From 79b0315be66f59033d28f7a83930d36e71426386 Mon Sep 17 00:00:00 2001
From: Blake Kragten <kragtenb@google.com>
Date: Tue, 28 Jan 2020 13:45:13 -0800
Subject: [PATCH] Enhanced Connectivity Dev Toggle

Add Enhanced Connectivity Developer option switch. This switch will
allow the connectivity thermal power manager to actively shutoff 5G in
order to save power when cellular throughput is below the set threshold.

ScreenShots: https://drive.google.com/drive/folders/109VTTXqIn5Teg6daHpNHV7z13MmEEb7Q?usp=sharing

Bug: 147305171
Test: make RunSettingsRoboTests ROBOTEST_FILTER=EnhancedConnectivityPreferenceControllerTest
Test: On-device using developer option menu

Change-Id: I311cfcadb8325db30ff4917959414b5a7d108bcc
---
 res/xml/development_settings.xml              |   5 +
 .../DevelopmentSettingsDashboardFragment.java |   1 +
 ...ancedConnectivityPreferenceController.java |  81 +++++++++++++
 ...dConnectivityPreferenceControllerTest.java | 107 ++++++++++++++++++
 4 files changed, 194 insertions(+)
 create mode 100644 src/com/android/settings/development/EnhancedConnectivityPreferenceController.java
 create mode 100644 tests/robotests/src/com/android/settings/development/EnhancedConnectivityPreferenceControllerTest.java

diff --git a/res/xml/development_settings.xml b/res/xml/development_settings.xml
index a49d85b9f09..17672c5e9f6 100644
--- a/res/xml/development_settings.xml
+++ b/res/xml/development_settings.xml
@@ -263,6 +263,11 @@
             android:title="@string/mobile_data_always_on"
             android:summary="@string/mobile_data_always_on_summary" />
 
