1 /*
2 * Copyright © 2016 Greg Chabala
3 *
4 * This file is part of brick-control-lab.
5 *
6 * brick-control-lab is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU Lesser General Public License as
8 * published by the Free Software Foundation, either version 3 of the
9 * License, or (at your option) any later version.
10 *
11 * brick-control-lab is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public License
17 * along with brick-control-lab. If not, see http://www.gnu.org/licenses/.
18 */
19 package org.chabala.brick.controllab;
20
21 import java.util.Random;
22
23 /**
24 * Helper for choosing random enum instances for tests.
25 */
26 public class RandomEnum {
27
28 private Random random = new Random();
29
30 public <T extends Enum<?>> T get(Class<T> clazz) {
31 T[] enumValues = clazz.getEnumConstants();
32 int ordinal = random.nextInt(enumValues.length);
33 return enumValues[ordinal];
34 }
35 }