers/helpers.dart';
+
+void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+  final flameTester = FlameTester(TestGame.new);
+
+  group('FlutterSignPost', () {
+    flameTester.test(
+      'loads correctly',
+      (game) async {
+        final flutterSignPost = FlutterSignPost();
+        await game.ready();
+        await game.ensureAdd(flutterSignPost);
+
+        expect(game.contains(flutterSignPost), isTrue);
+      },
+    );
+  });
+}

test/game/components/flutter_forest_test.dart

@@ -25,6 +25,22 @@ void main() {
       },
     );
 
+    group('loads', () {
+      flameTester.test(
+        'a FlutterSignPost',
+        (game) async {
+          await game.ready();
+          final flutterForest = FlutterForest();
+          await game.ensureAdd(flutterForest);
+
+          expect(
+            game.descendants().whereType<FlutterSignPost>().length,
+            equals(1),
+          );
+        },
+      );
+    });
+
     flameTester.test(
       'onNewState adds a new ball',
       (game) async {