@Test
  public void serviceRegistration() throws Exception {
    AstrixServiceRegistry serviceRegistry = clientContext.getBean(AstrixServiceRegistry.class);
    ServiceRegistryClient serviceRegistryClient =
        clientContext.getBean(ServiceRegistryClient.class);
    ServiceRegistryExporterClient exporterClient1 =
        new ServiceRegistryExporterClient(serviceRegistry, "default", "app-instance-1");
    ServiceRegistryExporterClient exporterClient2 =
        new ServiceRegistryExporterClient(serviceRegistry, "default", "app-instance-2");

    ServiceProperties server1Props = new ServiceProperties();
    server1Props.getProperties().put("myProp", "1");
    ServiceProperties server2 = new ServiceProperties();
    server2.getProperties().put("myProp", "1");
    exporterClient1.register(SomeService.class, server1Props, 10000);
    exporterClient2.register(SomeService.class, server2, 10000);
    exporterClient2.register(AnotherService.class, new ServiceProperties(), 10000);

    List<ServiceProperties> providers =
        serviceRegistryClient.list(AstrixBeanKey.create(SomeService.class));
    assertEquals(2, providers.size());

    server1Props = new ServiceProperties();
    server1Props.getProperties().put("myProp", "3");
    exporterClient1.register(SomeService.class, server1Props, 10000);

    providers = serviceRegistryClient.list(AstrixBeanKey.create(SomeService.class));
    assertEquals(2, providers.size());
    ServiceProperties serviceProperties = getPropertiesForAppInstance("app-instance-1", providers);
    assertEquals("3", serviceProperties.getProperty("myProp"));
  }
 private ServiceProperties getPropertiesForAppInstance(
     String appInstanceId, List<ServiceProperties> providers) {
   for (ServiceProperties properties : providers) {
     if (appInstanceId.equals(
         properties.getProperties().get(ServiceProperties.APPLICATION_INSTANCE_ID))) {
       return properties;
     }
   }
   return null;
 }