feat: creating new mx_ suite of macros!

also adding new mx_getcode macro

tests/base/mp_getconstraints.test.sas

@@ -0,0 +1,57 @@
+/**
+  @file
+  @brief Testing mp_getconstraints.sas macro
+
+  <h4> SAS Macros </h4>
+  @li mf_nobs.sas
+  @li mp_getconstraints.sas
+  @li mp_assert.sas
+  @li mp_assertscope.sas
+
+**/
+
+
+%macro conditional();
+
+%if %sysfunc(exist(sashelp.vcncolu,view))=1 %then %do;
+  proc sql;
+  create table work.example(
+    TX_FROM float format=datetime19.,
+    DD_TYPE char(16),
+    DD_SOURCE char(2048),
+    DD_SHORTDESC char(256),
+    constraint pk primary key(tx_from, dd_type,dd_source),
+    constraint unq unique(tx_from, dd_type),
+    constraint nnn not null(DD_SHORTDESC)
+  );
+  %mp_assertscope(SNAPSHOT)
+  %mp_getconstraints(lib=work,ds=example,outds=work.constraints)
+  %mp_assertscope(COMPARE)
+
+  %mp_assert(
+    iftrue=(%mf_nobs(work.constraints)=6),
+    desc=Output table work.constraints created with correct number of records,
+    outds=work.test_results
+  )
+%end;
+%else %do;
+  proc sql;
+  create table work.example(
+    TX_FROM float format=datetime19.,
+    DD_TYPE char(16),
+    DD_SOURCE char(2048),
+    DD_SHORTDESC char(256)
+  );
+  %mp_assertscope(SNAPSHOT)
+  %mp_getconstraints(lib=work,ds=example,outds=work.constraints)
+  %mp_assertscope(COMPARE)
+
+  %mp_assert(
+    iftrue=(%mf_nobs(work.constraints)=0),
+    desc=Empty table created as constraints not supported,
+    outds=work.test_results
+  )
+%end;
+%mend conditional;
+
+%conditional()