tests/net/java/com/android/server/connectivity/NetworkNotificationManagerTest.java - platform/packages/modules/Connectivity - Git at Google

 /*
  * Copyright (C) 2016 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 package com.android.server.connectivity;

 import static com.android.server.connectivity.NetworkNotificationManager.NotificationType.*;

 import static org.mockito.Mockito.any;
 import static org.mockito.Mockito.anyInt;
 import static org.mockito.Mockito.clearInvocations;
 import static org.mockito.Mockito.doReturn;
 import static org.mockito.Mockito.eq;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.never;
 import static org.mockito.Mockito.reset;
 import static org.mockito.Mockito.times;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;

 import android.app.Notification;
 import android.app.NotificationManager;
 import android.content.Context;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageManager;
 import android.content.res.Resources;
 import android.net.ConnectivityResources;
 import android.net.NetworkCapabilities;
 import android.net.NetworkInfo;
 import android.os.UserHandle;
 import android.telephony.TelephonyManager;

 import androidx.test.filters.SmallTest;
 import androidx.test.runner.AndroidJUnit4;

 import com.android.connectivity.resources.R;
 import com.android.server.connectivity.NetworkNotificationManager.NotificationType;

 import org.junit.After;
 import org.junit.AfterClass;
 import org.junit.Before;
 import org.junit.BeforeClass;
 import org.junit.Ignore;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.mockito.AdditionalAnswers;
 import org.mockito.ArgumentCaptor;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;

 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;

 @RunWith(AndroidJUnit4.class)
 @SmallTest
 public class NetworkNotificationManagerTest {

     private static final String TEST_SSID = "Test SSID";
     private static final String TEST_EXTRA_INFO = "extra";
     static final NetworkCapabilities CELL_CAPABILITIES = new NetworkCapabilities();
     static final NetworkCapabilities WIFI_CAPABILITIES = new NetworkCapabilities();
     static final NetworkCapabilities VPN_CAPABILITIES = new NetworkCapabilities();
     static {
         CELL_CAPABILITIES.addTransportType(NetworkCapabilities.TRANSPORT_CELLULAR);
         CELL_CAPABILITIES.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET);

         WIFI_CAPABILITIES.addTransportType(NetworkCapabilities.TRANSPORT_WIFI);
         WIFI_CAPABILITIES.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET);
         WIFI_CAPABILITIES.setSSID(TEST_SSID);

         // Set the underyling network to wifi.
         VPN_CAPABILITIES.addTransportType(NetworkCapabilities.TRANSPORT_WIFI);
         VPN_CAPABILITIES.addTransportType(NetworkCapabilities.TRANSPORT_VPN);
         VPN_CAPABILITIES.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET);
         VPN_CAPABILITIES.removeCapability(NetworkCapabilities.NET_CAPABILITY_NOT_VPN);
     }

     @Mock Context mCtx;
     @Mock Resources mResources;
     @Mock PackageManager mPm;
     @Mock TelephonyManager mTelephonyManager;
     @Mock NotificationManager mNotificationManager;
     @Mock NetworkAgentInfo mWifiNai;
     @Mock NetworkAgentInfo mCellNai;
     @Mock NetworkAgentInfo mVpnNai;
     @Mock NetworkInfo mNetworkInfo;
     ArgumentCaptor<Notification> mCaptor;

     NetworkNotificationManager mManager;

     @Before
     public void setUp() {
         MockitoAnnotations.initMocks(this);
         mCaptor = ArgumentCaptor.forClass(Notification.class);
         mWifiNai.networkCapabilities = WIFI_CAPABILITIES;
         mWifiNai.networkInfo = mNetworkInfo;
         mCellNai.networkCapabilities = CELL_CAPABILITIES;
         mCellNai.networkInfo = mNetworkInfo;
         mVpnNai.networkCapabilities = VPN_CAPABILITIES;
         mVpnNai.networkInfo = mNetworkInfo;
         doReturn(true).when(mVpnNai).isVPN();
         when(mCtx.getResources()).thenReturn(mResources);
         when(mCtx.getPackageManager()).thenReturn(mPm);
         when(mCtx.getApplicationInfo()).thenReturn(new ApplicationInfo());
         final Context asUserCtx = mock(Context.class, AdditionalAnswers.delegatesTo(mCtx));
         doReturn(UserHandle.ALL).when(asUserCtx).getUser();
         when(mCtx.createContextAsUser(eq(UserHandle.ALL), anyInt())).thenReturn(asUserCtx);
         when(mCtx.getSystemService(eq(Context.NOTIFICATION_SERVICE)))
                 .thenReturn(mNotificationManager);
         when(mNetworkInfo.getExtraInfo()).thenReturn(TEST_EXTRA_INFO);
         ConnectivityResources.setResourcesContextForTest(mCtx);
         when(mResources.getColor(anyInt(), any())).thenReturn(0xFF607D8B);

