1 files changed, 45 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Object/prototype/__defineGetter__/define-existing.js b/js/src/tests/test262/built-ins/Object/prototype/__defineGetter__/define-existing.js
new file mode 100644
index 0000000000..d23ffa10fe
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/prototype/__defineGetter__/define-existing.js
@@ -0,0 +1,45 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-additional-properties-of-the-object.prototype-object
+description: Behavior when property exists and is configurable
+info: |
+    [...]
+    3. Let desc be PropertyDescriptor{[[Get]]: getter, [[Enumerable]]: true,
+       [[Configurable]]: true}.
+    4. Let key be ? ToPropertyKey(P).
+    5. Perform ? DefinePropertyOrThrow(O, key, desc).
+    6. Return undefined.
+includes: [propertyHelper.js]
+features: [__getter__]
+---*/
+
+var subject = {};
+var originalGet = function() {};
+var originalSet = function() {};
+var newGet = function() {};
+var desc, result;
+
+Object.defineProperty(subject, 'stringAcsr', {
+  get: originalGet,
+  set: originalSet,
+  enumerable: false,
+  configurable: true
+});
+
+result = subject.__defineGetter__('stringAcsr', newGet);
+
+desc = Object.getOwnPropertyDescriptor(subject, 'stringAcsr');
+
+verifyProperty(subject, "stringAcsr", {
+  enumerable: true,
+  configurable: true
+});
+
+assert.sameValue(desc.get, newGet, 'descriptor `get` method');
+assert.sameValue(desc.set, originalSet, 'descriptor `set` method');
+assert.sameValue(desc.value, undefined, 'descriptor `value` property');
+
+assert.sameValue(result, undefined, 'method return value');
+
+reportCompare(0, 0);