001/*
002 * Copyright (C) 2007 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.testers;
018
019import static com.google.common.collect.testing.features.CollectionFeature.ALLOWS_NULL_QUERIES;
020import static com.google.common.collect.testing.features.CollectionFeature.ALLOWS_NULL_VALUES;
021import static com.google.common.collect.testing.features.CollectionSize.ZERO;
022
023import com.google.common.annotations.GwtCompatible;
024import com.google.common.collect.testing.AbstractCollectionTester;
025import com.google.common.collect.testing.MinimalCollection;
026import com.google.common.collect.testing.WrongType;
027import com.google.common.collect.testing.features.CollectionFeature;
028import com.google.common.collect.testing.features.CollectionSize;
029import java.util.Collection;
030
031/**
032 * A generic JUnit test which tests {@code containsAll()} operations on a collection. Can't be
033 * invoked directly; please see {@link
034 * com.google.common.collect.testing.CollectionTestSuiteBuilder}.
035 *
036 * @author Kevin Bourrillion
037 * @author Chris Povirk
038 */
039@GwtCompatible
040public class CollectionContainsAllTester<E> extends AbstractCollectionTester<E> {
041  public void testContainsAll_empty() {
042    assertTrue(
043        "containsAll(empty) should return true", collection.containsAll(MinimalCollection.of()));
044  }
045
046  @CollectionSize.Require(absent = ZERO)
047  public void testContainsAll_subset() {
048    assertTrue(
049        "containsAll(subset) should return true",
050        collection.containsAll(MinimalCollection.of(e0())));
051  }
052
053  public void testContainsAll_sameElements() {
054    assertTrue(
055        "containsAll(sameElements) should return true",
056        collection.containsAll(MinimalCollection.of(createSamplesArray())));
057  }
058
059  @SuppressWarnings("ModifyingCollectionWithItself")
060  public void testContainsAll_self() {
061    assertTrue("containsAll(this) should return true", collection.containsAll(collection));
062  }
063
064  public void testContainsAll_partialOverlap() {
065    assertFalse(
066        "containsAll(partialOverlap) should return false",
067        collection.containsAll(MinimalCollection.of(e0(), e3())));
068  }
069
070  public void testContainsAll_disjoint() {
071    assertFalse(
072        "containsAll(disjoint) should return false",
073        collection.containsAll(MinimalCollection.of(e3())));
074  }
075
076  @CollectionFeature.Require(absent = ALLOWS_NULL_QUERIES)
077  public void testContainsAll_nullNotAllowed() {
078    try {
079      assertFalse(collection.containsAll(MinimalCollection.of((E) null)));
080    } catch (NullPointerException tolerated) {
081    }
082  }
083
084  @CollectionFeature.Require(ALLOWS_NULL_QUERIES)
085  public void testContainsAll_nullAllowed() {
086    assertFalse(collection.containsAll(MinimalCollection.of((E) null)));
087  }
088
089  @CollectionFeature.Require(ALLOWS_NULL_VALUES)
090  @CollectionSize.Require(absent = ZERO)
091  public void testContainsAll_nullPresent() {
092    initCollectionWithNullElement();
093    assertTrue(collection.containsAll(MinimalCollection.of((E) null)));
094  }
095
096  public void testContainsAll_wrongType() {
097    Collection<WrongType> wrong = MinimalCollection.of(WrongType.VALUE);
098    try {
099      assertFalse(
100          "containsAll(wrongType) should return false or throw", collection.containsAll(wrong));
101    } catch (ClassCastException tolerated) {
102    }
103  }
104}