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/*
* Copyright (C) 2007 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.SampleElements.Strings;
import java.util.List;
import java.util.Set;
/**
* Create string sets for collection tests.
*
* <p>This class is GWT compatible.
*
* @author Kevin Bourrillion
*/
@GwtCompatible
public abstract class TestStringSetGenerator implements TestSetGenerator<String>
{
@Override
public SampleElements<String> samples() {
return new Strings();
}
@Override
public Set<String> create(Object... elements) {
String[] array = new String[elements.length];
int i = 0;
for (Object e : elements) {
array[i++] = (String) e;
}
return create(array);
}
protected abstract Set<String> create(String[] elements);
@Override
public String[] createArray(int length) {
return new String[length];
}
/**
* {@inheritDoc}
*
* <p>By default, returns the supplied elements in their given order; however,
* generators for containers with a known order other than insertion order
* must override this method.
*
* <p>Note: This default implementation is overkill (but valid) for an
* unordered container. An equally valid implementation for an unordered
* container is to throw an exception. The chosen implementation, however, has
* the advantage of working for insertion-ordered containers, as well.
*/
@Override
public List<String> order(List<String> insertionOrder) {
return insertionOrder;
}
}
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