Increase time between wifi stop and wifi start: set to 2 minutes

http://b/issue?id=5629901

Change on state validation:
  - When network state is broadcast in other network information,
    the test activity will record the state change which cause false
    alarm in the test.

Change-Id: I8bd1e8c04ab97116f3a02ccc5543f34a7e651cda

6 files changed, 89 insertions, 79 deletions

diff --git a/core/tests/ConnectivityManagerTest/src/com/android/connectivitymanagertest/ConnectivityManagerStressTestRunner.java b/core/tests/ConnectivityManagerTest/src/com/android/connectivitymanagertest/ConnectivityManagerStressTestRunner.java
index d23dfd3..3ffa085 100644
--- a/core/tests/ConnectivityManagerTest/src/com/android/connectivitymanagertest/ConnectivityManagerStressTestRunner.java
+++ b/core/tests/ConnectivityManagerTest/src/com/android/connectivitymanagertest/ConnectivityManagerStressTestRunner.java
@@ -38,7 +38,8 @@ public class ConnectivityManagerStressTestRunner extends InstrumentationTestRunn
     public int mSoftapIterations = 100;
     public int mScanIterations = 100;
     public int mReconnectIterations = 100;
-    public int mSleepTime = 30 * 1000;  // default sleep time is 30 seconds
+    // sleep time before restart wifi, default is set to 2 minutes
+    public int mSleepTime = 2 * 60 * 1000;
     public String mReconnectSsid = "securenetdhcp";
     public String mReconnectPassword = "androidwifi";
 
diff --git a/core/tests/ConnectivityManagerTest/src/com/android/connectivitymanagertest/ConnectivityManagerTestActivity.java b/core/tests/ConnectivityManagerTest/src/com/android/connectivitymanagertest/ConnectivityManagerTestActivity.java
index adf1883..0580ebc 100644
--- a/core/tests/ConnectivityManagerTest/src/com/android/connectivitymanagertest/ConnectivityManagerTestActivity.java
+++ b/core/tests/ConnectivityManagerTest/src/com/android/connectivitymanagertest/ConnectivityManagerTestActivity.java
@@ -62,6 +62,8 @@ public class ConnectivityManagerTestActivity extends Activity {
     public static final int WIFI_SCAN_TIMEOUT = 50 * 1000;
     public static final int SHORT_TIMEOUT = 5 * 1000;
     public static final long LONG_TIMEOUT = 50 * 1000;
+    // 2 minutes timer between wifi stop and start
+    public static final long  WIFI_STOP_START_INTERVAL = 2 * 60 * 1000;
     public static final int SUCCESS = 0;  // for Wifi tethering state change
     public static final int FAILURE = 1;
     public static final int INIT = -1;
@@ -247,6 +249,8 @@ public class ConnectivityManagerTestActivity extends Activity {
         sleep(SHORT_TIMEOUT);
         removeConfiguredNetworksAndDisableWifi();
         mWifiRegexs = mCM.getTetherableWifiRegexs();
+        // after wifi is shutdown, wait for 2 minute to enable wifi
+        sleep(WIFI_STOP_START_INTERVAL);
      }
 
