1 files changed, 33 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/JSON/stringify/replacer-array-string-object.js b/js/src/tests/test262/built-ins/JSON/stringify/replacer-array-string-object.js
new file mode 100644
index 0000000000..c1380049e2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/JSON/stringify/replacer-array-string-object.js
@@ -0,0 +1,33 @@
+// Copyright (C) 2019 Aleksey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-json.stringify
+description: >
+  Converts String objects from replacer array to primitives using ToString.
+info: |
+  JSON.stringify ( value [ , replacer [ , space ] ] )
+
+  [...]
+  4. If Type(replacer) is Object, then
+    [...]
+    4. Repeat, while k < len,
+      a. Let v be ? Get(replacer, ! ToString(k)).
+      [...]
+      e. Else if Type(v) is Object, then
+        i. If v has a [[StringData]] or [[NumberData]] internal slot,
+        set item to ? ToString(v).
+---*/
+
+var str = new String('str');
+str.toString = function() { return 'toString'; };
+str.valueOf = function() { throw new Test262Error('should not be called'); };
+
+var value = {
+  str: 1,
+  toString: 2,
+  valueOf: 3,
+};
+
+assert.sameValue(JSON.stringify(value, [str]), '{"toString":2}');
+
+reportCompare(0, 0);