Coverage Summary for Class: MultisetReadsTester (com.google.common.collect.testing.google)

1 /*
2  * Copyright (C) 2008 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 
17 package com.google.common.collect.testing.google;
18 
19 import static com.google.common.collect.testing.features.CollectionSize.ONE;
20 import static com.google.common.collect.testing.features.CollectionSize.ZERO;
21 
22 import com.google.common.annotations.GwtCompatible;
23 import com.google.common.collect.HashMultiset;
24 import com.google.common.collect.Multiset;
25 import com.google.common.collect.Multisets;
26 import com.google.common.collect.testing.features.CollectionSize;
27 import org.junit.Ignore;
28 
29 /**
30  * A generic JUnit test which tests multiset-specific read operations. Can't be invoked directly;
31  * please see {@link com.google.common.collect.testing.SetTestSuiteBuilder}.
32  *
33  * @author Jared Levy
34  */
35 @GwtCompatible
36 @Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
37 public class MultisetReadsTester<E> extends AbstractMultisetTester<E> {
38 
39   @CollectionSize.Require(absent = ZERO)
40   public void testElementSet_contains() {
41     assertTrue(
42         "multiset.elementSet().contains(present) returned false",
43         getMultiset().elementSet().contains(e0()));
44   }
45 
46   @CollectionSize.Require(absent = ZERO)
47   public void testEntrySet_contains() {
48     assertTrue(
49         "multiset.entrySet() didn't contain [present, 1]",
50         getMultiset().entrySet().contains(Multisets.immutableEntry(e0(), 1)));
51   }
52 
53   public void testEntrySet_contains_count0() {
54     assertFalse(
55         "multiset.entrySet() contains [missing, 0]",
56         getMultiset().entrySet().contains(Multisets.immutableEntry(e3(), 0)));
57   }
58 
59   public void testEntrySet_contains_nonentry() {
60     assertFalse(
61         "multiset.entrySet() contains a non-entry", getMultiset().entrySet().contains(e0()));
62   }
63 
64   public void testEntrySet_twice() {
65     assertEquals(
66         "calling multiset.entrySet() twice returned unequal sets",
67         getMultiset().entrySet(),
68         getMultiset().entrySet());
69   }
70 
71   @CollectionSize.Require(ZERO)
72   public void testEntrySet_hashCode_size0() {
73     assertEquals(
74         "multiset.entrySet() has incorrect hash code", 0, getMultiset().entrySet().hashCode());
75   }
76 
77   @CollectionSize.Require(ONE)
78   public void testEntrySet_hashCode_size1() {
79     assertEquals(
80         "multiset.entrySet() has incorrect hash code",
81         1 ^ e0().hashCode(),
82         getMultiset().entrySet().hashCode());
83   }
84 
85   public void testEquals_yes() {
86     assertTrue(
87         "multiset doesn't equal a multiset with the same elements",
88         getMultiset().equals(HashMultiset.create(getSampleElements())));
89   }
90 
91   public void testEquals_differentSize() {
92     Multiset<E> other = HashMultiset.create(getSampleElements());
93     other.add(e0());
94     assertFalse("multiset equals a multiset with a different size", getMultiset().equals(other));
95   }
96 
97   @CollectionSize.Require(absent = ZERO)
98   public void testEquals_differentElements() {
99     Multiset<E> other = HashMultiset.create(getSampleElements());
100     other.remove(e0());
101     other.add(e3());
102     assertFalse("multiset equals a multiset with different elements", getMultiset().equals(other));
103   }
104 
105   @CollectionSize.Require(ZERO)
106   public void testHashCode_size0() {
107     assertEquals("multiset has incorrect hash code", 0, getMultiset().hashCode());
108   }
109 
110   @CollectionSize.Require(ONE)
111   public void testHashCode_size1() {
112     assertEquals("multiset has incorrect hash code", 1 ^ e0().hashCode(), getMultiset().hashCode());
113   }
114 }