content: /*
   *
   * Copyright 1999-2018 Alibaba Group Holding Ltd.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   *
   */
  
  package com.alibaba.nacos.client.naming.remote;
  
  import com.alibaba.nacos.api.ability.constant.AbilityKey;
  import com.alibaba.nacos.api.exception.NacosException;
  import com.alibaba.nacos.api.naming.pojo.Instance;
  import com.alibaba.nacos.api.naming.pojo.Service;
  import com.alibaba.nacos.api.naming.pojo.ServiceInfo;
  import com.alibaba.nacos.api.selector.AbstractSelector;
  import com.alibaba.nacos.api.selector.ExpressionSelector;
  import com.alibaba.nacos.api.selector.NoneSelector;
  import com.alibaba.nacos.client.env.NacosClientProperties;
  import com.alibaba.nacos.client.naming.cache.NamingFuzzyWatchServiceListHolder;
  import com.alibaba.nacos.client.naming.cache.ServiceInfoHolder;
  import com.alibaba.nacos.client.naming.event.InstancesChangeNotifier;
  import com.alibaba.nacos.client.naming.remote.gprc.NamingGrpcClientProxy;
  import com.alibaba.nacos.client.naming.remote.http.NamingHttpClientProxy;
  import org.junit.jupiter.api.AfterEach;
  import org.junit.jupiter.api.Assertions;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.extension.ExtendWith;
  import org.mockito.Mock;
  import org.mockito.Mockito;
  import org.mockito.junit.jupiter.MockitoExtension;
  
  import java.lang.reflect.Field;
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Properties;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertNull;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  import static org.mockito.Mockito.reset;
  import static org.mockito.Mockito.times;
  import static org.mockito.Mockito.verify;
  import static org.mockito.Mockito.when;
  
  @ExtendWith(MockitoExtension.class)
  class NamingClientProxyDelegateTest {
      
      private static final String TEST_NAMESPACE = "ns1";
      
      @Mock
      ServiceInfoHolder holder;
      
      @Mock
      NamingGrpcClientProxy mockGrpcClient;
      
      @Mock
      NamingFuzzyWatchServiceListHolder namingFuzzyWatchServiceListHolder;
      
      NamingClientProxyDelegate delegate;
      
      InstancesChangeNotifier notifier;
      
      NacosClientProperties nacosClientProperties;
      
      @BeforeEach
      void setUp() throws NacosException, NoSuchFieldException, IllegalAccessException {
          Properties props = new Properties();
          props.setProperty("serverAddr", "localhost");
          nacosClientProperties = NacosClientProperties.PROTOTYPE.derive(props);
          notifier = new InstancesChangeNotifier();
          delegate = new NamingClientProxyDelegate(TEST_NAMESPACE, holder, nacosClientProperties, notifier,
                  namingFuzzyWatchServiceListHolder);
          Field grpcClientProxyField = NamingClientProxyDelegate.class.getDeclaredField("grpcClientProxy");
          grpcClientProxyField.setAccessible(true);
          grpcClientProxyField.set(delegate, mockGrpcClient);
      }
      
      @AfterEach
      void tearDown() throws NacosException {
          delegate.shutdown();
      }
      
      @Test
      void testRegisterEphemeralServiceByGrpc() throws NacosException {
          String serviceName = "service1";
          String groupName = "group1";
          Instance instance = new Instance();
          instance.setServiceName(serviceName);
          instance.setClusterName(groupName);
          instance.setIp("1.1.1.1");
          instance.setPort(1);
          instance.setEphemeral(true);
          delegate.registerService(serviceName, groupName, instance);
          verify(mockGrpcClient, times(1)).registerService(serviceName, groupName, instance);
      }
      
      @Test
      void testBatchRegisterServiceByGrpc() throws NacosException {
          String serviceName = "service1";
          String groupName = "group1";
          Instance instance = new Instance();
          instance.setServiceName(serviceName);
          instance.setClusterName(groupName);
          instance.setIp("1.1.1.1");
          instance.setPort(1);
          instance.setEphemeral(true);
          List<Instance> instanceList = new ArrayList<>();
          delegate.batchRegisterService(serviceName, groupName, instanceList);
          verify(mockGrpcClient, times(1)).batchRegisterService(serviceName, groupName, instanceList);
      }
      
