feat(force invert): add force invert Settings preference in A11y > Color and Motion

Bug: 312289375
Test: atest packages/apps/Settings/tests/robotests/src/com/android/settings/accessibility/ColorAndMotionFragmentTest.java
  && atest packages/apps/Settings/tests/robotests/src/com/android/settings/accessibility/ToggleForceInvertPreferenceControllerTest.java
Flag: android.view.accessibility.Flags.forceInvertColor

Change-Id: I2739a1dfecbbddcd240a3113344987ade2b7c717

tests/robotests/src/com/android/settings/accessibility/ColorAndMotionFragmentTest.java

@@ -16,10 +16,16 @@
 
 package com.android.settings.accessibility;
 
+import static android.view.accessibility.Flags.FLAG_FORCE_INVERT_COLOR;
+
 import static com.google.common.truth.Truth.assertThat;
 
 import android.app.settings.SettingsEnums;
 import android.content.Context;
+import android.platform.test.annotations.RequiresFlagsDisabled;
+import android.platform.test.annotations.RequiresFlagsEnabled;
+import android.platform.test.flag.junit.CheckFlagsRule;
+import android.platform.test.flag.junit.DeviceFlagsValueProvider;
 
 import androidx.test.core.app.ApplicationProvider;
 
@@ -27,6 +33,7 @@ import com.android.settings.R;
 import com.android.settings.testutils.XmlTestUtils;
 
 import org.junit.Before;
+import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.robolectric.RobolectricTestRunner;
@@ -37,6 +44,9 @@ import java.util.List;
 @RunWith(RobolectricTestRunner.class)
 public class ColorAndMotionFragmentTest {
 
+    @Rule
+    public final CheckFlagsRule mCheckFlagsRule = DeviceFlagsValueProvider.createCheckFlagsRule();
+
     private final Context mContext = ApplicationProvider.getApplicationContext();
     private ColorAndMotionFragment mFragment;
 
@@ -63,6 +73,20 @@ public class ColorAndMotionFragmentTest {
     }
 
     @Test
+    @RequiresFlagsEnabled(FLAG_FORCE_INVERT_COLOR)
+    public void forceInvertEnabled_getNonIndexableKeys_existInXmlLayout() {
+        final List<String> niks = ColorAndMotionFragment.SEARCH_INDEX_DATA_PROVIDER
+                .getNonIndexableKeys(mContext);
+        final List<String> keys =
+                XmlTestUtils.getKeysFromPreferenceXml(mContext,
+                        R.xml.accessibility_color_and_motion);
+
+        assertThat(niks).doesNotContain(ColorAndMotionFragment.TOGGLE_FORCE_INVERT);
+        assertThat(keys).containsAtLeastElementsIn(niks);
+    }
+
+    @Test
+    @RequiresFlagsDisabled(FLAG_FORCE_INVERT_COLOR)
     public void getNonIndexableKeys_existInXmlLayout() {
         final List<String> niks = ColorAndMotionFragment.SEARCH_INDEX_DATA_PROVIDER
                 .getNonIndexableKeys(mContext);
@@ -70,6 +94,7 @@ public class ColorAndMotionFragmentTest {
                 XmlTestUtils.getKeysFromPreferenceXml(mContext,
                         R.xml.accessibility_color_and_motion);
 
+        assertThat(niks).contains(ColorAndMotionFragment.TOGGLE_FORCE_INVERT);
         assertThat(keys).containsAtLeastElementsIn(niks);
     }
 }

tests/robotests/src/com/android/settings/accessibility/ToggleForceInvertPreferenceControllerTest.java

@@ -0,0 +1,107 @@
+/*
+ * 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.accessibility;
+
+import static android.view.accessibility.Flags.FLAG_FORCE_INVERT_COLOR;
+
+import static com.android.settings.accessibility.AccessibilityUtil.State.OFF;
+import static com.android.settings.accessibility.AccessibilityUtil.State.ON;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import android.content.Context;
+import android.platform.test.annotations.RequiresFlagsDisabled;
+import android.platform.test.annotations.RequiresFlagsEnabled;
+import android.platform.test.flag.junit.CheckFlagsRule;
+import android.platform.test.flag.junit.DeviceFlagsValueProvider;
+import android.provider.Settings;
+
+import androidx.test.core.app.ApplicationProvider;
+
+import com.android.settings.core.BasePreferenceController;
+
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RobolectricTestRunner;
+
+/** Tests for {@link ToggleForceInvertPreferenceController}. */
+@RunWith(RobolectricTestRunner.class)
+public class ToggleForceInvertPreferenceControllerTest {
+
+    @Rule
+    public final CheckFlagsRule mCheckFlagsRule = DeviceFlagsValueProvider.createCheckFlagsRule();
+
+    private final Context mContext = ApplicationProvider.getApplicationContext();
+    private ToggleForceInvertPreferenceController mController;
+
+    @Before
+    public void setUp() {
+        mController = new ToggleForceInvertPreferenceController(
+                mContext,
+                ColorAndMotionFragment.TOGGLE_FORCE_INVERT
+        );
+    }
+
+    @Test
+    @RequiresFlagsDisabled(FLAG_FORCE_INVERT_COLOR)
+    public void flagOff_getAvailabilityStatus_shouldReturnUnsupported() {
+        assertThat(mController.getAvailabilityStatus())
+                .isEqualTo(BasePreferenceController.UNSUPPORTED_ON_DEVICE);
+    }
+
+    @Test
+    @RequiresFlagsEnabled(FLAG_FORCE_INVERT_COLOR)
+    public void flagOn_getAvailabilityStatus_shouldReturnAvailable() {
+        assertThat(mController.getAvailabilityStatus())
+                .isEqualTo(BasePreferenceController.AVAILABLE);
+    }
+
+    @Test
+    public void settingOff_reflectsCorrectValue() {
+        setEnabled(false);
+        assertThat(mController.isChecked()).isFalse();
+    }
+
+    @Test
+    public void settingOn_reflectsCorrectValue() {
+        setEnabled(true);
+        assertThat(mController.isChecked()).isTrue();
+    }
+
+    @Test
+    public void onCheck_settingChanges() {
+        setEnabled(false);
+
+        mController.setChecked(true);
+        assertThat(isEnabled()).isTrue();
+
+        mController.setChecked(false);
+        assertThat(isEnabled()).isFalse();
+    }
+
+    private boolean isEnabled() {
+        return Settings.Secure.getInt(mContext.getContentResolver(),
+                Settings.Secure.ACCESSIBILITY_FORCE_INVERT_COLOR_ENABLED, /* def=*/ -1) == ON;
+    }
+
+    private void setEnabled(boolean enabled) {
+        Settings.Secure.putInt(mContext.getContentResolver(),
+                Settings.Secure.ACCESSIBILITY_FORCE_INVERT_COLOR_ENABLED, enabled ? ON : OFF);
+    }
+}