diff --git a/src/twopass.rs b/src/twopass.rs
index 2b4cb6a..68197a1 100644
--- a/src/twopass.rs
+++ b/src/twopass.rs
@@ -443,10 +443,34 @@ impl OpenFunction {
 
 #[cfg(test)]
 mod tests {
-	use crate::{ast::*, types::ValueInner};
+	use crate::{
+		ast::*,
+		types::{Value, ValueInner},
+	};
 
 	use super::build;
 
+	fn get(table: &Value, index: &str) -> Value {
+		let Some(ValueInner::Table(table)) = table else {
+			panic!("a table expected");
+		};
+		table.get(index.into())
+	}
+
+	fn set(table: &Value, index: &str, value: Value) {
+		let Some(ValueInner::Table(table)) = table else {
+			panic!("a table expected");
+		};
+		table.set(index.into(), value);
+	}
+
+	fn call(func: &Value, args: &[Value]) -> Value {
+		let Some(ValueInner::Function(func)) = func else {
+			panic!("a function expected");
+		};
+		func.call(args)
+	}
+
 	#[test]
 	fn test_local() {
 		let testee = Function {