如何对spring boot自动配置进行单元测试

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-test</artifactId>
    <scope>test</scope>
</dependency>

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.test.context.junit4.SpringRunner;

import static org.junit.Assert.assertEquals;

@RunWith(SpringRunner.class)
@SpringBootTest
public class AutoConfigurationTest {

    @Autowired
    private MyAutoConfiguration myAutoConfiguration;

    @Test
    public void testAutoConfiguration() {
        // 测试自动配置是否生效
        assertEquals("Hello, World!", myAutoConfiguration.getMessage());
    }
}