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diff --git a/js/src/tests/test262/built-ins/Object/keys/proxy-non-enumerable-prop-invariant-2.js b/js/src/tests/test262/built-ins/Object/keys/proxy-non-enumerable-prop-invariant-2.js
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+// Copyright (C) 2019 Alexey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-object.keys
+description: >
+ Proxy [[OwnPropertyKeys]] trap does not skip non-enumerable keys when validating invariant:
+ * If the target object is not extensible, then the result List must contain all the keys of
+ the own properties of the target object and no other values.
+info: |
+ Object.keys ( O )
+
+ ...
+ 2. Let nameList be ? EnumerableOwnPropertyNames(obj, "key").
+
+ EnumerableOwnPropertyNames ( O, kind )
+
+ ...
+ 2. Let ownKeys be ? O.[[OwnPropertyKeys]]().
+
+ [[OwnPropertyKeys]] ( )
+
+ ...
+ 11. Let targetKeys be ? target.[[OwnPropertyKeys]]().
+ 16. For each element key of targetKeys, do
+ a. Let desc be ? target.[[GetOwnProperty]](key).
+ b. If desc is not undefined and desc.[[Configurable]] is false, then
+ ...
+ c. Else,
+ i. Append key as an element of targetConfigurableKeys.
+ ...
+ 18. Let uncheckedResultKeys be a new List which is a copy of trapResult.
+ ...
+ 21. For each key that is an element of targetConfigurableKeys, do
+ a. If key is not an element of uncheckedResultKeys, throw a TypeError exception.
+features: [Proxy]
+---*/
+
+var target = {};
+Object.defineProperty(target, 'prop', {
+ value: 2,
+ writable: true,
+ enumerable: false,
+ configurable: true,
+});
+
+var proxy = new Proxy(target, {
+ ownKeys: function() {
+ return [];
+ },
+});
+
+Object.preventExtensions(target);
+
+assert.throws(TypeError, function() {
+ Object.keys(proxy);
+});
+
+reportCompare(0, 0);