From c2eaa30b08fb1e041b7297e415b6bad8461f50dc Mon Sep 17 00:00:00 2001
From: Jordan Harband <ljharb@gmail.com>
Date: Thu, 2 Jun 2016 14:30:36 -0700
Subject: [PATCH] `Object.getOwnPropertyDescriptors`: add test to ensure
 undefined descriptors are not added.

Per https://github.com/tc39/ecma262/pull/593
---
 .../proxy-undefined-descriptor.js             | 29 +++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 test/built-ins/Object/getOwnPropertyDescriptors/proxy-undefined-descriptor.js

diff --git a/test/built-ins/Object/getOwnPropertyDescriptors/proxy-undefined-descriptor.js b/test/built-ins/Object/getOwnPropertyDescriptors/proxy-undefined-descriptor.js
new file mode 100644
index 00000000000..56ea84b579a
--- /dev/null
+++ b/test/built-ins/Object/getOwnPropertyDescriptors/proxy-undefined-descriptor.js
@@ -0,0 +1,29 @@
+// Copyright (C) 2016 Jordan Harband. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: Object.getOwnPropertyDescriptors should perform observable operations in the correct order
+esid: pending
+author: Jordan Harband
+features: [Proxy]
+includes: [proxyTrapsHelper.js]
+---*/
+
+var key = "a";
+var ownKeys = [key];
+var badProxyHandlers = allowProxyTraps({
+  getOwnPropertyDescriptor: function () {},
+  ownKeys: function () {
+	return ownKeys;
+  }
+});
+var proxy = new Proxy({}, badProxyHandlers);
+
+var keys = Object.keys(proxy);
+assert.sameValue(keys, ownKeys, 'Object.keys returns the result of the [[OwnKeys]] trap');
+
+var descriptor = Object.getOwnPropertyDescriptor(proxy, key);
+assert.sameValue(descriptor, undefined, "Descriptor matches result of [[GetOwnPropertyDescriptor]] trap");
+
+var result = Object.getOwnPropertyDescriptors(proxy);
+assert.sameValue(key in result, false, "key is not present in result")