chore(tests): adding some extra test cases

tests/base/mp_filtercheck.test.sas

@@ -52,6 +52,8 @@ AND,OR,2,Weight,NE,77.7
 AND,AND,1,age,=,.A
 AND,AND,1,height,<,.B
 AND,AND,1,age,IN,"(.a,.b,.)"
+AND,AND,1,age,IN,"(.A)"
+
 ;;;;
 run;
 

tests/base/mp_filterstore.test.1.sas

@@ -56,6 +56,9 @@ AND,AND,1,SEX,<=,"'M'"
 AND,OR,2,Name,NOT IN,"('Jane','Alfred')"
 AND,OR,2,Weight,>=,77.7
 AND,OR,2,Weight,NE,77.7
+AND,AND,3,age,NOT IN,"(.a,.b,.)"
+AND,AND,3,age,NOT IN,"(.A)"
+AND,AND,4,Name,=,"'Jeremiah'"
 ;;;;
 run;