         // Come up with some credible-looking transport names. The actual values do not matter.
         String[] transportNames = new String[NetworkCapabilities.MAX_TRANSPORT + 1];
         for (int transport = 0; transport <= NetworkCapabilities.MAX_TRANSPORT; transport++) {
             transportNames[transport] = NetworkCapabilities.transportNameOf(transport);
         }
         when(mResources.getStringArray(R.array.network_switch_type_name))
             .thenReturn(transportNames);

         mManager = new NetworkNotificationManager(mCtx, mTelephonyManager);
     }

     @After
     public void tearDown() {
         ConnectivityResources.setResourcesContextForTest(null);
     }

     private void verifyTitleByNetwork(final int id, final NetworkAgentInfo nai, final int title) {
         final String tag = NetworkNotificationManager.tagFor(id);
         mManager.showNotification(id, PRIVATE_DNS_BROKEN, nai, null, null, true);
         verify(mNotificationManager, times(1))
                 .notify(eq(tag), eq(PRIVATE_DNS_BROKEN.eventId), any());
         final int transportType = NetworkNotificationManager.approximateTransportType(nai);
         if (transportType == NetworkCapabilities.TRANSPORT_WIFI) {
             verify(mResources, times(1)).getString(eq(title), eq(TEST_EXTRA_INFO));
         } else {
             verify(mResources, times(1)).getString(title);
         }
         verify(mResources, times(1)).getString(eq(R.string.private_dns_broken_detailed));
     }

     @Test
     public void testTitleOfPrivateDnsBroken() {
         // Test the title of mobile data.
         verifyTitleByNetwork(100, mCellNai, R.string.mobile_no_internet);
         clearInvocations(mResources);

         // Test the title of wifi.
         verifyTitleByNetwork(101, mWifiNai, R.string.wifi_no_internet);
         clearInvocations(mResources);

         // Test the title of other networks.
         verifyTitleByNetwork(102, mVpnNai, R.string.other_networks_no_internet);
         clearInvocations(mResources);
     }

     @Test
     public void testNotificationsShownAndCleared() {
         final int NETWORK_ID_BASE = 100;
         List<NotificationType> types = Arrays.asList(NotificationType.values());
         List<Integer> ids = new ArrayList<>(types.size());
         for (int i = 0; i < types.size(); i++) {
             ids.add(NETWORK_ID_BASE + i);
         }
         Collections.shuffle(ids);
         Collections.shuffle(types);

         for (int i = 0; i < ids.size(); i++) {
             mManager.showNotification(ids.get(i), types.get(i), mWifiNai, mCellNai, null, false);
         }

         List<Integer> idsToClear = new ArrayList<>(ids);
         Collections.shuffle(idsToClear);
         for (int i = 0; i < ids.size(); i++) {
             mManager.clearNotification(idsToClear.get(i));
         }

         for (int i = 0; i < ids.size(); i++) {
             final int id = ids.get(i);
             final int eventId = types.get(i).eventId;
             final String tag = NetworkNotificationManager.tagFor(id);
             verify(mNotificationManager, times(1)).notify(eq(tag), eq(eventId), any());
             verify(mNotificationManager, times(1)).cancel(eq(tag), eq(eventId));
         }
     }

     @Test
     @Ignore
     // Ignored because the code under test calls Log.wtf, which crashes the tests on eng builds.
     // TODO: re-enable after fixing this (e.g., turn Log.wtf into exceptions that this test catches)
     public void testNoInternetNotificationsNotShownForCellular() {
         mManager.showNotification(100, NO_INTERNET, mCellNai, mWifiNai, null, false);
         mManager.showNotification(101, LOST_INTERNET, mCellNai, mWifiNai, null, false);

         verify(mNotificationManager, never()).notify(any(), anyInt(), any());

         mManager.showNotification(102, NO_INTERNET, mWifiNai, mCellNai, null, false);

         final int eventId = NO_INTERNET.eventId;
         final String tag = NetworkNotificationManager.tagFor(102);
         verify(mNotificationManager, times(1)).notify(eq(tag), eq(eventId), any());
     }