     public List<WifiConfiguration> loadNetworkConfigurations() throws Exception {
diff --git a/core/tests/ConnectivityManagerTest/src/com/android/connectivitymanagertest/NetworkState.java b/core/tests/ConnectivityManagerTest/src/com/android/connectivitymanagertest/NetworkState.java
index d586396..5a4a2d0 100644
--- a/core/tests/ConnectivityManagerTest/src/com/android/connectivitymanagertest/NetworkState.java
+++ b/core/tests/ConnectivityManagerTest/src/com/android/connectivitymanagertest/NetworkState.java
@@ -77,10 +77,13 @@ public class NetworkState {
                 mReason = "no state is recorded.";
                 return false;
             } else if (mStateDepository.size() > 1) {
-                Log.v(LOG_TAG, "no broadcast is expected, " +
-                        "instead broadcast is probably received");
-                mReason = "no broadcast is expected, instead broadcast is probably received";
-                return false;
+                for (int i = 0; i < mStateDepository.size(); i++) {
+                    if (mStateDepository.get(i) != mTransitionTarget) {
+                        Log.v(LOG_TAG, "state changed.");
+                        mReason = "Unexpected state change";
+                        return false;
+                    }
+                }
             } else if (mStateDepository.get(0) != mTransitionTarget) {
                 Log.v(LOG_TAG, mTransitionTarget + " is expected, but it is " +
                         mStateDepository.get(0));
diff --git a/core/tests/ConnectivityManagerTest/src/com/android/connectivitymanagertest/functional/ConnectivityManagerMobileTest.java b/core/tests/ConnectivityManagerTest/src/com/android/connectivitymanagertest/functional/ConnectivityManagerMobileTest.java
index d9b770a..b1f4bf1 100644
--- a/core/tests/ConnectivityManagerTest/src/com/android/connectivitymanagertest/functional/ConnectivityManagerMobileTest.java
+++ b/core/tests/ConnectivityManagerTest/src/com/android/connectivitymanagertest/functional/ConnectivityManagerMobileTest.java
@@ -66,7 +66,7 @@ public class ConnectivityManagerMobileTest
         // Each test case will start with cellular connection
         if (Settings.System.getInt(getInstrumentation().getContext().getContentResolver(),
                 Settings.System.AIRPLANE_MODE_ON) == 1) {
-            Log.v(LOG_TAG, "airplane is not disabled, disable it.");
+            log("airplane is not disabled, disable it.");
             cmActivity.setAirplaneMode(getInstrumentation().getContext(), false);
         }
         if (!UtilHelper.isWifiOnly()) {
@@ -84,13 +84,13 @@ public class ConnectivityManagerMobileTest
     @Override
     public void tearDown() throws Exception {
         cmActivity.finish();
-        Log.v(LOG_TAG, "tear down ConnectivityManagerTestActivity");
+        log("tear down ConnectivityManagerTestActivity");
         wl.release();
         cmActivity.removeConfiguredNetworksAndDisableWifi();
         // if airplane mode is set, disable it.
         if (Settings.System.getInt(getInstrumentation().getContext().getContentResolver(),
                 Settings.System.AIRPLANE_MODE_ON) == 1) {
-            Log.v(LOG_TAG, "disable airplane mode if it is enabled");
+            log("disable airplane mode if it is enabled");
             cmActivity.setAirplaneMode(getInstrumentation().getContext(), false);
         }
         super.tearDown();
@@ -104,17 +104,24 @@ public class ConnectivityManagerMobileTest
         assertTrue("not connected to cellular network", extraNetInfo.isConnected());
     }
 
+    private void log(String message) {
+        Log.v(LOG_TAG, message);
+    }
+
+    private void sleep(long sleeptime) {
+        try {
+            Thread.sleep(sleeptime);
+        } catch (InterruptedException e) {}
+    }
+
     // Test case 1: Test enabling Wifi without associating with any AP, no broadcast on network
     //              event should be expected.
     @LargeTest
     public void test3GToWifiNotification() {
         // Enable Wi-Fi to avoid initial UNKNOWN state
         cmActivity.enableWifi();
-        try {
-            Thread.sleep(2 * ConnectivityManagerTestActivity.SHORT_TIMEOUT);
-        } catch (Exception e) {
-            Log.v(LOG_TAG, "exception: " + e.toString());
-        }
+        sleep(2 * ConnectivityManagerTestActivity.SHORT_TIMEOUT);
+
         // Wi-Fi is disabled
         cmActivity.disableWifi();
 
@@ -123,11 +130,8 @@ public class ConnectivityManagerMobileTest
         assertTrue(cmActivity.waitForNetworkState(ConnectivityManager.TYPE_MOBILE,
                 State.CONNECTED, ConnectivityManagerTestActivity.LONG_TIMEOUT));
         // Wait for 10 seconds for broadcasts to be sent out
-        try {
-            Thread.sleep(10 * 1000);
-        } catch (Exception e) {
-            fail("thread in sleep is interrupted.");
-        }
+        sleep(10 * 1000);
+
         // As Wifi stays in DISCONNETED, Mobile statys in CONNECTED,
         // the connectivity manager will not broadcast any network connectivity event for Wifi
         NetworkInfo networkInfo = cmActivity.mCM.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
@@ -138,22 +142,18 @@ public class ConnectivityManagerMobileTest
                 NetworkState.DO_NOTHING, State.DISCONNECTED);
         // Eanble Wifi without associating with any AP
         cmActivity.enableWifi();
-        try {
-            Thread.sleep(2 * ConnectivityManagerTestActivity.SHORT_TIMEOUT);
-        } catch (Exception e) {
-            Log.v(LOG_TAG, "exception: " + e.toString());
-        }
+        sleep(2 * ConnectivityManagerTestActivity.SHORT_TIMEOUT);
 
