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

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;
18 
19 import com.google.common.annotations.GwtCompatible;
20 import com.google.common.collect.testing.features.CollectionSize;
21 import java.util.ArrayList;
22 import java.util.Arrays;
23 import java.util.Collection;
24 import java.util.List;
25 
26 /**
27  * Generator for collection of a particular size.
28  *
29  * @author George van den Driessche
30  */
31 @GwtCompatible
32 public final class OneSizeGenerator<T, E> implements OneSizeTestContainerGenerator<T, E> {
33   private final TestContainerGenerator<T, E> generator;
34   private final CollectionSize collectionSize;
35 
36   public OneSizeGenerator(TestContainerGenerator<T, E> generator, CollectionSize collectionSize) {
37     this.generator = generator;
38     this.collectionSize = collectionSize;
39   }
40 
41   @Override
42   public TestContainerGenerator<T, E> getInnerGenerator() {
43     return generator;
44   }
45 
46   @Override
47   public SampleElements<E> samples() {
48     return generator.samples();
49   }
50 
51   @Override
52   public T create(Object... elements) {
53     return generator.create(elements);
54   }
55 
56   @Override
57   public E[] createArray(int length) {
58     return generator.createArray(length);
59   }
60 
61   @Override
62   public T createTestSubject() {
63     Collection<E> elements = getSampleElements(getCollectionSize().getNumElements());
64     return generator.create(elements.toArray());
65   }
66 
67   @Override
68   public Collection<E> getSampleElements(int howMany) {
69     SampleElements<E> samples = samples();
70     @SuppressWarnings("unchecked")
71     List<E> allSampleElements =
72         Arrays.asList(samples.e0(), samples.e1(), samples.e2(), samples.e3(), samples.e4());
73     return new ArrayList<E>(allSampleElements.subList(0, howMany));
74   }
75 
76   @Override
77   public CollectionSize getCollectionSize() {
78     return collectionSize;
79   }
80 
81   @Override
82   public Iterable<E> order(List<E> insertionOrder) {
83     return generator.order(insertionOrder);
84   }
85 }