今天，在为一种Java方法编写单元测试用例时，如下所示：

public ApplicationUser getApplicationUser() {ApplicationUser applicationUser = (ApplicationUser) SecurityContextHolder.getContext().getAuthentication().getPrincipal();return applicationUser;
}

我想模拟Spring Security Context以获取Principal，以实现与我模拟方法的每个级别相同的目标，如下所示：

import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import static org.mockito.Mockito.when;
import static org.mockito.Mockito.mock;
import org.mockito.MockitoAnnotations;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContext;
import org.springframework.security.core.context.SecurityContextHolder;
import com.arpit.security.user.ApplicationUser;public class BaseTest {@Beforepublic void setupMock() {MockitoAnnotations.initMocks(this);}@Testpublic void mockApplicationUser() {ApplicationUser applicationUser = mock(ApplicationUser.class);Authentication authentication = mock(Authentication.class);SecurityContext securityContext = mock(SecurityContext.class);when(securityContext.getAuthentication()).thenReturn(authentication);SecurityContextHolder.setContext(securityContext);when(SecurityContextHolder.getContext().getAuthentication().getPrincipal()).thenReturn(applicationUser);}}

翻译自: https://www.javacodegeeks.com/2017/05/mocking-spring-security-context-unit-testing.html