Add setting page for swipe to notification.

In this change input & gesture page added 5 separate gesture
preferences, each should lead to a new page to set gesture setting. For
now only swipe to notification preference is wired up. Will implement
the rest in later changes.

Bug: 32637613
Test: make RunSettingsRoboTests -j40
Change-Id: I57ceea8fcd85f3a0ab59cbd12da50b7138f5ca0c

tests/robotests/src/com/android/settings/gestures/SwipeToNotificationPreferenceControllerTest.java

@@ -22,6 +22,7 @@ import android.support.v7.preference.Preference;
 import android.support.v7.preference.PreferenceScreen;
 import android.support.v7.preference.TwoStatePreference;
 
+import com.android.settings.R;
 import com.android.settings.SettingsRobolectricTestRunner;
 import com.android.settings.TestConfig;
 
@@ -83,26 +84,49 @@ public class SwipeToNotificationPreferenceControllerTest {
 
     @Test
     public void updateState_preferenceSetCheckedWhenSettingIsOn() {
+        // Mock a TwoStatePreference
         final TwoStatePreference preference = mock(TwoStatePreference.class);
+        // Set the setting to be enabled.
         final Context context = ShadowApplication.getInstance().getApplicationContext();
         Settings.System.putInt(context.getContentResolver(), SYSTEM_NAVIGATION_KEYS_ENABLED, 1);
 
+        // Run through updateState
         mController = new SwipeToNotificationPreferenceController(context);
         mController.updateState(preference);
 
+        // Verify pref is checked (as setting is enabled).
         verify(preference).setChecked(true);
     }
 
     @Test
     public void updateState_preferenceSetUncheckedWhenSettingIsOff() {
+        // Mock a TwoStatePreference
         final TwoStatePreference preference = mock(TwoStatePreference.class);
+        // Set the setting to be disabled.
         final Context context = ShadowApplication.getInstance().getApplicationContext();
         Settings.System.putInt(context.getContentResolver(), SYSTEM_NAVIGATION_KEYS_ENABLED, 0);
 
+        // Run through updateState
         mController = new SwipeToNotificationPreferenceController(context);
         mController.updateState(preference);
 
+        // Verify pref is unchecked (as setting is disabled).
         verify(preference).setChecked(false);
     }
 
+    @Test
+    public void updateState_notTwoStatePreference_setSummary() {
+        // Mock a regular preference
+        final Preference preference = mock(Preference.class);
+        // Set the setting to be disabled.
+        final Context context = ShadowApplication.getInstance().getApplicationContext();
+        Settings.System.putInt(context.getContentResolver(), SYSTEM_NAVIGATION_KEYS_ENABLED, 0);
+
+        // Run through updateState
+        mController = new SwipeToNotificationPreferenceController(context);
+        mController.updateState(preference);
+
+        // Verify summary is set to off (as setting is disabled).
+        verify(preference).setSummary(R.string.gesture_setting_off);
+    }
 }

tests/robotests/src/com/android/settings/gestures/SwipeToNotificationSettingsTest.java

@@ -0,0 +1,65 @@
+/*
+ * 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.settings.gestures;
+
+import android.content.Context;
+
+import com.android.settings.R;
+import com.android.settings.SettingsRobolectricTestRunner;
+import com.android.settings.TestConfig;
+import com.android.settings.core.PreferenceController;
+
+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.annotation.Config;
+
+import java.util.List;
+
+import static com.google.common.truth.Truth.assertThat;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public class SwipeToNotificationSettingsTest {
+
+    @Mock(answer = Answers.RETURNS_DEEP_STUBS)
+    private Context mContext;
+    private SwipeToNotificationSettings mFragment;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+        mFragment = new SwipeToNotificationSettings();
+    }
+
+    @Test
+    public void testGetPreferenceScreenResId() {
+        assertThat(mFragment.getPreferenceScreenResId())
+                .isEqualTo(R.xml.swipe_to_notification_settings);
+    }
+
+    @Test
+    public void testGetPreferenceControllers_shouldAllBeCreated() {
+        final List<PreferenceController> controllers = mFragment.getPreferenceControllers(mContext);
+
+        assertThat(controllers.isEmpty()).isFalse();
+    }
+
+}