--- a/core_testing1/collatz_test1.scala	Wed Nov 01 15:01:32 2023 +0000
+++ b/core_testing1/collatz_test1.scala	Thu Nov 02 11:32:10 2023 +0000
@@ -1,8 +1,10 @@
 
-import C1._
+def urbanmain() = {
+  import C1._
 
-assert(collatz(1) == 0) 
-assert(collatz(6) == 8)
-assert(collatz(9) == 19)
+  assert(collatz(1) == 0) 
+  assert(collatz(6) == 8)
+  assert(collatz(9) == 19)
 
+}