springboot-learning-example/chapter-1-spring-boot-quickstart/src/test/java/demo/springboot/QuickStartApplicationTests.java

package demo.springboot;


import org.junit.Test;
import org.junit.runner.RunWith;
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.http.MediaType;
import org.springframework.test.context.TestPropertySource;
import org.springframework.test.context.junit4.SpringRunner;
import org.springframework.test.web.servlet.MockMvc;

import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;

@RunWith(SpringRunner.class)
@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT, classes = QuickStartApplication.class)
@AutoConfigureMockMvc
@TestPropertySource(locations = "classpath:application.properties")
public class QuickStartApplicationTests {

    @Autowired
    private MockMvc mvc;


    @Test
    public void requestHello_thenStatus200_and_outputHello() throws Exception {
        mvc.perform(get("/hello")
                .contentType(MediaType.APPLICATION_JSON))
                .andExpect(status().isOk())
                .andExpect(content().contentTypeCompatibleWith(MediaType.TEXT_PLAIN))
                .andExpect(content().encoding("UTF-8"))
                .andExpect(content().string("Hello，Spring Boot！"));
    }

}