1 files changed, 34 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Object/getOwnPropertyDescriptors/proxy-undefined-descriptor.js b/js/src/tests/test262/built-ins/Object/getOwnPropertyDescriptors/proxy-undefined-descriptor.js
new file mode 100644
index 0000000000..a00b10470c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/getOwnPropertyDescriptors/proxy-undefined-descriptor.js
@@ -0,0 +1,34 @@
+// 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 filter out undefined OwnPropertyDescriptors
+esid: sec-object.getownpropertydescriptors
+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 = Reflect.ownKeys(proxy);
+assert.notSameValue(keys, ownKeys, 'Object.keys returns a new Array');
+assert.sameValue(Array.isArray(keys), true, 'Object.keys returns an Array');
+assert.sameValue(keys.length, ownKeys.length, 'keys and ownKeys have the same length');
+assert.sameValue(keys[0], ownKeys[0], 'keys and ownKeys have the same contents');
+
+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");
+
+reportCompare(0, 0);