/*
    * 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.builder;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  import static org.mockito.Mockito.mock;
  
  import java.util.Map;
  
  import org.apache.commons.configuration2.ex.ConfigurationRuntimeException;
  import org.apache.commons.configuration2.tree.ExpressionEngine;
  import org.junit.jupiter.api.Test;
  
  /**
   * Test class for {@code CopyObjectDefaultHandler}.
   */
  public class TestCopyObjectDefaultHandler {
      /**
       * Tests whether a base type can be initialized with default values. Unknown properties should silently be ignored.
       */
      @Test
      public void testInitializeDefaultsBaseType() {
          final Long refresh = 50000L;
          final XMLBuilderParametersImpl paramsXml = new XMLBuilderParametersImpl();
          paramsXml.setValidating(true).setExpressionEngine(mock(ExpressionEngine.class)).setReloadingRefreshDelay(refresh);
          final CopyObjectDefaultHandler handler = new CopyObjectDefaultHandler(paramsXml);
          final FileBasedBuilderParametersImpl paramsFb = new FileBasedBuilderParametersImpl();
          handler.initializeDefaults(paramsFb);
          assertEquals(refresh, paramsFb.getReloadingRefreshDelay());
      }
  
      /**
       * Tests whether exceptions during copying are re-thrown as runtime exceptions.
       */
      @Test
      public void testInitializeDefaultsException() {
          final ExpressionEngine engine = mock(ExpressionEngine.class);
          final XMLBuilderParametersImpl source = new XMLBuilderParametersImpl();
          source.setExpressionEngine(engine);
          final XMLBuilderParametersImpl dest = new XMLBuilderParametersImpl() {
              @Override
              public HierarchicalBuilderParametersImpl setExpressionEngine(final ExpressionEngine engine) {
                  throw new ConfigurationRuntimeException("Test exception");
              }
          };
  
          final CopyObjectDefaultHandler handler = new CopyObjectDefaultHandler(source);
          assertThrows(ConfigurationRuntimeException.class, () -> handler.initializeDefaults(dest));
      }
  
      /**
       * Tests whether default values can be copied onto an object of the same type.
       */
      @Test
      public void testInitializeDefaultsSameType() {
          final Long refresh = 50000L;
          final FileBasedBuilderParametersImpl source = new FileBasedBuilderParametersImpl();
          source.setReloadingRefreshDelay(refresh).setThrowExceptionOnMissing(true);
          final CopyObjectDefaultHandler handler = new CopyObjectDefaultHandler(source);
          final FileBasedBuilderParametersImpl copy = new FileBasedBuilderParametersImpl();
          handler.initializeDefaults(copy);
          final Map<String, Object> map = copy.getParameters();
          assertEquals(Boolean.TRUE, map.get("throwExceptionOnMissing"));
          assertEquals(refresh, copy.getReloadingRefreshDelay());
      }
  
      /**
       * Tries to create an instance without a source object.
       */
      @Test
      public void testInitNull() {
          assertThrows(IllegalArgumentException.class, () -> new CopyObjectDefaultHandler(null));
      }
  }