Update Network & internet->Wi-Fi to use MasterSwitchPreference.

- Add a preference controller for Network & internet->Wi-Fi to control
  the preference toggling and summary update.
- Refactor WifiSettings and WifiEnabler to share code between the new
  wifi preference controller and the wifi setting.
- Refactor BluetoothSummaryHelper to have a common base class with the
  WifiSummaryHelper.
- Rename the summary helper to summary updater.

Bug: 34280769
Test: make RunSettingsRoboTests
Change-Id: I00ebfc161bcef89331bb41ba405ed8cb8232d248

tests/robotests/src/com/android/settings/wifi/WifiSummaryUpdaterTest.java

@@ -0,0 +1,136 @@
+/*
+ * 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.wifi;
+
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.net.wifi.WifiManager;
+
+import com.android.settings.R;
+import com.android.settings.SettingsRobolectricTestRunner;
+import com.android.settings.TestConfig;
+import com.android.settings.widget.SummaryUpdater.OnSummaryChangeListener;
+import com.android.settingslib.wifi.WifiStatusTracker;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Answers;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.RuntimeEnvironment;
+import org.robolectric.annotation.Config;
+
+import static com.google.common.truth.Truth.assertThat;
+import static org.mockito.Matchers.any;
+import static org.mockito.Matchers.anyString;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.verify;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public class WifiSummaryUpdaterTest {
+
+    @Mock(answer = Answers.RETURNS_DEEP_STUBS)
+    private WifiManager mWifiManager;
+    @Mock
+    private SummaryListener mListener;
+
+    private Context mContext;
+    private WifiSummaryUpdater mSummaryUpdater;
+    private WifiStatusTracker mWifiTracker;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+        mWifiTracker = new WifiStatusTracker(mWifiManager);
+
+        mContext = spy(RuntimeEnvironment.application.getApplicationContext());
+        mSummaryUpdater = new WifiSummaryUpdater(mContext, mListener, mWifiTracker);
+    }
+
+    @Test
+    public void register_true_shouldRegisterListener() {
+        mSummaryUpdater.register(true);
+
+        verify(mContext).registerReceiver(any(BroadcastReceiver.class), any(IntentFilter.class));
+    }
+
+    @Test
+    public void register_false_shouldUnregisterListener() {
+        mSummaryUpdater.register(true);
+        mSummaryUpdater.register(false);
+
+        verify(mContext).unregisterReceiver(any(BroadcastReceiver.class));
+    }
+
+    @Test
+    public void onReceive_networkStateChanged_shouldSendSummaryChange() {
+        mSummaryUpdater.register(true);
+        mContext.sendBroadcast(new Intent(WifiManager.NETWORK_STATE_CHANGED_ACTION));
+
+
+        verify(mListener).onSummaryChanged(anyString());
+    }
+
+    @Test
+    public void onReceive_rssiChanged_shouldSendSummaryChange() {
+        mSummaryUpdater.register(true);
+        mContext.sendBroadcast(new Intent(WifiManager.RSSI_CHANGED_ACTION));
+
+
+        verify(mListener).onSummaryChanged(anyString());
+    }
+
+    @Test
+    public void getSummary_wifiDisabled_shouldReturnDisabled() {
+        mWifiTracker.enabled = false;
+
+        assertThat(mSummaryUpdater.getSummary()).isEqualTo(
+            mContext.getString(R.string.wifi_disabled_generic));
+    }
+
+    @Test
+    public void getSummary_wifiDisconnected_shouldReturnDisconnected() {
+        mWifiTracker.enabled = true;
+        mWifiTracker.connected = false;
+
+        assertThat(mSummaryUpdater.getSummary()).isEqualTo(
+            mContext.getString(R.string.disconnected));
+    }
+
+    @Test
+    public void getSummary_wifiConnected_shouldReturnSsid() {
+        mWifiTracker.enabled = true;
+        mWifiTracker.connected = true;
+        mWifiTracker.ssid = "Test Ssid";
+
+        assertThat(mSummaryUpdater.getSummary()).isEqualTo("Test Ssid");
+    }
+
+    private class SummaryListener implements OnSummaryChangeListener {
+        String summary;
+
+        @Override
+        public void onSummaryChanged(String summary) {
+            this.summary = summary;
+        }
+    }
+
+}