Move feature-level Bubble setting into developer options; default to off

Functionality:
* Moves feature-level setting into developer settings (apps section)
* Adds bubbles in developer options under "apps" section
* Configures the app-specific bubble toggle in notifications settings
  to be hidden / shown based on the developer setting
* Configures the channel-specific bubble toggle in notification channel
  settings to be hidden / shown based on the developer setting

Tests:
* Anything that might be assuming that it's globally enabled now has
  a bit to enable it globally in that test
* There is a logic change now where the app-level setting would be available
  even if off globally, now that is not true -- if it's off globally the
  app-level is no longer available
* Adds tests for the developer setting

Test: make -j40 RunSettingsRoboTests ROBOTEST_FILTER="Bubble"
Bug: 131845765
Change-Id: I5f6bf74e5ada3fc023571825cca10d7bddc60e6e

tests/robotests/src/com/android/settings/development/BubbleGlobalPreferenceControllerTest.java

@@ -0,0 +1,111 @@
+/*
+ * Copyright (C) 2019 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 android.provider.Settings.Secure.NOTIFICATION_BUBBLES;
+
+import static com.android.settings.development.BubbleGlobalPreferenceController.OFF;
+import static com.android.settings.development.BubbleGlobalPreferenceController.ON;
+
+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;
+import org.robolectric.RuntimeEnvironment;
+
+@RunWith(RobolectricTestRunner.class)
+public class BubbleGlobalPreferenceControllerTest {
+    private Context mContext;
+
+    @Mock
+    private SwitchPreference mPreference;
+    @Mock
+    private PreferenceScreen mPreferenceScreen;
+
+    private BubbleGlobalPreferenceController mController;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+        mContext = RuntimeEnvironment.application;
+        mController = new BubbleGlobalPreferenceController(mContext);
+        when(mPreferenceScreen.findPreference(mController.getPreferenceKey()))
+                .thenReturn(mPreference);
+        mController.displayPreference(mPreferenceScreen);
+    }
+
+    @Test
+    public void onPreferenceChange_settingEnabled_allowBubbles_shouldBeOn() {
+        mController.onPreferenceChange(mPreference, true /* new value */);
+
+        assertThat(isSettingEnabled()).isTrue();
+    }
+
+    @Test
+    public void onPreferenceChange_settingDisabled_allowBubbles_shouldBeOff() {
+        mController.onPreferenceChange(mPreference, false /* new value */);
+
+        assertThat(isSettingEnabled()).isFalse();
+    }
+
+    @Test
+    public void updateState_settingEnabled_preferenceShouldBeChecked() {
+        Settings.Secure.putInt(mContext.getContentResolver(),
+                NOTIFICATION_BUBBLES, 1 /* enabled */);
+        mController.updateState(mPreference);
+
+        verify(mPreference).setChecked(true);
+    }
+
+    @Test
+    public void updateState_settingReset_defaultDisabled_preferenceShouldNotBeChecked() {
+        Settings.Secure.putInt(mContext.getContentResolver(),
+                NOTIFICATION_BUBBLES, 0 /* enabled */);
+        mController.updateState(mPreference);
+
+        verify(mPreference).setChecked(false);
+    }
+
+    @Test
+    public void onDeveloperOptionsSwitchDisabled_shouldDisable() {
+        mController.onDeveloperOptionsSwitchDisabled();
+
+        verify(mPreference).setChecked(false);
+        verify(mPreference).setEnabled(false);
+
+        assertThat(isSettingEnabled()).isFalse();
+    }
+
+    private boolean isSettingEnabled() {
+        return Settings.Secure.getInt(mContext.getContentResolver(), NOTIFICATION_BUBBLES,
+                OFF /* default off */) == ON;
+    }
+
+}