我正在努力

HistoryServiceImpl
 public Response getHistory(String cliendId, HttpServletRequest httpRequest){
 //Logic which returns a response object
  }

我想写一个简单的测试

@InjectMocks
  private HistoryServiceImpl historyService

  @Mocks

  private Response response;

在设置中，我正在这样做

Mockito.when(historyService.getHistory(Mockito.anyString(), Mockito.any())).thenReturn(response);

在测试中，我只想调用服务并Assert响应不是null

public void historytTest(){
Response resp= historyService.getHistory(Mockito.anyString(), Mockito.any());
assertNotNull(resp);

但是，我在安装程序中不断得到一个空指针异常。ay提示