     @Test
     public void testNotificationsNotShownIfNoInternetCapability() {
         mWifiNai.networkCapabilities = new NetworkCapabilities();
         mWifiNai.networkCapabilities .addTransportType(NetworkCapabilities.TRANSPORT_WIFI);
         mManager.showNotification(102, NO_INTERNET, mWifiNai, mCellNai, null, false);
         mManager.showNotification(103, LOST_INTERNET, mWifiNai, mCellNai, null, false);
         mManager.showNotification(104, NETWORK_SWITCH, mWifiNai, mCellNai, null, false);

         verify(mNotificationManager, never()).notify(any(), anyInt(), any());
     }

     @Test
     public void testDuplicatedNotificationsNoInternetThenSignIn() {
         final int id = 101;
         final String tag = NetworkNotificationManager.tagFor(id);

         // Show first NO_INTERNET
         mManager.showNotification(id, NO_INTERNET, mWifiNai, mCellNai, null, false);
         verify(mNotificationManager, times(1)).notify(eq(tag), eq(NO_INTERNET.eventId), any());

         // Captive portal detection triggers SIGN_IN a bit later, clearing the previous NO_INTERNET
         mManager.showNotification(id, SIGN_IN, mWifiNai, mCellNai, null, false);
         verify(mNotificationManager, times(1)).cancel(eq(tag), eq(NO_INTERNET.eventId));
         verify(mNotificationManager, times(1)).notify(eq(tag), eq(SIGN_IN.eventId), any());

         // Network disconnects
         mManager.clearNotification(id);
         verify(mNotificationManager, times(1)).cancel(eq(tag), eq(SIGN_IN.eventId));
     }

     @Test
     public void testDuplicatedNotificationsSignInThenNoInternet() {
         final int id = 101;
         final String tag = NetworkNotificationManager.tagFor(id);

         // Show first SIGN_IN
         mManager.showNotification(id, SIGN_IN, mWifiNai, mCellNai, null, false);
         verify(mNotificationManager, times(1)).notify(eq(tag), eq(SIGN_IN.eventId), any());
         reset(mNotificationManager);

         // NO_INTERNET arrives after, but is ignored.
         mManager.showNotification(id, NO_INTERNET, mWifiNai, mCellNai, null, false);
         verify(mNotificationManager, never()).cancel(any(), anyInt());
         verify(mNotificationManager, never()).notify(any(), anyInt(), any());

         // Network disconnects
         mManager.clearNotification(id);
         verify(mNotificationManager, times(1)).cancel(eq(tag), eq(SIGN_IN.eventId));
     }

     @Test
     public void testClearNotificationByType() {
         final int id = 101;
         final String tag = NetworkNotificationManager.tagFor(id);

         // clearNotification(int id, NotificationType notifyType) will check if given type is equal
         // to previous type or not. If they are equal then clear the notification; if they are not
         // equal then return.
         mManager.showNotification(id, NO_INTERNET, mWifiNai, mCellNai, null, false);
         verify(mNotificationManager, times(1)).notify(eq(tag), eq(NO_INTERNET.eventId), any());

         // Previous notification is NO_INTERNET and given type is NO_INTERNET too. The notification
         // should be cleared.
         mManager.clearNotification(id, NO_INTERNET);
         verify(mNotificationManager, times(1)).cancel(eq(tag), eq(NO_INTERNET.eventId));

         // SIGN_IN is popped-up.
         mManager.showNotification(id, SIGN_IN, mWifiNai, mCellNai, null, false);
         verify(mNotificationManager, times(1)).notify(eq(tag), eq(SIGN_IN.eventId), any());

