Add logging to Bluetooth settings.

- Add logging when users selects the listed devices to connect or
disconnect, and when connection error is shown
- Update the event for the top level bluetooth master switch toggle to
have its own event.

Change-Id: I58f21256fdd07fad9d733ff987ff38df1148f4f8
Fix: 35065258
Test: make RunSettingsRoboTests

tests/robotests/src/com/android/settings/bluetooth/BluetoothEnablerTest.java

@@ -0,0 +1,59 @@
+/*
+ * 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.bluetooth;
+
+import android.content.Context;
+
+import com.android.settings.SettingsRobolectricTestRunner;
+import com.android.settings.TestConfig;
+import com.android.settings.core.instrumentation.MetricsFeatureProvider;
+import com.android.settings.widget.MasterSwitchController;
+import com.android.settingslib.bluetooth.LocalBluetoothManager;
+
+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 static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public class BluetoothEnablerTest {
+
+    @Mock
+    private MetricsFeatureProvider mMetricsFeatureProvider;
+    @Mock
+    private Context mContext;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+    }
+
+    @Test
+    public void onSwitchToggled_shouldLogActionWithSuppliedEvent() {
+        BluetoothEnabler bluetoothEnabler = new BluetoothEnabler(mContext,
+            mock(MasterSwitchController.class), mMetricsFeatureProvider,
+            mock(LocalBluetoothManager.class), 123);
+        bluetoothEnabler.onSwitchToggled(false);
+
+        verify(mMetricsFeatureProvider).action(mContext, 123, false);
+    }
+}