Merge changes from topic "testStatsProvider-cp" am: 8dc319b30f

Original change: https://android-review.googlesource.com/c/platform/frameworks/libs/net/+/1843374

Change-Id: Ifd7c922d474aa701e53bd2393495a4cfaef7ecb6
diff --git a/staticlibs/testutils/devicetests/com/android/testutils/TestableNetworkStatsProvider.kt b/staticlibs/testutils/devicetests/com/android/testutils/TestableNetworkStatsProvider.kt
index 8477151..be5c9b2 100644
--- a/staticlibs/testutils/devicetests/com/android/testutils/TestableNetworkStatsProvider.kt
+++ b/staticlibs/testutils/devicetests/com/android/testutils/TestableNetworkStatsProvider.kt
@@ -31,11 +31,15 @@
     sealed class CallbackType {
         data class OnRequestStatsUpdate(val token: Int) : CallbackType()
         data class OnSetWarningAndLimit(
-            val iface: String?,
+            val iface: String,
             val warningBytes: Long,
             val limitBytes: Long
         ) : CallbackType()
-        data class OnSetLimit(val iface: String?, val limitBytes: Long) : CallbackType()
+        data class OnSetLimit(val iface: String, val limitBytes: Long) : CallbackType() {
+            // Add getter for backward compatibility since old tests do not recognize limitBytes.
+            val quotaBytes: Long
+                get() = limitBytes
+        }
         data class OnSetAlert(val quotaBytes: Long) : CallbackType()
     }
 
@@ -68,7 +72,7 @@
         return event.token
     }
 
-    fun expectOnSetLimit(iface: String?, quotaBytes: Long, timeout: Long = defaultTimeoutMs) {
+    fun expectOnSetLimit(iface: String, quotaBytes: Long, timeout: Long = defaultTimeoutMs) {
         assertEquals(CallbackType.OnSetLimit(iface, quotaBytes), history.poll(timeout))
     }