Add tests for parameter validation in MPI module
diff --git a/tests/suites/test_suite_mpi.data b/tests/suites/test_suite_mpi.data
index 6ea3b29..ff25a6f 100644
--- a/tests/suites/test_suite_mpi.data
+++ b/tests/suites/test_suite_mpi.data
@@ -1,3 +1,6 @@
+Parameter validation
+mpi_invalid_param:
+
 Arguments with no value
 mpi_null: