1 files changed, 40 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Proxy/getPrototypeOf/not-extensible-same-proto.js b/js/src/tests/test262/built-ins/Proxy/getPrototypeOf/not-extensible-same-proto.js
new file mode 100644
index 0000000000..3ee48b1581
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Proxy/getPrototypeOf/not-extensible-same-proto.js
@@ -0,0 +1,40 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 9.5.1
+description: >
+    Return trap result is target is not extensible, but trap result has the same
+    value as target.[[GetPrototypeOf]] result.
+info: |
+    [[GetPrototypeOf]] ( )
+
+    ...
+    1. Let handler be the value of the [[ProxyHandler]] internal slot of O.
+    ...
+    4. Let target be the value of the [[ProxyTarget]] internal slot of O.
+    5. Let trap be GetMethod(handler, "getPrototypeOf").
+    ...
+    8. Let handlerProto be Call(trap, handler, «target»).
+    ...
+    11. Let extensibleTarget be IsExtensible(target).
+    ...
+    14. Let targetProto be target.[[GetPrototypeOf]]().
+    ...
+    17. Return handlerProto.
+
+features: [Proxy]
+---*/
+
+var target = Object.create(Array.prototype);
+
+var p = new Proxy(target, {
+  getPrototypeOf: function() {
+    return Array.prototype;
+  }
+});
+
+Object.preventExtensions(target);
+
+assert.sameValue(Object.getPrototypeOf(p), Array.prototype);
+
+reportCompare(0, 0);