1 files changed, 37 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Proxy/ownKeys/extensible-return-trap-result.js b/js/src/tests/test262/built-ins/Proxy/ownKeys/extensible-return-trap-result.js
new file mode 100644
index 0000000000..e4f43ddd44
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Proxy/ownKeys/extensible-return-trap-result.js
@@ -0,0 +1,37 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-proxy-object-internal-methods-and-internal-slots-ownpropertykeys
+description: >
+    If target is extensible, return the non-falsy trap result if it contains all
+    of target's non-configurable keys.
+info: |
+    [[OwnPropertyKeys]] ( )
+
+    ...
+    18. If extensibleTarget is true, return trapResult.
+features: [Proxy]
+---*/
+
+var target = {};
+
+Object.defineProperty(target, "foo", {
+  configurable: false,
+  enumerable: true,
+  value: true
+});
+
+var p = new Proxy(target, {
+  ownKeys: function() {
+    return ["foo", "bar"];
+  }
+});
+
+var keys = Object.getOwnPropertyNames(p);
+
+assert.sameValue(keys[0], "foo");
+assert.sameValue(keys[1], "bar");
+
+assert.sameValue(keys.length, 2);
+
+reportCompare(0, 0);