Merge "Fix dark theme and battery saver interaction" into qt-dev

am: ba5964d99d

Change-Id: I83ee0c60e08af8f2166eb3f01a30baa975a86600

tests/robotests/src/com/android/settings/display/DarkUIPreferenceControllerTest.java

@@ -0,0 +1,78 @@
+/*
+ * 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.display;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+import android.os.Handler;
+import android.os.IPowerManager;
+import android.os.PowerManager;
+
+import androidx.fragment.app.Fragment;
+import androidx.preference.PreferenceScreen;
+import androidx.preference.SwitchPreference;
+
+import org.junit.Assert;
+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 DarkUIPreferenceControllerTest {
+
+    private DarkUIPreferenceController mController;
+    private Context mContext;
+    @Mock
+    private Fragment mFragment;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+        mContext = spy(RuntimeEnvironment.application);
+        mController = spy(new DarkUIPreferenceController(mContext, "dark_ui_mode"));
+        mController.setParentFragment(mFragment);
+        mController.mPreference = new SwitchPreference(mContext);
+        mController.onStart();
+    }
+
+    @Test
+    public void batterySaverToggles_disabledStateUpdates() {
+        doReturn(true).when(mController).isPowerSaveMode();
+        mController.updateEnabledStateIfNeeded();
+        assertThat(mController.mPreference.isEnabled()).isFalse();
+
+        doReturn(false).when(mController).isPowerSaveMode();
+        mController.updateEnabledStateIfNeeded();
+        assertThat(mController.mPreference.isEnabled()).isTrue();
+
+        doReturn(true).when(mController).isPowerSaveMode();
+        mController.updateEnabledStateIfNeeded();
+        assertThat(mController.mPreference.isEnabled()).isFalse();
+    }
+}