Check and skip certain operations if they are unsupported.

Fixes: 178334463
Test: com.android.cts.net.HostsideRestrictBackgroundNetworkTests#testMeteredNetworkAccess_expeditedJob
Ignore-AOSP-First: Expedited jobs are not available in AOSP yet
Change-Id: Ie68e17063454e7feeffc93b20b1b8fbb276e837f

tests/cts/hostside/app/src/com/android/cts/net/hostside/AbstractRestrictBackgroundNetworkTestCase.java

@@ -25,6 +25,8 @@ import static com.android.cts.net.hostside.NetworkPolicyTestUtils.executeShellCo
 import static com.android.cts.net.hostside.NetworkPolicyTestUtils.getConnectivityManager;
 import static com.android.cts.net.hostside.NetworkPolicyTestUtils.getContext;
 import static com.android.cts.net.hostside.NetworkPolicyTestUtils.getInstrumentation;
+import static com.android.cts.net.hostside.NetworkPolicyTestUtils.isAppStandbySupported;
+import static com.android.cts.net.hostside.NetworkPolicyTestUtils.isBatterySaverSupported;
 import static com.android.cts.net.hostside.NetworkPolicyTestUtils.isDozeModeSupported;
 import static com.android.cts.net.hostside.NetworkPolicyTestUtils.restrictBackgroundValueToString;
 import static com.android.cts.net.hostside.NetworkPolicyTestUtils.runSatisfiedJob;
@@ -653,6 +655,9 @@ public abstract class AbstractRestrictBackgroundNetworkTestCase {
     }
 
     protected void setBatterySaverMode(boolean enabled) throws Exception {
+        if (!isBatterySaverSupported()) {
+            return;
+        }
         Log.i(TAG, "Setting Battery Saver Mode to " + enabled);
         if (enabled) {
             turnBatteryOn();
@@ -664,8 +669,9 @@ public abstract class AbstractRestrictBackgroundNetworkTestCase {
     }
 
     protected void setDozeMode(boolean enabled) throws Exception {
-        // Check doze mode is supported.
+        if (!isDozeModeSupported()) {
-        assertTrue("Device does not support Doze Mode", isDozeModeSupported());
+            return;
+        }
 
         Log.i(TAG, "Setting Doze Mode to " + enabled);
         if (enabled) {
@@ -685,12 +691,18 @@ public abstract class AbstractRestrictBackgroundNetworkTestCase {
     }
 
     protected void setAppIdle(boolean enabled) throws Exception {
+        if (!isAppStandbySupported()) {
+            return;
+        }
         Log.i(TAG, "Setting app idle to " + enabled);
         executeSilentShellCommand("am set-inactive " + TEST_APP2_PKG + " " + enabled );
         assertAppIdle(enabled);
     }
 
     protected void setAppIdleNoAssert(boolean enabled) throws Exception {
+        if (!isAppStandbySupported()) {
+            return;
+        }
         Log.i(TAG, "Setting app idle to " + enabled);
         executeSilentShellCommand("am set-inactive " + TEST_APP2_PKG + " " + enabled );
     }

tests/cts/hostside/app/src/com/android/cts/net/hostside/NetworkPolicyTestUtils.java

@@ -86,11 +86,11 @@ public class NetworkPolicyTestUtils {
         if (mDataSaverSupported == null) {
             assertMyRestrictBackgroundStatus(RESTRICT_BACKGROUND_STATUS_DISABLED);
             try {
-                setRestrictBackground(true);
+                setRestrictBackgroundInternal(true);
                 mDataSaverSupported = !isMyRestrictBackgroundStatus(
                         RESTRICT_BACKGROUND_STATUS_DISABLED);
             } finally {
-                setRestrictBackground(false);
+                setRestrictBackgroundInternal(false);
             }
         }
         return mDataSaverSupported;
@@ -213,6 +213,13 @@ public class NetworkPolicyTestUtils {
     }
 
     public static void setRestrictBackground(boolean enabled) {
+        if (!isDataSaverSupported()) {
+            return;
+        }
+        setRestrictBackgroundInternal(enabled);
+    }
+
+    private static void setRestrictBackgroundInternal(boolean enabled) {
         executeShellCommand("cmd netpolicy set restrict-background " + enabled);
         final String output = executeShellCommand("cmd netpolicy get restrict-background");
         final String expectedSuffix = enabled ? "enabled" : "disabled";