java - 测试 spring mvc Controller

Question

我正在使用mockito junit框架测试我的 Controller 。

我陷入了 Controller 层，在 UserDetails 接口(interface)中出现空指针异常。

我尝试覆盖该界面，但仍然遇到问题。

这是我的默认 Controller ，仅用于 userDetails 接口(interface)来获取用户信息。

public class DefaultController {


    public UserDetails getUserDetails(){
        UserDetails userDetails=null;
        Authentication auth = SecurityContextHolder.getContext().getAuthentication();
        if (!(auth instanceof AnonymousAuthenticationToken)) {
               userDetails = (UserDetails) auth.getPrincipal();
        }
        return userDetails;
    }

    public Set<Integer> getUserCSRoles(){
        Set<Integer> csroles=new HashSet<Integer>();
        UserDetails userDetails=getUserDetails();
        if(userDetails!=null)
        for (GrantedAuthority grantedAuthority : userDetails.getAuthorities()) {
            if(grantedAuthority.getAuthority().split("_").length>1){
            if(grantedAuthority.getAuthority().split("_")[1].toString().equalsIgnoreCase("MANAGER")){
                csroles.add(1);
            }else if(grantedAuthority.getAuthority().split("_")[1].toString().equalsIgnoreCase("SHAREDSERVICE")){
                csroles.add(2);
            }else if(grantedAuthority.getAuthority().split("_")[1].toString().equalsIgnoreCase("ADMIN")){
                csroles.add(3);
            }else if(grantedAuthority.getAuthority().split("_")[1].toString().equalsIgnoreCase("SUPERADMIN")){
                csroles.add(3);
            }
            }
        }
        return csroles;
    }

这是我的ma​​nagaer Controller :

@RequestMapping(value="new",method=RequestMethod.POST)
    public String testMethod(@ModelAttribute("employeeDetails") EmployeeDetails details,HttpSession httpSession, Model model){
        UserDetails userDetails = getUserDetails();
        model.addAttribute("details", details);
        return "redirect:newemployee";
    }

为了测试经理，这就是我所做的:

@Test
    public void testnewEmployeePost() throws Exception{
        UserDetails userDetails = new UserDetails() {

            @Override
            public boolean isEnabled() {
                // TODO Auto-generated method stub
                return true;
            }

            @Override
            public boolean isCredentialsNonExpired() {
                // TODO Auto-generated method stub
                return true;
            }

            @Override
            public boolean isAccountNonLocked() {
                // TODO Auto-generated method stub
                return true;
            }

            @Override
            public boolean isAccountNonExpired() {
                // TODO Auto-generated method stub
                return true;
            }

            @Override
            public String getUsername() {
                // TODO Auto-generated method stub
                return "nitesh";
            }

            @Override
            public String getPassword() {
                // TODO Auto-generated method stub
                return "nitesh";
            }

            @Override
            public Collection<? extends GrantedAuthority> getAuthorities() {
                GrantedAuthority authority = new GrantedAuthority() {

                    @Override
                    public String getAuthority() {
                        // TODO Auto-generated method stub
                        return "ROLE_USER";
                    }
                };
                List<GrantedAuthority> grantedAuthorities = new ArrayList<GrantedAuthority>();
                grantedAuthorities.add(authority);
                return grantedAuthorities;
            }
        };

        EmployeeDetails employeeDetails = new EmployeeDetails();
        employeeDetails.setPanCardNo("lower");
        employeeDetails.setFirstName("Nitesh");

        Mockito.when(managerController.getUserDetails()).thenReturn(userDetails);

        mockMvc.perform(post("/manager/new")
                .contentType(MediaType.ALL)
                .sessionAttr("employeeDetails", employeeDetails)
                )   
                .andExpect(model().attribute("employeeDetails", instanceOf(EmployeeDetails.class)));
    }

抛出的异常是:

java.lang.NullPointerException
    at com.rectrix.ool.controller.DefaultController.getUserDetails(DefaultController.java:24)
    at com.rectrix.ool.test.controller.TestManagerController.testnewEmployeePost(TestManagerController.java:172)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
    at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:74)
    at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:83)
    at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:72)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:231)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:88)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:174)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)

请指导我解决这个问题

Answer 1

您不需要创建匿名 UserDetails 实例。您可以使用 User，它是 Spring Security 中已有的 UserDetails 的实现。无论如何，这甚至不是必需的。并且您正在尝试模拟 ManagerController 的父类 DefaultController。我从未见过或听说过能够 mock 一段关系。你应该做的是导入依赖项

<dependency>
    <groupId>org.springframework.security</groupId>
    <artifactId>spring-security-test</artifactId>
    <version>4.0.4.RELEASE</version>
</dependency>

并按如下方式重写您的测试以模拟经过身份验证的用户。

 import static org.springframework.security.test.web.servlet.request.SecurityMockMvcRequestPostProcessors.user;

    @Test
    public void testnewEmployeePost() throws Exception{


        EmployeeDetails employeeDetails = new EmployeeDetails();
        employeeDetails.setPanCardNo("lower");
        employeeDetails.setFirstName("Nitesh");

        mockMvc.perform(post("/manager/new")
            .with(user("nitesh")
            .password("nitesh")
            .authorities(AuthorityUtils.createAuthorityList("ROLE_USER"))
        .contentType(MediaType.ALL)
        .sessionAttr("employeeDetails", employeeDetails))   
        .andExpect(model().attribute("employeeDetails", instanceOf(EmployeeDetails.class)));
    }