         // validate state and broadcast
         if (!cmActivity.validateNetworkStates(ConnectivityManager.TYPE_WIFI)) {
-            Log.v(LOG_TAG, "the state for WIFI is changed");
-            Log.v(LOG_TAG, "reason: " +
+            log("the state for WIFI is changed");
+            log("reason: " +
                     cmActivity.getTransitionFailureReason(ConnectivityManager.TYPE_WIFI));
             assertTrue("state validation fail", false);
         }
         if (!cmActivity.validateNetworkStates(ConnectivityManager.TYPE_MOBILE)) {
-            Log.v(LOG_TAG, "the state for MOBILE is changed");
-            Log.v(LOG_TAG, "reason: " +
+            log("the state for MOBILE is changed");
+            log("reason: " +
                     cmActivity.getTransitionFailureReason(ConnectivityManager.TYPE_MOBILE));
             assertTrue("state validation fail", false);
         }
@@ -182,7 +182,7 @@ public class ConnectivityManagerMobileTest
 
         assertTrue(cmActivity.waitForWifiState(WifiManager.WIFI_STATE_ENABLED,
                 ConnectivityManagerTestActivity.LONG_TIMEOUT));
-        Log.v(LOG_TAG, "wifi state is enabled");
+        log("wifi state is enabled");
         assertTrue(cmActivity.waitForNetworkState(ConnectivityManager.TYPE_WIFI, State.CONNECTED,
                 ConnectivityManagerTestActivity.LONG_TIMEOUT));
         if (!UtilHelper.isWifiOnly()) {
@@ -192,15 +192,15 @@ public class ConnectivityManagerMobileTest
 
         // validate states
         if (!cmActivity.validateNetworkStates(ConnectivityManager.TYPE_WIFI)) {
-            Log.v(LOG_TAG, "Wifi state transition validation failed.");
-            Log.v(LOG_TAG, "reason: " +
+            log("Wifi state transition validation failed.");
+            log("reason: " +
                     cmActivity.getTransitionFailureReason(ConnectivityManager.TYPE_WIFI));
             assertTrue(false);
         }
         if (!UtilHelper.isWifiOnly()) {
             if (!cmActivity.validateNetworkStates(ConnectivityManager.TYPE_MOBILE)) {
-                Log.v(LOG_TAG, "Mobile state transition validation failed.");
-                Log.v(LOG_TAG, "reason: " +
+                log("Mobile state transition validation failed.");
+                log("reason: " +
                         cmActivity.getTransitionFailureReason(ConnectivityManager.TYPE_MOBILE));
                 assertTrue(false);
             }
@@ -219,16 +219,11 @@ public class ConnectivityManagerMobileTest
         assertTrue(cmActivity.waitForNetworkState(ConnectivityManager.TYPE_WIFI, State.CONNECTED,
                 ConnectivityManagerTestActivity.LONG_TIMEOUT));
 
-        try {
-            Thread.sleep(ConnectivityManagerTestActivity.SHORT_TIMEOUT);
-        } catch (Exception e) {
-            Log.v(LOG_TAG, "exception: " + e.toString());
-        }
-
+        sleep(ConnectivityManagerTestActivity.SHORT_TIMEOUT);
         // Disable Wifi
-        Log.v(LOG_TAG, "Disable Wifi");
+        log("Disable Wifi");
         if (!cmActivity.disableWifi()) {
-            Log.v(LOG_TAG, "disable Wifi failed");
+            log("disable Wifi failed");
             return;
         }
 
@@ -254,8 +249,10 @@ public class ConnectivityManagerMobileTest
         cmActivity.setStateTransitionCriteria(ConnectivityManager.TYPE_WIFI, networkInfo.getState(),
                 NetworkState.TO_CONNECTION, State.CONNECTED);
 
+        // wait for 2 minutes before restart wifi
+        sleep(ConnectivityManagerTestActivity.WIFI_STOP_START_INTERVAL);
         // Enable Wifi again
-        Log.v(LOG_TAG, "Enable Wifi again");
+        log("Enable Wifi again");
         cmActivity.enableWifi();
 
