1 files changed, 31 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/String/prototype/replace/replaceValue-evaluation-order.js b/js/src/tests/test262/built-ins/String/prototype/replace/replaceValue-evaluation-order.js
new file mode 100644
index 0000000000..aeb45287ba
--- /dev/null
+++ b/js/src/tests/test262/built-ins/String/prototype/replace/replaceValue-evaluation-order.js
@@ -0,0 +1,31 @@
+// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-string.prototype.replace
+description: >
+  Non-callable replaceValue is evaluated before searching the string.
+info: |
+  String.prototype.replace ( searchValue, replaceValue )
+
+  ...
+  6. If functionalReplace is false, then
+    a. Set replaceValue to ? ToString(replaceValue).
+  7. Search string for the first occurrence of searchString and let pos be the
+  index within string of the first code unit of the matched substring and let
+  matched be searchString. If no occurrences of searchString were found, return string.
+---*/
+
+var calls = 0;
+var replaceValue = {
+  toString: function() {
+    calls += 1;
+    return "b";
+  },
+};
+
+var newString = "".replace("a", replaceValue);
+assert.sameValue(newString, "");
+assert.sameValue(calls, 1);
+
+reportCompare(0, 0);