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.image.node;
  
  import org.apache.kafka.common.Uuid;
  import org.apache.kafka.image.ClusterImage;
  import org.apache.kafka.metadata.ControllerRegistration;
  import org.apache.kafka.metadata.VersionRange;
  import org.apache.kafka.server.common.MetadataVersion;
  
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.Timeout;
  
  import java.util.List;
  import java.util.Map;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  import static org.junit.jupiter.api.Assertions.assertNull;
  
  
  @Timeout(value = 40)
  public class ClusterImageControllersNodeTest {
      private static final ClusterImage TEST_IMAGE = new ClusterImage(
              Map.of(),
              Map.of(2, new ControllerRegistration.Builder().
                      setId(2).
                      setIncarnationId(Uuid.fromString("adGo6sTPS0uJshjvdTUmqQ")).
                      setZkMigrationReady(false).
                      setSupportedFeatures(Map.of(
                              MetadataVersion.FEATURE_NAME, VersionRange.of(1, 4))).
                      setListeners(Map.of()).
                          build()));
  
      private static final ClusterImageControllersNode NODE = new ClusterImageControllersNode(TEST_IMAGE);
  
      @Test
      public void testChildNames() {
          assertEquals(List.of("2"), NODE.childNames());
      }
  
      @Test
      public void testNode1Child() {
          MetadataNode child = NODE.child("2");
          assertNotNull(child);
          assertEquals("ControllerRegistration(id=2, " +
              "incarnationId=adGo6sTPS0uJshjvdTUmqQ, " +
              "zkMigrationReady=false, " +
              "listeners=[], " +
              "supportedFeatures={metadata.version: 1-4})",
              child.stringify());
      }
  
      @Test
      public void testUnknownChild() {
          assertNull(NODE.child("1"));
      }
  }
  