Spring-Boot WebMvcTest：如何使用身份验证对象参数测试控制器方法？

如何解决Spring-Boot WebMvcTest：如何使用身份验证对象参数测试控制器方法？

这是该问题的继续 Spring WebMvcTest how to mock Authentication?

我正在尝试在Spring-boot中测试一个控制器方法，该方法接收一个Authentication对象作为参数。控制器是带有RestController注释的@CrossOrigin。该方法如下所示：

@GetMapping("/authentication")
public String testAuthentication(Authentication authentication) {
    UserDetailsStub userDetailsStub = (UserDetailsStub) authentication.getPrincipal();
    return userDetailsStub.getUsername();
}

如您所见，我从参数中获取了来自身份验证的主体。

问题是，在我的WebMvcTest测试案例中，我得到了NullPointerException，因为在测试案例中，authentication似乎为空。我的问题是为什么？

我尝试添加一个given调用，该调用将在测试用例的UserDetails注释方法中返回一个自定义@PostConstruct对象，但仍然得到NullPointerException。

我的测试用例如下：

@Import(SecurityConfiguration.class)
@RunWith(SpringRunner.class)
@WebMvcTest(PDPController.class)
@AutoConfigureMockMvc(addFilters = false)
public class PDPControllerTests {

    @Autowired
    private MockMvc mvc;

    @MockBean(name = "userDetailsService")
    private MyUserDetailsService userDetailsService;
    
    //..

    @PostConstruct
    public void setup() {
        given(userDetailsService.loadUserByUsername(anyString()))
                .willReturn(new UserDetailsStub());
    }
    
    //..

    @Test
    @WithUserDetails(value = "username",userDetailsServiceBeanName = "userDetailsService")
    public void testAuthentication() throws Exception {
        mvc.perform(get("/pdps/authentication").secure(true)
                .contentType(MediaType.APPLICATION_JSON))
                .andExpect(status().isOk());
    }
    
}

即使在我用authentication方法提供的情况下，为什么测试用例中的@PostConstruct为空？

在这里可以找到带有最少代码的GitHub项目，该代码可以再现错误。 https://github.com/Kars1090/SpringSecurityTest

谢谢！

解决方法

克隆您的项目后，我已经实现了在控制器方法中收到有效的Authentication对象。基本上，您在测试中遇到两个主要问题：

1. 不必要的额外配置
2. 过滤器的模拟配置错误：JwtRequestFilter

总的来说，更改如下：

public class UserDetailsStub implements UserDetails {

  private String username;
  private String password;
  private Collection<? extends GrantedAuthority> authorities;

  public UserDetailsStub() {}
        
  public static UserDetailsStub of (User user) {
    UserDetailsStub userDetails = new UserDetailsStub();
    if (null != user) {
        userDetails.username = user.getUsername();
        userDetails.password = user.getPassword();
        userDetails.authorities = user.getAuthorities();
    }
    return userDetails;
  }

  @Override
  public Collection<? extends GrantedAuthority> getAuthorities() {
    return authorities;
  }

  @Override
  public String getPassword() {
    return password;
  }

  @Override
  public String getUsername() {
    return username;
  }
  // Rest of the code is equal to your version

您的控制器方法：

@GetMapping("/authentication")
public String testAuthentication(Authentication authentication) {
  UserDetailsStub userDetailsStub = UserDetailsStub.of((User) 
    authentication.getPrincipal());
  return userDetailsStub.getUsername();
}

测试：

@WebMvcTest(value = PDPController.class)
public class PDPControllerTests {

  @Autowired
  private MockMvc mvc;

  /** You have not to mock the filter because in that case Spring
   * won't know how to deal with it,when the list of them
   * should be managed.
   *
   * That is the reason why you had to include
   * @AutoConfigureMockMvc(addFilters = false),but that
   * is preciselly what was avoiding the creation of your
   * Authentication object,because your JwtRequestFilter
   * was not being executed.
   *
   * With the current code,your filter will be executed and
   * the Authentication object created.
   */
   //@MockBean
   //private JwtRequestFilter jwtRequestFilter;

   // What you have to mock are the classes the filter uses internally
   @MockBean
   private MyUserDetailsService userDetailsService;

   @MockBean
   private JwtService jwtService;

   @Test
   @WithMockUser
   public void test() throws Exception {
     mvc.perform(
            get("/pdps/authentication").secure(true)
                    .contentType(MediaType.APPLICATION_JSON))
            .andExpect(status().isOk());
   }
 }

,

一种（不好的）解决方法是从控制器参数中删除authentication，而是通过SecurityContextHolder.getContext().getAuthentication()获得认证。

这将使测试正常进行，而无需进行其他任何更改。