/*
    * Copyright (C) 2012 The Guava Authors
    *
    * Licensed 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 com.google.common.collect;
  
  import static com.google.common.truth.Truth.assertThat;
  
  import com.google.common.annotations.GwtCompatible;
  import com.google.common.collect.testing.AnEnum;
  import com.google.common.collect.testing.Helpers;
  import com.google.common.collect.testing.TestEnumMapGenerator;
  
  import junit.framework.TestCase;
  
  import java.util.Map;
  import java.util.Map.Entry;
  
  /**
   * Tests for {@code ImmutableEnumMap}.
   *
   * @author Louis Wasserman
   */
  @GwtCompatible(emulated = true)
  public class ImmutableEnumMapTest extends TestCase {
    public static class ImmutableEnumMapGenerator extends TestEnumMapGenerator {
      @Override
      protected Map<AnEnum, String> create(Entry<AnEnum, String>[] entries) {
        Map<AnEnum, String> map = Maps.newHashMap();
        for (Entry<AnEnum, String> entry : entries) {
          map.put(entry.getKey(), entry.getValue());
        }
        return Maps.immutableEnumMap(map);
      }
    }
  
    public void testEmptyImmutableEnumMap() {
      ImmutableMap<AnEnum, String> map = Maps.immutableEnumMap(ImmutableMap.<AnEnum, String>of());
      assertEquals(ImmutableMap.of(), map);
    }
  
    public void testImmutableEnumMapOrdering() {
      ImmutableMap<AnEnum, String> map = Maps.immutableEnumMap(
          ImmutableMap.of(AnEnum.C, "c", AnEnum.A, "a", AnEnum.E, "e"));
  
      assertThat(map.entrySet()).has().exactly(
          Helpers.mapEntry(AnEnum.A, "a"),
          Helpers.mapEntry(AnEnum.C, "c"),
          Helpers.mapEntry(AnEnum.E, "e")).inOrder();
    }
  }