         // The notification type is not matching previous one, PARTIAL_CONNECTIVITY won't be
         // cleared.
         mManager.clearNotification(id, PARTIAL_CONNECTIVITY);
         verify(mNotificationManager, never()).cancel(eq(tag), eq(PARTIAL_CONNECTIVITY.eventId));
     }
 }
	/*
	* Copyright (C) 2016 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	package com.android.server.connectivity;

	import static com.android.server.connectivity.NetworkNotificationManager.NotificationType.*;

	import static org.mockito.Mockito.any;
	import static org.mockito.Mockito.anyInt;
	import static org.mockito.Mockito.clearInvocations;
	import static org.mockito.Mockito.doReturn;
	import static org.mockito.Mockito.eq;
	import static org.mockito.Mockito.mock;
	import static org.mockito.Mockito.never;
	import static org.mockito.Mockito.reset;
	import static org.mockito.Mockito.times;
	import static org.mockito.Mockito.verify;
	import static org.mockito.Mockito.when;

	import android.app.Notification;
	import android.app.NotificationManager;
	import android.content.Context;
	import android.content.pm.ApplicationInfo;
	import android.content.pm.PackageManager;
	import android.content.res.Resources;
	import android.net.ConnectivityResources;
	import android.net.NetworkCapabilities;
	import android.net.NetworkInfo;
	import android.os.UserHandle;
	import android.telephony.TelephonyManager;

	import androidx.test.filters.SmallTest;
	import androidx.test.runner.AndroidJUnit4;

	import com.android.connectivity.resources.R;
	import com.android.server.connectivity.NetworkNotificationManager.NotificationType;

	import org.junit.After;
	import org.junit.AfterClass;
	import org.junit.Before;
	import org.junit.BeforeClass;
	import org.junit.Ignore;
	import org.junit.Test;
	import org.junit.runner.RunWith;
	import org.mockito.AdditionalAnswers;
	import org.mockito.ArgumentCaptor;
	import org.mockito.Mock;
	import org.mockito.MockitoAnnotations;

	import java.util.ArrayList;
	import java.util.Arrays;
	import java.util.Collections;
	import java.util.List;

	@RunWith(AndroidJUnit4.class)
	@SmallTest
	public class NetworkNotificationManagerTest {

	private static final String TEST_SSID = "Test SSID";
	private static final String TEST_EXTRA_INFO = "extra";
	static final NetworkCapabilities CELL_CAPABILITIES = new NetworkCapabilities();
	static final NetworkCapabilities WIFI_CAPABILITIES = new NetworkCapabilities();
	static final NetworkCapabilities VPN_CAPABILITIES = new NetworkCapabilities();
	static {
	CELL_CAPABILITIES.addTransportType(NetworkCapabilities.TRANSPORT_CELLULAR);
	CELL_CAPABILITIES.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET);

	WIFI_CAPABILITIES.addTransportType(NetworkCapabilities.TRANSPORT_WIFI);
	WIFI_CAPABILITIES.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET);
	WIFI_CAPABILITIES.setSSID(TEST_SSID);

	// Set the underyling network to wifi.
	VPN_CAPABILITIES.addTransportType(NetworkCapabilities.TRANSPORT_WIFI);
	VPN_CAPABILITIES.addTransportType(NetworkCapabilities.TRANSPORT_VPN);
	VPN_CAPABILITIES.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET);
	VPN_CAPABILITIES.removeCapability(NetworkCapabilities.NET_CAPABILITY_NOT_VPN);
	}

	@Mock Context mCtx;
	@Mock Resources mResources;
	@Mock PackageManager mPm;
	@Mock TelephonyManager mTelephonyManager;
	@Mock NotificationManager mNotificationManager;
	@Mock NetworkAgentInfo mWifiNai;
	@Mock NetworkAgentInfo mCellNai;
	@Mock NetworkAgentInfo mVpnNai;
	@Mock NetworkInfo mNetworkInfo;
	ArgumentCaptor<Notification> mCaptor;

	NetworkNotificationManager mManager;

	@Before
	public void setUp() {
	MockitoAnnotations.initMocks(this);
	mCaptor = ArgumentCaptor.forClass(Notification.class);
	mWifiNai.networkCapabilities = WIFI_CAPABILITIES;
	mWifiNai.networkInfo = mNetworkInfo;
	mCellNai.networkCapabilities = CELL_CAPABILITIES;
	mCellNai.networkInfo = mNetworkInfo;
	mVpnNai.networkCapabilities = VPN_CAPABILITIES;
	mVpnNai.networkInfo = mNetworkInfo;
	doReturn(true).when(mVpnNai).isVPN();
	when(mCtx.getResources()).thenReturn(mResources);
	when(mCtx.getPackageManager()).thenReturn(mPm);
	when(mCtx.getApplicationInfo()).thenReturn(new ApplicationInfo());
	final Context asUserCtx = mock(Context.class, AdditionalAnswers.delegatesTo(mCtx));
	doReturn(UserHandle.ALL).when(asUserCtx).getUser();
	when(mCtx.createContextAsUser(eq(UserHandle.ALL), anyInt())).thenReturn(asUserCtx);
	when(mCtx.getSystemService(eq(Context.NOTIFICATION_SERVICE)))
	.thenReturn(mNotificationManager);
	when(mNetworkInfo.getExtraInfo()).thenReturn(TEST_EXTRA_INFO);
	ConnectivityResources.setResourcesContextForTest(mCtx);
	when(mResources.getColor(anyInt(), any())).thenReturn(0xFF607D8B);

