package demo; import org.junit.Test; import org.junit.runner.RunWith; import org.springframework.boot.context.embedded.LocalServerPort; import org.springframework.boot.test.context.SpringBootTest; import org.springframework.boot.test.context.SpringBootTest.WebEnvironment; import org.springframework.test.annotation.DirtiesContext; import org.springframework.test.context.junit4.SpringRunner; @RunWith(SpringRunner.class) @SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT) @DirtiesContext public class ZuulConfigDiscoveryApplicationTests { @LocalServerPort private int port; @Test public void contextLoads() { } }