Program: 301
Project: 301
Buggy source:
@Before public void setup(){
  ContextImpl context=new ContextImpl();
  CoreRegistry.setContext(context);
  ReflectFactory reflectFactory=new ReflectionReflectFactory();
  CopyStrategyLibrary copyStrategies=new CopyStrategyLibrary(reflectFactory);
  TypeSerializationLibrary serializationLibrary=new TypeSerializationLibrary(reflectFactory,copyStrategies);
  EntitySystemLibrary entitySystemLibrary=new EntitySystemLibrary(context,serializationLibrary);
  PojoEntityManager entityManager=new PojoEntityManager();
  entityManager.setComponentLibrary(entitySystemLibrary.getComponentLibrary());
  entityManager.setPrefabManager(new PojoPrefabManager(context));
  NetworkSystem networkSystem=mock(NetworkSystem.class);
  when(networkSystem.getMode()).thenReturn(NetworkMode.NONE);
  RecordedEventStore eventStore=new RecordedEventStore();
  EntityIdMap entityIdMap=new EntityIdMap();
  RecordAndReplayUtils recordAndReplayUtils=new RecordAndReplayUtils();
  RecordAndReplaySerializer recordAndReplaySerializer=new RecordAndReplaySerializer(entityManager,eventStore,entityIdMap,recordAndReplayUtils);
  RecordAndReplayStatus.setCurrentStatus(RecordAndReplayStatus.REPLAYING);
  entity=entityManager.create();
  Long id=entity.getId();
  eventStore.add(new RecordedEvent(id,new AttackButton(),1,1));
  eventStore.add(new RecordedEvent(id,new AttackButton(),2,2));
  eventStore.add(new RecordedEvent(id,new AttackButton(),3,3));
  List<Class<?>> selectedClassesToReplay=new ArrayList<>();
  selectedClassesToReplay.add(InputEvent.class);
  eventSystem=new EventSystemReplayImpl(entitySystemLibrary.getEventLibrary(),networkSystem,entityManager,eventStore,entityIdMap,recordAndReplaySerializer,recordAndReplayUtils,selectedClassesToReplay);
  entityManager.setEventSystem(eventSystem);
  handler=new TestEventHandler();
  eventSystem.registerEventHandler(handler);
}

Fixed version (ground truth):
@Before public void setup(){
  ContextImpl context=new ContextImpl();
  CoreRegistry.setContext(context);
  ReflectFactory reflectFactory=new ReflectionReflectFactory();
  CopyStrategyLibrary copyStrategies=new CopyStrategyLibrary(reflectFactory);
  TypeSerializationLibrary serializationLibrary=new TypeSerializationLibrary(reflectFactory,copyStrategies);
  EntitySystemLibrary entitySystemLibrary=new EntitySystemLibrary(context,serializationLibrary);
  PojoEntityManager entityManager=new PojoEntityManager();
  entityManager.setComponentLibrary(entitySystemLibrary.getComponentLibrary());
  entityManager.setPrefabManager(new PojoPrefabManager(context));
  NetworkSystem networkSystem=mock(NetworkSystem.class);
  when(networkSystem.getMode()).thenReturn(NetworkMode.NONE);
  RecordedEventStore eventStore=new RecordedEventStore();
  EntityIdMap entityIdMap=new EntityIdMap();
  RecordAndReplayUtils recordAndReplayUtils=new RecordAndReplayUtils();
  CharacterStateEventPositionMap characterStateEventPositionMap=new CharacterStateEventPositionMap();
  RecordAndReplaySerializer recordAndReplaySerializer=new RecordAndReplaySerializer(entityManager,eventStore,entityIdMap,recordAndReplayUtils,characterStateEventPositionMap);
  RecordAndReplayStatus.setCurrentStatus(RecordAndReplayStatus.REPLAYING);
  entity=entityManager.create();
  Long id=entity.getId();
  eventStore.add(new RecordedEvent(id,new AttackButton(),1,1));
  eventStore.add(new RecordedEvent(id,new AttackButton(),2,2));
  eventStore.add(new RecordedEvent(id,new AttackButton(),3,3));
  List<Class<?>> selectedClassesToReplay=new ArrayList<>();
  selectedClassesToReplay.add(InputEvent.class);
  eventSystem=new EventSystemReplayImpl(entitySystemLibrary.getEventLibrary(),networkSystem,entityManager,eventStore,entityIdMap,recordAndReplaySerializer,recordAndReplayUtils,selectedClassesToReplay);
  entityManager.setEventSystem(eventSystem);
  handler=new TestEventHandler();
  eventSystem.registerEventHandler(handler);
}