1/* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package vogar.target.junit; 18 19import java.util.Comparator; 20import org.junit.runner.Describable; 21import org.junit.runner.Description; 22 23/** 24 * A comparator of {@link Describable} instances. 25 * 26 * <p>Compares two {@link Describable} objects by comparing their 27 * {@link Describable#getDescription() Description} using the 28 * {@link DescriptionComparator#getInstance()}. 29 */ 30public class DescribableComparator implements Comparator<Describable> { 31 32 private static final DescribableComparator DESCRIBABLE_COMPARATOR = 33 new DescribableComparator(); 34 private DescriptionComparator descriptionComparator = DescriptionComparator.getInstance(); 35 36 public static DescribableComparator getInstance() { 37 return DESCRIBABLE_COMPARATOR; 38 } 39 40 private DescribableComparator() { 41 } 42 43 @Override 44 public int compare(Describable d1, Describable d2) { 45 return descriptionComparator.compare(d1.getDescription(), d2.getDescription()); 46 } 47} 48