001/*
002 * Copyright (C) 2012 The Guava Authors
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package com.google.common.collect.testing.google;
018
019import static com.google.common.collect.testing.features.CollectionSize.ZERO;
020import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_KEYS;
021import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_KEY_QUERIES;
022import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_VALUES;
023import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_VALUE_QUERIES;
024import static org.junit.Assert.assertThrows;
025
026import com.google.common.annotations.GwtCompatible;
027import com.google.common.collect.Multimap;
028import com.google.common.collect.testing.features.CollectionSize;
029import com.google.common.collect.testing.features.MapFeature;
030
031/**
032 * Tester for {@link Multimap#containsEntry}.
033 *
034 * @author Louis Wasserman
035 */
036@GwtCompatible
037public class MultimapContainsEntryTester<K, V>
038    extends AbstractMultimapTester<K, V, Multimap<K, V>> {
039  @CollectionSize.Require(absent = ZERO)
040  public void testContainsEntryYes() {
041    assertTrue(multimap().containsEntry(k0(), v0()));
042  }
043
044  public void testContainsEntryNo() {
045    assertFalse(multimap().containsEntry(k3(), v3()));
046  }
047
048  public void testContainsEntryAgreesWithGet() {
049    for (K k : sampleKeys()) {
050      for (V v : sampleValues()) {
051        assertEquals(multimap().get(k).contains(v), multimap().containsEntry(k, v));
052      }
053    }
054  }
055
056  @CollectionSize.Require(absent = ZERO)
057  @MapFeature.Require({ALLOWS_NULL_KEYS, ALLOWS_NULL_VALUES})
058  public void testContainsEntryNullYes() {
059    initMultimapWithNullKeyAndValue();
060    assertTrue(multimap().containsEntry(null, null));
061  }
062
063  @MapFeature.Require({ALLOWS_NULL_KEY_QUERIES, ALLOWS_NULL_VALUE_QUERIES})
064  public void testContainsEntryNullNo() {
065    assertFalse(multimap().containsEntry(null, null));
066  }
067
068  @MapFeature.Require(absent = ALLOWS_NULL_KEY_QUERIES)
069  public void testContainsEntryNullDisallowedBecauseKeyQueriesDisallowed() {
070    assertThrows(NullPointerException.class, () -> multimap().containsEntry(null, v3()));
071  }
072
073  @MapFeature.Require(absent = ALLOWS_NULL_VALUE_QUERIES)
074  public void testContainsEntryNullDisallowedBecauseValueQueriesDisallowed() {
075    assertThrows(NullPointerException.class, () -> multimap().containsEntry(k3(), null));
076  }
077}