/*
    * 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.collections4.map;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNull;
  import static org.junit.jupiter.api.Assertions.assertSame;
  
  import java.util.HashMap;
  import java.util.Map;
  
  import org.apache.commons.collections4.Factory;
  import org.apache.commons.collections4.FactoryUtils;
  import org.apache.commons.collections4.Transformer;
  import org.junit.jupiter.api.Test;
  
  /**
   * Extension of {@link AbstractMapTest} for exercising the
   * {@link LazyMap} implementation.
   *
   * @param <K> the key type.
   * @param <V> the value type.
   */
  @SuppressWarnings("boxing")
  public class LazyMapTest<K, V> extends AbstractIterableMapTest<K, V> {
  
      private static final Factory<Integer> oneFactory = FactoryUtils.constantFactory(1);
  
      @Override
      public String getCompatibilityVersion() {
          return "4";
      }
  
      @Override
      protected boolean isLazyMapTest() {
          return true;
      }
  
      @Override
      public LazyMap<K, V> makeObject() {
          return LazyMap.lazyMap(new HashMap<>(), FactoryUtils.<V>nullFactory());
      }
  
      @Test
      @Override
      public void testMapGet() {
          //TODO eliminate need for this via superclass - see svn history.
      }
  
      @Test
      public void testMapGetWithFactory() {
          Map<Integer, Number> map = LazyMap.lazyMap(new HashMap<>(), oneFactory);
          assertEquals(0, map.size());
          final Number i1 = map.get("Five");
          assertEquals(1, i1);
          assertEquals(1, map.size());
          final Number i2 = map.get(new String(new char[] {'F', 'i', 'v', 'e'}));
          assertEquals(1, i2);
          assertEquals(1, map.size());
          assertSame(i1, i2);
  
          map = LazyMap.lazyMap(new HashMap<>(), FactoryUtils.<Long>nullFactory());
          final Object o = map.get("Five");
          assertNull(o);
          assertEquals(1, map.size());
      }
  
      @Test
      public void testMapGetWithTransformer() {
          final Transformer<Number, Integer> intConverter = Number::intValue;
          final Map<Long, Number> map = LazyMap.lazyMap(new HashMap<>(), intConverter);
          assertEquals(0, map.size());
          final Number i1 = map.get(123L);
          assertEquals(123, i1);
          assertEquals(1, map.size());
      }
  
  //    public void testCreate() throws Exception {
  //        resetEmpty();
  //        writeExternalFormToDisk(
  //            (java.io.Serializable) map,
  //            "src/test/resources/data/test/LazyMap.emptyCollection.version4.obj");
  //        resetFull();
  //        writeExternalFormToDisk(
  //            (java.io.Serializable) map,
 //            "src/test/resources/data/test/LazyMap.fullCollection.version4.obj");
 //    }
 
 }