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.
036public class MultimapContainsKeyTester<K, V> extends AbstractMultimapTester<K, V, Multimap<K, V>> {
037  @CollectionSize.Require(absent = ZERO)
038  public void testContainsKeyYes() {
039    assertTrue(multimap().containsKey(k0()));
040  }
041
042  public void testContainsKeyNo() {
043    assertFalse(multimap().containsKey(k3()));
044  }
045
046  public void testContainsKeysFromKeySet() {
047    for (K k : multimap().keySet()) {
048      assertTrue(multimap().containsKey(k));
049    }
050  }
051
052  public void testContainsKeyAgreesWithGet() {
053    for (K k : sampleKeys()) {
054      assertEquals(!multimap().get(k).isEmpty(), multimap().containsKey(k));
055    }
056  }
057
058  public void testContainsKeyAgreesWithAsMap() {
059    for (K k : sampleKeys()) {
060      assertEquals(multimap().containsKey(k), multimap().asMap().containsKey(k));
061    }
062  }
063
064  public void testContainsKeyAgreesWithKeySet() {
065    for (K k : sampleKeys()) {
066      assertEquals(multimap().containsKey(k), multimap().keySet().contains(k));
067    }
068  }
069
070  @MapFeature.Require(ALLOWS_NULL_KEYS)
071  @CollectionSize.Require(absent = ZERO)
072  public void testContainsKeyNullPresent() {
073    initMultimapWithNullKey();
074    assertTrue(multimap().containsKey(null));
075  }
076
077  @MapFeature.Require(ALLOWS_NULL_KEY_QUERIES)
078  public void testContainsKeyNullAbsent() {
079    assertFalse(multimap().containsKey(null));
080  }
081
082  @MapFeature.Require(absent = ALLOWS_NULL_KEY_QUERIES)
083  public void testContainsKeyNullDisallowed() {
084    try {
085      multimap().containsKey(null);
086      fail("Expected NullPointerException");
087    } catch (NullPointerException expected) {
088      // success
089    }
090  }
091}