import junit.framework.TestCase;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
@RunWith(SpringRunner.class)    //底層用junit的 SpringJUnit4ClassRunner
@SpringBootTest(classes = {XdclassSpringbootApplication.class})
public class XdclassSpringbootApplicationTests {
    @Test
    public void testOne() {
        System.out.println("start test");
        Assert.assertEquals(1,1);
        TestCase.assertEquals(1,2);
    }
}

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.test.context.junit4.SpringRunner;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.MvcResult;
import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
import org.springframework.test.web.servlet.result.MockMvcResultMatchers;
@RunWith(SpringRunner.class)
@SpringBootTest
@AutoConfigureMockMvc
public class MockMvcTestDemo {
    @Autowired
    private MockMvc mockMvc;
    @Test
    public void apiTest(){
        try {
            MvcResult mvcResult = mockMvc.perform(MockMvcRequestBuilders.get("/hello"))
                    .andExpect(MockMvcResultMatchers.status().isOk())　　　　　　　　　　　　.andReturn();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}