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 17 package com.google.common.collect; 18 19 import static com.google.common.truth.Truth.assertThat; 20 21 import com.google.common.annotations.GwtCompatible; 22 import com.google.common.collect.testing.AnEnum; 23 import com.google.common.collect.testing.Helpers; 24 import com.google.common.collect.testing.TestEnumMapGenerator; 25 26 import junit.framework.TestCase; 27 28 import java.util.Map; 29 import java.util.Map.Entry; 30 31 /** 32 * Tests for {@code ImmutableEnumMap}. 33 * 34 * @author Louis Wasserman 35 */ 36 @GwtCompatible(emulated = true) 37 public class ImmutableEnumMapTest extends TestCase { 38 public static class ImmutableEnumMapGenerator extends TestEnumMapGenerator { 39 @Override 40 protected Map<AnEnum, String> create(Entry<AnEnum, String>[] entries) { 41 Map<AnEnum, String> map = Maps.newHashMap(); 42 for (Entry<AnEnum, String> entry : entries) { 43 map.put(entry.getKey(), entry.getValue()); 44 } 45 return Maps.immutableEnumMap(map); 46 } 47 } 48 49 public void testEmptyImmutableEnumMap() { 50 ImmutableMap<AnEnum, String> map = Maps.immutableEnumMap(ImmutableMap.<AnEnum, String>of()); 51 assertEquals(ImmutableMap.of(), map); 52 } 53 54 public void testImmutableEnumMapOrdering() { 55 ImmutableMap<AnEnum, String> map = Maps.immutableEnumMap( 56 ImmutableMap.of(AnEnum.C, "c", AnEnum.A, "a", AnEnum.E, "e")); 57 58 assertThat(map.entrySet()).has().exactly( 59 Helpers.mapEntry(AnEnum.A, "a"), 60 Helpers.mapEntry(AnEnum.C, "c"), 61 Helpers.mapEntry(AnEnum.E, "e")).inOrder(); 62 } 63 } 64 65
