@Test
	void testDefaultAppName() {
		setupContext();
		assertThat(getInstanceConfig().getAppname()).isEqualTo("unknown");
		assertThat(getInstanceConfig().getVirtualHostName()).isEqualTo("unknown");
		assertThat(getInstanceConfig().getSecureVirtualHostName()).isEqualTo("unknown");
	}
@author Spencer Gibb
@author Matt Jenkins
@author Olga Maciaszek-Sharma
@author Tim Ysewyn
spring-cloud-netflix-eureka-client/src/test/java/org/springframework/cloud/netflix/eureka/EurekaClientAutoConfigurationTests.java