	// Come up with some credible-looking transport names. The actual values do not matter.
	String[] transportNames = new String[NetworkCapabilities.MAX_TRANSPORT + 1];
	for (int transport = 0; transport <= NetworkCapabilities.MAX_TRANSPORT; transport++) {
	transportNames[transport] = NetworkCapabilities.transportNameOf(transport);
	}
	when(mResources.getStringArray(R.array.network_switch_type_name))
	.thenReturn(transportNames);

	mManager = new NetworkNotificationManager(mCtx, mTelephonyManager);
	}

	@After
	public void tearDown() {
	ConnectivityResources.setResourcesContextForTest(null);
	}

	private void verifyTitleByNetwork(final int id, final NetworkAgentInfo nai, final int title) {
	final String tag = NetworkNotificationManager.tagFor(id);
	mManager.showNotification(id, PRIVATE_DNS_BROKEN, nai, null, null, true);
	verify(mNotificationManager, times(1))
	.notify(eq(tag), eq(PRIVATE_DNS_BROKEN.eventId), any());
	final int transportType = NetworkNotificationManager.approximateTransportType(nai);
	if (transportType == NetworkCapabilities.TRANSPORT_WIFI) {
	verify(mResources, times(1)).getString(eq(title), eq(TEST_EXTRA_INFO));
	} else {
	verify(mResources, times(1)).getString(title);
	}
	verify(mResources, times(1)).getString(eq(R.string.private_dns_broken_detailed));
	}

	@Test
	public void testTitleOfPrivateDnsBroken() {
	// Test the title of mobile data.
	verifyTitleByNetwork(100, mCellNai, R.string.mobile_no_internet);
	clearInvocations(mResources);

	// Test the title of wifi.
	verifyTitleByNetwork(101, mWifiNai, R.string.wifi_no_internet);
	clearInvocations(mResources);

	// Test the title of other networks.
	verifyTitleByNetwork(102, mVpnNai, R.string.other_networks_no_internet);
	clearInvocations(mResources);
	}

	@Test
	public void testNotificationsShownAndCleared() {
	final int NETWORK_ID_BASE = 100;
	List<NotificationType> types = Arrays.asList(NotificationType.values());
	List<Integer> ids = new ArrayList<>(types.size());
	for (int i = 0; i < types.size(); i++) {
	ids.add(NETWORK_ID_BASE + i);
	}
	Collections.shuffle(ids);
	Collections.shuffle(types);

	for (int i = 0; i < ids.size(); i++) {
	mManager.showNotification(ids.get(i), types.get(i), mWifiNai, mCellNai, null, false);
	}

	List<Integer> idsToClear = new ArrayList<>(ids);
	Collections.shuffle(idsToClear);
	for (int i = 0; i < ids.size(); i++) {
	mManager.clearNotification(idsToClear.get(i));
	}

	for (int i = 0; i < ids.size(); i++) {
	final int id = ids.get(i);
	final int eventId = types.get(i).eventId;
	final String tag = NetworkNotificationManager.tagFor(id);
	verify(mNotificationManager, times(1)).notify(eq(tag), eq(eventId), any());
	verify(mNotificationManager, times(1)).cancel(eq(tag), eq(eventId));
	}
	}

