1 files changed, 26 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Object/prototype/isPrototypeOf/length.js b/js/src/tests/test262/built-ins/Object/prototype/isPrototypeOf/length.js
new file mode 100644
index 0000000000..3bb8cfe675
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/prototype/isPrototypeOf/length.js
@@ -0,0 +1,26 @@
+// Copyright (C) 2009 the Sputnik authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-object.prototype.isprototypeof
+description: >
+  Object.prototype.isPrototypeOf.length is 1.
+info: |
+  Object.prototype.isPrototypeOf ( V )
+
+  ECMAScript Standard Built-in Objects
+
+  Unless otherwise specified, the length property of a built-in Function
+  object has the attributes { [[Writable]]: false, [[Enumerable]]: false,
+  [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+verifyProperty(Object.prototype.isPrototypeOf, "length", {
+  value: 1,
+  writable: false,
+  enumerable: false,
+  configurable: true,
+});
+
+reportCompare(0, 0);