Add a test for sexp with quoted atom containing parenthesis.

src/parser/sexp.rs

@@ -124,7 +124,7 @@ fn quoted_atom<'s>(input: &'s str) -> Res<&'s str, Token<'s>> {
     let (remaining, _) = tag(r#"""#)(input)?;
     let (remaining, _) = escaped(
         take_till1(|c| match c {
-            '\\' | '"' | ')' => true,
+            '\\' | '"' => true,
             _ => false,
         }),
         '\\',
@@ -215,4 +215,40 @@ mod tests {
             r#""foo""#
         )
     }
+
+    #[test]
+    fn quoted_containing_paren() {
+        let input = r#"  (foo "b(a)r" baz )  "#;
+        let (remaining, parsed) = sexp_with_padding(input).expect("Parse the input");
+        assert_eq!(remaining, "");
+        assert!(match parsed {
+            Token::List(_) => true,
+            _ => false,
+        });
+        let children = match parsed {
+            Token::List(children) => children,
+            _ => panic!("Should be a list."),
+        };
+        assert_eq!(
+            match children.first() {
+                Some(Token::Atom(body)) => *body,
+                _ => panic!("First child should be an atom."),
+            },
+            r#"foo"#
+        );
+        assert_eq!(
+            match children.iter().nth(1) {
+                Some(Token::Atom(body)) => *body,
+                _ => panic!("Second child should be an atom."),
+            },
+            r#""b(a)r""#
+        );
+        assert_eq!(
+            match children.iter().nth(2) {
+                Some(Token::Atom(body)) => *body,
+                _ => panic!("Third child should be an atom."),
+            },
+            r#"baz"#
+        );
+    }
 }