TestStringSetMultimapGenerator.java revision 7dd252788645e940eada959bdde927426e2531c9 
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 */
16package com.google.common.collect.testing.google;
17
18import com.google.common.annotations.GwtCompatible;
19import com.google.common.collect.SetMultimap;
20import com.google.common.collect.testing.Helpers;
21import com.google.common.collect.testing.SampleElements;
22
23import java.util.Collection;
24import java.util.List;
25import java.util.Map;
26import java.util.Map.Entry;
27
28/**
29 * A skeleton generator for a {@code SetMultimap} implementation.
30 *
31 * @author Louis Wasserman
32 */
33@GwtCompatible
34public abstract class TestStringSetMultimapGenerator
35    implements TestSetMultimapGenerator<String, String> {
36
37  @Override
38  public SampleElements<Map.Entry<String, String>> samples() {
39    return new SampleElements<Map.Entry<String, String>>(
40        Helpers.mapEntry("one", "January"),
41        Helpers.mapEntry("two", "February"),
42        Helpers.mapEntry("three", "March"),
43        Helpers.mapEntry("four", "April"),
44        Helpers.mapEntry("five", "May"));
45  }
46
47  @Override
48  public SampleElements<String> sampleKeys() {
49    return new SampleElements<String>("one", "two", "three", "four", "five");
50  }
51
52  @Override
53  public SampleElements<String> sampleValues() {
54    return new SampleElements<String>("January", "February", "March", "April", "May");
55  }
56
57  @Override
58  public Collection<String> createCollection(Iterable<? extends String> values) {
59    return Helpers.copyToSet(values);
60  }
61
62  @Override
63  public final SetMultimap<String, String> create(Object... entries) {
64    @SuppressWarnings("unchecked")
65    Entry<String, String>[] array = new Entry[entries.length];
66    int i = 0;
67    for (Object o : entries) {
68      @SuppressWarnings("unchecked")
69      Entry<String, String> e = (Entry<String, String>) o;
70      array[i++] = e;
71    }
72    return create(array);
73  }
74
75  protected abstract SetMultimap<String, String> create(
76      Entry<String, String>[] entries);
77
78  @Override
79  @SuppressWarnings("unchecked")
80  public final Entry<String, String>[] createArray(int length) {
81    return new Entry[length];
82  }
83
84  @Override
85  public final String[] createKeyArray(int length) {
86    return new String[length];
87  }
88
89  @Override
90  public final String[] createValueArray(int length) {
91    return new String[length];
92  }
93
94  /** Returns the original element list, unchanged. */
95  @Override
96  public Iterable<Entry<String, String>> order(
97      List<Entry<String, String>> insertionOrder) {
98    return insertionOrder;
99  }
100}
101