content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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 org.apache.cassandra.net;
  
  import java.util.concurrent.ExecutionException;
  
  import org.junit.Before;
  import org.junit.BeforeClass;
  import org.junit.Test;
  
  import org.apache.cassandra.ServerTestUtils;
  import org.apache.cassandra.Util;
  import org.apache.cassandra.exceptions.ConfigurationException;
  import org.apache.cassandra.service.StorageService;
  import org.apache.cassandra.utils.FBUtilities;
  
  import static org.apache.cassandra.net.Verb.ECHO_REQ;
  import static org.apache.cassandra.net.MockMessagingService.all;
  import static org.apache.cassandra.net.MockMessagingService.to;
  import static org.apache.cassandra.net.MockMessagingService.verb;
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertSame;
  
  public class MockMessagingServiceTest
  {
      @BeforeClass
      public static void initCluster() throws ConfigurationException
      {
          ServerTestUtils.prepareServerNoRegister();
          StorageService.instance.initServer();
      }
  
      @Before
      public void cleanup()
      {
          MockMessagingService.cleanup();
      }
  
      @Test
      public void testRequestResponse() throws InterruptedException, ExecutionException
      {
          // echo message that we like to mock as incoming response for outgoing echo message
          Message<NoPayload> echoMessage = Message.out(ECHO_REQ, NoPayload.noPayload);
          MockMessagingSpy spy = MockMessagingService
                  .when(
                          all(
                                  to(FBUtilities.getBroadcastAddressAndPort()),
                                  verb(ECHO_REQ)
                          )
                  )
                  .respond(echoMessage);
  
          Message<NoPayload> echoMessageOut = Message.out(ECHO_REQ, NoPayload.noPayload);
          MessagingService.instance().sendWithCallback(echoMessageOut, FBUtilities.getBroadcastAddressAndPort(), msg ->
          {
              assertEquals(ECHO_REQ, msg.verb());
              assertEquals(echoMessage.payload, msg.payload);
          });
  
          // we must have intercepted the outgoing message at this point
          Message<?> msg = spy.captureMessageOut().get();
          assertEquals(1, spy.messagesIntercepted());
          assertSame(echoMessage.payload, msg.payload);
  
          // and return a mocked response
          Util.spinAssertEquals(1, spy::mockedMessageResponses, 60);
      }
  }
  