test(parser): list spread

crates/aiken-lang/src/parser/expr/list.rs

@@ -44,4 +44,9 @@ mod tests {
     fn int_list() {
         assert_expr!("[1, 2, 3]");
     }
+
+    #[test]
+    fn list_spread() {
+        assert_expr!("[1, 2, ..[]]");
+    }
 }

crates/aiken-lang/src/parser/expr/snapshots/list_spread.snap

@@ -0,0 +1,30 @@
+---
+source: crates/aiken-lang/src/parser/expr/list.rs
+description: "Code:\n\n[1, 2, ..[]]"
+---
+List {
+    location: 0..12,
+    elements: [
+        Int {
+            location: 1..2,
+            value: "1",
+            base: Decimal {
+                numeric_underscore: false,
+            },
+        },
+        Int {
+            location: 4..5,
+            value: "2",
+            base: Decimal {
+                numeric_underscore: false,
+            },
+        },
+    ],
+    tail: Some(
+        List {
+            location: 9..11,
+            elements: [],
+            tail: None,
+        },
+    ),
+}