test : Widget test for SpriteButtonComponent (flame-engine#2040)

- 🚨 Widget test for `SpriteButtonComponent`

Co-authored-by: Shweta_C <[email protected]>

packages/flame/test/components/input/sprite_button_component_test.dart

@@ -1,8 +1,10 @@
+import 'package:flame/game.dart';
 import 'package:flame/input.dart';
 import 'package:flame/src/anchor.dart';
 import 'package:flame/src/components/sprite_group_component.dart';
 import 'package:flame/src/spritesheet.dart';
 import 'package:flame_test/flame_test.dart';
+import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 
 import '../../game/flame_game_test.dart';
@@ -126,5 +128,83 @@ Future<void> main() async {
       );
       expect(component.current, _ButtonState.up);
     });
+
+    testWidgets(
+      'Button can be pressed while the engine is paused',
+      (tester) async {
+        final game = GameWithTappables();
+
+        final buttonSheet = SpriteSheet.fromColumnsAndRows(
+          image: image,
+          columns: 1,
+          rows: 2,
+        );
+
+        final component = SpriteGroupComponent<_ButtonState>(
+          sprites: {
+            _ButtonState.up: buttonSheet.getSpriteById(0),
+            _ButtonState.down: buttonSheet.getSpriteById(1),
+          },
+        );
+        component.current = _ButtonState.down;
+
+        game.add(
+          SpriteButtonComponent(
+            button: buttonSheet.getSpriteById(0),
+            buttonDown: buttonSheet.getSpriteById(1),
+            onPressed: () {
+              game.pauseEngine();
+              game.overlays.add('pause-menu');
+            },
+            position: Vector2(400, 300),
+            size: Vector2.all(10),
+          ),
+        );
+        await tester.pumpWidget(
+          GameWidget(
+            game: game,
+            overlayBuilderMap: {
+              'pause-menu': (context, _) {
+                return SimpleStatelessWidget(
+                  build: (context) {
+                    return Center(
+                      child: OutlinedButton(
+                        onPressed: () {
+                          game.overlays.remove('pause-menu');
+                          game.resumeEngine();
+                        },
+                        child: const Text('Resume'),
+                      ),
+                    );
+                  },
+                );
+              },
+            },
+          ),
+        );
+        await tester.pump();
+        await tester.pump();
+
+        await tester.tapAt(const Offset(400, 300));
+        await tester.pump(const Duration(seconds: 1));
+        expect(game.paused, true);
+
+        await tester.tapAt(const Offset(400, 300));
+        await tester.pump(const Duration(seconds: 1));
+        expect(game.paused, false);
+      },
+    );
   });
 }
+
+class SimpleStatelessWidget extends StatelessWidget {
+  const SimpleStatelessWidget({
+    required Widget Function(BuildContext) build,
+    super.key,
+  }) : _build = build;
+
+  final Widget Function(BuildContext) _build;
+
+  @override
+  Widget build(BuildContext context) => _build(context);
+}