| /* |
| * Copyright (C) 2008 The Guava Authors |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.google.common.collect.testing; |
| |
| import com.google.common.annotations.GwtCompatible; |
| import com.google.common.collect.testing.features.CollectionSize; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collection; |
| import java.util.List; |
| |
| /** |
| * Generator for collection of a particular size. |
| * |
| * @author George van den Driessche |
| */ |
| @GwtCompatible |
| public final class OneSizeGenerator<T, E> implements OneSizeTestContainerGenerator<T, E> { |
| private final TestContainerGenerator<T, E> generator; |
| private final CollectionSize collectionSize; |
| |
| public OneSizeGenerator(TestContainerGenerator<T, E> generator, CollectionSize collectionSize) { |
| this.generator = generator; |
| this.collectionSize = collectionSize; |
| } |
| |
| @Override |
| public TestContainerGenerator<T, E> getInnerGenerator() { |
| return generator; |
| } |
| |
| @Override |
| public SampleElements<E> samples() { |
| return generator.samples(); |
| } |
| |
| @Override |
| public T create(Object... elements) { |
| return generator.create(elements); |
| } |
| |
| @Override |
| public E[] createArray(int length) { |
| return generator.createArray(length); |
| } |
| |
| @Override |
| public T createTestSubject() { |
| Collection<E> elements = getSampleElements(getCollectionSize().getNumElements()); |
| return generator.create(elements.toArray()); |
| } |
| |
| @Override |
| public Collection<E> getSampleElements(int howMany) { |
| SampleElements<E> samples = samples(); |
| @SuppressWarnings("unchecked") |
| List<E> allSampleElements = |
| Arrays.asList(samples.e0(), samples.e1(), samples.e2(), samples.e3(), samples.e4()); |
| return new ArrayList<E>(allSampleElements.subList(0, howMany)); |
| } |
| |
| @Override |
| public CollectionSize getCollectionSize() { |
| return collectionSize; |
| } |
| |
| @Override |
| public Iterable<E> order(List<E> insertionOrder) { |
| return generator.order(insertionOrder); |
| } |
| } |