/*
    * 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
    *
    *     https://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.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  
  import org.apache.commons.configuration2.BaseHierarchicalConfiguration;
  import org.apache.commons.configuration2.ex.ConfigurationException;
  import org.junit.jupiter.api.Test;
  
  /**
   * Test class for UnionCombiner.
   */
  public class TestUnionCombiner extends AbstractCombinerTest {
  
      /**
       * Creates the combiner.
       *
       * @return the combiner
       */
      @Override
      protected NodeCombiner createCombiner() {
          return new UnionCombiner();
      }
  
      /**
       * Tests combination of attributes.
       */
      @Test
      void testAttributes() throws ConfigurationException {
          final BaseHierarchicalConfiguration config = createCombinedConfiguration();
          assertEquals(0, config.getMaxIndex("database.tables.table(0)[@id]"));
          assertEquals(1, config.getInt("database.tables.table(0)[@id](0)"));
      }
  
      /**
       * Tests combination of lists.
       */
      @Test
      void testLists() throws ConfigurationException {
          final BaseHierarchicalConfiguration config = createCombinedConfiguration();
          assertEquals(2, config.getMaxIndex("net.service.url"));
          assertEquals("http://service1.org", config.getString("net.service.url(0)"));
          assertEquals("http://service2.org", config.getString("net.service.url(1)"));
          assertEquals(2, config.getInt("net.service.url(2)[@type]"));
          assertEquals(3, config.getMaxIndex("net.server.url"));
      }
  
      /**
       * Tests combination of simple values (no lists).
       */
      @Test
      void testSimpleValues() throws ConfigurationException {
          final BaseHierarchicalConfiguration config = createCombinedConfiguration();
          assertEquals(1, config.getMaxIndex("gui.bgcolor"));
          assertEquals("green", config.getString("gui.bgcolor(0)"));
          assertEquals("black", config.getString("gui.bgcolor(1)"));
          assertEquals(0, config.getMaxIndex("gui.selcolor"));
          assertEquals("yellow", config.getString("gui.selcolor"));
      }
  
      /**
       * Tests combinations of elements with attributes.
       */
      @Test
      void testSimpleValuesWithAttributes() throws ConfigurationException {
          final BaseHierarchicalConfiguration config = createCombinedConfiguration();
          assertEquals(1, config.getMaxIndex("gui.level"));
          assertEquals(1, config.getInt("gui.level(0)"));
          assertEquals(4, config.getInt("gui.level(1)"));
          assertEquals(2, config.getInt("gui.level(0)[@default]"));
          assertFalse(config.containsKey("gui.level(0)[@min]"));
          assertEquals(1, config.getInt("gui.level(1)[@min]"));
      }
  
      /**
       * Tests combining a list of tables. Per default the table elements will be combined. But if they are defined as list
       * elements, the resulting tree should contain two table nodes.
       */
      @Test
      void testTableList() throws ConfigurationException {
          combiner.addListNode("table");
          final BaseHierarchicalConfiguration config = createCombinedConfiguration();
          assertEquals("documents", config.getString("database.tables.table(0).name"));
         assertEquals(1, config.getInt("database.tables.table(0)[@id]"));
         assertEquals("tasks", config.getString("database.tables.table(1).name"));
         assertEquals(2, config.getInt("database.tables.table(1)[@id]"));
     }
 }