fix: removing bug introduced to mp_getddl and adding a test to prevent regression

all.sas

@@ -4419,8 +4419,8 @@ run;
 )/*/STORE SOURCE*/;
 
 /* check fileref is assigned */
-%if %mf_existfileref(&outref)=0 %then %do;
-  filename &outref temp ;
+%if %mf_existfileref(&fref)=0 %then %do;
+  filename &fref temp ;
 %end;
 
 %if %length(&libref)=0 %then %let libref=WORK;
@@ -5158,8 +5158,7 @@ create table &outds (rename=(
   @li mf_getvartype.sas
 
   @param [in] libds dataset to hash
-  @param [in] salt= Provide a salt (could be, for instance, the name of the
-    dataset). Max 32 chars.
+  @param [in] salt= Provide a salt (could be, for instance, the dataset name)
   @param [out] outds= (work.mf_hashdataset) The output dataset to create. This
   will contain one column (hashkey) with one observation (a hex32.
   representation of the input hash)
@@ -5194,7 +5193,7 @@ create table &outds (rename=(
     %let varlist=%mf_getvarlist(&libds);
     data &outds(rename=(&keyvar=hashkey) keep=&keyvar);
       length &prevkeyvar &keyvar $32;
-      retain &prevkeyvar "&salt";
+      retain &prevkeyvar "%sysfunc(md5(%str(&salt)),$hex32.)";
       set &libds end=&lastvar;
       /* hash should include previous row */
       &keyvar=put(md5(&prevkeyvar

base/mp_getddl.sas

@@ -38,8 +38,8 @@
 )/*/STORE SOURCE*/;
 
 /* check fileref is assigned */
-%if %mf_existfileref(&outref)=0 %then %do;
-  filename &outref temp ;
+%if %mf_existfileref(&fref)=0 %then %do;
+  filename &fref temp ;
 %end;
 
 %if %length(&libref)=0 %then %let libref=WORK;

base/mp_hashdataset.sas

@@ -20,8 +20,7 @@
   @li mf_getvartype.sas
 
   @param [in] libds dataset to hash
-  @param [in] salt= Provide a salt (could be, for instance, the name of the
-    dataset). Max 32 chars.
+  @param [in] salt= Provide a salt (could be, for instance, the dataset name)
   @param [out] outds= (work.mf_hashdataset) The output dataset to create. This
   will contain one column (hashkey) with one observation (a hex32.
   representation of the input hash)
@@ -56,7 +55,7 @@
     %let varlist=%mf_getvarlist(&libds);
     data &outds(rename=(&keyvar=hashkey) keep=&keyvar);
       length &prevkeyvar &keyvar $32;
-      retain &prevkeyvar "&salt";
+      retain &prevkeyvar "%sysfunc(md5(%str(&salt)),$hex32.)";
       set &libds end=&lastvar;
       /* hash should include previous row */
       &keyvar=put(md5(&prevkeyvar

tests/base/mp_getddl.test.sas

@@ -0,0 +1,23 @@
+/**
+  @file
+  @brief Testing mp_getddl.sas macro
+
+  <h4> SAS Macros </h4>
+  @li mp_getddl.sas
+  @li mp_assert.sas
+
+**/
+
+data test(index=(pk=(x y)/unique /nomiss));
+  x=1;
+  y='blah';
+  label x='blah';
+run;
+proc sql; describe table &syslast;
+%mp_getddl(work,test,flavour=tsql,showlog=YES)
+
+%mp_assert(
+  iftrue=(&syscc=0),
+  desc=mp_getddl runs without errors,
+  outds=work.test_results
+)