fix: avoiding error and including a test

tests/testterm.sas

@@ -2,8 +2,18 @@
   @file
   @brief term file for tests
 
+  <h4> SAS Macros </h4>
+  @li mp_assert.sas
+
 **/
 
+%mp_assert(
+  iftrue=(&syscc=0),
+  desc=Checking final error condition,
+  outds=work.test_results
+)
+
+
 %webout(OPEN)
 %webout(OBJ, TEST_RESULTS)
 %webout(CLOSE)