[VCN06] Support request background network

This will be mainly used by VCN management service which will
need to hold the networks but preserve the backgrounded-ness
of the networks.

Test: android.net.ConnectivityManagerTest#testRequestType
Test: android.net.cts.ConnectivityManagerTest#testRequestBackgroundNetwork /
      --rerun-until-failure 100
Test: ConnectivityServiceTest#testBackgroundNetworks
Test: m -j doc-comment-check-docs
Bug: 175662146
Change-Id: If9aaa87b7e71c2b695ac7b08858850e975b28bb6

2 files changed, 14 insertions, 3 deletions

diff --git a/tests/net/java/android/net/ConnectivityManagerTest.java b/tests/net/java/android/net/ConnectivityManagerTest.java
index f2dd27effe91..c2fddf3d9e82 100644
--- a/tests/net/java/android/net/ConnectivityManagerTest.java
+++ b/tests/net/java/android/net/ConnectivityManagerTest.java
@@ -32,6 +32,7 @@ import static android.net.NetworkCapabilities.TRANSPORT_BLUETOOTH;
 import static android.net.NetworkCapabilities.TRANSPORT_CELLULAR;
 import static android.net.NetworkCapabilities.TRANSPORT_ETHERNET;
 import static android.net.NetworkCapabilities.TRANSPORT_WIFI;
+import static android.net.NetworkRequest.Type.BACKGROUND_REQUEST;
 import static android.net.NetworkRequest.Type.REQUEST;
 import static android.net.NetworkRequest.Type.TRACK_DEFAULT;
 
@@ -368,6 +369,12 @@ public class ConnectivityManagerTest {
                 eq(TRACK_DEFAULT.ordinal()), any(), anyInt(), any(), eq(TYPE_NONE),
                 eq(testPkgName), eq(null));
         reset(mService);
+
+        manager.requestBackgroundNetwork(request, null, callback);
+        verify(mService).requestNetwork(eq(request.networkCapabilities),
+                eq(BACKGROUND_REQUEST.ordinal()), any(), anyInt(), any(), eq(TYPE_NONE),
+                eq(testPkgName), eq(null));
+        reset(mService);
     }
 
     static Message makeMessage(NetworkRequest req, int messageType) {
diff --git a/tests/net/java/com/android/server/ConnectivityServiceTest.java b/tests/net/java/com/android/server/ConnectivityServiceTest.java
index d73441afe119..83baeb5f34c9 100644
--- a/tests/net/java/com/android/server/ConnectivityServiceTest.java
+++ b/tests/net/java/com/android/server/ConnectivityServiceTest.java
@@ -3594,10 +3594,13 @@ public class ConnectivityServiceTest {
 
     @Test
     public void testBackgroundNetworks() throws Exception {
-        // Create a background request. We can't do this ourselves because ConnectivityService
-        // doesn't have an API for it. So just turn on mobile data always on.
-        setAlwaysOnNetworks(true);
+        // Create a cellular background request.
         grantUsingBackgroundNetworksPermissionForUid(Binder.getCallingUid());
+        final TestNetworkCallback cellBgCallback = new TestNetworkCallback();
+        mCm.requestBackgroundNetwork(new NetworkRequest.Builder()
+                .addTransportType(TRANSPORT_CELLULAR).build(), null, cellBgCallback);
+
+        // Make callbacks for monitoring.
         final NetworkRequest request = new NetworkRequest.Builder().build();
         final NetworkRequest fgRequest = new NetworkRequest.Builder()
                 .addCapability(NET_CAPABILITY_FOREGROUND).build();
@@ -3666,6 +3669,7 @@ public class ConnectivityServiceTest {
 
         mCm.unregisterNetworkCallback(callback);
         mCm.unregisterNetworkCallback(fgCallback);
+        mCm.unregisterNetworkCallback(cellBgCallback);
     }
 
     @Ignore // This test has instrinsic chances of spurious failures: ignore for continuous testing.