      @Test
      void testBatchDeregisterServiceByGrpc() throws NacosException {
          String serviceName = "service1";
          String groupName = "group1";
          List<Instance> instanceList = new ArrayList<>();
          delegate.batchDeregisterService(serviceName, groupName, instanceList);
          verify(mockGrpcClient, times(1)).batchDeregisterService(serviceName, groupName, instanceList);
          reset(mockGrpcClient);
          instanceList.add(new Instance());
          delegate.batchDeregisterService(serviceName, groupName, instanceList);
          verify(mockGrpcClient, times(1)).batchDeregisterService(serviceName, groupName, instanceList);
      }
      
      @Test
      void testRegisterPersistentServiceByGrpc() throws NacosException {
          String serviceName = "service1";
          String groupName = "group1";
          Instance instance = new Instance();
          instance.setServiceName(serviceName);
          instance.setClusterName(groupName);
          instance.setIp("1.1.1.1");
          instance.setPort(1);
          // persistent instance
          instance.setEphemeral(false);
          // when server support register persistent instance by grpc, will use grpc to register
          when(mockGrpcClient.isAbilitySupportedByServer(
                  AbilityKey.SERVER_PERSISTENT_INSTANCE_BY_GRPC)).thenReturn(true);
          delegate.registerService(serviceName, groupName, instance);
          verify(mockGrpcClient, times(1)).registerService(serviceName, groupName, instance);
      }
      
      @Test
      void testRegisterPersistentServiceByHttp() throws NacosException, NoSuchFieldException, IllegalAccessException {
          NamingHttpClientProxy mockHttpClient = Mockito.mock(NamingHttpClientProxy.class);
          Field mockHttpClientField = NamingClientProxyDelegate.class.getDeclaredField("httpClientProxy");
          mockHttpClientField.setAccessible(true);
          mockHttpClientField.set(delegate, mockHttpClient);
          
          String serviceName = "service1";
          String groupName = "group1";
          Instance instance = new Instance();
          instance.setServiceName(serviceName);
          instance.setClusterName(groupName);
          instance.setIp("1.1.1.1");
          instance.setPort(1);
          // persistent instance
          instance.setEphemeral(false);
          // when server do not support register persistent instance by grpc, will use http to register
          delegate.registerService(serviceName, groupName, instance);
          verify(mockHttpClient, times(1)).registerService(serviceName, groupName, instance);
      }
      
      @Test
      void testDeregisterEphemeralServiceGrpc() throws NacosException {
          String serviceName = "service1";
          String groupName = "group1";
          Instance instance = new Instance();
          instance.setServiceName(serviceName);
          instance.setClusterName(groupName);
          instance.setIp("1.1.1.1");
          instance.setPort(1);
          // use grpc
          instance.setEphemeral(true);
          delegate.deregisterService(serviceName, groupName, instance);
          verify(mockGrpcClient, times(1)).deregisterService(serviceName, groupName, instance);
      }
      
      @Test
      void testDeregisterPersistentServiceGrpc() throws NacosException {
          String serviceName = "service1";
          String groupName = "group1";
          Instance instance = new Instance();
          instance.setServiceName(serviceName);
          instance.setClusterName(groupName);
          instance.setIp("1.1.1.1");
          instance.setPort(1);
          // persistent instance
          instance.setEphemeral(false);
          // when server support deregister persistent instance by grpc, will use grpc to deregister
          when(mockGrpcClient.isAbilitySupportedByServer(
                  AbilityKey.SERVER_PERSISTENT_INSTANCE_BY_GRPC)).thenReturn(true);
          delegate.deregisterService(serviceName, groupName, instance);
          verify(mockGrpcClient, times(1)).deregisterService(serviceName, groupName, instance);
      }
      
      @Test
      void testDeregisterPersistentServiceHttp() throws NacosException, NoSuchFieldException, IllegalAccessException {
          NamingHttpClientProxy mockHttpClient = Mockito.mock(NamingHttpClientProxy.class);
          Field mockHttpClientField = NamingClientProxyDelegate.class.getDeclaredField("httpClientProxy");
          mockHttpClientField.setAccessible(true);
          mockHttpClientField.set(delegate, mockHttpClient);
          
