1/*
2 * Copyright (C) 2012 The Guava Authors
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.google.common.collect;
18
19import static com.google.common.truth.Truth.assertThat;
20
21import com.google.common.annotations.GwtCompatible;
22import com.google.common.annotations.GwtIncompatible;
23import com.google.common.collect.testing.AnEnum;
24import com.google.common.collect.testing.Helpers;
25import com.google.common.collect.testing.MapTestSuiteBuilder;
26import com.google.common.collect.testing.TestEnumMapGenerator;
27import com.google.common.collect.testing.features.CollectionFeature;
28import com.google.common.collect.testing.features.CollectionSize;
29
30import junit.framework.Test;
31import junit.framework.TestCase;
32import junit.framework.TestSuite;
33
34import java.util.Map;
35import java.util.Map.Entry;
36
37/**
38 * Tests for {@code ImmutableEnumMap}.
39 *
40 * @author Louis Wasserman
41 */
42@GwtCompatible(emulated = true)
43public class ImmutableEnumMapTest extends TestCase {
44  public static class ImmutableEnumMapGenerator extends TestEnumMapGenerator {
45    @Override
46    protected Map<AnEnum, String> create(Entry<AnEnum, String>[] entries) {
47      Map<AnEnum, String> map = Maps.newHashMap();
48      for (Entry<AnEnum, String> entry : entries) {
49        map.put(entry.getKey(), entry.getValue());
50      }
51      return Maps.immutableEnumMap(map);
52    }
53  }
54
55  @GwtIncompatible("suite")
56  public static Test suite() {
57    TestSuite suite = new TestSuite();
58    suite.addTest(MapTestSuiteBuilder.using(new ImmutableEnumMapGenerator())
59      .named("Maps.immutableEnumMap")
60      .withFeatures(CollectionSize.ANY,
61          CollectionFeature.SERIALIZABLE,
62          CollectionFeature.ALLOWS_NULL_QUERIES)
63      .createTestSuite());
64    suite.addTestSuite(ImmutableEnumMapTest.class);
65    return suite;
66  }
67
68  public void testEmptyImmutableEnumMap() {
69    ImmutableMap<AnEnum, String> map = Maps.immutableEnumMap(ImmutableMap.<AnEnum, String>of());
70    assertEquals(ImmutableMap.of(), map);
71  }
72
73  public void testImmutableEnumMapOrdering() {
74    ImmutableMap<AnEnum, String> map = Maps.immutableEnumMap(
75        ImmutableMap.of(AnEnum.C, "c", AnEnum.A, "a", AnEnum.E, "e"));
76
77    assertThat(map.entrySet()).has().exactly(
78        Helpers.mapEntry(AnEnum.A, "a"),
79        Helpers.mapEntry(AnEnum.C, "c"),
80        Helpers.mapEntry(AnEnum.E, "e")).inOrder();
81  }
82}
83