Display current vpn for Vpn preference summary text

Change-Id: Id9917a07e519d16e2000b4fa9888f783171e55f8
Fix: 34974598
Test: RunSettingsRoboTests

tests/robotests/src/com/android/settings/network/VpnPreferenceControllerTest.java

@@ -0,0 +1,103 @@
+/*
+ * Copyright (C) 2017 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.settings.network;
+
+
+import android.content.Context;
+import android.net.ConnectivityManager;
+import android.net.IConnectivityManager;
+import android.net.NetworkRequest;
+import android.os.IBinder;
+import android.support.v7.preference.Preference;
+import android.support.v7.preference.PreferenceScreen;
+
+import com.android.settings.SettingsRobolectricTestRunner;
+import com.android.settings.TestConfig;
+import com.android.settings.core.lifecycle.Lifecycle;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.annotation.Config;
+import org.robolectric.shadows.ShadowServiceManager;
+
+import static org.mockito.Matchers.any;
+import static org.mockito.Matchers.anyString;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public class VpnPreferenceControllerTest {
+
+    @Mock
+    private Context mContext;
+    @Mock
+    private ConnectivityManager mConnectivityManager;
+    @Mock
+    private IBinder mBinder;
+    @Mock
+    private IConnectivityManager mConnectivityManagerService;
+    @Mock
+    private PreferenceScreen mScreen;
+    @Mock
+    private Preference mPreference;
+    private VpnPreferenceController mController;
+    private Lifecycle mLifecycle;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+        when(mContext.getSystemService(Context.CONNECTIVITY_SERVICE))
+                .thenReturn(mConnectivityManager);
+        when(mBinder.queryLocalInterface("android.net.IConnectivityManager"))
+                .thenReturn(mConnectivityManagerService);
+        ShadowServiceManager.addService(Context.CONNECTIVITY_SERVICE, mBinder);
+        when(mScreen.findPreference(anyString())).thenReturn(mPreference);
+
+        mController = spy(new VpnPreferenceController(mContext));
+        mLifecycle = new Lifecycle();
+        mLifecycle.addObserver(mController);
+    }
+
+    @Test
+    public void displayPreference_available_shouldSetDependency() {
+
+        doReturn(true).when(mController).isAvailable();
+        mController.displayPreference(mScreen);
+
+        verify(mPreference).setDependency(AirplaneModePreferenceController.KEY_TOGGLE_AIRPLANE);
+    }
+
+    @Test
+    public void goThroughLifecycle_shouldRegisterUnregisterListener() {
+        doReturn(true).when(mController).isAvailable();
+
+        mLifecycle.onResume();
+        verify(mConnectivityManager).registerNetworkCallback(
+                any(NetworkRequest.class), any(ConnectivityManager.NetworkCallback.class));
+
+        mLifecycle.onPause();
+        verify(mConnectivityManager).unregisterNetworkCallback(
+                any(ConnectivityManager.NetworkCallback.class));
+    }
+
+}