/*
    * 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.commons.configuration2.tree;
  
  import static org.junit.jupiter.api.Assertions.assertSame;
  import static org.mockito.Mockito.mock;
  import static org.mockito.Mockito.verify;
  import static org.mockito.Mockito.verifyNoMoreInteractions;
  import static org.mockito.Mockito.when;
  
  import org.junit.jupiter.api.BeforeAll;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  /**
   * Test class for {@code TrackedNodeHandler}.
   */
  public class TestTrackedNodeHandler {
      /** A test root node. */
      private static ImmutableNode root;
  
      @BeforeAll
      public static void setUpBeforeClass() throws Exception {
          root = new ImmutableNode.Builder().name("ROOT").create();
      }
  
      /** A mock node handler. */
      private NodeHandler<ImmutableNode> parentHandler;
  
      /** The handler to be tested. */
      private TrackedNodeHandler handler;
  
      @BeforeEach
      @SuppressWarnings("unchecked")
      public void setUp() throws Exception {
          parentHandler = mock(NodeHandler.class);
          handler = new TrackedNodeHandler(root, parentHandler);
      }
  
      /**
       * Tests whether a parent node can be queried.
       */
      @Test
      public void testGetParent() {
          final ImmutableNode node = new ImmutableNode.Builder().name("node").create();
          final ImmutableNode parent = new ImmutableNode.Builder().name("parent").create();
  
          when(parentHandler.getParent(node)).thenReturn(parent);
  
          assertSame(parent, handler.getParent(node));
  
          verify(parentHandler).getParent(node);
          verifyNoMoreInteractions(parentHandler);
      }
  
      /**
       * Tests whether the correct root node is returned.
       */
      @Test
      public void testGetRootNode() {
          assertSame(root, handler.getRootNode());
      }
  }