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;
022
023import com.google.common.annotations.GwtCompatible;
024import com.google.common.collect.Multimap;
025import com.google.common.collect.testing.features.CollectionSize;
026import com.google.common.collect.testing.features.MapFeature;
027import org.junit.Ignore;
028
029/**
030 * Tester for the {@code containsKey} methods of {@code Multimap} and its {@code asMap()} view.
031 *
032 * @author Louis Wasserman
033 */
034@GwtCompatible
035@Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
036@SuppressWarnings("JUnit4ClassUsedInJUnit3")
037public class MultimapContainsKeyTester<K, V> extends AbstractMultimapTester<K, V, Multimap<K, V>> {
038  @CollectionSize.Require(absent = ZERO)
039  public void testContainsKeyYes() {
040    assertTrue(multimap().containsKey(k0()));
041  }
042
043  public void testContainsKeyNo() {
044    assertFalse(multimap().containsKey(k3()));
045  }
046
047  public void testContainsKeysFromKeySet() {
048    for (K k : multimap().keySet()) {
049      assertTrue(multimap().containsKey(k));
050    }
051  }
052
053  public void testContainsKeyAgreesWithGet() {
054    for (K k : sampleKeys()) {
055      assertEquals(!multimap().get(k).isEmpty(), multimap().containsKey(k));
056    }
057  }
058
059  public void testContainsKeyAgreesWithAsMap() {
060    for (K k : sampleKeys()) {
061      assertEquals(multimap().containsKey(k), multimap().asMap().containsKey(k));
062    }
063  }
064
065  public void testContainsKeyAgreesWithKeySet() {
066    for (K k : sampleKeys()) {
067      assertEquals(multimap().containsKey(k), multimap().keySet().contains(k));
068    }
069  }
070
071  @MapFeature.Require(ALLOWS_NULL_KEYS)
072  @CollectionSize.Require(absent = ZERO)
073  public void testContainsKeyNullPresent() {
074    initMultimapWithNullKey();
075    assertTrue(multimap().containsKey(null));
076  }
077
078  @MapFeature.Require(ALLOWS_NULL_KEY_QUERIES)
079  public void testContainsKeyNullAbsent() {
080    assertFalse(multimap().containsKey(null));
081  }
082
083  @MapFeature.Require(absent = ALLOWS_NULL_KEY_QUERIES)
084  public void testContainsKeyNullDisallowed() {
085    try {
086      multimap().containsKey(null);
087      fail("Expected NullPointerException");
088    } catch (NullPointerException expected) {
089      // success
090    }
091  }
092}