test: coverage for multiball

lib/game/components/controlled_multiball.dart

@@ -11,17 +11,33 @@ import 'package:pinball_flame/pinball_flame.dart';
 class MultiballGroup extends Component
     with Controls<MultiballController>, HasGameRef<PinballGame> {
   /// {@macro multiball_group_component}
-  MultiballGroup()
-      : super(
-          children: [
-            Multiball.a(),
-            Multiball.b(),
-            Multiball.c(),
-            Multiball.d(),
-          ],
-        ) {
+  MultiballGroup() : super() {
     controller = MultiballController(this);
   }
+
+  /// Bottom left multiball.
+  late final Multiball multiballA;
+
+  /// Center left multiball.
+  late final Multiball multiballB;
+
+  /// Center right multiball.
+  late final Multiball multiballC;
+
+  /// Bottom right multiball.
+  late final Multiball multiballD;
+
+  @override
+  Future<void> onLoad() async {
+    await super.onLoad();
+
+    await addAll([
+      multiballA = Multiball.a(),
+      multiballB = Multiball.b(),
+      multiballC = Multiball.c(),
+      multiballD = Multiball.d(),
+    ]);
+  }
 }
 
 /// {@template multiball_controller}
@@ -44,9 +60,10 @@ class MultiballController extends ComponentController<MultiballGroup>
     final hasMultiball = state.bonusHistory.contains(GameBonus.dashNest);
 
     if (hasMultiball) {
-      component.children.whereType<Multiball>().forEach((element) {
-        element.animate();
-      });
+      component.multiballA.animate();
+      component.multiballB.animate();
+      component.multiballC.animate();
+      component.multiballD.animate();
     }
   }
 }

test/game/components/controlled_multiball_test.dart

@@ -2,6 +2,7 @@
 
 import 'package:flame_test/flame_test.dart';
 import 'package:flutter_test/flutter_test.dart';
+import 'package:mocktail/mocktail.dart';
 import 'package:pinball/game/game.dart';
 import 'package:pinball_components/pinball_components.dart';
 
@@ -82,7 +83,6 @@ void main() {
         );
       });
 
-      /*
       group(
         'onNewState',
         () {
@@ -90,21 +90,24 @@ void main() {
             'blink multiballs when state changes',
             (game) async {
               final multiballGroup = MockMultiballGroup();
-              final x2multiplier = MockMultiplier();
+              final multiball = MockMultiball();
               final controller = MultiballController(multiballGroup);
-              when(() => multiballGroup.x2multiplier).thenReturn(x2multiplier);
+              when(() => multiballGroup.multiballA).thenReturn(multiball);
+              when(() => multiballGroup.multiballB).thenReturn(multiball);
+              when(() => multiballGroup.multiballC).thenReturn(multiball);
+              when(() => multiballGroup.multiballD).thenReturn(multiball);
+              when(multiball.animate).thenAnswer((_) async => () {});
 
               controller.onNewState(
                 const GameState.initial()
                     .copyWith(bonusHistory: [GameBonus.dashNest]),
               );
 
-              verify(() => x2multiplier.toggle(any())).called(1);
+              verify(() => multiball.animate).called(4);
             },
           );
         },
       );
-      */
     });
   });
 }

test/helpers/mocks.dart

@@ -85,3 +85,7 @@ class MockGameFlowController extends Mock implements GameFlowController {}
 class MockAlienBumper extends Mock implements AlienBumper {}
 
 class MockSparkyBumper extends Mock implements SparkyBumper {}
+
+class MockMultiball extends Mock implements Multiball {}
+
+class MockMultiballGroup extends Mock implements MultiballGroup {}