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.google.ReflectionFreeAssertThrows.assertThrows;
023
024import com.google.common.annotations.GwtCompatible;
025import com.google.common.collect.Multimap;
026import com.google.common.collect.testing.features.CollectionSize;
027import com.google.common.collect.testing.features.MapFeature;
028import org.junit.Ignore;
029
030/**
031 * Tester for the {@code containsKey} methods of {@code Multimap} and its {@code asMap()} view.
032 *
033 * @author Louis Wasserman
034 */
035@GwtCompatible
036@Ignore("test runners must not instantiate and run this directly, only via suites we build")
037// @Ignore affects the Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
038@SuppressWarnings("JUnit4ClassUsedInJUnit3")
039public class MultimapContainsKeyTester<K, V> extends AbstractMultimapTester<K, V, Multimap<K, V>> {
040  @CollectionSize.Require(absent = ZERO)
041  public void testContainsKeyYes() {
042    assertTrue(multimap().containsKey(k0()));
043  }
044
045  public void testContainsKeyNo() {
046    assertFalse(multimap().containsKey(k3()));
047  }
048
049  public void testContainsKeysFromKeySet() {
050    for (K k : multimap().keySet()) {
051      assertTrue(multimap().containsKey(k));
052    }
053  }
054
055  public void testContainsKeyAgreesWithGet() {
056    for (K k : sampleKeys()) {
057      assertEquals(!multimap().get(k).isEmpty(), multimap().containsKey(k));
058    }
059  }
060
061  public void testContainsKeyAgreesWithAsMap() {
062    for (K k : sampleKeys()) {
063      assertEquals(multimap().containsKey(k), multimap().asMap().containsKey(k));
064    }
065  }
066
067  public void testContainsKeyAgreesWithKeySet() {
068    for (K k : sampleKeys()) {
069      assertEquals(multimap().containsKey(k), multimap().keySet().contains(k));
070    }
071  }
072
073  @MapFeature.Require(ALLOWS_NULL_KEYS)
074  @CollectionSize.Require(absent = ZERO)
075  public void testContainsKeyNullPresent() {
076    initMultimapWithNullKey();
077    assertTrue(multimap().containsKey(null));
078  }
079
080  @MapFeature.Require(ALLOWS_NULL_KEY_QUERIES)
081  public void testContainsKeyNullAbsent() {
082    assertFalse(multimap().containsKey(null));
083  }
084
085  @MapFeature.Require(absent = ALLOWS_NULL_KEY_QUERIES)
086  public void testContainsKeyNullDisallowed() {
087    assertThrows(NullPointerException.class, () -> multimap().containsKey(null));
088  }
089}