WifiStressTest.java revision 3272a38dbc5fdf2d68b653592a244059cd29255a
1/* 2 * Copyright (C) 2010, 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 com.android.connectivitymanagertest.stress; 18 19import android.content.Context; 20import android.net.ConnectivityManager; 21import android.net.NetworkInfo.State; 22import android.net.wifi.ScanResult; 23import android.net.wifi.WifiConfiguration; 24import android.net.wifi.WifiConfiguration.IpAssignment; 25import android.net.wifi.WifiConfiguration.KeyMgmt; 26import android.net.wifi.WifiConfiguration.ProxySettings; 27import android.net.wifi.WifiManager; 28import android.os.Environment; 29import android.os.PowerManager; 30import android.provider.Settings; 31import android.test.ActivityInstrumentationTestCase2; 32import android.test.suitebuilder.annotation.LargeTest; 33import android.util.Log; 34 35import com.android.connectivitymanagertest.ConnectivityManagerStressTestRunner; 36import com.android.connectivitymanagertest.ConnectivityManagerTestActivity; 37 38import java.io.BufferedWriter; 39import java.io.File; 40import java.io.FileWriter; 41import java.io.IOException; 42import java.util.List; 43 44/** 45 * Stress Wi-Fi connection, scanning and reconnection after sleep. 46 * 47 * To run this stress test suite, type 48 * adb shell am instrument -e class com.android.connectivitymanagertest.stress.WifiStressTest 49 * -w com.android.connectivitymanagertest/.ConnectivityManagerStressTestRunner 50 */ 51public class WifiStressTest 52 extends ActivityInstrumentationTestCase2<ConnectivityManagerTestActivity> { 53 private final static String TAG = "WifiStressTest"; 54 55 /** 56 * Wi-Fi idle time for default sleep policy 57 */ 58 private final static long WIFI_IDLE_MS = 60 * 1000; 59 60 /** 61 * Delay after issuing wifi shutdown. 62 * The framework keep driver up for at leat 2 minutes to avoid problems 63 * that a quick shutdown could cause on wext driver and protentially 64 * on cfg based driver 65 */ 66 private final static long WIFI_SHUTDOWN_DELAY = 2 * 60 * 1000; 67 68 private final static String OUTPUT_FILE = "WifiStressTestOutput.txt"; 69 private ConnectivityManagerTestActivity mAct; 70 private int mReconnectIterations; 71 private int mWifiSleepTime; 72 private int mScanIterations; 73 private String mSsid; 74 private String mPassword; 75 private ConnectivityManagerStressTestRunner mRunner; 76 private BufferedWriter mOutputWriter = null; 77 private boolean mWifiOnlyFlag; 78 79 public WifiStressTest() { 80 super(ConnectivityManagerTestActivity.class); 81 } 82 83 @Override 84 public void setUp() throws Exception { 85 super.setUp(); 86 87 mAct = getActivity(); 88 mRunner = (ConnectivityManagerStressTestRunner) getInstrumentation(); 89 mReconnectIterations = mRunner.mReconnectIterations; 90 mSsid = mRunner.mReconnectSsid; 91 mPassword = mRunner.mReconnectPassword; 92 mScanIterations = mRunner.mScanIterations; 93 mWifiSleepTime = mRunner.mSleepTime; 94 mWifiOnlyFlag = mRunner.mWifiOnlyFlag; 95 log(String.format("mReconnectIterations(%d), mSsid(%s), mPassword(%s)," 96 + "mScanIterations(%d), mWifiSleepTime(%d)", mReconnectIterations, mSsid, 97 mPassword, mScanIterations, mWifiSleepTime)); 98 mOutputWriter = new BufferedWriter(new FileWriter(new File( 99 Environment.getExternalStorageDirectory(), OUTPUT_FILE), true)); 100 mAct.turnScreenOn(); 101 if (!mAct.mWifiManager.isWifiEnabled()) { 102 log("Enable wi-fi before stress tests."); 103 if (!mAct.enableWifi()) { 104 tearDown(); 105 fail("enable wifi failed."); 106 } 107 sleep(ConnectivityManagerTestActivity.SHORT_TIMEOUT, 108 "Interruped while waiting for wifi on"); 109 } 110 } 111 112 @Override 113 public void tearDown() throws Exception { 114 log("tearDown()"); 115 if (mOutputWriter != null) { 116 