Fix compound op with identifier first

TODO

@@ -1,5 +1,4 @@
 # Bugs
-- Fix `parser::tests::test_parse_compound_ops_with_identifier_first` test
 
 
 # Features 

examples/playground.sb

@@ -1,12 +1,11 @@
-main :: () {
+fn main() {
     let num = 10
     return fib(num)
 }
 
-fib :: (n) { 
+fn fib(n) { 
     if 1 >= n {
         return n
     }
-
     return fib(n-1) + fib(n-2)
 } 

src/parser/mod.rs

@@ -292,7 +292,7 @@ impl Parser {
                         }
                     }
                     _ => match BinOp::try_from(self.peek().ok_or("Could not peek token")?.kind) {
-                        Ok(_) => self.parse_bin_op(None)?,
+                        Ok(_) => self.parse_bin_op(Some(Expression::Variable(token.raw)))?,
                         Err(_) => Expression::Variable(val),
                     },
                 };

src/parser/tests.rs

@@ -211,7 +211,6 @@ fn test_parse_compound_ops_with_identifier() {
 }
 
 #[test]
-#[ignore]
 fn test_parse_compound_ops_with_identifier_first() {
     let raw = "
     fn main(n) {