Spring Boot Mock for Restful API testing CRUD

package vip.fkandy;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.http.MediaType;
import org.springframework.mock.web.MockMultipartFile;
import org.springframework.test.context.junit4.SpringRunner;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.setup.MockMvcBuilders;
import org.springframework.web.context.WebApplicationContext;

import java.time.LocalDateTime;
import java.time.ZoneId;
import java.util.Date;

import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.*;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;

/**
 * Spring Boot test cases
 */
@RunWith(SpringRunner.class)
@SpringBootTest
public class UserControllerTest {
    //Forge the MVC environment, it will not really start tomcat, so it will be very fast
    @Autowired
    private WebApplicationContext context;

    private MockMvc mockMvc;

    /**
     * Execute before each test case is executed
     */
    @Before
    public void setUp() {
        mockMvc = MockMvcBuilders.webAppContextSetup(context).build();
    }

    /**
     * Query list success test case
     *
     * @throws Exception
     */
    @Test
    public void whenQuerySuccess() throws Exception {
        String result = mockMvc.perform(
                get("/user")
                        .param("username", "jojo")
                        .param("age", "18")
                        .param("ageTo", "60")
                        .param("size", "15")
                        .param("page", "3")
                        .param("sort", "age,desc")
                        .contentType(MediaType.APPLICATION_JSON_UTF8))
                .andExpect (status (). isOk ())
                .andExpect(jsonPath("$.length()")
                        .value(3))
                .andReturn().getResponse().getContentAsString();

        System.out.println("Result:" + result);
    }

    /**
     * Get user details test case
     *
     * @throws Exception
     */
    @Test
    public void whenGetInfoSuccess() throws Exception {
        String result = mockMvc.perform(
                get("/user/1")
                        .contentType(MediaType.APPLICATION_JSON_UTF8))
                .andExpect (status (). isOk ())
                .andExpect(jsonPath("$.username")
                        .value("zhangsan"))
                .andReturn().getResponse().getContentAsString();

        System.out.println(result);
    }

    /**
     * Get user information failed test case
     *
     * @throws Exception
     */
    @Test
    public void whenGetInfoFail() throws Exception {
        mockMvc.perform(get("/user/a")
                .contentType(MediaType.APPLICATION_JSON_UTF8))
                .andExpect(status().is4xxClientError());
    }

    /**
     * Create user success test case
     *
     * @throws Exception
     */
    @Test
    public void whenCreateSuccess() throws Exception {
        Date date = new Date();
        String content = "{\"username\":\"tom\",\"password\":\"123456\",\"birthday\":" + date.getTime() + "}";
        String reuslt = mockMvc.perform(post("/user").contentType(MediaType.APPLICATION_JSON_UTF8)
                .content(content))
                .andExpect (status (). isOk ())
                .andExpect(jsonPath("$.id").value("1"))
                .andReturn().getResponse().getContentAsString();
        System.out.println(reuslt);
    }

    /**
     * Create failed test cases
     *
     * @throws Exception
     */
    @Test
    public void whenCreateFail() throws Exception {
        Date date = new Date();
        System.out.println(date.getTime());
        String content = "{\"username\":\"tom\",\"password\":null,\"birthday\":" + date.getTime() + "}";
        String reuslt = mockMvc.perform(post("/user").contentType(MediaType.APPLICATION_JSON_UTF8)
                .content(content))
                .andExpect (status (). isOk ())
                .andExpect(jsonPath("$.id").value("1"))
                .andReturn().getResponse().getContentAsString();

        System.out.println("---" + reuslt);
    }

    /**
     * Modify user information successfully test case
     *
     * @throws Exception
     */
    @Test
    public void whenUpdateSuccess() throws Exception {
        Date date = new Date(LocalDateTime.now().plusYears(1).atZone(ZoneId.systemDefault()).toInstant().toEpochMilli());
        System.out.println(date.getTime());
        String content = "{\"id\":\"1\", \"username\":\"tom\",\"password\":null,\"birthday\":" + date.getTime() + "}";
        String reuslt = mockMvc.perform(put("/user/1").contentType(MediaType.APPLICATION_JSON_UTF8)
                .content(content))
                .andExpect (status (). isOk ())
                .andExpect(jsonPath("$.id").value("1"))
                .andReturn().getResponse().getContentAsString();

        System.out.println(reuslt);
    }

    /**
     * Delete user success test case
     *
     * @throws Exception
     */
    @Test
    public void whenDeleteSuccess() throws Exception {
        mockMvc.perform(delete("/user/1")
                .contentType(MediaType.APPLICATION_JSON_UTF8))
                .andExpect(status().isOk()); //Because it is a restful api, you only need to check the status code
    }

    /**
     * Upload successful test case
     *
     * @throws Exception
     */
    @Test
    public void whenUploadSuccess() throws Exception {
        String result = mockMvc.perform(fileUpload("/file")
                .file(new MockMultipartFile("file", "test.txt", "multipart/form-data", "hello upload".getBytes("UTF-8"))))
                .andExpect (status (). isOk ())
                .andReturn().getResponse().getContentAsString();
        System.out.println(result);
    }
}