Add summary text for more top level setting tiles

- Connected devices
- App & notifs
- Battery

Bug: 110405144
Test: robotests
Change-Id: Ife44f7c5165483a1bad903ce90a241108ab5da25

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

@@ -0,0 +1,53 @@
+/*
+ * 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.android.settings.fuelgauge.TopLevelBatteryPreferenceController.getDashboardLabel;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import android.content.Context;
+
+import com.android.settings.testutils.SettingsRobolectricTestRunner;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RuntimeEnvironment;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+public class TopLevelBatteryPreferenceControllerTest {
+
+    private Context mContext;
+
+    @Before
+    public void setUp() {
+        mContext = RuntimeEnvironment.application;
+    }
+
+    @Test
+    public void getDashboardLabel_returnsCorrectLabel() {
+        BatteryInfo info = new BatteryInfo();
+        info.batteryPercentString = "3%";
+        assertThat(getDashboardLabel(mContext, info))
+                .isEqualTo(info.batteryPercentString);
+
+        info.remainingLabel = "Phone will shut down soon";
+        assertThat(getDashboardLabel(mContext, info))
+                .isEqualTo("3% - Phone will shut down soon");
+    }
+}