Add Battery skeleton page and corresponding TS flag

Test: atest
Bug: 372774754
Flag: com.android.settings.flags.catalyst_power_usage_summary_screen
Change-Id: I2ce7581d0f7fdce3516fef415efdf562c63e38d4

aconfig/catalyst/battery.aconfig

@@ -1,6 +1,13 @@
 package: "com.android.settings.flags"
 container: "system"
 
+flag {
+  name: "catalyst_power_usage_summary_screen"
+  namespace: "android_settings"
+  description: "Flag for Battery screen"
+  bug: "323791114"
+}
+
 flag {
   name: "catalyst_battery_saver_screen"
   namespace: "android_settings"

src/com/android/settings/fuelgauge/batteryusage/PowerUsageSummary.java

@@ -27,6 +27,8 @@ import android.os.Bundle;
 import android.os.Handler;
 import android.provider.Settings.Global;
 
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 import androidx.annotation.VisibleForTesting;
 import androidx.loader.app.LoaderManager;
 import androidx.loader.content.Loader;
@@ -270,4 +272,9 @@ public class PowerUsageSummary extends PowerUsageBase
 
     public static final BaseSearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
             new BaseSearchIndexProvider(R.xml.power_usage_summary);
+
+    @Override
+    public @Nullable String getPreferenceScreenBindingKey(@NonNull Context context) {
+        return PowerUsageSummaryScreen.KEY;
+    }
 }

src/com/android/settings/fuelgauge/batteryusage/PowerUsageSummaryScreen.kt

@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2024 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.batteryusage
+
+import android.content.Context
+import com.android.settings.R
+import com.android.settings.flags.Flags
+import com.android.settingslib.metadata.PreferenceAvailabilityProvider
+import com.android.settingslib.metadata.PreferenceIconProvider
+import com.android.settingslib.metadata.ProvidePreferenceScreen
+import com.android.settingslib.metadata.preferenceHierarchy
+import com.android.settingslib.preference.PreferenceScreenCreator
+
+@ProvidePreferenceScreen
+class PowerUsageSummaryScreen : PreferenceScreenCreator,
+    PreferenceAvailabilityProvider,
+    PreferenceIconProvider {
+    override val key: String
+        get() = KEY
+
+    override val title: Int
+        get() = R.string.power_usage_summary_title
+
+    override val keywords: Int
+        get() = R.string.keywords_battery
+
+    override fun isFlagEnabled(context: Context) = Flags.catalystPowerUsageSummaryScreen()
+
+    override fun hasCompleteHierarchy() = false
+
+    override fun fragmentClass() = PowerUsageSummary::class.java
+
+    override fun isAvailable(context: Context) =
+        context.resources.getBoolean(R.bool.config_show_top_level_battery)
+
+    override fun getIcon(context: Context): Int =
+        if (Flags.homepageRevamp()) {
+            R.drawable.ic_settings_battery_filled
+        } else {
+            R.drawable.ic_settings_battery_white
+        }
+
+
+    override fun getPreferenceHierarchy(context: Context) = preferenceHierarchy(this) {}
+
+    companion object {
+        const val KEY = "power_usage_summary_screen"
+    }
+}

tests/robotests/src/com/android/settings/fuelgauge/batteryusage/PowerUsageSummaryScreenTest.kt

@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2024 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.batteryusage
+
+import android.content.ContextWrapper
+import android.content.res.Resources
+import android.platform.test.annotations.DisableFlags
+import android.platform.test.annotations.EnableFlags
+import com.android.settings.R
+import com.android.settings.flags.Flags
+import com.android.settingslib.preference.CatalystScreenTestCase
+import com.google.common.truth.Truth.assertThat
+import org.junit.Test
+import org.mockito.ArgumentMatchers.anyInt
+import org.mockito.kotlin.doReturn
+import org.mockito.kotlin.mock
+import org.mockito.kotlin.stub
+
+class PowerUsageSummaryScreenTest : CatalystScreenTestCase() {
+
+    override val preferenceScreenCreator = PowerUsageSummaryScreen()
+
+    override val flagName: String
+        get() = Flags.FLAG_CATALYST_POWER_USAGE_SUMMARY_SCREEN
+
+    private val mockResources = mock<Resources>()
+
+    private val contextWrapper =
+        object : ContextWrapper(context) {
+            override fun getResources(): Resources = mockResources
+        }
+
+    @Test
+    fun key() {
+        assertThat(preferenceScreenCreator.key).isEqualTo(PowerUsageSummaryScreen.KEY)
+    }
+
+    @Test
+    fun isAvailable_configTrue_shouldReturnTrue() {
+        mockResources.stub { on { getBoolean(anyInt()) } doReturn true }
+
+        assertThat(preferenceScreenCreator.isAvailable(contextWrapper)).isTrue()
+    }
+
+    @Test
+    fun isAvailable_configFalse_shouldReturnFalse() {
+        mockResources.stub { on { getBoolean(anyInt()) } doReturn false }
+
+        assertThat(preferenceScreenCreator.isAvailable(contextWrapper)).isFalse()
+    }
+
+    @Test
+    @EnableFlags(Flags.FLAG_HOMEPAGE_REVAMP)
+    fun getIcon_whenHomePageRevampFlagOn() {
+        assertThat(preferenceScreenCreator.getIcon(contextWrapper)).isEqualTo(R.drawable.ic_settings_battery_filled)
+    }
+
+    @Test
+    @DisableFlags(Flags.FLAG_HOMEPAGE_REVAMP)
+    fun getIcon_whenHomePageRevampFlagOff() {
+        assertThat(preferenceScreenCreator.getIcon(contextWrapper)).isEqualTo(R.drawable.ic_settings_battery_white)
+    }
+
+    override fun migration() {}
+}