Check configuration in combined attach to determine CS network

Bug: 266030361
Test: atest EmergencyCallDomainSelectorTest
Change-Id: I50791418acc7160c7f76a7a5c80368be8df4e690
diff --git a/src/com/android/services/telephony/domainselection/EmergencyCallDomainSelector.java b/src/com/android/services/telephony/domainselection/EmergencyCallDomainSelector.java
index 8100e63..fa11a5d 100644
--- a/src/com/android/services/telephony/domainselection/EmergencyCallDomainSelector.java
+++ b/src/com/android/services/telephony/domainselection/EmergencyCallDomainSelector.java
@@ -747,7 +747,7 @@
 
         if ((regResult.getAccessNetwork() == EUTRAN)
                 && ((regResult.getDomain() & NetworkRegistrationInfo.DOMAIN_CS) > 0)) {
-            return UTRAN;
+            if (ratList.contains(UTRAN)) return UTRAN;
         }
 
         return UNKNOWN;
diff --git a/tests/src/com/android/services/telephony/domainselection/EmergencyCallDomainSelectorTest.java b/tests/src/com/android/services/telephony/domainselection/EmergencyCallDomainSelectorTest.java
index aedfe9e..c50c6b5 100644
--- a/tests/src/com/android/services/telephony/domainselection/EmergencyCallDomainSelectorTest.java
+++ b/tests/src/com/android/services/telephony/domainselection/EmergencyCallDomainSelectorTest.java
@@ -316,6 +316,28 @@
     }
 
     @Test
+    public void testNoCsCombinedImsNotRegisteredSelectPs() throws Exception {
+        PersistableBundle bundle = getDefaultPersistableBundle();
+        bundle.putIntArray(KEY_EMERGENCY_OVER_CS_SUPPORTED_ACCESS_NETWORK_TYPES_INT_ARRAY,
+                new int[0]);
+        when(mCarrierConfigManager.getConfigForSubId(anyInt())).thenReturn(bundle);
+
+        createSelector(SLOT_0_SUB_ID);
+        unsolBarringInfoChanged(false);
+
+        EmergencyRegResult regResult = getEmergencyRegResult(EUTRAN, REGISTRATION_STATE_HOME,
+                NetworkRegistrationInfo.DOMAIN_CS | NetworkRegistrationInfo.DOMAIN_PS,
+                true, true, 0, 0, "", "");
+        SelectionAttributes attr = getSelectionAttributes(SLOT_0, SLOT_0_SUB_ID, regResult);
+        mDomainSelector.selectDomain(attr, mTransportSelectorCallback);
+        processAllMessages();
+
+        bindImsServiceUnregistered();
+
+        verifyPsDialed();
+    }
+
+    @Test
     public void testDefaultCombinedImsNotRegisteredBarredSelectCs() throws Exception {
         createSelector(SLOT_0_SUB_ID);
         unsolBarringInfoChanged(true);