unit-test-security-authorization

Test @PreAuthorize authorization by writing unit tests with @WithMockUser to mock authenticated principals, then assert that secured methods grant or deny access based on roles. MockMvc and spring-security-test handle authentication context injection for controller and service-layer tests.

Yes. Use spring-security-test with JUnit 5 to validate RBAC policies by mocking users with specific roles, then confirm @PreAuthorize, @Secured, and @RolesAllowed annotations enforce correct access decisions for admin, user, and anonymous scenarios.

Write tests that execute secured endpoints or methods with insufficient roles and assert AccessDeniedException or HTTP 403 responses. Spring Security test utilities and MockMvc capture authorization failures without requiring live authentication.

Add spring-boot-starter-security, spring-boot-starter-test, and spring-security-test to your project. These provide MockMvc, @WithMockUser, and authentication mocking required for testing @PreAuthorize and custom permission evaluators in unit tests.

Yes. MockMvc supports testing custom permission evaluators by injecting mocked authentication principals with @WithMockUser or programmatic SecurityContext setup, allowing you to verify custom authorization logic alongside standard RBAC policies.

Unit tests with MockMvc isolate authorization logic from the full application stack, execute faster, and let you validate specific role and permission combinations. Spring Security test utilities mock authentication context without requiring a running server.