001/*
002 * Copyright (C) 2007 The Guava Authors
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package com.google.common.collect.testing;
018
019import static java.util.Collections.sort;
020
021import com.google.common.annotations.GwtCompatible;
022import com.google.common.collect.testing.SampleElements.Enums;
023import java.util.List;
024import java.util.Set;
025import org.jspecify.annotations.NullMarked;
026
027/**
028 * An abstract TestSetGenerator for generating sets containing enum values.
029 *
030 * @author Kevin Bourrillion
031 */
032@GwtCompatible
033@NullMarked
034public abstract class TestEnumSetGenerator implements TestSetGenerator<AnEnum> {
035  @Override
036  public SampleElements<AnEnum> samples() {
037    return new Enums();
038  }
039
040  @Override
041  public Set<AnEnum> create(Object... elements) {
042    AnEnum[] array = new AnEnum[elements.length];
043    int i = 0;
044    for (Object e : elements) {
045      array[i++] = (AnEnum) e;
046    }
047    return create(array);
048  }
049
050  protected abstract Set<AnEnum> create(AnEnum[] elements);
051
052  @Override
053  public AnEnum[] createArray(int length) {
054    return new AnEnum[length];
055  }
056
057  /** Sorts the enums according to their natural ordering. */
058  @Override
059  public List<AnEnum> order(List<AnEnum> insertionOrder) {
060    sort(insertionOrder);
061    return insertionOrder;
062  }
063}