fix input group value and add test

compiler/tests/group/input/point.in

@@ -0,0 +1,2 @@
+[main]
+a: group = (7374112779530666882856915975292384652154477718021969292781165691637980424078, 3435195339177955418892975564890903138308061187980579490487898366607011481796)group;

compiler/tests/group/mod.rs

@@ -44,6 +44,16 @@ fn test_point() {
     assert_satisfied(program);
 }
 
+#[test]
+fn test_point_input() {
+    let program_bytes = include_bytes!("point_input.leo");
+    let input_bytes = include_bytes!("input/point.in");
+
+    let program = parse_program_with_input(program_bytes, input_bytes).unwrap();
+
+    assert_satisfied(program);
+}
+
 #[test]
 fn test_input() {
     let program_bytes = include_bytes!("input.leo");

compiler/tests/group/point_input.leo

@@ -0,0 +1,3 @@
+function main(a: group) {
+    let b = a;
+}

input/src/leo-input.pest

@@ -8,8 +8,10 @@ protected_name = {
     | "const"
     | "else"
     | "false"
-    | "function"
+    | type_field
     | "for"
+    | "function"
+    | type_group
     | "if"
     | "import"
     | "in"

input/src/values/group_value.rs

@@ -7,7 +7,7 @@ use std::fmt;
 #[derive(Clone, Debug, FromPest, PartialEq, Eq)]
 #[pest_ast(rule(Rule::value_group))]
 pub struct GroupValue<'ast> {
-    pub value: GroupTuple<'ast>,
+    pub value: GroupRepresentation<'ast>,
     pub _type: GroupType,
     #[pest_ast(outer())]
     pub span: Span<'ast>,
@@ -19,6 +19,22 @@ impl<'ast> fmt::Display for GroupValue<'ast> {
     }
 }
 
+#[derive(Clone, Debug, FromPest, PartialEq, Eq)]
+#[pest_ast(rule(Rule::group_single_or_tuple))]
+pub enum GroupRepresentation<'ast> {
+    Single(NumberValue<'ast>),
+    Tuple(GroupTuple<'ast>),
+}
+
+impl<'ast> fmt::Display for GroupRepresentation<'ast> {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        match self {
+            GroupRepresentation::Single(number) => write!(f, "{}", number),
+            GroupRepresentation::Tuple(tuple) => write!(f, "{}", tuple),
+        }
+    }
+}
+
 #[derive(Clone, Debug, FromPest, PartialEq, Eq)]
 #[pest_ast(rule(Rule::group_tuple))]
 pub struct GroupTuple<'ast> {