CtsHostsideNetworkTests: Skip unsupported tests.

If appStandby is not enabled, then
testAppIdleAndBatterySaver_tempPowerSaveWhitelists is not supported.

Fixes: 79942156
Test: cts-tradefed run singleCommand cts-dev -m CtsHostsideNetworkTests -t \
      com.android.cts.net.HostsideRestrictBackgroundNetworkTests

Change-Id: I2f4012ff2cf42481e089d7fc33930258e501ddbf
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/MixedModesTest.java b/tests/cts/hostside/app/src/com/android/cts/net/hostside/MixedModesTest.java
index 76332be..87f9d77 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/MixedModesTest.java
+++ b/tests/cts/hostside/app/src/com/android/cts/net/hostside/MixedModesTest.java
@@ -57,18 +57,22 @@
         }
     }
 
+    @Override
+    public boolean isSupported() throws Exception {
+        if (!isDozeModeEnabled()) {
+            Log.i(TAG, "Skipping " + getClass() + "." + getName()
+                    + "() because device does not support Doze Mode");
+            return false;
+        }
+        return true;
+    }
+
     /**
      * Tests all DS ON and BS ON scenarios from network-policy-restrictions.md on metered networks.
      */
     public void testDataAndBatterySaverModes_meteredNetwork() throws Exception {
         if (!isSupported()) return;
 
-        if (!isDozeModeEnabled()) {
-            Log.w(TAG, "testDataAndBatterySaverModes_meteredNetwork() skipped because "
-                    + "device does not support Doze Mode");
-            return;
-        }
-
         Log.i(TAG, "testDataAndBatterySaverModes_meteredNetwork() tests");
         if (!setMeteredNetwork()) {
             Log.w(TAG, "testDataAndBatterySaverModes_meteredNetwork() skipped because "
@@ -139,12 +143,6 @@
     public void testDataAndBatterySaverModes_nonMeteredNetwork() throws Exception {
         if (!isSupported()) return;
 
-        if (!isDozeModeEnabled()) {
-            Log.w(TAG, "testDataAndBatterySaverModes_nonMeteredNetwork() skipped because "
-                    + "device does not support Doze Mode");
-            return;
-        }
-
         if (!setUnmeteredNetwork()) {
             Log.w(TAG, "testDataAndBatterySaverModes_nonMeteredNetwork() skipped because network"
                     + " is metered");
@@ -211,11 +209,6 @@
         if (!isSupported()) {
             return;
         }
-        if (!isDozeModeEnabled()) {
-            Log.i(TAG, "Skipping " + getClass() + "." + getName()
-                    + "() because device does not support Doze Mode");
-            return;
-        }
 
         setBatterySaverMode(true);
         setDozeMode(true);
@@ -246,11 +239,6 @@
         if (!isSupported()) {
             return;
         }
-        if (!isDozeModeEnabled()) {
-            Log.i(TAG, "Skipping " + getClass() + "." + getName()
-                    + "() because device does not support Doze Mode");
-            return;
-        }
 
         setDozeMode(true);
         setAppIdle(true);
@@ -277,11 +265,6 @@
         if (!isSupported()) {
             return;
         }
-        if (!isDozeModeEnabled()) {
-            Log.i(TAG, "Skipping " + getClass() + "." + getName()
-                    + "() because device does not support Doze Mode");
-            return;
-        }
 
         setDozeMode(true);
         setAppIdle(true);