content: /*
   *  Copyright 1999-2021 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.naming.remote.udp;
  
  import com.alibaba.nacos.api.exception.NacosException;
  import com.alibaba.nacos.api.remote.PushCallBack;
  import com.alibaba.nacos.sys.env.EnvUtil;
  import org.junit.jupiter.api.AfterEach;
  import org.junit.jupiter.api.BeforeAll;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Disabled;
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.extension.ExtendWith;
  import org.mockito.InjectMocks;
  import org.mockito.Mock;
  import org.mockito.Mockito;
  import org.mockito.junit.jupiter.MockitoExtension;
  import org.springframework.mock.env.MockEnvironment;
  import org.springframework.test.util.ReflectionTestUtils;
  
  import java.io.IOException;
  import java.net.DatagramPacket;
  import java.net.DatagramSocket;
  import java.util.concurrent.ConcurrentMap;
  import java.util.concurrent.TimeUnit;
  
  import static org.junit.jupiter.api.Assertions.assertTrue;
  import static org.junit.jupiter.api.Assertions.fail;
  import static org.mockito.ArgumentMatchers.any;
  import static org.mockito.Mockito.doAnswer;
  import static org.mockito.Mockito.when;
  
  /**
   * {@link UdpConnector} unit tests.
   *
   * @author chenglu
   * @date 2021-09-15 19:52
   */
  @ExtendWith(MockitoExtension.class)
  @Disabled("The Udp push Unit test is not stable by async runnable, and Udp push has been mark deprecated. "
          + "So Disabled this Unit test first and will remove it.")
  class UdpConnectorTest {
      
      @InjectMocks
      private UdpConnector udpConnector;
      
      @Mock
      private ConcurrentMap<String, AckEntry> ackMap;
      
      @Mock
      private ConcurrentMap<String, PushCallBack> callbackMap;
      
      @Mock
      private DatagramSocket udpSocket;
      
      @BeforeAll
      static void setEnv() {
          EnvUtil.setEnvironment(new MockEnvironment());
      }
      
      @BeforeEach
      void setUp() throws IOException, InterruptedException {
          ReflectionTestUtils.setField(udpConnector, "ackMap", ackMap);
          ReflectionTestUtils.setField(udpConnector, "callbackMap", callbackMap);
          DatagramSocket oldSocket = (DatagramSocket) ReflectionTestUtils.getField(udpConnector, "udpSocket");
          ReflectionTestUtils.setField(udpConnector, "udpSocket", udpSocket);
          doAnswer(invocationOnMock -> {
              TimeUnit.SECONDS.sleep(3);
              return null;
          }).when(udpSocket).receive(any(DatagramPacket.class));
          oldSocket.close();
          TimeUnit.SECONDS.sleep(1);
      }
      
      @AfterEach
      void tearDown() throws InterruptedException {
          udpConnector.shutdown();
          TimeUnit.SECONDS.sleep(1);
      }
      
      @Test
      void testContainAck() {
          when(ackMap.containsKey("1111")).thenReturn(true);
          assertTrue(udpConnector.containAck("1111"));
      }
      
      @Test
      void testSendData() throws NacosException, IOException {
          when(udpSocket.isClosed()).thenReturn(false);
          AckEntry ackEntry = new AckEntry("A", new DatagramPacket(new byte[2], 2));
          udpConnector.sendData(ackEntry);
          Mockito.verify(udpSocket).send(ackEntry.getOrigin());
      }
      
      @Test
      void testSendDataWithCallback() throws IOException, InterruptedException {
          when(udpSocket.isClosed()).thenReturn(false);
          AckEntry ackEntry = new AckEntry("A", new DatagramPacket(new byte[2], 2));
          udpConnector.sendDataWithCallback(ackEntry, new PushCallBack() {
              @Override
              public long getTimeout() {
                  return 0;
              }
              
              @Override
              public void onSuccess() {
              
              }
              
              @Override
              public void onFail(Throwable e) {
                  fail(e.getMessage());
              }
          });
          Thread.sleep(100);
          Mockito.verify(udpSocket).send(ackEntry.getOrigin());
      }
  }
  