java - Mockito 和 Powermockito org.mockito.exceptions.misusing.InvalidUseOfMatchersException:检测到错误放置的参数匹配器
问题描述
我想为下面的 spring MVC 控制器编写单元测试用例。
@Controller
@Configuration
@PropertySource("classpath:project/web/properties/RealTimeAPI.properties")
@RequestMapping("/learnon")
public class ClassManagerController {
private final Logger logger = Logger.getLogger(ClassManagerController.class);
@Autowired
private ClassManagerService classManagerService;
@Autowired
private GroupUserService groupUserService;
@RequestMapping(value = "/teacher", method = RequestMethod.GET)
public ModelAndView showClassDetail(HttpServletRequest request, HttpSession httpSession,
@RequestParam(value = "isbn", required = false) String isbn13,
@RequestParam(value = "classId", required = false) Long classId) {
String redirectUrl = "https://example.com/jsp/Login.jsp?reason=failedLogin&redirectUri=https://example.com/secure/Bookshelf";
String accessDeniedUri = "https://example.com/jsp/AccessDenied.jsp";
if (httpSession.getAttribute("USERID") == null) {
return new ModelAndView("redirect:" + redirectUrl);
}
try {
long userId = Long.parseLong(httpSession.getAttribute("USERID").toString());
UserBean user = classManagerService.getUser(userId);
if (httpSession.getAttribute("SCHOOLID") == null) {
httpSession.setAttribute("SCHOOLID", user.getSchoolId());
}
if (httpSession.getAttribute("FULLFILLMENT_YEAR") == null) {
httpSession.setAttribute("FULLFILLMENT_YEAR", user.getFulfillmentYear());
}
String isbn10 = ISBNUtil.convertIsbn13ToIsbn10(isbn13);
String title = "";
ModelAndView mav = null;
ClassManagerBean classBean = null;
if(classId == null && httpSession.getAttribute("classId") != null){
classId = (Long)httpSession.getAttribute("classId");
}
if(classId != null && classId > 0) {
List<UserBean> userBeanList = classManagerService.getUserList(user.getSchoolId(), classId, isbn10);
classBean = classManagerService.getClassById(classId);
classBean.setUserNumber(userBeanList.size());
title = classBean.getTitle();
//Set the view to ClassManager.jsp
mav = new ModelAndView("ClassManager");
mav.addObject("userList", userBeanList);
boolean authorized = userBeanList.stream().anyMatch(u->u.getUserId() == userId);
if(!authorized){
ModelAndView modelAndView = new ModelAndView("redirect:" + accessDeniedUri);
modelAndView.addObject("accessDenied", "true");
return modelAndView;
}
}else{
title = classManagerService.getTitle(isbn10);
//Set the view to createNewClass.jsp
mav = new ModelAndView("CreateNewClass");
classBean = new ClassManagerBean();
classBean.setLo2Flag(true);
classBean.setIsbn(isbn10);
classBean.setTitle(title);
}
httpSession.setAttribute("searchTitle", title);
httpSession.setAttribute("selectedIsbn", isbn10);
httpSession.setAttribute("classId", classId);
mav.addObject("user", user);
mav.addObject("classBean", classBean);
return mav;
} catch (Exception ex) {
ModelAndView mav2 = new ModelAndView("redirect:" + accessDeniedUri);
mav2.addObject("accessDenied", "true");
logger.error("Exception Occurred, Redirecting to Access Denied...", ex);
return mav2;
}
}
}
我为上述类编写了以下单元测试用例。
@RunWith(PowerMockRunner.class) 公共类 ClassManagerControllerTest {
public ClassManagerService classManagerService;
public GroupUserService groupUserService;
private MockMvc mockMvc;
@InjectMocks
private ClassManagerController classManagerController;
@Before
public void setUp() {
classManagerService = Mockito.mock(ClassManagerService.class);
groupUserService = Mockito.mock(GroupUserService.class);
mockMvc = MockMvcBuilders.standaloneSetup(classManagerController).build();
}
@Test
public void testShowClassDetail() throws Exception {
HttpServletRequest httpRequest = mock(HttpServletRequest.class);
HttpSession httpSession = mock(HttpSession.class);
Mockito.when(httpSession.getAttribute("USERID")).thenReturn(null);
RequestBuilder request = MockMvcRequestBuilders
.get("/learnon/teacher")
.param("isbn", "1234567890123")
.param("classId", "1")
.accept(MediaType.APPLICATION_JSON);
String modalView = "redirect:" + "https://example.com/jsp/Login.jsp?reason=failedLogin&redirectUri=https://www.example.com/secure/Bookshelf";
ResultActions result = mockMvc.perform(request)
.andExpect(status().is3xxRedirection())
.andExpect(view().name(modalView));
}
@Test
public void testShowClassDetail1() throws Exception {
HttpServletRequest httpRequest = mock(HttpServletRequest.class);
HttpSession httpSession = mock(HttpSession.class);
Mockito.when(httpSession.getAttribute("USERID")).thenReturn(Mockito.anyString());
//Line 87
List<UserBean> spyList = Mockito.mock(List.class);
Mockito.when(classManagerService.getUserList(Mockito.anyLong(), Mockito.anyLong(), Mockito.anyString())).thenReturn(spyList);
Mockito.when(spyList.stream().anyMatch(u->u.getUserId() == Mockito.anyLong())).thenReturn(true);
RequestBuilder request = MockMvcRequestBuilders
.get("/learnon/teacher")
.param("isbn", "1234567890123")
.param("classId", "1")
.accept(MediaType.APPLICATION_JSON);
String modalView = "redirect:" + "https://example.com/jsp/AccessDenied.jsp";
ResultActions result = mockMvc.perform(request)
.andExpect(status().is3xxRedirection())
.andExpect(view().name(modalView));
}
第一个单元测试用例成功通过。
第二次测试失败,出现以下错误。
org.mockito.exceptions.misusing.InvalidUseOfMatchersException:此处检测到错误放置的参数匹配器:
-> 在 learnonclassmanager.spring.web.controller.ClassManagerControllerTest.testShowClassDetail1(ClassManagerControllerTest.java:87)
您不能在验证或存根之外使用参数匹配器。正确使用参数匹配器的示例:when(mock.get(anyInt())).thenReturn(null); doThrow(new RuntimeException()).when(mock).someVoidMethod(anyObject()); 验证(模拟).someMethod(包含(“foo”))
此外,此错误可能会出现,因为您将参数匹配器与无法模拟的方法一起使用。以下方法不能被存根/验证:final/private/equals()/hashCode()。不支持在非公共父类上声明的模拟方法。
在 learnonclassmanager.spring.web.controller.ClassManagerControllerTest.testShowClassDetail1(ClassManagerControllerTest.java:90) 在 sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 在 sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 在 sun.reflect .DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
解决方案
问题在于代码:
Mockito.when(httpSession.getAttribute("USERID")).thenReturn(Mockito.anyString());
httpSession.getAttribute("USERID") 实际上返回“对象”,而您正在返回一个字符串。
如果你试试,
Mockito.when(httpSession.getAttribute("USERID")).thenReturn(new String("anyString"));,
然后我工作得很好。
希望它对你有用。
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