	@Test
	@Ignore
	// Ignored because the code under test calls Log.wtf, which crashes the tests on eng builds.
	// TODO: re-enable after fixing this (e.g., turn Log.wtf into exceptions that this test catches)
	public void testNoInternetNotificationsNotShownForCellular() {
	mManager.showNotification(100, NO_INTERNET, mCellNai, mWifiNai, null, false);
	mManager.showNotification(101, LOST_INTERNET, mCellNai, mWifiNai, null, false);

	verify(mNotificationManager, never()).notify(any(), anyInt(), any());

	mManager.showNotification(102, NO_INTERNET, mWifiNai, mCellNai, null, false);

	final int eventId = NO_INTERNET.eventId;
	final String tag = NetworkNotificationManager.tagFor(102);
	verify(mNotificationManager, times(1)).notify(eq(tag), eq(eventId), any());
	}

	@Test
	public void testNotificationsNotShownIfNoInternetCapability() {
	mWifiNai.networkCapabilities = new NetworkCapabilities();
	mWifiNai.networkCapabilities .addTransportType(NetworkCapabilities.TRANSPORT_WIFI);
	mManager.showNotification(102, NO_INTERNET, mWifiNai, mCellNai, null, false);
	mManager.showNotification(103, LOST_INTERNET, mWifiNai, mCellNai, null, false);
	mManager.showNotification(104, NETWORK_SWITCH, mWifiNai, mCellNai, null, false);

	verify(mNotificationManager, never()).notify(any(), anyInt(), any());
	}

	@Test
	public void testDuplicatedNotificationsNoInternetThenSignIn() {
	final int id = 101;
	final String tag = NetworkNotificationManager.tagFor(id);

	// Show first NO_INTERNET
	mManager.showNotification(id, NO_INTERNET, mWifiNai, mCellNai, null, false);
	verify(mNotificationManager, times(1)).notify(eq(tag), eq(NO_INTERNET.eventId), any());

	// Captive portal detection triggers SIGN_IN a bit later, clearing the previous NO_INTERNET
	mManager.showNotification(id, SIGN_IN, mWifiNai, mCellNai, null, false);
	verify(mNotificationManager, times(1)).cancel(eq(tag), eq(NO_INTERNET.eventId));
	verify(mNotificationManager, times(1)).notify(eq(tag), eq(SIGN_IN.eventId), any());

	// Network disconnects
	mManager.clearNotification(id);
	verify(mNotificationManager, times(1)).cancel(eq(tag), eq(SIGN_IN.eventId));
	}

	@Test
	public void testDuplicatedNotificationsSignInThenNoInternet() {
	final int id = 101;
	final String tag = NetworkNotificationManager.tagFor(id);

	// Show first SIGN_IN
	mManager.showNotification(id, SIGN_IN, mWifiNai, mCellNai, null, false);
	verify(mNotificationManager, times(1)).notify(eq(tag), eq(SIGN_IN.eventId), any());
	reset(mNotificationManager);

	// NO_INTERNET arrives after, but is ignored.
	mManager.showNotification(id, NO_INTERNET, mWifiNai, mCellNai, null, false);
	verify(mNotificationManager, never()).cancel(any(), anyInt());
	verify(mNotificationManager, never()).notify(any(), anyInt(), any());

	// Network disconnects
	mManager.clearNotification(id);
	verify(mNotificationManager, times(1)).cancel(eq(tag), eq(SIGN_IN.eventId));
	}

	@Test
	public void testClearNotificationByType() {
	final int id = 101;
	final String tag = NetworkNotificationManager.tagFor(id);

	// clearNotification(int id, NotificationType notifyType) will check if given type is equal
	// to previous type or not. If they are equal then clear the notification; if they are not
	// equal then return.
	mManager.showNotification(id, NO_INTERNET, mWifiNai, mCellNai, null, false);
	verify(mNotificationManager, times(1)).notify(eq(tag), eq(NO_INTERNET.eventId), any());

	// Previous notification is NO_INTERNET and given type is NO_INTERNET too. The notification
	// should be cleared.
	mManager.clearNotification(id, NO_INTERNET);
	verify(mNotificationManager, times(1)).cancel(eq(tag), eq(NO_INTERNET.eventId));

	// SIGN_IN is popped-up.
	mManager.showNotification(id, SIGN_IN, mWifiNai, mCellNai, null, false);
	verify(mNotificationManager, times(1)).notify(eq(tag), eq(SIGN_IN.eventId), any());

	// The notification type is not matching previous one, PARTIAL_CONNECTIVITY won't be
	// cleared.
	mManager.clearNotification(id, PARTIAL_CONNECTIVITY);
	verify(mNotificationManager, never()).cancel(eq(tag), eq(PARTIAL_CONNECTIVITY.eventId));
	}
	}