1/*
2 * Copyright (C) 2013 The Guava Authors
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.google.common.collect.testing.google;
18
19import static com.google.common.collect.testing.features.CollectionFeature.ALLOWS_NULL_QUERIES;
20import static com.google.common.collect.testing.features.CollectionFeature.ALLOWS_NULL_VALUES;
21import static com.google.common.collect.testing.features.CollectionSize.SEVERAL;
22import static com.google.common.collect.testing.features.CollectionSize.ZERO;
23
24import com.google.common.annotations.GwtCompatible;
25import com.google.common.collect.testing.WrongType;
26import com.google.common.collect.testing.features.CollectionFeature;
27import com.google.common.collect.testing.features.CollectionSize;
28
29/**
30 * Tests for {@code Multiset#count}.
31 *
32 * @author Jared Levy
33 */
34@GwtCompatible(emulated = true)
35public class MultisetCountTester<E> extends AbstractMultisetTester<E> {
36
37  public void testCount_0() {
38    assertEquals("multiset.count(missing) didn't return 0",
39        0, getMultiset().count(samples.e3));
40  }
41
42  @CollectionSize.Require(absent = ZERO)
43  public void testCount_1() {
44    assertEquals("multiset.count(present) didn't return 1",
45        1, getMultiset().count(samples.e0));
46  }
47
48  @CollectionSize.Require(SEVERAL)
49  public void testCount_3() {
50    initThreeCopies();
51    assertEquals("multiset.count(thriceContained) didn't return 3",
52        3, getMultiset().count(samples.e0));
53  }
54
55  @CollectionFeature.Require(ALLOWS_NULL_QUERIES)
56  public void testCount_nullAbsent() {
57    assertEquals("multiset.count(null) didn't return 0",
58        0, getMultiset().count(null));
59  }
60
61  @CollectionFeature.Require(absent = ALLOWS_NULL_QUERIES)
62  public void testCount_null_forbidden() {
63    try {
64      getMultiset().count(null);
65      fail("Expected NullPointerException");
66    } catch (NullPointerException expected) {}
67  }
68
69  @CollectionSize.Require(absent = ZERO)
70  @CollectionFeature.Require(ALLOWS_NULL_VALUES)
71  public void testCount_nullPresent() {
72    initCollectionWithNullElement();
73    assertEquals(1, getMultiset().count(null));
74  }
75
76  public void testCount_wrongType() {
77    assertEquals("multiset.count(wrongType) didn't return 0",
78        0, getMultiset().count(WrongType.VALUE));
79  }
80}
81
82