test: contact callback test

lib/game/components/controlled_sparky_computer.dart

@@ -1,5 +1,8 @@
+// ignore_for_file: avoid_renaming_method_parameters
+
 import 'package:flame/components.dart';
 import 'package:flame_forge2d/flame_forge2d.dart';
+import 'package:flutter/material.dart';
 import 'package:pinball/flame/flame.dart';
 import 'package:pinball/game/game.dart';
 import 'package:pinball_components/pinball_components.dart';
@@ -16,22 +19,40 @@ class ControlledSparkyComputer extends SparkyComputer
 
   @override
   void build(Forge2DGame _) {
-    addContactCallback(_SparkyTurboChargeSensorBallContactCallback());
-    final sparkyTurboChargeSensor = _SparkyTurboChargeSensor()
+    addContactCallback(SparkyTurboChargeSensorBallContactCallback());
+    final sparkyTurboChargeSensor = SparkyTurboChargeSensor()
       ..initialPosition = Vector2(-13, 49.8);
     add(sparkyTurboChargeSensor);
     super.build(_);
   }
 }
 
-class _SparkyTurboChargeSensor extends BodyComponent with InitialPosition {
-  _SparkyTurboChargeSensor() {
+/// {@template sparky_computer_controller}
+/// Controller attached to a [SparkyComputer] that handles its game related
+/// logic.
+/// {@endtemplate}
+// TODO(allisonryan0002): listen for turbo charge game bonus and animate Sparky.
+class SparkyComputerController
+    extends ComponentController<ControlledSparkyComputer> {
+  /// {@macro sparky_computer_controller}
+  SparkyComputerController(ControlledSparkyComputer controlledComputer)
+      : super(controlledComputer);
+}
+
+/// {@template sparky_turbo_charge_sensor}
+/// Small sensor body used to detect when a ball has entered the
+/// [SparkyComputer] with the [SparkyTurboChargeSensorBallContactCallback].
+/// {@endtemplate}
+@visibleForTesting
+class SparkyTurboChargeSensor extends BodyComponent with InitialPosition {
+  /// {@macro sparky_turbo_charge_sensor}
+  SparkyTurboChargeSensor() {
     renderBody = false;
   }
 
   @override
   Body createBody() {
-    final shape = CircleShape()..radius = .1;
+    final shape = CircleShape()..radius = 0.1;
 
     final fixtureDef = FixtureDef(shape)..isSensor = true;
 
@@ -43,25 +64,18 @@ class _SparkyTurboChargeSensor extends BodyComponent with InitialPosition {
   }
 }
 
-/// {@template sparky_computer_controller}
-/// Controller attached to a [SparkyComputer] that handles its game related
-/// logic.
+/// {@template sparky_turbo_charge_sensor_ball_contact_callback}
+/// Turbo charges the [Ball] on contact with [SparkyTurboChargeSensor].
 /// {@endtemplate}
-// TODO(allisonryan0002): listen for turbo charge game bonus and animate Sparky.
-class SparkyComputerController
-    extends ComponentController<ControlledSparkyComputer> {
-  /// {@macro sparky_computer_controller}
-  SparkyComputerController(ControlledSparkyComputer controlledComputer)
-      : super(controlledComputer);
-}
-
-class _SparkyTurboChargeSensorBallContactCallback
-    extends ContactCallback<_SparkyTurboChargeSensor, ControlledBall> {
-  _SparkyTurboChargeSensorBallContactCallback();
+@visibleForTesting
+class SparkyTurboChargeSensorBallContactCallback
+    extends ContactCallback<SparkyTurboChargeSensor, ControlledBall> {
+  /// {@macro sparky_turbo_charge_sensor_ball_contact_callback}
+  SparkyTurboChargeSensorBallContactCallback();
 
   @override
   void begin(
-    _SparkyTurboChargeSensor sparkyTurboChargeSensor,
+    SparkyTurboChargeSensor sparkyTurboChargeSensor,
     ControlledBall ball,
     _,
   ) {

test/game/components/controlled_sparky_computer_test.dart

@@ -1,10 +1,17 @@
 // ignore_for_file: cascade_invocations
 
+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 '../../helpers/helpers.dart';
+
 void main() {
   group('SparkyComputerController', () {
+    TestWidgetsFlutterBinding.ensureInitialized();
+    final flameTester = FlameTester(EmptyPinballGameTest.new);
+
     late ControlledSparkyComputer controlledSparkyComputer;
 
     setUp(() {
@@ -17,5 +24,22 @@ void main() {
         isA<SparkyComputerController>(),
       );
     });
+
+    flameTester.testGameWidget(
+      'SparkyTurboChargeSensorBallContactCallback turbo charges the ball',
+      setUp: (game, tester) async {
+        final contackCallback = SparkyTurboChargeSensorBallContactCallback();
+        final sparkyTurboChargeSensor = MockSparkyTurboChargeSensor();
+        final ball = MockControlledBall();
+        final controller = MockBallController();
+
+        when(() => ball.controller).thenReturn(controller);
+        when(controller.turboCharge).thenAnswer((_) async {});
+
+        contackCallback.begin(sparkyTurboChargeSensor, ball, MockContact());
+
+        verify(() => ball.controller.turboCharge()).called(1);
+      },
+    );
   });
 }

test/helpers/mocks.dart

@@ -74,3 +74,6 @@ class MockComponentSet extends Mock implements ComponentSet {}
 class MockDashNestBumper extends Mock implements DashNestBumper {}
 
 class MockPinballAudio extends Mock implements PinballAudio {}
+
+class MockSparkyTurboChargeSensor extends Mock
+    implements SparkyTurboChargeSensor {}