spirng boot 测试

import static org.assertj.core.api.Assertions.assertThat;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;

import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
import org.springframework.boot.test.web.client.TestRestTemplate;
import org.springframework.boot.web.server.LocalServerPort;

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

	@LocalServerPort
	private int port;

	@Autowired
	private TestRestTemplate restTemplate;

	@Autowired
	private UserController userController;

	@Autowired
	private ObjectMapper om;

	@Test
	public void contextLoads() throws Exception {
		assertThat(userController).isNotNull();
	}

	@Test
	public void hello() throws JsonMappingException, JsonProcessingException {
		String resStr = this.restTemplate.getForObject("http://localhost:" + port + "/v1/users/hello", String.class);
		JsonNode resJson = om.readTree(resStr);

		assertThat(resJson.get("data").asText()).isEqualTo("hello world");
	}

}

@SpringBootTest
@AutoConfigureMockMvc
public class UserControllerMockTest {

	@Autowired
	private ObjectMapper om;

	@Autowired
	private MockMvc mockMvc;

	@Test
	public void shouldReturnDefaultMessage() throws Exception {
		String resStr = this.mockMvc//
				.perform(get("/v1/users/hello")//
						.contentType(MediaType.APPLICATION_JSON))//
				.andDo(print())//
				.andExpect(status().isOk())//
				.andReturn()//
				.getResponse()//
				.getContentAsString();

		JsonNode resJson = om.readTree(resStr);

		assertThat(resJson.get("data").asText()).isEqualTo("hello world");
	}

}