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 
17 package com.android.documentsui;
18 
19 import android.app.Activity;
20 import android.app.ActivityManager;
21 import android.content.Context;
22 import android.content.Intent;
23 import android.content.pm.PackageManager;
24 import android.content.pm.ResolveInfo;
25 import android.os.Bundle;
26 import android.provider.DocumentsContract;
27 import android.support.test.uiautomator.UiDevice;
28 import android.test.InstrumentationTestCase;
29 import android.test.suitebuilder.annotation.LargeTest;
30 
31 import androidx.test.InstrumentationRegistry;
32 import androidx.test.runner.AndroidJUnit4;
33 
34 import org.junit.BeforeClass;
35 import org.junit.Test;
36 import org.junit.runner.RunWith;
37 
38 import java.util.Arrays;
39 import java.util.List;
40 import java.util.concurrent.CountDownLatch;
41 
42 @RunWith(AndroidJUnit4.class)
43 public class FilesAppPerfTest {
44 
45     // Keys used to report metrics to APCT.
46     private static final String KEY_FILES_COLD_START_PERFORMANCE_MEDIAN =
47             "files-cold-start-performance-median";
48     private static final String KEY_FILES_WARM_START_PERFORMANCE_MEDIAN =
49             "files-warm-start-performance-median";
50 
51     private static final String TARGET_PACKAGE = "com.android.documentsui";
52 
53     private static final int NUM_MEASUREMENTS = 10;
54 
55     private LauncherActivity mActivity;
56     private static UiDevice mDevice;
57 
58     @BeforeClass
setUp()59     public static void setUp() {
60         mDevice = UiDevice.getInstance(InstrumentationRegistry.getInstrumentation());
61     }
62 
63     @Test
testFilesColdStartPerformance()64     public void testFilesColdStartPerformance() throws Exception {
65         runFilesStartPerformanceTest(true);
66     }
67 
68     @Test
testFilesWarmStartPerformance()69     public void testFilesWarmStartPerformance() throws Exception {
70         runFilesStartPerformanceTest(false);
71     }
72 
runFilesStartPerformanceTest(boolean cold)73     public void runFilesStartPerformanceTest(boolean cold) throws Exception {
74         long[] measurements = new long[NUM_MEASUREMENTS];
75         for (int i = 0; i < NUM_MEASUREMENTS; i++) {
76             if (cold) {
77                 // Kill all providers, as well as DocumentsUI to measure a cold start.
78                 killProviders();
79                 mDevice.executeShellCommand("am force-stop " + TARGET_PACKAGE);
80             }
81             mDevice.waitForIdle();
82 
83             LauncherActivity.testCaseLatch = new CountDownLatch(1);
84             mActivity = launchActivity(
85                     InstrumentationRegistry.getInstrumentation().getTargetContext()
86                             .getPackageName(),
87                     LauncherActivity.class, null);
88             LauncherActivity.testCaseLatch.await();
89             measurements[i] = LauncherActivity.measurement;
90         }
91 
92         reportMetrics(cold ? KEY_FILES_COLD_START_PERFORMANCE_MEDIAN
93                 : KEY_FILES_WARM_START_PERFORMANCE_MEDIAN, measurements);
94     }
95 
reportMetrics(String key, long[] measurements)96     private void reportMetrics(String key, long[] measurements) {
97         final Bundle status = new Bundle();
98         Arrays.sort(measurements);
99         final long median = measurements[NUM_MEASUREMENTS / 2 - 1];
100         status.putDouble(key, median);
101 
102         InstrumentationRegistry.getInstrumentation().sendStatus(Activity.RESULT_OK, status);
103     }
104 
killProviders()105     private void killProviders() throws Exception {
106         final Context context = InstrumentationRegistry.getInstrumentation().getContext();
107         final PackageManager pm = context.getPackageManager();
108         final ActivityManager am = (ActivityManager) context.getSystemService(
109                 Context.ACTIVITY_SERVICE);
110         final Intent intent = new Intent(DocumentsContract.PROVIDER_INTERFACE);
111         final List<ResolveInfo> providers = pm.queryIntentContentProviders(intent, 0);
112         for (ResolveInfo info : providers) {
113             final String packageName = info.providerInfo.packageName;
114             am.killBackgroundProcesses(packageName);
115         }
116     }
117 
launchActivity( String pkg, Class<T> activityCls, Bundle extras)118     private final <T extends Activity> T launchActivity(
119             String pkg,
120             Class<T> activityCls,
121             Bundle extras) {
122         Intent intent = new Intent(Intent.ACTION_MAIN);
123         if (extras != null) {
124             intent.putExtras(extras);
125         }
126         return launchActivityWithIntent(pkg, activityCls, intent);
127     }
128 
launchActivityWithIntent( String pkg, Class<T> activityCls, Intent intent)129     private final <T extends Activity> T launchActivityWithIntent(
130             String pkg,
131             Class<T> activityCls,
132             Intent intent) {
133         intent.setClassName(pkg, activityCls.getName());
134         intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
135         T activity = (T) InstrumentationRegistry.getInstrumentation().startActivitySync(intent);
136         InstrumentationRegistry.getInstrumentation().waitForIdleSync();
137         return activity;
138     }
139 }
140