mOutputWriter.close(); 117 } 118 super.tearDown(); 119 } 120 121 private void writeOutput(String s) { 122 log("write message: " + s); 123 if (mOutputWriter == null) { 124 log("no writer attached to file " + OUTPUT_FILE); 125 return; 126 } 127 try { 128 mOutputWriter.write(s + "\n"); 129 mOutputWriter.flush(); 130 } catch (IOException e) { 131 log("failed to write output."); 132 } 133 } 134 135 public void log(String message) { 136 Log.v(TAG, message); 137 } 138 139 private void sleep(long sometime, String errorMsg) { 140 try { 141 Thread.sleep(sometime); 142 } catch (InterruptedException e) { 143 fail(errorMsg); 144 } 145 } 146 147 /** 148 * Stress Wifi Scanning 149 * TODO: test the scanning quality for each frequency band 150 */ 151 @LargeTest 152 public void testWifiScanning() { 153 int scanTimeSum = 0; 154 int i; 155 int ssidAppearInScanResultsCount = 0; // count times of given ssid appear in scan results. 156 for (i = 0; i < mScanIterations; i++) { 157 log("testWifiScanning: iteration: " + i); 158 int averageScanTime = 0; 159 if (i > 0) { 160 averageScanTime = scanTimeSum/i; 161 } 162 writeOutput(String.format("iteration %d out of %d", 163 i, mScanIterations)); 164 writeOutput(String.format("average scanning time is %d", averageScanTime)); 165 writeOutput(String.format("ssid appear %d out of %d scan iterations", 166 ssidAppearInScanResultsCount, i)); 167 long startTime = System.currentTimeMillis(); 168 mAct.scanResultAvailable = false; 169 assertTrue("start scan failed", mAct.mWifiManager.startScanActive()); 170 while (true) { 171 if ((System.currentTimeMillis() - startTime) > 172 ConnectivityManagerTestActivity.WIFI_SCAN_TIMEOUT) { 173 fail("Wifi scanning takes more than " + 174 ConnectivityManagerTestActivity.WIFI_SCAN_TIMEOUT + " ms"); 175 } 176 synchronized(mAct) { 177 try { 178 mAct.wait(ConnectivityManagerTestActivity.WAIT_FOR_SCAN_RESULT); 179 } catch (InterruptedException e) { 180 e.printStackTrace(); 181 } 182 if (mAct.scanResultAvailable) { 183 long scanTime = (System.currentTimeMillis() - startTime); 184 scanTimeSum += scanTime; 185 break; 186 } 187 } 188 } 189 if ((mAct.mWifiManager.getScanResults() == null) || 190 (mAct.mWifiManager.getScanResults().size() <= 0)) { 191 fail("Scan results are empty "); 192 } 193 194 List<ScanResult> netList = mAct.mWifiManager.getScanResults(); 195 if (netList != null) { 196 log("size of scan result list: " + netList.size()); 197 for (int s = 0; s < netList.size(); s++) { 198 ScanResult sr= netList.get(s); 199 log(String.format("scan result for %s is: %s", sr.SSID, sr.toString())); 200 log(String.format("signal level for %s is %d ", sr.SSID, sr.level)); 201 if (sr.SSID.equals(mSsid)) { 202 ssidAppearInScanResultsCount += 1; 203 log("Number of times " + mSsid + " appear in the scan list: " + 204 ssidAppearInScanResultsCount); 205 break; 206 } 207 } 208 } 209 } 210 if (i == mScanIterations) { 211 writeOutput(String.format("iteration %d out of %d", 212 i, mScanIterations)); 213 writeOutput(String.format("average scanning time is %d", scanTimeSum/mScanIterations)); 214 writeOutput(String.format("ssid appear %d out of %d scan iterations", 215 ssidAppearInScanResultsCount, mScanIterations)); 216 } 217 } 218 219 // Stress Wifi reconnection to secure net after sleep 220 @LargeTest 221 public void testWifiReconnectionAfterSleep() { 222 int value = Settings.Global.getInt(mRunner.getContext().getContentResolver(), 223 Settings.Global.WIFI_SLEEP_POLICY, -1); 224 log("wifi sleep policy is: " + value); 225 if (value != Settings.Global.WIFI_SLEEP_POLICY_DEFAULT) { 226 Settings.Global.putInt(mRunner.getContext().getContentResolver(), 227 Settings.Global.WIFI_SLEEP_POLICY, Settings.Global.WIFI_SLEEP_POLICY_DEFAULT); 228 log("set wifi sleep policy to default