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;
030import org.junit.Ignore;
031
032/**
033 * A generic JUnit test which tests {@code containsAll()} operations on a collection. Can't be
034 * invoked directly; please see {@link
035 * com.google.common.collect.testing.CollectionTestSuiteBuilder}.
036 *
037 * @author Kevin Bourrillion
038 * @author Chris Povirk
039 */
040@SuppressWarnings("unchecked") // too many "unchecked generic array creations"
041@GwtCompatible
042@Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
043public class CollectionContainsAllTester<E> extends AbstractCollectionTester<E> {
044  public void testContainsAll_empty() {
045    assertTrue(
046        "containsAll(empty) should return true", collection.containsAll(MinimalCollection.of()));
047  }
048
049  @CollectionSize.Require(absent = ZERO)
050  public void testContainsAll_subset() {
051    assertTrue(
052        "containsAll(subset) should return true",
053        collection.containsAll(MinimalCollection.of(e0())));
054  }
055
056  public void testContainsAll_sameElements() {
057    assertTrue(
058        "containsAll(sameElements) should return true",
059        collection.containsAll(MinimalCollection.of(createSamplesArray())));
060  }
061
062  @SuppressWarnings("ModifyingCollectionWithItself")
063  public void testContainsAll_self() {
064    assertTrue("containsAll(this) should return true", collection.containsAll(collection));
065  }
066
067  public void testContainsAll_partialOverlap() {
068    assertFalse(
069        "containsAll(partialOverlap) should return false",
070        collection.containsAll(MinimalCollection.of(e0(), e3())));
071  }
072
073  public void testContainsAll_disjoint() {
074    assertFalse(
075        "containsAll(disjoint) should return false",
076        collection.containsAll(MinimalCollection.of(e3())));
077  }
078
079  @CollectionFeature.Require(absent = ALLOWS_NULL_QUERIES)
080  public void testContainsAll_nullNotAllowed() {
081    try {
082      assertFalse(collection.containsAll(MinimalCollection.of((E) null)));
083    } catch (NullPointerException tolerated) {
084    }
085  }
086
087  @CollectionFeature.Require(ALLOWS_NULL_QUERIES)
088  public void testContainsAll_nullAllowed() {
089    assertFalse(collection.containsAll(MinimalCollection.of((E) null)));
090  }
091
092  @CollectionFeature.Require(ALLOWS_NULL_VALUES)
093  @CollectionSize.Require(absent = ZERO)
094  public void testContainsAll_nullPresent() {
095    initCollectionWithNullElement();
096    assertTrue(collection.containsAll(MinimalCollection.of((E) null)));
097  }
098
099  public void testContainsAll_wrongType() {
100    Collection<WrongType> wrong = MinimalCollection.of(WrongType.VALUE);
101    try {
102      assertFalse(
103          "containsAll(wrongType) should return false or throw", collection.containsAll(wrong));
104    } catch (ClassCastException tolerated) {
105    }
106  }
107}