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.metadata.placement;
  
  import org.apache.kafka.common.DirectoryId;
  import org.apache.kafka.common.Uuid;
  
  import org.junit.jupiter.api.Test;
  
  import java.util.List;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNotEquals;
  
  public class PartitionAssignmentTest {
      public static PartitionAssignment partitionAssignment(List<Integer> replicas) {
          return new PartitionAssignment(replicas, __ -> DirectoryId.MIGRATING);
      }
  
      @Test
      public void testPartitionAssignmentReplicas() {
          List<Integer> replicas = List.of(0, 1, 2);
          assertEquals(replicas, partitionAssignment(replicas).replicas());
      }
  
      @Test
      public void testConsistentEqualsAndHashCode() {
          List<PartitionAssignment> partitionAssignments = List.of(
              partitionAssignment(
                  List.of(0, 1, 2)
              ),
              partitionAssignment(
                  List.of(1, 2, 0)
              )
          );
  
          for (int i = 0; i < partitionAssignments.size(); i++) {
              for (int j = 0; j < partitionAssignments.size(); j++) {
                  if (i == j) {
                      assertEquals(partitionAssignments.get(i), partitionAssignments.get(j));
                      assertEquals(partitionAssignments.get(i), partitionAssignment(partitionAssignments.get(i).replicas()));
                      assertEquals(partitionAssignments.get(i).hashCode(), partitionAssignments.get(j).hashCode());
                  } else {
                      assertNotEquals(partitionAssignments.get(i), partitionAssignments.get(j));
                      assertNotEquals(partitionAssignments.get(i).hashCode(), partitionAssignments.get(j).hashCode());
                  }
              }
          }
      }
  
      @Test
      public void testToString() {
          List<Integer> replicas = List.of(0, 1, 2);
          List<Uuid> directories = List.of(
                  Uuid.fromString("65WMNfybQpCDVulYOxMCTw"),
                  Uuid.fromString("VkZ5AkuESPGkMc2OxpKUjw"),
                  Uuid.fromString("wFtTi4FxTlOhhHytfxv7fQ")
          );
          PartitionAssignment partitionAssignment = new PartitionAssignment(replicas, directories::get);
          assertEquals("PartitionAssignment(replicas=[0, 1, 2], " +
                  "directories=[65WMNfybQpCDVulYOxMCTw, VkZ5AkuESPGkMc2OxpKUjw, wFtTi4FxTlOhhHytfxv7fQ])", partitionAssignment.toString());
      }
  }
  