Add smart battery page for battery settings

This page contains prefs for smart battery and app restriction.

Bug: 71502850
Test: RunSettingsRoboTests

Change-Id: I194af30cbc7b2496b10098fcb67f1116e0722310

tests/robotests/src/com/android/settings/fuelgauge/RestrictAppPreferenceControllerTest.java

@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2018 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.fuelgauge;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Matchers.any;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.spy;
+
+import android.app.AppOpsManager;
+import android.content.Context;
+import android.support.v7.preference.Preference;
+
+import com.android.settings.TestConfig;
+
+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;
+import org.robolectric.annotation.Config;
+
+import java.util.ArrayList;
+import java.util.List;
+
+@RunWith(RobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public class RestrictAppPreferenceControllerTest {
+
+    @Mock
+    private AppOpsManager mAppOpsManager;
+    @Mock
+    private AppOpsManager.PackageOps mPackageOps;
+    private List<AppOpsManager.PackageOps> mPackageOpsList;
+    private RestrictAppPreferenceController mRestrictAppPreferenceController;
+    private Preference mPreference;
+    private Context mContext;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+
+        mContext = spy(RuntimeEnvironment.application);
+        doReturn(mAppOpsManager).when(mContext).getSystemService(Context.APP_OPS_SERVICE);
+        mRestrictAppPreferenceController = new RestrictAppPreferenceController(mContext);
+        mPackageOpsList = new ArrayList<>();
+        mPreference = new Preference(mContext);
+    }
+
+    @Test
+    public void testUpdateState_oneApp_showCorrectSummary() {
+        mPackageOpsList.add(mPackageOps);
+        doReturn(mPackageOpsList).when(mAppOpsManager).getPackagesForOps(any());
+
+        mRestrictAppPreferenceController.updateState(mPreference);
+
+        assertThat(mPreference.getSummary()).isEqualTo("1 app");
+    }
+
+    @Test
+    public void testUpdateState_twoApps_showCorrectSummary() {
+        mPackageOpsList.add(mPackageOps);
+        mPackageOpsList.add(mPackageOps);
+        doReturn(mPackageOpsList).when(mAppOpsManager).getPackagesForOps(any());
+
+        mRestrictAppPreferenceController.updateState(mPreference);
+
+        assertThat(mPreference.getSummary()).isEqualTo("2 apps");
+    }
+
+}