Add WifiEntry#isDefaultNetwork()

Add a method WifiEntry#isDefaultNetwork() to return whether or not the
WifiEntry is being used as the default route or not.

Bug: 191090765
Test: atest WifiPickerTrackerTest
Change-Id: I76c985c32917dd658d0cd544a1aa4b8c4b554c66

3 files changed, 45 insertions, 0 deletions

diff --git a/libs/WifiTrackerLib/src/com/android/wifitrackerlib/WifiEntry.java b/libs/WifiTrackerLib/src/com/android/wifitrackerlib/WifiEntry.java
index e194adcb3..6ec5d8ba3 100644
--- a/libs/WifiTrackerLib/src/com/android/wifitrackerlib/WifiEntry.java
+++ b/libs/WifiTrackerLib/src/com/android/wifitrackerlib/WifiEntry.java
@@ -342,6 +342,14 @@ public class WifiEntry implements Comparable<WifiEntry> {
         return mIsValidated;
     }
 
+    /**
+     * Returns whether this network is the default network or not (i.e. this network is the one
+     * currently being used to provide internet connection).
+     */
+    public boolean isDefaultNetwork() {
+        return mIsDefaultNetwork;
+    }
+
     /** Returns the speed value of the network defined by the SPEED constants */
     @Speed
     public int getSpeed() {
diff --git a/libs/WifiTrackerLib/src/com/android/wifitrackerlib/WifiPickerTracker.java b/libs/WifiTrackerLib/src/com/android/wifitrackerlib/WifiPickerTracker.java
index aa65ca4ad..a479b0292 100644
--- a/libs/WifiTrackerLib/src/com/android/wifitrackerlib/WifiPickerTracker.java
+++ b/libs/WifiTrackerLib/src/com/android/wifitrackerlib/WifiPickerTracker.java
@@ -316,6 +316,9 @@ public class WifiPickerTracker extends BaseWifiTracker {
             mConnectedWifiEntry.setIsLowQuality(mIsWifiValidated && mIsCellDefaultRoute);
         }
         if (mMergedCarrierEntry != null) {
+            if (mMergedCarrierEntry.getConnectedState() == CONNECTED_STATE_CONNECTED) {
+                mMergedCarrierEntry.setIsDefaultNetwork(mIsWifiDefaultRoute);
+            }
             mMergedCarrierEntry.updateIsCellDefaultRoute(mIsCellDefaultRoute);
         }
     }
diff --git a/libs/WifiTrackerLib/tests/src/com/android/wifitrackerlib/WifiPickerTrackerTest.java b/libs/WifiTrackerLib/tests/src/com/android/wifitrackerlib/WifiPickerTrackerTest.java
index 76408a8f4..2819fcfa3 100644
--- a/libs/WifiTrackerLib/tests/src/com/android/wifitrackerlib/WifiPickerTrackerTest.java
+++ b/libs/WifiTrackerLib/tests/src/com/android/wifitrackerlib/WifiPickerTrackerTest.java
@@ -1180,4 +1180,38 @@ public class WifiPickerTrackerTest {
         // 1 open config + 2 split configs with same network ID should be treated as 2 networks.
         assertThat(wifiPickerTracker.getNumSavedNetworks()).isEqualTo(2);
     }
+
+    /**
+     * Tests that the MergedCarrierEntry is the default network when it is connected and Wifi is
+     * the default network.
+     */
+    @Test
+    public void testGetMergedCarrierEntry_wifiIsDefault_entryIsDefaultNetwork() {
+        final int subId = 1;
+        when(mMockWifiInfo.isCarrierMerged()).thenReturn(true);
+        when(mMockWifiInfo.getSubscriptionId()).thenReturn(subId);
+        when(mMockNetworkInfo.getDetailedState()).thenReturn(NetworkInfo.DetailedState.CONNECTED);
+        final WifiPickerTracker wifiPickerTracker = createTestWifiPickerTracker();
+        wifiPickerTracker.onStart();
+        mTestLooper.dispatchAll();
+        verify(mMockContext).registerReceiver(mBroadcastReceiverCaptor.capture(),
+                any(), any(), any());
+        final Intent intent = new Intent(TelephonyManager.ACTION_DEFAULT_DATA_SUBSCRIPTION_CHANGED);
+        intent.putExtra("subscription", subId);
+        mBroadcastReceiverCaptor.getValue().onReceive(mMockContext, intent);
+        verify(mMockConnectivityManager)
+                .registerDefaultNetworkCallback(mDefaultNetworkCallbackCaptor.capture(), any());
+        MergedCarrierEntry mergedCarrierEntry = wifiPickerTracker.getMergedCarrierEntry();
+        assertThat(mergedCarrierEntry.getConnectedState())
+                .isEqualTo(WifiEntry.CONNECTED_STATE_CONNECTED);
+        // Wifi isn't default yet, so isDefaultNetwork returns false
+        assertThat(mergedCarrierEntry.isDefaultNetwork()).isFalse();
+
+        mDefaultNetworkCallbackCaptor.getValue().onCapabilitiesChanged(mMockNetwork,
+                new NetworkCapabilities.Builder()
+                        .addTransportType(NetworkCapabilities.TRANSPORT_WIFI).build());
+
+        // Now Wifi is default, so isDefaultNetwork returns true
+        assertThat(mergedCarrierEntry.isDefaultNetwork()).isTrue();
+    }
 }