fix: check 4 special chars b4 replacing. Closes #218

tests/crossplatform/mp_jsonout.test.3.sas

@@ -0,0 +1,53 @@
+/**
+  @file
+  @brief Testing mp_jsonout.sas macro with non-standard chars
+
+  <h4> SAS Macros </h4>
+  @li mp_jsonout.sas
+  @li mp_assert.sas
+
+**/
+
+filename webref temp;
+
+data demo;
+  do x='"','0A'x,'0D'x,'09'x,'00'x,'0E'x,'0F'x,'01'x,'02'x,'10'x,'11'x,'\';
+    output;
+  end;
+run;
+%mp_jsonout(OPEN,jref=webref)
+%mp_jsonout(OBJ,demo,jref=webref)
+%mp_jsonout(CLOSE,jref=webref)
+
+data _null_;
+  infile webref;
+  input;
+  putlog _infile_;
+run;
+
+libname web JSON fileref=webref;
+
+%mp_assert(
+  iftrue=(&syscc=0),
+  desc=Checking for error condition with special chars export,
+  outds=work.test_results
+)
+
+/*
+data _null_;
+  set work.demo (in=start) web.demo (in=end);
+  put (_all_)(=);
+run;
+proc sql;
+describe table work.demo;
+describe table web.demo;
+*/
+
+proc compare base=work.demo compare=web.demo(keep=x);
+quit;
+
+%mp_assert(
+  iftrue=(&sysinfo=0),
+  desc=Returned json is identical to input table for all special chars,
+  outds=work.test_results
+)