From aacb7f0b2473ca82dd8ee339ddba1f571473cce9 Mon Sep 17 00:00:00 2001
From: Stephen Chung <schungx@live.com>
Date: Sun, 4 Apr 2021 15:37:59 +0800
Subject: [PATCH] Ensure no interpolation for normal strings.

---
 tests/string.rs | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/tests/string.rs b/tests/string.rs
index 9c72b27d..abcea364 100644
--- a/tests/string.rs
+++ b/tests/string.rs
@@ -325,6 +325,16 @@ fn test_string_interpolated() -> Result<(), Box<EvalAltResult>> {
         "hello 42 worlds!"
     );
 
+    assert_eq!(
+        engine.eval::<String>(
+            r#"
+                let x = 40;
+                "hello ${x+2} worlds!"
+            "#
+        )?,
+        "hello ${x+2} worlds!"
+    );
+
     assert_eq!(
         engine.eval::<String>(
             r"