1 files changed, 23 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/class/subclass/builtin-objects/Object/replacing-prototype.js b/js/src/tests/test262/language/statements/class/subclass/builtin-objects/Object/replacing-prototype.js
new file mode 100644
index 0000000000..dd6e7d5635
--- /dev/null
+++ b/js/src/tests/test262/language/statements/class/subclass/builtin-objects/Object/replacing-prototype.js
@@ -0,0 +1,23 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 19.1.1
+description: Subclassing Object replacing a prototype method
+info: |
+  19.1.1 The Object Constructor
+
+  The Object constructor is designed to be subclassable. It may be used as the
+  value of an extends clause of a class definition.
+---*/
+
+class Obj extends Object {
+  valueOf() {
+    return 42;
+  }
+}
+
+var obj = new Obj();
+
+assert.sameValue(obj.valueOf(), 42, 'Replaces prototype');
+
+reportCompare(0, 0);