1 files changed, 31 insertions, 0 deletions
diff --git a/js/src/tests/test262/annexB/built-ins/String/prototype/replace/custom-replacer-emulates-undefined.js b/js/src/tests/test262/annexB/built-ins/String/prototype/replace/custom-replacer-emulates-undefined.js
new file mode 100644
index 0000000000..07c5ad606f
--- /dev/null
+++ b/js/src/tests/test262/annexB/built-ins/String/prototype/replace/custom-replacer-emulates-undefined.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: >
+  [[IsHTMLDDA]] object as @@replace method gets called.
+info: |
+  String.prototype.replace ( searchValue, replaceValue )
+
+  [...]
+  2. If searchValue is neither undefined nor null, then
+    a. Let replacer be ? GetMethod(searchValue, @@replace).
+    b. If replacer is not undefined, then
+      i. Return ? Call(replacer, searchValue, « O, replaceValue »).
+features: [Symbol.replace, IsHTMLDDA]
+---*/
+
+var searchValue = $262.IsHTMLDDA;
+var replacerGets = 0;
+Object.defineProperty(searchValue, Symbol.replace, {
+  get: function() {
+    replacerGets += 1;
+    return searchValue;
+  },
+  configurable: true,
+});
+
+assert.sameValue("".replace(searchValue), null);
+assert.sameValue(replacerGets, 1);
+
+reportCompare(0, 0);