Add warning message when power save mode is enabled for attention settings fragment

Test: locally with flame, make RunSettingsRoboTests -j96 ROBOTEST_FILTER=AdaptiveSleepPreferenceControllerTest,AdaptiveSleepBatterySaverPreferenceControllerTest

Bug: 186690152
Change-Id: I42e018a8cf48166a8250fac9510a8882efb58568

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

@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2021 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 androidx.test.core.app.ApplicationProvider.getApplicationContext;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+import android.content.pm.PackageManager;
+
+import androidx.preference.PreferenceScreen;
+
+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 AdaptiveSleepBatterySaverPreferenceControllerTest {
+    private Context mContext;
+    private AdaptiveSleepBatterySaverPreferenceController mController;
+
+    @Mock
+    private PackageManager mPackageManager;
+    @Mock
+    private PreferenceScreen mScreen;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+        mContext = spy(getApplicationContext());
+
+        doReturn(mPackageManager).when(mContext).getPackageManager();
+        when(mPackageManager.getAttentionServicePackageName()).thenReturn("some.package");
+        when(mPackageManager.checkPermission(any(), any())).thenReturn(
+                PackageManager.PERMISSION_GRANTED);
+
+        mController = spy(new AdaptiveSleepBatterySaverPreferenceController(mContext));
+        when(mController.isPowerSaveMode()).thenReturn(false);
+    }
+
+    @Test
+    public void addToScreen_normalCase_hidePreference() {
+        mController.addToScreen(mScreen);
+
+        assertThat(mController.mPreference.isVisible()).isFalse();
+    }
+
+    @Test
+    public void addToScreen_powerSaveEnabled_showPreference() {
+        when(mController.isPowerSaveMode()).thenReturn(true);
+
+        mController.addToScreen(mScreen);
+
+        assertThat(mController.mPreference.isVisible()).isTrue();
+    }
+}

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

@@ -83,9 +83,10 @@ public class AdaptiveSleepPreferenceControllerTest {
         when(mRestrictionUtils.checkIfRestrictionEnforced(any(),
                 eq(UserManager.DISALLOW_CONFIG_SCREEN_TIMEOUT))).thenReturn(null);
 
-        mController = new AdaptiveSleepPreferenceController(mContext, mRestrictionUtils);
+        mController = spy(new AdaptiveSleepPreferenceController(mContext, mRestrictionUtils));
         mController.initializePreference();
         when(mController.isCameraLocked()).thenReturn(false);
+        when(mController.isPowerSaveMode()).thenReturn(false);
     }
 
     @Test
@@ -174,4 +175,14 @@ public class AdaptiveSleepPreferenceControllerTest {
 
         assertThat(mController.mPreference.isEnabled()).isFalse();
     }
+
+    @Test
+    public void addToScreen_powerSaveEnabled_disablePreference() {
+        when(mController.isPowerSaveMode()).thenReturn(true);
+
+        mController.addToScreen(mScreen);
+
+        assertThat(mController.mPreference.isEnabled()).isFalse();
+    }
+
 }