001/*
002 * Copyright (C) 2013 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.CollectionFeature.SUPPORTS_ADD;
020import static com.google.common.collect.testing.google.ReflectionFreeAssertThrows.assertThrows;
021import static java.util.Arrays.asList;
022
023import com.google.common.annotations.GwtCompatible;
024import com.google.common.collect.testing.features.CollectionFeature;
025import java.util.Collections;
026import org.junit.Ignore;
027
028/**
029 * Tests for {@code Multiset.add}.
030 *
031 * @author Jared Levy
032 */
033@GwtCompatible
034@Ignore("test runners must not instantiate and run this directly, only via suites we build")
035// @Ignore affects the Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
036@SuppressWarnings("JUnit4ClassUsedInJUnit3")
037public class MultisetAddTester<E> extends AbstractMultisetTester<E> {
038  @CollectionFeature.Require(absent = SUPPORTS_ADD)
039  public void testAddUnsupported() {
040    assertThrows(UnsupportedOperationException.class, () -> getMultiset().add(e0()));
041  }
042
043  @CollectionFeature.Require(SUPPORTS_ADD)
044  public void testAddMeansAddOne() {
045    int originalCount = getMultiset().count(e0());
046    assertTrue(getMultiset().add(e0()));
047    assertEquals(originalCount + 1, getMultiset().count(e0()));
048  }
049
050  @CollectionFeature.Require(SUPPORTS_ADD)
051  public void testAddOccurrencesZero() {
052    int originalCount = getMultiset().count(e0());
053    assertEquals("old count", originalCount, getMultiset().add(e0(), 0));
054    expectUnchanged();
055  }
056
057  @CollectionFeature.Require(SUPPORTS_ADD)
058  public void testAddOccurrences() {
059    int originalCount = getMultiset().count(e0());
060    assertEquals("old count", originalCount, getMultiset().add(e0(), 2));
061    assertEquals("old count", originalCount + 2, getMultiset().count(e0()));
062  }
063
064  @CollectionFeature.Require(SUPPORTS_ADD)
065  public void testAddSeveralTimes() {
066    int originalCount = getMultiset().count(e0());
067    assertEquals(originalCount, getMultiset().add(e0(), 2));
068    assertTrue(getMultiset().add(e0()));
069    assertEquals(originalCount + 3, getMultiset().add(e0(), 1));
070    assertEquals(originalCount + 4, getMultiset().count(e0()));
071  }
072
073  @CollectionFeature.Require(absent = SUPPORTS_ADD)
074  public void testAddOccurrences_unsupported() {
075    assertThrows(UnsupportedOperationException.class, () -> getMultiset().add(e0(), 2));
076  }
077
078  @CollectionFeature.Require(SUPPORTS_ADD)
079  public void testAddOccurrencesNegative() {
080    assertThrows(IllegalArgumentException.class, () -> getMultiset().add(e0(), -1));
081  }
082
083  @CollectionFeature.Require(SUPPORTS_ADD)
084  public void testAddTooMany() {
085    getMultiset().add(e3(), Integer.MAX_VALUE);
086    assertThrows(IllegalArgumentException.class, () -> getMultiset().add(e3()));
087    assertEquals(Integer.MAX_VALUE, getMultiset().count(e3()));
088    assertEquals(Integer.MAX_VALUE, getMultiset().size());
089  }
090
091  @CollectionFeature.Require(SUPPORTS_ADD)
092  public void testAddAll_emptySet() {
093    assertFalse(getMultiset().addAll(Collections.<E>emptySet()));
094    expectUnchanged();
095  }
096
097  @CollectionFeature.Require(SUPPORTS_ADD)
098  public void testAddAll_emptyMultiset() {
099    assertFalse(getMultiset().addAll(getSubjectGenerator().create()));
100    expectUnchanged();
101  }
102
103  @CollectionFeature.Require(SUPPORTS_ADD)
104  public void testAddAll_nonEmptyList() {
105    assertTrue(getMultiset().addAll(asList(e3(), e4(), e3())));
106    expectAdded(e3(), e4(), e3());
107  }
108
109  @CollectionFeature.Require(SUPPORTS_ADD)
110  public void testAddAll_nonEmptyMultiset() {
111    assertTrue(getMultiset().addAll(getSubjectGenerator().create(e3(), e4(), e3())));
112    expectAdded(e3(), e4(), e3());
113  }
114}