Support test skipping when power save modes aren't enabled.

Some classes of devices will not have auto power save modes enabled. On
those devices, we should skip tests that require the modes be enabled.

Bug: 240108412
Bug: 240630396
Test: Manually go through CTS-V "Ignore Battery Optimizations Test"
Test: atest CtsUsageStatsTestCases:UsageStatsTest
Change-Id: Icc64fbe75213386a1f41fae258e50c4032920b0a

apex/jobscheduler/service/java/com/android/server/usage/AppStandbyController.java

@@ -1543,8 +1543,10 @@ public class AppStandbyController
     @Override
     @StandbyBuckets public int getAppStandbyBucket(String packageName, int userId,
             long elapsedRealtime, boolean shouldObfuscateInstantApps) {
-        if (!mAppIdleEnabled || (shouldObfuscateInstantApps
+        if (!mAppIdleEnabled) {
-                && mInjector.isPackageEphemeral(userId, packageName))) {
+            return STANDBY_BUCKET_EXEMPTED;
+        }
+        if (shouldObfuscateInstantApps && mInjector.isPackageEphemeral(userId, packageName)) {
             return STANDBY_BUCKET_ACTIVE;
         }
 

core/api/test-current.txt

@@ -670,6 +670,7 @@ package android.app.usage {
 
   public final class UsageStatsManager {
     method public void forceUsageSourceSettingRead();
+    method public boolean isAppStandbyEnabled();
   }
 
 }
@@ -1795,6 +1796,7 @@ package android.os {
   }
 
   public final class PowerManager {
+    method public boolean areAutoPowerSaveModesEnabled();
     method @RequiresPermission(anyOf={android.Manifest.permission.MANAGE_LOW_POWER_STANDBY, android.Manifest.permission.DEVICE_POWER}) public void forceLowPowerStandbyActive(boolean);
     field public static final String ACTION_ENHANCED_DISCHARGE_PREDICTION_CHANGED = "android.os.action.ENHANCED_DISCHARGE_PREDICTION_CHANGED";
     field @RequiresPermission(android.Manifest.permission.DEVICE_POWER) public static final int SYSTEM_WAKELOCK = -2147483648; // 0x80000000

core/java/android/app/usage/IUsageStatsManager.aidl

@@ -44,6 +44,7 @@ interface IUsageStatsManager {
     UsageEvents queryEventsForPackageForUser(long beginTime, long endTime, int userId, String pkg, String callingPackage);
     @UnsupportedAppUsage(maxTargetSdk = 30, trackingBug = 170729553)
     void setAppInactive(String packageName, boolean inactive, int userId);
+    boolean isAppStandbyEnabled();
     @UnsupportedAppUsage(maxTargetSdk = 30, trackingBug = 170729553)
     boolean isAppInactive(String packageName, int userId, String callingPackage);
     void onCarrierPrivilegedAppsChanged();

core/java/android/app/usage/UsageStatsManager.java

@@ -641,6 +641,19 @@ public final class UsageStatsManager {
         return aggregatedStats;
     }
 
+    /**
+     * Returns whether the app standby bucket feature is enabled.
+     * @hide
+     */
+    @TestApi
+    public boolean isAppStandbyEnabled() {
+        try {
+            return mService.isAppStandbyEnabled();
+        } catch (RemoteException e) {
+            throw e.rethrowFromSystemServer();
+        }
+    }
+
     /**
      * Returns whether the specified app is currently considered inactive. This will be true if the
      * app hasn't been used directly or indirectly for a period of time defined by the system. This

core/java/android/os/IPowerManager.aidl

@@ -53,6 +53,7 @@ interface IPowerManager
     float getBrightnessConstraint(int constraint);
     @UnsupportedAppUsage
     boolean isInteractive();
+    boolean areAutoPowerSaveModesEnabled();
     boolean isPowerSaveMode();
     PowerSaveState getPowerSaveState(int serviceType);
     boolean setPowerSaveModeEnabled(boolean mode);

core/java/android/os/PowerManager.java

@@ -1809,6 +1809,21 @@ public final class PowerManager {
         }
     }
 
+    /**
+     * Returns true if the platform has auto power save modes (eg. Doze & app standby) enabled.
+     * This doesn't necessarily mean that the individual features are enabled. For example, if this
+     * returns true, Doze might be enabled while app standby buckets remain disabled.
+     * @hide
+     */
+    @TestApi
+    public boolean areAutoPowerSaveModesEnabled() {
+        try {
+            return mService.areAutoPowerSaveModesEnabled();
+        } catch (RemoteException e) {
+            throw e.rethrowFromSystemServer();
+        }
+    }
+
     /**
      * Returns true if the device is currently in power save mode.  When in this mode,
      * applications should reduce their functionality in order to conserve battery as

services/core/java/com/android/server/power/PowerManagerService.java

@@ -5787,6 +5787,17 @@ public final class PowerManagerService extends SystemService
             }
         }
 
+        @Override // Binder call
+        public boolean areAutoPowerSaveModesEnabled() {
+            final long ident = Binder.clearCallingIdentity();
+            try {
+                return mContext.getResources().getBoolean(
+                        com.android.internal.R.bool.config_enableAutoPowerModes);
+            } finally {
+                Binder.restoreCallingIdentity(ident);
+            }
+        }
+
         @Override // Binder call
         public boolean isPowerSaveMode() {
             final long ident = Binder.clearCallingIdentity();

services/usage/java/com/android/server/usage/UsageStatsService.java

@@ -2288,6 +2288,11 @@ public class UsageStatsService extends SystemService implements
             }
         }
 
+        @Override
+        public boolean isAppStandbyEnabled() {
+            return mAppStandby.isAppIdleEnabled();
+        }
+
         @Override
         public boolean isAppInactive(String packageName, int userId, String callingPackage) {
             final int callingUid = Binder.getCallingUid();