SpringBootTestWithSecurity.java

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.boot.test.mock.mockito.MockBean;
import org.springframework.security.test.context.support.WithMockUser;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.setup.MockMvcBuilders;
import org.springframework.web.context.WebApplicationContext;

import java.util.Arrays;
import java.util.Date;
import java.util.List;

import static org.hamcrest.Matchers.is;
import static org.hamcrest.collection.IsCollectionWithSize.hasSize;
import static org.mockito.Mockito.when;
import static org.springframework.security.test.web.servlet.setup.SecurityMockMvcConfigurers.springSecurity;
import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;

@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
@AutoConfigureMockMvc
public class TodoControllerTest {

    @Autowired
    private MockMvc mockMvc;

    @Autowired
    private WebApplicationContext context;

    @MockBean
    private UserService userService;

    @BeforeEach
    public void setup() {
        mockMvc = MockMvcBuilders
                .webAppContextSetup(context)
                .apply(springSecurity())
                .build();
    }

    @WithMockUser
    @Test
    void test() throws Exception {

        List<User> users = Arrays.asList(
                new User(1, "Vicky", new Date(), "Chennai"));

        when(userService.getAllUser()).thenReturn(users);

        mockMvc.perform(get("/user"))
               // .andExpect(content().contentType(MediaType.APPLICATION_JSON_VALUE))
                .andExpect(status().isOk())
                .andExpect(jsonPath("$", hasSize(1)))
                .andExpect(jsonPath("$[0].name", is("Vicky")))
                .andExpect(jsonPath("$[0].city", is("Chennai")));
    }

    @WithMockUser
    @Test
    void test2() throws Exception {

        User user = new User(1, "Vicky", new Date(), "Chennai");

        when(userService.getUser("Vicky")).thenReturn(user);

        mockMvc.perform(get("/user/"+user.getName()))
                // .andExpect(content().contentType(MediaType.APPLICATION_JSON_VALUE))
                .andExpect(status().isOk())
                .andExpect(jsonPath("$.name", is("Vicky")))
                .andExpect(jsonPath("$.city", is("Chennai")));
    }

}

// In pom.xml
/**
<dependency>
			<groupId>org.springframework.security</groupId>
			<artifactId>spring-security-test</artifactId>
			<scope>test</scope>
</dependency>
**/