1 /* 2 * Copyright (C) 2014 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.sample.cts; 17 18 import android.sample.SampleDeviceActivity; 19 import android.test.ActivityInstrumentationTestCase2; 20 21 import com.android.compatibility.common.util.DeviceReportLog; 22 import com.android.compatibility.common.util.MeasureRun; 23 import com.android.compatibility.common.util.MeasureTime; 24 import com.android.compatibility.common.util.ResultType; 25 import com.android.compatibility.common.util.ResultUnit; 26 import com.android.compatibility.common.util.Stat; 27 28 import java.util.Arrays; 29 import java.util.Random; 30 31 /** 32 * A simple compatibility test which includes results in the report. 33 * 34 * This test measures the time taken to run a workload and adds in the report. 35 */ 36 public class SampleDeviceResultTest extends ActivityInstrumentationTestCase2<SampleDeviceActivity> { 37 38 /** 39 * Name of the report log to store test metrics. 40 */ 41 private static final String REPORT_LOG_NAME = "CtsSampleDeviceTestCases"; 42 43 /** 44 * The number of times to repeat the test. 45 */ 46 private static final int REPEAT = 5; 47 48 /** 49 * A {@link Random} to generate random integers to test the sort. 50 */ 51 private static final Random random = new Random(12345); 52 53 /** 54 * Constructor which passes the class of the activity to be instrumented. 55 */ 56 public SampleDeviceResultTest() { 57 super(SampleDeviceActivity.class); 58 } 59 60 /** 61 * Measures the time taken to sort an array. 62 */ 63 public void testSort() throws Exception { 64 // MeasureTime runs the workload N times and records the time taken by each run. 65 double[] result = MeasureTime.measure(REPEAT, new MeasureRun() { 66 /** 67 * The size of the array to sort. 68 */ 69 private static final int ARRAY_SIZE = 100000; 70 private int[] array; 71 @Override 72 public void prepare(int i) throws Exception { 73 array = createArray(ARRAY_SIZE); 74 } 75 @Override 76 public void run(int i) throws Exception { 77 Arrays.sort(array); 78 assertTrue("Array not sorted", isSorted(array)); 79 } 80 }); 81 // Compute the stats. 82 Stat.StatResult stat = Stat.getStat(result); 83 // Create a new report to hold the metrics. 84 String streamName = "test_sort"; 85 DeviceReportLog reportLog = new DeviceReportLog(REPORT_LOG_NAME, streamName); 86 // Add the results to the report. 87 reportLog.addValues("times", result, ResultType.LOWER_BETTER, ResultUnit.MS); 88 reportLog.addValue("min", stat.mMin, ResultType.LOWER_BETTER, ResultUnit.MS); 89 reportLog.addValue("max", stat.mMax, ResultType.LOWER_BETTER, ResultUnit.MS); 90 // Set a summary. 91 reportLog.setSummary("average", stat.mAverage, ResultType.LOWER_BETTER, ResultUnit.MS); 92 // Submit the report to the given instrumentation. 93 reportLog.submit(getInstrumentation()); 94 } 95 96 /** 97 * Creates an array filled with random numbers of the given size. 98 */ 99 private static int[] createArray(int size) { 100 int[] array = new int[size]; 101 for (int i = 0; i < size; i++) { 102 array[i] = random.nextInt(); 103 } 104 return array; 105 } 106 107 /** 108 * Tests an array is sorted. 109 */ 110 private static boolean isSorted(int[] array) { 111 int len = array.length; 112 for (int i = 0, j = 1; j < len; i++, j++) { 113 if (array[i] > array[j]) { 114 return false; 115 } 116 } 117 return true; 118 } 119 } 120