+        <SwitchPreference
+            android:key="enhanced_connectivity"
+            android:title="@string/enhanced_connectivity"
+            android:summary="@string/enhanced_connectivity_summary" />
+
         <SwitchPreference
             android:key="tethering_hardware_offload"
             android:title="@string/tethering_hardware_offload"
diff --git a/src/com/android/settings/development/DevelopmentSettingsDashboardFragment.java b/src/com/android/settings/development/DevelopmentSettingsDashboardFragment.java
index 1c08131e2da..874ae52cae6 100644
--- a/src/com/android/settings/development/DevelopmentSettingsDashboardFragment.java
+++ b/src/com/android/settings/development/DevelopmentSettingsDashboardFragment.java
@@ -468,6 +468,7 @@ public class DevelopmentSettingsDashboardFragment extends RestrictedDashboardFra
         controllers.add(new BluetoothMapVersionPreferenceController(context));
         controllers.add(new BluetoothA2dpHwOffloadPreferenceController(context, fragment));
         controllers.add(new BluetoothMaxConnectedAudioDevicesPreferenceController(context));
+        controllers.add(new EnhancedConnectivityPreferenceController(context));
         controllers.add(new ShowTapsPreferenceController(context));
         controllers.add(new PointerLocationPreferenceController(context));
         controllers.add(new ShowSurfaceUpdatesPreferenceController(context));
diff --git a/src/com/android/settings/development/EnhancedConnectivityPreferenceController.java b/src/com/android/settings/development/EnhancedConnectivityPreferenceController.java
new file mode 100644
index 00000000000..2dbd7d1ee2b
--- /dev/null
+++ b/src/com/android/settings/development/EnhancedConnectivityPreferenceController.java
@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2020 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.development;
+
+import android.content.Context;
+import android.provider.Settings;
+
+import androidx.preference.Preference;
+import androidx.preference.SwitchPreference;
+
+import com.android.internal.annotations.VisibleForTesting;
+import com.android.settings.core.PreferenceControllerMixin;
+import com.android.settingslib.development.DeveloperOptionsPreferenceController;
+
+/**
+ * Preference controller for Enhanced Connectivity feature
+ */
+public class EnhancedConnectivityPreferenceController extends
+        DeveloperOptionsPreferenceController implements Preference.OnPreferenceChangeListener,
+        PreferenceControllerMixin {
+
+    private static final String ENHANCED_CONNECTIVITY_KEY = "enhanced_connectivity";
+
+    @VisibleForTesting
+    static final int ENHANCED_CONNECTIVITY_ON = 1;
+    // default is enhanced connectivity disabled.
+    @VisibleForTesting
+    static final int ENHANCED_CONNECTIVITY_OFF = 0;
+
+    public EnhancedConnectivityPreferenceController(Context context) {
+        super(context);
+    }
+
+    @Override
+    public boolean onPreferenceChange(Preference preference, Object o) {
+        final boolean isEnabled = (Boolean) o;
+        Settings.Global.putInt(mContext.getContentResolver(),
+                Settings.Global.ENHANCED_CONNECTIVITY_ENABLED,
+                isEnabled
+                        ? ENHANCED_CONNECTIVITY_ON
+                        : ENHANCED_CONNECTIVITY_OFF);
+        return true;
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return ENHANCED_CONNECTIVITY_KEY;
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        final int enhancedConnectivityEnabled = Settings.Global.getInt(
+                mContext.getContentResolver(), Settings.Global.ENHANCED_CONNECTIVITY_ENABLED,
+                ENHANCED_CONNECTIVITY_OFF);
+        ((SwitchPreference) mPreference).setChecked(
+                enhancedConnectivityEnabled == ENHANCED_CONNECTIVITY_ON);
+    }
+
+    @Override
+    protected void onDeveloperOptionsSwitchDisabled() {
+        super.onDeveloperOptionsSwitchDisabled();
+        Settings.Global.putInt(mContext.getContentResolver(),
+                Settings.Global.ENHANCED_CONNECTIVITY_ENABLED,
+                ENHANCED_CONNECTIVITY_OFF);
+        ((SwitchPreference) mPreference).setChecked(false);
+    }
+}
diff --git a/tests/robotests/src/com/android/settings/development/EnhancedConnectivityPreferenceControllerTest.java b/tests/robotests/src/com/android/settings/development/EnhancedConnectivityPreferenceControllerTest.java
new file mode 100644
index 00000000000..6fd6f553850
--- /dev/null
+++ b/tests/robotests/src/com/android/settings/development/EnhancedConnectivityPreferenceControllerTest.java
@@ -0,0 +1,107 @@
+/*
+ * Copyright (C) 2020 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.development;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+import android.provider.Settings;
+
+import androidx.preference.PreferenceScreen;
+import androidx.preference.SwitchPreference;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.RobolectricTestRunner;
+
+@RunWith(RobolectricTestRunner.class)
+public class EnhancedConnectivityPreferenceControllerTest {
+    @Mock
+    private Context mContext;
+
+    @Mock
+    private SwitchPreference mPreference;
+    @Mock
+    private PreferenceScreen mPreferenceScreen;
+
+    private EnhancedConnectivityPreferenceController mController;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+        mController = new EnhancedConnectivityPreferenceController(mContext);
+        when(mPreferenceScreen.findPreference(mController.getPreferenceKey()))
+                .thenReturn(mPreference);
+        mController.displayPreference(mPreferenceScreen);
+    }
+
+    @Test
+    public void onPreferenceChanged_enhanceConnectivity_shouldBeOn() {
+        mController.onPreferenceChange(mPreference, true /* new value */);
+
+        assertThat(isSettingEnabled()).isTrue();
+    }
+
+    @Test
+    public void onPreferenceChanged_enhanceConnectivity_shouldBeOff() {
+        mController.onPreferenceChange(mPreference, false /* new value */);
+
+        assertThat(isSettingEnabled()).isFalse();
+    }
+
+    @Test
+    public void updateState_preferenceShouldBeChecked() {
+        Settings.Global.putInt(mContext.getContentResolver(),
+                Settings.Global.ENHANCED_CONNECTIVITY_ENABLED, 1 /* enabled */);
+        mController.updateState(mPreference);
+
+        verify(mPreference).setChecked(true);
+    }
+
+    @Test
+    public void updateState_preferenceShouldNotBeChecked() {
+        Settings.Global.putInt(mContext.getContentResolver(),
+                Settings.Global.ENHANCED_CONNECTIVITY_ENABLED, 0 /* disabled */);
+        mController.updateState(mPreference);
+
+        verify(mPreference).setChecked(false);
+    }
+
+    @Test
+    public void onDeveloperOptionsDisabled_shouldDisablePreference() {
+        mController.onDeveloperOptionsDisabled();
+
+        verify(mPreference).setEnabled(false);
+        verify(mPreference).setChecked(false);
+
+        assertThat(isSettingEnabled()).isFalse();
+    }
+
+    private boolean isSettingEnabled() {
+        return Settings.Global.getInt(mContext.getContentResolver(),
+                Settings.Global.ENHANCED_CONNECTIVITY_ENABLED,
+                EnhancedConnectivityPreferenceController.ENHANCED_CONNECTIVITY_OFF
+                /* default off */)
+                == EnhancedConnectivityPreferenceController.ENHANCED_CONNECTIVITY_ON;
+    }
+}