001/*
002 * Copyright (C) 2008 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 com.google.common.annotations.GwtCompatible;
020import java.util.Collections;
021import java.util.List;
022import java.util.SortedSet;
023
024/**
025 * Create string sets for testing collections that are sorted by natural ordering.
026 *
027 * @author Jared Levy
028 */
029@GwtCompatible
030public abstract class TestStringSortedSetGenerator extends TestStringSetGenerator
031    implements TestSortedSetGenerator<String> {
032
033  @Override
034  public SortedSet<String> create(Object... elements) {
035    return (SortedSet<String>) super.create(elements);
036  }
037
038  @Override
039  protected abstract SortedSet<String> create(String[] elements);
040
041  /** Sorts the elements by their natural ordering. */
042  @Override
043  public List<String> order(List<String> insertionOrder) {
044    Collections.sort(insertionOrder);
045    return insertionOrder;
046  }
047
048  @Override
049  public String belowSamplesLesser() {
050    return "!! a";
051  }
052
053  @Override
054  public String belowSamplesGreater() {
055    return "!! b";
056  }
057
058  @Override
059  public String aboveSamplesLesser() {
060    return "~~ a";
061  }
062
063  @Override
064  public String aboveSamplesGreater() {
065    return "~~ b";
066  }
067}