[Function Name] Add tests (#2109)

Author: nex3

spec/css/functions/not_special.hrx

@@ -1,7 +1,77 @@
-<===> prefixed/type/input.scss
+<===> prefixed/lowercase/type/input.scss
 a {b: -c-type(1 + 1)}
 
-<===> prefixed/type/output.css
+<===> prefixed/lowercase/type/output.css
 a {
   b: -c-type(2);
 }
+
+<===>
+================================================================================
+<===> prefixed/lowercase/and/input.scss
+a {b: -c-and(1 + 1)}
+
+<===> prefixed/lowercase/and/output.css
+a {
+  b: -c-and(2);
+}
+
+<===>
+================================================================================
+<===> prefixed/lowercase/or/input.scss
+a {b: -c-or(1 + 1)}
+
+<===> prefixed/lowercase/or/output.css
+a {
+  b: -c-or(2);
+}
+
+<===>
+================================================================================
+<===> prefixed/lowercase/not/input.scss
+a {b: -c-not(1 + 1)}
+
+<===> prefixed/lowercase/not/output.css
+a {
+  b: -c-not(2);
+}
+
+<===>
+================================================================================
+<===> prefixed/uppercase/type/input.scss
+a {b: -C-TYPE(1 + 1)}
+
+<===> prefixed/uppercase/type/output.css
+a {
+  b: -C-TYPE(2);
+}
+
+<===>
+================================================================================
+<===> prefixed/uppercase/and/input.scss
+a {b: -C-AND(1 + 1)}
+
+<===> prefixed/uppercase/and/output.css
+a {
+  b: -C-AND(2);
+}
+
+<===>
+================================================================================
+<===> prefixed/uppercase/or/input.scss
+a {b: -C-OR(1 + 1)}
+
+<===> prefixed/uppercase/or/output.css
+a {
+  b: -C-OR(2);
+}
+
+<===>
+================================================================================
+<===> prefixed/uppercase/not/input.scss
+a {b: -C-NOT(1 + 1)}
+
+<===> prefixed/uppercase/not/output.css
+a {
+  b: -C-NOT(2);
+}