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 030@ElementTypesAreNonnullByDefault 031public abstract class TestStringSortedSetGenerator extends TestStringSetGenerator 032 implements TestSortedSetGenerator<String> { 033 034 @Override 035 public SortedSet<String> create(Object... elements) { 036 return (SortedSet<String>) super.create(elements); 037 } 038 039 @Override 040 protected abstract SortedSet<String> create(String[] elements); 041 042 /** Sorts the elements by their natural ordering. */ 043 @Override 044 public List<String> order(List<String> insertionOrder) { 045 Collections.sort(insertionOrder); 046 return insertionOrder; 047 } 048 049 @Override 050 public String belowSamplesLesser() { 051 return "!! a"; 052 } 053 054 @Override 055 public String belowSamplesGreater() { 056 return "!! b"; 057 } 058 059 @Override 060 public String aboveSamplesLesser() { 061 return "~~ a"; 062 } 063 064 @Override 065 public String aboveSamplesGreater() { 066 return "~~ b"; 067 } 068}