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.kafka.clients.admin;
  
  import org.apache.kafka.common.TopicPartition;
  
  import org.junit.jupiter.api.Test;
  
  import java.util.Collections;
  import java.util.Optional;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNotEquals;
  
  public class MemberDescriptionTest {
  
      private static final String MEMBER_ID = "member_id";
      private static final Optional<String> INSTANCE_ID = Optional.of("instanceId");
      private static final String CLIENT_ID = "client_id";
      private static final String HOST = "host";
      private static final MemberAssignment ASSIGNMENT;
      private static final MemberDescription STATIC_MEMBER_DESCRIPTION;
  
      static {
          ASSIGNMENT = new MemberAssignment(Collections.singleton(new TopicPartition("topic", 1)));
          STATIC_MEMBER_DESCRIPTION = new MemberDescription(MEMBER_ID,
                                                            INSTANCE_ID,
                                                            CLIENT_ID,
                                                            HOST,
                                                            ASSIGNMENT,
                                                            Optional.empty(),
                                                            Optional.empty(),
                                                            Optional.empty());
      }
  
      @Test
      public void testEqualsWithoutGroupInstanceId() {
          MemberDescription dynamicMemberDescription = new MemberDescription(MEMBER_ID,
                                                                             Optional.empty(),
                                                                             CLIENT_ID,
                                                                             HOST,
                                                                             ASSIGNMENT,
                                                                             Optional.empty(),
                                                                             Optional.empty(),
                                                                             Optional.empty());
  
          MemberDescription identityDescription = new MemberDescription(MEMBER_ID,
                                                                        Optional.empty(),
                                                                        CLIENT_ID,
                                                                        HOST,
                                                                        ASSIGNMENT,
                                                                        Optional.empty(),
                                                                        Optional.empty(),
                                                                        Optional.empty());
  
          assertNotEquals(STATIC_MEMBER_DESCRIPTION, dynamicMemberDescription);
          assertNotEquals(STATIC_MEMBER_DESCRIPTION.hashCode(), dynamicMemberDescription.hashCode());
  
          // Check self equality.
          assertEquals(dynamicMemberDescription, dynamicMemberDescription);
          assertEquals(dynamicMemberDescription, identityDescription);
          assertEquals(dynamicMemberDescription.hashCode(), identityDescription.hashCode());
      }
  
      @Test
      public void testEqualsWithGroupInstanceId() {
          // Check self equality.
          assertEquals(STATIC_MEMBER_DESCRIPTION, STATIC_MEMBER_DESCRIPTION);
  
          MemberDescription identityDescription = new MemberDescription(MEMBER_ID,
                                                                        INSTANCE_ID,
                                                                        CLIENT_ID,
                                                                        HOST,
                                                                        ASSIGNMENT,
                                                                        Optional.empty(),
                                                                        Optional.empty(),
                                                                        Optional.empty());
  
          assertEquals(STATIC_MEMBER_DESCRIPTION, identityDescription);
          assertEquals(STATIC_MEMBER_DESCRIPTION.hashCode(), identityDescription.hashCode());
      }
  
      @Test
      public void testNonEqual() {
          MemberDescription newMemberDescription = new MemberDescription("new_member",
                                                                         INSTANCE_ID,
                                                                         CLIENT_ID,
                                                                         HOST,
                                                                         ASSIGNMENT,
                                                                         Optional.empty(),
                                                                         Optional.empty(),
                                                                         Optional.empty());
  
          assertNotEquals(STATIC_MEMBER_DESCRIPTION, newMemberDescription);
          assertNotEquals(STATIC_MEMBER_DESCRIPTION.hashCode(), newMemberDescription.hashCode());
  
          MemberDescription newInstanceDescription = new MemberDescription(MEMBER_ID,
                                                                           Optional.of("new_instance"),
                                                                           CLIENT_ID,
                                                                           HOST,
                                                                           ASSIGNMENT,
                                                                           Optional.empty(),
                                                                           Optional.empty(),
                                                                           Optional.empty());
  
          assertNotEquals(STATIC_MEMBER_DESCRIPTION, newInstanceDescription);
          assertNotEquals(STATIC_MEMBER_DESCRIPTION.hashCode(), newInstanceDescription.hashCode());
  
          MemberDescription newTargetAssignmentDescription = new MemberDescription(MEMBER_ID,
                                                                                   INSTANCE_ID,
                                                                                   CLIENT_ID,
                                                                                   HOST,
                                                                                   ASSIGNMENT,
                                                                                   Optional.of(ASSIGNMENT),
                                                                                   Optional.empty(),
                                                                                   Optional.empty());
          assertNotEquals(STATIC_MEMBER_DESCRIPTION, newTargetAssignmentDescription);
          assertNotEquals(STATIC_MEMBER_DESCRIPTION.hashCode(), newTargetAssignmentDescription.hashCode());
  
          MemberDescription newMemberEpochDescription = new MemberDescription(MEMBER_ID,
                                                                              INSTANCE_ID,
                                                                              CLIENT_ID,
                                                                              HOST,
                                                                              ASSIGNMENT,
                                                                              Optional.empty(),
                                                                              Optional.of(1),
                                                                              Optional.empty());
          assertNotEquals(STATIC_MEMBER_DESCRIPTION, newMemberEpochDescription);
          assertNotEquals(STATIC_MEMBER_DESCRIPTION.hashCode(), newMemberEpochDescription.hashCode());
  
          MemberDescription newIsClassicDescription = new MemberDescription(MEMBER_ID,
                                                                            INSTANCE_ID,
                                                                            CLIENT_ID,
                                                                            HOST,
                                                                            ASSIGNMENT,
                                                                            Optional.empty(),
                                                                            Optional.empty(),
                                                                            Optional.of(false));
          assertNotEquals(STATIC_MEMBER_DESCRIPTION, newIsClassicDescription);
          assertNotEquals(STATIC_MEMBER_DESCRIPTION.hashCode(), newIsClassicDescription.hashCode());
      }
  }
  