         // Wait for Wifi to be connected and mobile to be disconnected
@@ -268,8 +265,8 @@ public class ConnectivityManagerMobileTest
 
         // validate wifi states
         if (!cmActivity.validateNetworkStates(ConnectivityManager.TYPE_WIFI)) {
-            Log.v(LOG_TAG, "Wifi state transition validation failed.");
-            Log.v(LOG_TAG, "reason: " +
+            log("Wifi state transition validation failed.");
+            log("reason: " +
                     cmActivity.getTransitionFailureReason(ConnectivityManager.TYPE_WIFI));
             assertTrue(false);
         }
@@ -288,11 +285,7 @@ public class ConnectivityManagerMobileTest
             ConnectivityManagerTestActivity.LONG_TIMEOUT));
 
         // Wait for a few seconds to avoid the state that both Mobile and Wifi is connected
-        try {
-            Thread.sleep(ConnectivityManagerTestActivity.SHORT_TIMEOUT);
-        } catch (Exception e) {
-            Log.v(LOG_TAG, "exception: " + e.toString());
-        }
+        sleep(ConnectivityManagerTestActivity.SHORT_TIMEOUT);
 
         NetworkInfo networkInfo;
         if (!UtilHelper.isWifiOnly()) {
@@ -318,15 +311,15 @@ public class ConnectivityManagerMobileTest
 
         // validate states
         if (!cmActivity.validateNetworkStates(ConnectivityManager.TYPE_WIFI)) {
-            Log.v(LOG_TAG, "Wifi state transition validation failed.");
-            Log.v(LOG_TAG, "reason: " +
+            log("Wifi state transition validation failed.");
+            log("reason: " +
                     cmActivity.getTransitionFailureReason(ConnectivityManager.TYPE_WIFI));
             assertTrue(false);
         }
         if (!UtilHelper.isWifiOnly()) {
             if (!cmActivity.validateNetworkStates(ConnectivityManager.TYPE_MOBILE)) {
-                Log.v(LOG_TAG, "Mobile state transition validation failed.");
-                Log.v(LOG_TAG, "reason: " +
+                log("Mobile state transition validation failed.");
+                log("reason: " +
                         cmActivity.getTransitionFailureReason(ConnectivityManager.TYPE_MOBILE));
                 assertTrue(false);
             }
@@ -346,19 +339,16 @@ public class ConnectivityManagerMobileTest
         assertEquals(State.DISCONNECTED, networkInfo.getState());
 
         // Enable airplane mode
+        log("Enable airplane mode");
         cmActivity.setAirplaneMode(getInstrumentation().getContext(), true);
-        try {
-            Thread.sleep(ConnectivityManagerTestActivity.SHORT_TIMEOUT);
-        } catch (Exception e) {
-            Log.v(LOG_TAG, "exception: " + e.toString());
-        }
+        sleep(ConnectivityManagerTestActivity.SHORT_TIMEOUT);
 
         networkInfo = cmActivity.mCM.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
         assertEquals(State.DISCONNECTED, networkInfo.getState());
 
         if (!cmActivity.validateNetworkStates(ConnectivityManager.TYPE_MOBILE)) {
-            Log.v(LOG_TAG, "Mobile state transition validation failed.");
-            Log.v(LOG_TAG, "reason: " +
+            log("Mobile state transition validation failed.");
+            log("reason: " +
                     cmActivity.getTransitionFailureReason(ConnectivityManager.TYPE_MOBILE));
             assertTrue(false);
         }
@@ -381,14 +371,14 @@ public class ConnectivityManagerMobileTest
 
         // Validate the state transition
         if (!cmActivity.validateNetworkStates(ConnectivityManager.TYPE_MOBILE)) {
-            Log.v(LOG_TAG, "Mobile state transition validation failed.");
-            Log.v(LOG_TAG, "reason: " +
+            log("Mobile state transition validation failed.");
+            log("reason: " +
                     cmActivity.getTransitionFailureReason(ConnectivityManager.TYPE_MOBILE));
             assertTrue(false);
         }
         if (!cmActivity.validateNetworkStates(ConnectivityManager.TYPE_WIFI)) {
-          Log.v(LOG_TAG, "Wifi state transition validation failed.");
-          Log.v(LOG_TAG, "reason: " +
+          log("Wifi state transition validation failed.");
+          log("reason: " +
                   cmActivity.getTransitionFailureReason(ConnectivityManager.TYPE_WIFI));
           assertTrue(false);
         }
@@ -399,6 +389,7 @@ public class ConnectivityManagerMobileTest
     public void testDataConnectionOverAMWithWifi() {
         assertNotNull("SSID is null", TEST_ACCESS_POINT);
         // Eanble airplane mode
+        log("Enable airplane mode");
         cmActivity.setAirplaneMode(getInstrumentation().getContext(), true);
 
