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/*
* 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.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.
*
* <p>This class is GWT compatible.
*
* @author George van den Driessche
*/
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);
}
}
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