/*
    * 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.assertInstanceOf;
  import static org.junit.jupiter.api.Assertions.assertNull;
  import static org.junit.jupiter.api.Assertions.assertSame;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  
  import java.util.Comparator;
  import java.util.Map;
  import java.util.SortedMap;
  import java.util.TreeMap;
  import java.util.concurrent.ConcurrentSkipListMap;
  
  import org.apache.commons.collections4.Factory;
  import org.apache.commons.collections4.FactoryUtils;
  import org.apache.commons.collections4.Transformer;
  import org.apache.commons.collections4.TransformerUtils;
  import org.junit.jupiter.api.Test;
  
  /**
   * Extension of {@link LazyMapTest} for exercising the {@link LazySortedMap} implementation.
   *
   * @param <K> the key type.
   * @param <V> the value type.
   */
  @SuppressWarnings("boxing")
  public class LazySortedMapTest<K, V> extends AbstractSortedMapTest<K, V> {
  
      private static final class ReverseStringComparator implements Comparator<String> {
  
          @Override
          public int compare(final String arg0, final String arg1) {
              return arg1.compareTo(arg0);
          }
  
      }
  
      private static final Factory<Integer> oneFactory = FactoryUtils.constantFactory(1);
  
      protected final Comparator<String> reverseStringComparator = new ReverseStringComparator();
  
      @Override
      public String getCompatibilityVersion() {
          return "4";
      }
  
      @Override
      public boolean isAllowNullKey() {
          return false;
      }
  
      @Override
      protected boolean isLazyMapTest() {
          return true;
      }
  
      @Override
      public SortedMap<K, V> makeObject() {
          return LazySortedMap.lazySortedMap(new TreeMap<>(), FactoryUtils.<V>nullFactory());
      }
  
      @Override
      @Test
      public void testMapGet() {
          Map<Integer, Number> map = LazySortedMap.lazySortedMap(new TreeMap<>(), oneFactory);
          assertEquals(0, map.size());
          final Number i1 = map.get(5);
          assertEquals(1, i1);
          assertEquals(1, map.size());
  
          map = LazySortedMap.lazySortedMap(new TreeMap<>(), FactoryUtils.<Number>nullFactory());
          final Number o = map.get(5);
          assertNull(o);
          assertEquals(1, map.size());
  
      }
  
      @Test
      public void testReverseSortOrder() {
          final SortedMap<String, Number> map = LazySortedMap.lazySortedMap(new ConcurrentSkipListMap<>(reverseStringComparator), oneFactory);
          map.put("A", 5);
          map.get("B"); // Entry with value "One" created
         map.put("C", 8);
         assertEquals("A", map.lastKey(), "Last key should be A");
         assertEquals("C", map.firstKey(), "First key should be C");
         assertEquals("B", map.tailMap("B").firstKey(), "First key in tail map should be B");
         assertEquals("B", map.headMap("A").lastKey(), "Last key in head map should be B");
         assertEquals("B", map.subMap("C", "A").lastKey(), "Last key in submap should be B");
 
         final Comparator<?> c = map.comparator();
         assertSame(c, reverseStringComparator, "natural order, so comparator should be null");
     }
 
     @Test
     public void testSortOrder() {
         final SortedMap<String, Number> map = LazySortedMap.lazySortedMap(new TreeMap<>(), oneFactory);
         map.put("A", 5);
         map.get("B"); // Entry with value "One" created
         map.put("C", 8);
         assertEquals("A", map.firstKey(), "First key should be A");
         assertEquals("C", map.lastKey(), "Last key should be C");
         assertEquals("B", map.tailMap("B").firstKey(), "First key in tail map should be B");
         assertEquals("B", map.headMap("C").lastKey(), "Last key in head map should be B");
         assertEquals("B", map.subMap("A", "C").lastKey(), "Last key in submap should be B");
 
         final Comparator<?> c = map.comparator();
         assertNull(c, "natural order, so comparator should be null");
     }
 
     @Test
     public void testTransformerDecorate() {
         final Transformer<Object, Integer> transformer = TransformerUtils.asTransformer(oneFactory);
         final SortedMap<Integer, Number> map = LazySortedMap.lazySortedMap(new TreeMap<>(), transformer);
         assertInstanceOf(LazySortedMap.class, map);
         assertThrows(NullPointerException.class, () -> LazySortedMap.lazySortedMap(new TreeMap<>(), (Transformer<Integer, Number>) null),
                 "Expecting NullPointerException for null transformer");
         assertThrows(NullPointerException.class, () -> LazySortedMap.lazySortedMap((SortedMap<Integer, Number>) null, transformer),
                 "Expecting NullPointerException for null map");
     }
 
 //    public void testCreate() throws Exception {
 //        resetEmpty();
 //        writeExternalFormToDisk(
 //            (java.io.Serializable) map,
 //            "src/test/resources/data/test/LazySortedMap.emptyCollection.version4.obj");
 //        resetFull();
 //        writeExternalFormToDisk(
 //            (java.io.Serializable) map,
 //            "src/test/resources/data/test/LazySortedMap.fullCollection.version4.obj");
 //    }
 
 }