chore: update test cases

packages/pinball_components/test/src/components/chrome_dino/cubit/chrome_dino_cubit_test.dart

@@ -36,7 +36,8 @@ void main() {
       );
 
       blocTest<ChromeDinoCubit, ChromeDinoState>(
-        'onChomp emits ChromeDinoStatus.chomping and chomped ball',
+        'onChomp emits ChromeDinoStatus.chomping and chomped ball '
+        'when the ball is not in the mouth',
         build: ChromeDinoCubit.new,
         act: (bloc) => bloc.onChomp(ball),
         expect: () => [
@@ -54,6 +55,14 @@ void main() {
         ],
       );
 
+      blocTest<ChromeDinoCubit, ChromeDinoState>(
+        'onChomp emits nothing when the ball is already in the mouth',
+        build: ChromeDinoCubit.new,
+        seed: () => const ChromeDinoState.inital().copyWith(ball: ball),
+        act: (bloc) => bloc.onChomp(ball),
+        expect: () => <ChromeDinoState>[],
+      );
+
       blocTest<ChromeDinoCubit, ChromeDinoState>(
         'onSpit emits ChromeDinoStatus.idle and removes ball',
         build: ChromeDinoCubit.new,