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

1 /*
2  * Copyright (C) 2012 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 com.google.common.annotations.GwtCompatible;
20 import com.google.common.collect.BiMap;
21 import com.google.common.collect.testing.AbstractMapTester;
22 import com.google.common.collect.testing.Helpers;
23 import java.util.ArrayList;
24 import java.util.Collection;
25 import java.util.List;
26 import java.util.Map.Entry;
27 import org.junit.Ignore;
28 
29 /** Skeleton for a tester of a {@code BiMap}. */
30 @GwtCompatible
31 @Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
32 public abstract class AbstractBiMapTester<K, V> extends AbstractMapTester<K, V> {
33 
34   @Override
35   protected BiMap<K, V> getMap() {
36     return (BiMap<K, V>) super.getMap();
37   }
38 
39   static <K, V> Entry<V, K> reverseEntry(Entry<K, V> entry) {
40     return Helpers.mapEntry(entry.getValue(), entry.getKey());
41   }
42 
43   @Override
44   protected void expectContents(Collection<Entry<K, V>> expected) {
45     super.expectContents(expected);
46     List<Entry<V, K>> reversedEntries = new ArrayList<>();
47     for (Entry<K, V> entry : expected) {
48       reversedEntries.add(reverseEntry(entry));
49     }
50     Helpers.assertEqualIgnoringOrder(getMap().inverse().entrySet(), reversedEntries);
51 
52     for (Entry<K, V> entry : expected) {
53       assertEquals(
54           "Wrong key for value " + entry.getValue(),
55           entry.getKey(),
56           getMap().inverse().get(entry.getValue()));
57     }
58   }
59 
60   @Override
61   protected void expectMissing(Entry<K, V>... entries) {
62     super.expectMissing(entries);
63     for (Entry<K, V> entry : entries) {
64       Entry<V, K> reversed = reverseEntry(entry);
65       BiMap<V, K> inv = getMap().inverse();
66       assertFalse(
67           "Inverse should not contain entry " + reversed, inv.entrySet().contains(reversed));
68       assertFalse(
69           "Inverse should not contain key " + reversed.getKey(),
70           inv.containsKey(reversed.getKey()));
71       assertFalse(
72           "Inverse should not contain value " + reversed.getValue(),
73           inv.containsValue(reversed.getValue()));
74       /*
75        * TODO(cpovirk): This is a bit stronger than super.expectMissing(), which permits a <key,
76        * someOtherValue> pair.
77        */
78       assertNull(
79           "Inverse should not return a mapping for key " + reversed.getKey(),
80           inv.get(reversed.getKey()));
81     }
82   }
83 }