JSTests/test262/test/built-ins/Object/seal/15.2.3.8-2-a-15.js

// Copyright (c) 2012 Ecma International.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
es5id: 15.2.3.8-2-a-15
description: >
    Object.seal - 'P' is own property of an Arguments object which
    implements its own [[GetOwnProperty]]
includes: [propertyHelper.js]
---*/

var obj = (function() {
  return arguments;
})();

obj.foo = 10;

assert(Object.isExtensible(obj));
Object.seal(obj);

verifyNotConfigurable(obj, "foo");
assert.sameValue(obj.foo, 10);