Test: Add test for #629, based on #610

boa/src/builtins/string/tests.rs

@@ -218,6 +218,22 @@ fn replace() {
     assert_eq!(forward(&mut engine, "a"), "\"2bc\"");
 }
 
+#[test]
+fn replace_with_regex() {
+    let realm = Realm::create();
+    let mut engine = Interpreter::new(realm);
+    let init = r#"
+        var re = /(\w+)\s(\w+)/;
+        var a = "John Smith";
+        a = a.replace(re, '$2, $1');
+        a
+        "#;
+
+    forward(&mut engine, init);
+
+    assert_eq!(forward(&mut engine, "a"), "\"Smith, John\"");
+}
+
 #[test]
 fn replace_with_function() {
     let realm = Realm::create();