@Test
	void instanceId() {
		TestPropertyValues.of("eureka.instance.instanceId:special").applyTo(this.context);
		setupContext();
		EurekaInstanceConfigBean instance = getInstanceConfig();
		assertThat(instance.getInstanceId()).isEqualTo("special");
	}
@author Dave Syer
@author Spencer Gibb
@author Ryan Baxter
@author Tim Ysewyn
spring-cloud-netflix-eureka-client/src/test/java/org/springframework/cloud/netflix/eureka/EurekaInstanceConfigBeanTests.java