1 files changed, 22 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-23.js b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-23.js
new file mode 100644
index 0000000000..1d0ff17f80
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-23.js
@@ -0,0 +1,22 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 15.2.3.10-3-23
+description: >
+    Object.preventExtensions - properties can still be reassigned
+    after extensions have been prevented
+---*/
+
+var obj = {
+  prop: 12
+};
+var preCheck = Object.isExtensible(obj);
+Object.preventExtensions(obj);
+
+obj.prop = -1;
+
+assert(preCheck, 'preCheck !== true');
+assert.sameValue(obj.prop, -1, 'obj.prop');
+
+reportCompare(0, 0);