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diff --git a/js/src/tests/test262/built-ins/Object/keys/order-after-define-property-with-function.js b/js/src/tests/test262/built-ins/Object/keys/order-after-define-property-with-function.js
new file mode 100644
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+++ b/js/src/tests/test262/built-ins/Object/keys/order-after-define-property-with-function.js
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+// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-object.keys
+description: >
+  Property names are returned in ascending chronological order of creation
+  that is unaffected by [[DefineOwnProperty]].
+info: |
+  Object.keys ( O )
+
+  [...]
+  2. Let nameList be ? EnumerableOwnPropertyNames(obj, key).
+  3. Return CreateArrayFromList(nameList).
+
+  EnumerableOwnPropertyNames ( O, kind )
+
+  [...]
+  2. Let ownKeys be ? O.[[OwnPropertyKeys]]().
+  [...]
+
+  OrdinaryOwnPropertyKeys ( O )
+
+  [...]
+  3. For each own property key P of O that is a String but is not an array index,
+  in ascending chronological order of property creation, do
+    a. Add P as the last element of keys.
+  [...]
+  5. Return keys.
+features: [arrow-function]
+includes: [compareArray.js]
+---*/
+
+var fn = () => {};
+fn.a = 1;
+Object.defineProperty(fn, "length", {enumerable: true});
+assert.compareArray(Object.keys(fn), ["length", "a"]);
+
+reportCompare(0, 0);