| /* |
| * Copyright (C) 2013 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.testing.google; |
| |
| import static com.google.common.collect.testing.features.CollectionSize.ZERO; |
| import static com.google.common.collect.testing.features.MapFeature.SUPPORTS_REMOVE; |
| import static com.google.common.truth.Truth.assertThat; |
| |
| import com.google.common.annotations.GwtCompatible; |
| import com.google.common.collect.Multimap; |
| import com.google.common.collect.testing.features.CollectionSize; |
| import com.google.common.collect.testing.features.MapFeature; |
| |
| import java.util.Collection; |
| import java.util.Map; |
| import java.util.Map.Entry; |
| |
| /** |
| * Tests for {@link Multimap#clear()}. |
| * |
| * @author Louis Wasserman |
| */ |
| @GwtCompatible |
| public class MultimapClearTester<K, V> extends AbstractMultimapTester<K, V, Multimap<K, V>> { |
| @CollectionSize.Require(absent = ZERO) |
| @MapFeature.Require(absent = SUPPORTS_REMOVE) |
| public void testClearUnsupported() { |
| try { |
| multimap().clear(); |
| fail("Expected UnsupportedOperationException"); |
| } catch (UnsupportedOperationException expected) {} |
| } |
| |
| private void assertCleared() { |
| assertEquals(0, multimap().size()); |
| assertTrue(multimap().isEmpty()); |
| assertEquals(multimap(), getSubjectGenerator().create()); |
| assertThat(multimap().entries()).isEmpty(); |
| assertThat(multimap().asMap()).isEmpty(); |
| assertThat(multimap().keySet()).isEmpty(); |
| assertThat(multimap().keys()).isEmpty(); |
| assertThat(multimap().values()).isEmpty(); |
| for (K key : sampleKeys()) { |
| assertGet(key); |
| } |
| } |
| |
| @MapFeature.Require(SUPPORTS_REMOVE) |
| public void testClear() { |
| multimap().clear(); |
| assertCleared(); |
| } |
| |
| @MapFeature.Require(SUPPORTS_REMOVE) |
| public void testClearThroughEntries() { |
| multimap().entries().clear(); |
| assertCleared(); |
| } |
| |
| @MapFeature.Require(SUPPORTS_REMOVE) |
| public void testClearThroughAsMap() { |
| multimap().asMap().clear(); |
| assertCleared(); |
| } |
| |
| @MapFeature.Require(SUPPORTS_REMOVE) |
| public void testClearThroughKeySet() { |
| multimap().keySet().clear(); |
| assertCleared(); |
| } |
| |
| @MapFeature.Require(SUPPORTS_REMOVE) |
| public void testClearThroughKeys() { |
| multimap().keys().clear(); |
| assertCleared(); |
| } |
| |
| @MapFeature.Require(SUPPORTS_REMOVE) |
| public void testClearThroughValues() { |
| multimap().values().clear(); |
| assertCleared(); |
| } |
| |
| @MapFeature.Require(SUPPORTS_REMOVE) |
| @CollectionSize.Require(absent = ZERO) |
| public void testClearPropagatesToGet() { |
| for (K key : sampleKeys()) { |
| resetContainer(); |
| Collection<V> collection = multimap().get(key); |
| multimap().clear(); |
| assertThat(collection).isEmpty(); |
| } |
| } |
| |
| @MapFeature.Require(SUPPORTS_REMOVE) |
| @CollectionSize.Require(absent = ZERO) |
| public void testClearPropagatesToAsMapGet() { |
| for (K key : sampleKeys()) { |
| resetContainer(); |
| Collection<V> collection = multimap().asMap().get(key); |
| if (collection != null) { |
| multimap().clear(); |
| assertThat(collection).isEmpty(); |
| } |
| } |
| } |
| |
| @MapFeature.Require(SUPPORTS_REMOVE) |
| public void testClearPropagatesToAsMap() { |
| Map<K, Collection<V>> asMap = multimap().asMap(); |
| multimap().clear(); |
| assertThat(asMap).isEmpty(); |
| } |
| |
| @MapFeature.Require(SUPPORTS_REMOVE) |
| public void testClearPropagatesToEntries() { |
| Collection<Entry<K, V>> entries = multimap().entries(); |
| multimap().clear(); |
| assertThat(entries).isEmpty(); |
| } |
| } |