From 5f186ade412be02b3df3d2a4aa0c8f841103286f Mon Sep 17 00:00:00 2001
From: Jeff <dev@jeffa.io>
Date: Wed, 28 Aug 2024 12:18:27 -0400
Subject: [PATCH] Add VM test

---
 dust-lang/src/vm.rs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/dust-lang/src/vm.rs b/dust-lang/src/vm.rs
index c70b8ab..a84f199 100644
--- a/dust-lang/src/vm.rs
+++ b/dust-lang/src/vm.rs
@@ -1430,6 +1430,13 @@ mod tests {
 
     use super::*;
 
+    #[test]
+    fn dereference_deep_copy() {
+        let source = "let mut x = 42; let mut y = *x; y += 1; x";
+
+        assert_eq!(run(source), Ok(Some(Value::integer(42))));
+    }
+
     #[test]
     fn dereference_variable() {
         let source = "let x = 42; let y = x; *y";