1 files changed, 32 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Object/internals/DefineOwnProperty/consistent-value-regexp-dollar1.js b/js/src/tests/test262/built-ins/Object/internals/DefineOwnProperty/consistent-value-regexp-dollar1.js
new file mode 100644
index 0000000000..7c1e48dc00
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/internals/DefineOwnProperty/consistent-value-regexp-dollar1.js
@@ -0,0 +1,32 @@
+// Copyright (C) 2017 Claude Pache. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-invariants-of-the-essential-internal-methods
+description: >
+  Value of non-writable, non-configurable data property must not change
+  ("$1" property of the RegExp built-in)
+info: |
+  [[GetOwnProperty]] (P)
+  [...]
+  - If a property P is described as a data property with Desc.[[Value]] equal
+    to v and Desc.[[Writable]] and Desc.[[Configurable]] are both false, then
+    the SameValue must be returned for the Desc.[[Value]] attribute of the
+    property on all future calls to [[GetOwnProperty]] ( P ).
+  [...]
+  (This invariant was violated for the specific property under test by at least
+  one implementation as of January 2017.)
+---*/
+
+Reflect.defineProperty(RegExp, '$1', {
+  writable: false,
+  configurable: false
+});
+
+var desc = Reflect.getOwnPropertyDescriptor(RegExp, '$1');
+if (desc && desc.configurable === false && desc.writable === false) {
+  /(x)/.exec('x');
+  var desc2 = Reflect.getOwnPropertyDescriptor(RegExp, '$1');
+  assert.sameValue(desc.value, desc2.value);
+}
+
+reportCompare(0, 0);