          String serviceName = "service1";
          String groupName = "group1";
          Instance instance = new Instance();
          instance.setServiceName(serviceName);
          instance.setClusterName(groupName);
          instance.setIp("1.1.1.1");
          instance.setPort(1);
          // use http
          instance.setEphemeral(false);
          delegate.deregisterService(serviceName, groupName, instance);
          verify(mockHttpClient, times(1)).deregisterService(serviceName, groupName, instance);
      }
      
      @Test
      void testUpdateInstance() {
          String serviceName = "service1";
          String groupName = "group1";
          Instance instance = new Instance();
          Assertions.assertDoesNotThrow(() -> {
              delegate.updateInstance(serviceName, groupName, instance);
          });
      }
      
      @Test
      void testQueryInstancesOfService() throws NacosException {
          String serviceName = "service1";
          String groupName = "group1";
          String clusters = "cluster1";
          delegate.queryInstancesOfService(serviceName, groupName, clusters, false);
          verify(mockGrpcClient, times(1)).queryInstancesOfService(serviceName, groupName, clusters, false);
      }
      
      @Test
      void testQueryService() throws NacosException {
          Service service = delegate.queryService("a", "b");
          assertNull(service);
      }
      
      @Test
      void testCreateService() {
          Service service = new Service();
          Assertions.assertDoesNotThrow(() -> {
              delegate.createService(service, new NoneSelector());
          });
      }
      
      @Test
      void testDeleteService() throws NacosException {
          assertFalse(delegate.deleteService("service", "group1"));
      }
      
      @Test
      void testUpdateService() {
          Service service = new Service();
          Assertions.assertDoesNotThrow(() -> {
              delegate.updateService(service, new ExpressionSelector());
          });
      }
      
      @Test
      void testGetServiceList() throws NacosException {
          AbstractSelector selector = new ExpressionSelector();
          int pageNo = 1;
          int pageSize = 10;
          String groupName = "group2";
          delegate.getServiceList(pageNo, pageSize, groupName, selector);
          verify(mockGrpcClient, times(1)).getServiceList(pageNo, pageSize, groupName, selector);
          
      }
      
      @Test
      void testSubscribe() throws NacosException {
          String serviceName = "service1";
          String groupName = "group1";
          String clusters = "cluster1";
          ServiceInfo info = new ServiceInfo();
          info.setName(serviceName);
          info.setGroupName(groupName);
          info.setClusters(clusters);
          when(mockGrpcClient.subscribe(serviceName, groupName, clusters)).thenReturn(info);
          
          ServiceInfo actual = delegate.subscribe(serviceName, groupName, clusters);
          assertEquals(info, actual);
          verify(mockGrpcClient, times(1)).subscribe(serviceName, groupName, clusters);
          verify(holder, times(1)).processServiceInfo(info);
          
      }
      
      @Test
      void testUnsubscribe() throws NacosException {
          String serviceName = "service1";
          String groupName = "group1";
          String clusters = "cluster1";
          delegate.unsubscribe(serviceName, groupName, clusters);
          verify(mockGrpcClient, times(1)).unsubscribe(serviceName, groupName, clusters);
      }
      
      @Test
      void testServerHealthy() {
          Mockito.when(mockGrpcClient.serverHealthy()).thenReturn(true);
          assertTrue(delegate.serverHealthy());
      }
      
      @Test
      void testIsSubscribed() throws NacosException {
          String serviceName = "service1";
          String groupName = "group1";
          String clusters = "cluster1";
          assertFalse(delegate.isSubscribed(serviceName, groupName, clusters));
          when(mockGrpcClient.isSubscribed(serviceName, groupName, clusters)).thenReturn(true);
          assertTrue(delegate.isSubscribed(serviceName, groupName, clusters));
      }
      
      @Test
      void testShutdown() throws NacosException {
          delegate.shutdown();
          verify(mockGrpcClient, times(1)).shutdown();
      }
  }
  