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/*
* Copyright (C) 2009 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 static com.google.common.collect.testing.Helpers.orderEntriesByKey;
import com.google.common.annotations.GwtCompatible;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
/**
* Implementation helper for {@link TestMapGenerator} for use with enum maps.
*
* <p>This class is GWT compatible.
*
* @author Kevin Bourrillion
*/
@GwtCompatible
public abstract class TestEnumMapGenerator
implements TestMapGenerator<AnEnum, String> {
@Override
public SampleElements<Entry<AnEnum, String>> samples() {
return new SampleElements<Entry<AnEnum, String>>(
Helpers.mapEntry(AnEnum.A, "January"),
Helpers.mapEntry(AnEnum.B, "February"),
Helpers.mapEntry(AnEnum.C, "March"),
Helpers.mapEntry(AnEnum.D, "April"),
Helpers.mapEntry(AnEnum.E, "May")
);
}
@Override
public final Map<AnEnum, String> create(Object... entries) {
@SuppressWarnings("unchecked")
Entry<AnEnum, String>[] array = new Entry[entries.length];
int i = 0;
for (Object o : entries) {
@SuppressWarnings("unchecked")
Entry<AnEnum, String> e = (Entry<AnEnum, String>) o;
array[i++] = e;
}
return create(array);
}
protected abstract Map<AnEnum, String> create(
Entry<AnEnum, String>[] entries);
@Override
@SuppressWarnings("unchecked")
public final Entry<AnEnum, String>[] createArray(int length) {
return new Entry[length];
}
@Override
public final AnEnum[] createKeyArray(int length) {
return new AnEnum[length];
}
@Override
public final String[] createValueArray(int length) {
return new String[length];
}
/** Returns the elements sorted in natural order. */
@Override
public Iterable<Entry<AnEnum, String>> order(
List<Entry<AnEnum, String>> insertionOrder) {
return orderEntriesByKey(insertionOrder);
}
}
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