| /* |
| * 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.base.Preconditions.checkState; |
| import static com.google.common.collect.testing.features.CollectionFeature.ALLOWS_NULL_QUERIES; |
| import static com.google.common.collect.testing.features.CollectionFeature.SERIALIZABLE; |
| import static com.google.common.truth.Truth.assertThat; |
| |
| import com.google.common.annotations.GwtCompatible; |
| import com.google.common.annotations.GwtIncompatible; |
| import com.google.common.base.Function; |
| import com.google.common.collect.testing.AnEnum; |
| import com.google.common.collect.testing.Helpers; |
| import com.google.common.collect.testing.MapTestSuiteBuilder; |
| import com.google.common.collect.testing.TestEnumMapGenerator; |
| import com.google.common.collect.testing.features.CollectionSize; |
| import java.util.Map; |
| import java.util.Map.Entry; |
| import junit.framework.Test; |
| import junit.framework.TestCase; |
| import junit.framework.TestSuite; |
| |
| /** |
| * 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); |
| } |
| } |
| |
| @GwtIncompatible // suite |
| public static Test suite() { |
| TestSuite suite = new TestSuite(); |
| suite.addTest( |
| MapTestSuiteBuilder.using(new ImmutableEnumMapGenerator()) |
| .named("Maps.immutableEnumMap") |
| .withFeatures(CollectionSize.ANY, SERIALIZABLE, ALLOWS_NULL_QUERIES) |
| .createTestSuite()); |
| suite.addTestSuite(ImmutableEnumMapTest.class); |
| return suite; |
| } |
| |
| public void testIteratesOnce() { |
| Map<AnEnum, AnEnum> map = |
| Maps.asMap( |
| ImmutableSet.of(AnEnum.A), |
| new Function<AnEnum, AnEnum>() { |
| boolean used = false; |
| |
| @Override |
| public AnEnum apply(AnEnum ae) { |
| checkState(!used, "should not be applied more than once"); |
| used = true; |
| return ae; |
| } |
| }); |
| ImmutableMap<AnEnum, AnEnum> copy = Maps.immutableEnumMap(map); |
| assertThat(copy.entrySet()).containsExactly(Helpers.mapEntry(AnEnum.A, AnEnum.A)); |
| } |
| |
| 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()) |
| .containsExactly( |
| Helpers.mapEntry(AnEnum.A, "a"), |
| Helpers.mapEntry(AnEnum.C, "c"), |
| Helpers.mapEntry(AnEnum.E, "e")) |
| .inOrder(); |
| } |
| } |