1 /* 2 * Copyright (C) 2017 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 package android.platform.longevity.scheduler; 17 18 import android.os.Bundle; 19 20 import java.util.Collections; 21 import java.util.List; 22 import java.util.Random; 23 24 import org.junit.runner.Runner; 25 26 /** 27 * A {@link Scheduler} for shuffling the order of test execution. 28 */ 29 public class Shuffle implements Scheduler { 30 static final String SHUFFLE_OPTION_NAME = "shuffle"; 31 private static final boolean SHUFFLE_DEFAULT_VALUE = false; 32 static final String SEED_OPTION_NAME = "seed"; 33 34 @Override 35 public List<Runner> apply(Bundle args, List<Runner> input) { 36 boolean shuffle = Boolean.parseBoolean( 37 args.getString(SHUFFLE_OPTION_NAME, String.valueOf(SHUFFLE_DEFAULT_VALUE))); 38 long seed = Long.parseLong( 39 args.getString(SEED_OPTION_NAME, String.valueOf(new Random().nextLong()))); 40 // TODO: Log the options selected. 41 if (shuffle) { 42 Collections.shuffle(input, new Random(seed)); 43 } 44 return input; 45 } 46 } 47
