fix: tidyup of mm_getauthinfo.sas

tests/sas9only/mm_getauthinfo.test.sas

@@ -0,0 +1,21 @@
+/**
+  @file
+  @brief Testing mm_getauthinfo macro
+
+  <h4> SAS Macros </h4>
+  @li mf_existds.sas
+  @li mm_getauthinfo.sas
+  @li mp_assertscope.sas
+
+**/
+
+
+%mp_assertscope(SNAPSHOT)
+%mm_getauthinfo(outds=auths)
+%mp_assertscope(COMPARE)
+
+
+%mp_assert(
+  iftrue=(%mf_existds(work.auths)=1),
+  desc=Check if the auths dataset was created
+)