         NetworkInfo networkInfo;
@@ -423,15 +414,15 @@ public class ConnectivityManagerMobileTest
 
         // validate state and broadcast
         if (!cmActivity.validateNetworkStates(ConnectivityManager.TYPE_WIFI)) {
-            Log.v(LOG_TAG, "state validate for Wifi failed");
-            Log.v(LOG_TAG, "reason: " +
+            log("state validate for Wifi failed");
+            log("reason: " +
                     cmActivity.getTransitionFailureReason(ConnectivityManager.TYPE_WIFI));
             assertTrue("State validation failed", false);
         }
         if (!UtilHelper.isWifiOnly()) {
             if (!cmActivity.validateNetworkStates(ConnectivityManager.TYPE_MOBILE)) {
-                Log.v(LOG_TAG, "state validation for Mobile failed");
-                Log.v(LOG_TAG, "reason: " +
+                log("state validation for Mobile failed");
+                log("reason: " +
                         cmActivity.getTransitionFailureReason(ConnectivityManager.TYPE_MOBILE));
                 assertTrue("state validation failed", false);
             }
@@ -454,7 +445,7 @@ public class ConnectivityManagerMobileTest
         try {
             Thread.sleep(ConnectivityManagerTestActivity.SHORT_TIMEOUT);
         } catch (Exception e) {
-            Log.v(LOG_TAG, "exception: " + e.toString());
+            log("exception: " + e.toString());
         }
 
         // Enable airplane mode without clearing Wifi
@@ -466,7 +457,7 @@ public class ConnectivityManagerMobileTest
         try {
             Thread.sleep(ConnectivityManagerTestActivity.SHORT_TIMEOUT);
         } catch (Exception e) {
-            Log.v(LOG_TAG, "exception: " + e.toString());
+            log("exception: " + e.toString());
         }
 
         // Prepare for state validation
@@ -487,8 +478,8 @@ public class ConnectivityManagerMobileTest
 
         // validate the state transition
         if (!cmActivity.validateNetworkStates(ConnectivityManager.TYPE_WIFI)) {
-            Log.v(LOG_TAG, "Wifi state transition validation failed.");
-            Log.v(LOG_TAG, "reason: " +
+            log("Wifi state transition validation failed.");
+            log("reason: " +
                     cmActivity.getTransitionFailureReason(ConnectivityManager.TYPE_WIFI));
             assertTrue(false);
         }
@@ -511,13 +502,13 @@ public class ConnectivityManagerMobileTest
         try {
             Thread.sleep(ConnectivityManagerTestActivity.SHORT_TIMEOUT);
         } catch (Exception e) {
-            Log.v(LOG_TAG, "exception: " + e.toString());
+            log("exception: " + e.toString());
         }
 
         // Disconnect from the current AP
-        Log.v(LOG_TAG, "disconnect from the AP");
+        log("disconnect from the AP");
         if (!cmActivity.disconnectAP()) {
-            Log.v(LOG_TAG, "failed to disconnect from " + TEST_ACCESS_POINT);
+            log("failed to disconnect from " + TEST_ACCESS_POINT);
         }
 
         // Verify the connectivity state for Wifi is DISCONNECTED
@@ -525,7 +516,7 @@ public class ConnectivityManagerMobileTest
                 ConnectivityManagerTestActivity.LONG_TIMEOUT));
 
         if (!cmActivity.disableWifi()) {
-            Log.v(LOG_TAG, "disable Wifi failed");
+            log("disable Wifi failed");
             return;
         }
         assertTrue(cmActivity.waitForWifiState(WifiManager.WIFI_STATE_DISABLED,
diff --git a/core/tests/ConnectivityManagerTest/src/com/android/connectivitymanagertest/functional/WifiConnectionTest.java b/core/tests/ConnectivityManagerTest/src/com/android/connectivitymanagertest/functional/WifiConnectionTest.java
index 22b1759..ee1ade2 100644
--- a/core/tests/ConnectivityManagerTest/src/com/android/connectivitymanagertest/functional/WifiConnectionTest.java
+++ b/core/tests/ConnectivityManagerTest/src/com/android/connectivitymanagertest/functional/WifiConnectionTest.java
@@ -136,7 +136,7 @@ public class WifiConnectionTest
 
         // step 2: verify Wifi state and network state;
         assertTrue(mAct.waitForNetworkState(ConnectivityManager.TYPE_WIFI,
-                State.CONNECTED, 2 * ConnectivityManagerTestActivity.LONG_TIMEOUT));
+                State.CONNECTED, 6 * ConnectivityManagerTestActivity.LONG_TIMEOUT));
 
         // step 3: verify the current connected network is the given SSID
         assertNotNull("Wifi connection returns null", mAct.mWifiManager.getConnectionInfo());
@@ -166,8 +166,9 @@ public class WifiConnectionTest
             String ssid = networks.get(i).SSID;
             log("-- START Wi-Fi connection test to : " + ssid + " --");
             connectToWifi(networks.get(i));
-            sleep(2 * ConnectivityManagerTestActivity.SHORT_TIMEOUT,
-                    "interruped while waiting for wifi disabled.");
+            // wait for 2 minutes between wifi stop and start
+            sleep(ConnectivityManagerTestActivity.WIFI_START_TIMER,
+                  "interruped while connected to wifi");
             log("-- END Wi-Fi connection test to " + ssid + " -- ");
         }
     }
diff --git a/core/tests/ConnectivityManagerTest/src/com/android/connectivitymanagertest/stress/WifiStressTest.java b/core/tests/ConnectivityManagerTest/src/com/android/connectivitymanagertest/stress/WifiStressTest.java
index 7578e67..0b32fde 100644
--- a/core/tests/ConnectivityManagerTest/src/com/android/connectivitymanagertest/stress/WifiStressTest.java
+++ b/core/tests/ConnectivityManagerTest/src/com/android/connectivitymanagertest/stress/WifiStressTest.java
@@ -92,6 +92,9 @@ public class WifiStressTest
         mPassword = mRunner.mReconnectPassword;
         mScanIterations = mRunner.mScanIterations;
         mWifiSleepTime = mRunner.mSleepTime;
+        log(String.format("mReconnectIterations(%d), mSsid(%s), mPassword(%s),"
+            + "mScanIterations(%d), mWifiSleepTime(%d)", mReconnectIterations, mSsid,
+            mPassword, mScanIterations, mWifiSleepTime));
         mOutputWriter = new BufferedWriter(new FileWriter(new File(
                 Environment.getExternalStorageDirectory(), OUTPUT_FILE), true));
         mAct.turnScreenOn();
@@ -248,6 +251,7 @@ public class WifiStressTest
         assertTrue("Wi-Fi is connected, but no data connection.", mAct.pingTest(null));
 
         int i;
+        long sum = 0;
         for (i = 0; i < mReconnectIterations; i++) {
             // 1. Put device into sleep mode
             // 2. Wait for the device to sleep for sometime, verify wi-fi is off and mobile is on.
@@ -284,12 +288,18 @@ public class WifiStressTest
 
             // Turn screen on again
             mAct.turnScreenOn();
+            // Measure the time for Wi-Fi to get connected
+            long startTime = System.currentTimeMillis();
             assertTrue("Wait for Wi-Fi enable timeout after wake up",
                     mAct.waitForWifiState(WifiManager.WIFI_STATE_ENABLED,
                     ConnectivityManagerTestActivity.SHORT_TIMEOUT));
             assertTrue("Wait for Wi-Fi connection timeout after wake up",
                     mAct.waitForNetworkState(ConnectivityManager.TYPE_WIFI, State.CONNECTED,
-                    ConnectivityManagerTestActivity.LONG_TIMEOUT));
+                    6 * ConnectivityManagerTestActivity.LONG_TIMEOUT));
+            long connectionTime = System.currentTimeMillis() - startTime;
+            sum += connectionTime;
+            log("average reconnection time is: " + sum/(i+1));
+
             assertTrue("Reconnect to Wi-Fi network, but no data connection.", mAct.pingTest(null));
         }
         if (i == mReconnectIterations) {