How do I unit test spring security @PreAuthorize custom expression

Question

    @PostMapping
        @ResponseStatus(HttpStatus.CREATED)
        @PreAuthorize("@messageSecurityService.isAuthorized(#userAuthentication)")
        public          


        

Answer 1

Have you stub the return of the @MockBean e.g

@MockBean(name = "messageSecurityService")
public MessageSecurityService messageSecurityService;

@Test
public void testing(){
 when(messageSecurityService.isAuthorized(anyString())).thenReturn("somethingHere");
 //rest of your assertions
}

also have you added the following in your test class:

@BeforeEach
public void init() {
    MockitoAnnotations.initMocks(this);
}