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.Description;
21
22/**
23 * Order by class name first, then display name.
24 */
25public class DescriptionComparator implements Comparator<Description> {
26
27    private static final DescriptionComparator DESCRIPTION_COMPARATOR =
28            new DescriptionComparator();
29
30    public static DescriptionComparator getInstance() {
31        return DESCRIPTION_COMPARATOR;
32    }
33
34    private DescriptionComparator() {
35    }
36
37    @Override
38    public int compare(Description d1, Description d2) {
39        String c1 = d1.getClassName();
40        String c2 = d2.getClassName();
41        int result = c1.compareTo(c2);
42        if (result != 0) {
43            return result;
44        }
45
46        return d1.getDisplayName().compareTo(d2.getDisplayName());
47    }
48}
49