1 files changed, 38 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.replace/result-coerce-groups.js b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.replace/result-coerce-groups.js
new file mode 100644
index 0000000000..db36533e3c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.replace/result-coerce-groups.js
@@ -0,0 +1,38 @@
+// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-regexp.prototype-@@replace
+description: >
+  String coercion of "groups" property of the value returned by RegExpExec.
+info: |
+  RegExp.prototype [ @@replace ] ( string, replaceValue )
+
+  [...]
+  14. For each result in results, do
+    [...]
+    j. Let namedCaptures be ? Get(result, "groups").
+    k. If functionalReplace is true, then
+      [...]
+    l. Else,
+      i. If namedCaptures is not undefined, then
+        1. Set namedCaptures to ? ToObject(namedCaptures).
+      ii. Let replacement be ? GetSubstitution(matched, S, position, captures, namedCaptures, replaceValue).
+features: [Symbol.replace, regexp-named-groups]
+---*/
+
+var r = /./;
+var coercibleValue = {
+  length: 1,
+  0: 'b',
+  index: 1,
+  groups: '123',
+};
+
+r.exec = function() {
+  return coercibleValue;
+};
+
+assert.sameValue(r[Symbol.replace]('ab', '[$<length>]'), 'a[3]');
+
+reportCompare(0, 0);