From c6ef2d1e958ec77741184162a15b9ef7e05c26fb Mon Sep 17 00:00:00 2001
From: Stephen Chung <Stephen.Chung@intexact.com>
Date: Fri, 6 Nov 2020 13:41:04 +0800
Subject: [PATCH] Add test to make sure call_fn does not pollute scope.

---
 tests/call_fn.rs | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/tests/call_fn.rs b/tests/call_fn.rs
index 7e9170b0..7b959472 100644
--- a/tests/call_fn.rs
+++ b/tests/call_fn.rs
@@ -38,6 +38,10 @@ fn test_call_fn() -> Result<(), Box<EvalAltResult>> {
             fn hello() {
                 41 + foo
             }
+            fn define_var() {
+                let bar = 21;
+                bar * 2
+            }
         ",
     )?;
 
@@ -50,6 +54,11 @@ fn test_call_fn() -> Result<(), Box<EvalAltResult>> {
     let r: INT = engine.call_fn(&mut scope, &ast, "hello", ())?;
     assert_eq!(r, 42);
 
+    let r: INT = engine.call_fn(&mut scope, &ast, "define_var", ())?;
+    assert_eq!(r, 42);
+
+    assert!(!scope.contains("bar"));
+
     assert_eq!(
         scope
             .get_value::<INT>("foo")