value"); 229 } 230 Settings.Global.putLong(mRunner.getContext().getContentResolver(), 231 Settings.Global.WIFI_IDLE_MS, WIFI_IDLE_MS); 232 233 // Connect to a Wi-Fi network 234 WifiConfiguration config = new WifiConfiguration(); 235 config.SSID = mSsid; 236 config.allowedKeyManagement.set(KeyMgmt.WPA_PSK); 237 if (mPassword.matches("[0-9A-Fa-f]{64}")) { 238 config.preSharedKey = mPassword; 239 } else { 240 config.preSharedKey = '"' + mPassword + '"'; 241 } 242 config.ipAssignment = IpAssignment.DHCP; 243 config.proxySettings = ProxySettings.NONE; 244 245 assertTrue("Failed to connect to Wi-Fi network: " + mSsid, 246 mAct.connectToWifiWithConfiguration(config)); 247 assertTrue(mAct.waitForWifiState(WifiManager.WIFI_STATE_ENABLED, 248 ConnectivityManagerTestActivity.SHORT_TIMEOUT)); 249 assertTrue(mAct.waitForNetworkState(ConnectivityManager.TYPE_WIFI, State.CONNECTED, 250 ConnectivityManagerTestActivity.LONG_TIMEOUT)); 251 // Run ping test to verify the data connection 252 assertTrue("Wi-Fi is connected, but no data connection.", mAct.pingTest(null)); 253 254 int i; 255 long sum = 0; 256 for (i = 0; i < mReconnectIterations; i++) { 257 // 1. Put device into sleep mode 258 // 2. Wait for the device to sleep for sometime, verify wi-fi is off and mobile is on. 259 // 3. Maintain the sleep mode for some time, 260 // 4. Verify the Wi-Fi is still off, and data is on 261 // 5. Wake up the device, verify Wi-Fi is enabled and connected. 262 writeOutput(String.format("iteration %d out of %d", 263 i, mReconnectIterations)); 264 log("iteration: " + i); 265 mAct.turnScreenOff(); 266 PowerManager pm = 267 (PowerManager)mRunner.getContext().getSystemService(Context.POWER_SERVICE); 268 assertFalse(pm.isScreenOn()); 269 sleep(WIFI_IDLE_MS + WIFI_SHUTDOWN_DELAY, "Interruped while wait for wifi to be idle"); 270 assertTrue("Wait for Wi-Fi to idle timeout", 271 mAct.waitForNetworkState(ConnectivityManager.TYPE_WIFI, State.DISCONNECTED, 272 6 * ConnectivityManagerTestActivity.SHORT_TIMEOUT)); 273 if (!mWifiOnlyFlag) { 274 // use long timeout as the pppd startup may take several retries. 275 assertTrue("Wait for cellular connection timeout", 276 mAct.waitForNetworkState(ConnectivityManager.TYPE_MOBILE, State.CONNECTED, 277 2 * ConnectivityManagerTestActivity.LONG_TIMEOUT)); 278 } 279 sleep(mWifiSleepTime, "Interrupted while device is in sleep mode"); 280 // Verify the wi-fi is still off and data connection is on 281 assertEquals("Wi-Fi is reconnected", State.DISCONNECTED, 282 mAct.mCM.getNetworkInfo(ConnectivityManager.TYPE_WIFI).getState()); 283 284 if (!mWifiOnlyFlag) { 285 assertEquals("Cellular connection is down", State.CONNECTED, 286 mAct.mCM.getNetworkInfo(ConnectivityManager.TYPE_MOBILE).getState()); 287 assertTrue("Mobile is connected, but no data connection.", mAct.pingTest(null)); 288 } 289 290 // Turn screen on again 291 mAct.turnScreenOn(); 292 // Measure the time for Wi-Fi to get connected 293 long startTime = System.currentTimeMillis(); 294 assertTrue("Wait for Wi-Fi enable timeout after wake up", 295 mAct.waitForWifiState(WifiManager.WIFI_STATE_ENABLED, 296 ConnectivityManagerTestActivity.SHORT_TIMEOUT)); 297 assertTrue("Wait for Wi-Fi connection timeout after wake up", 298 mAct.waitForNetworkState(ConnectivityManager.TYPE_WIFI, State.CONNECTED, 299 6 * ConnectivityManagerTestActivity.LONG_TIMEOUT)); 300 long connectionTime = System.currentTimeMillis() - startTime; 301 sum += connectionTime; 302 log("average reconnection time is: " + sum/(i+1)); 303 304 assertTrue("Reconnect to Wi-Fi network, but no data connection.", mAct.pingTest(null)); 305 } 306 if (i == mReconnectIterations) { 307 writeOutput(String.format("iteration %d out of %d", 308 i, mReconnectIterations)); 309 } 310 } 311} 312