JSTests/test262/test/language/expressions/assignment/8.14.4-8-b_1.js

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

/*---
es5id: 8.14.4-8-b_1
description: Non-writable property on a prototype written to.
flags: [noStrict]
---*/

    function foo() {};
    Object.defineProperty(foo.prototype, "bar", {value: "unwritable"}); 
    
    var o = new foo(); 
    o.bar = "overridden"; 

assert.sameValue(o.hasOwnProperty("bar"), false, 'o.hasOwnProperty("bar")');
assert.sameValue(o.bar, "unwritable", 'o.bar');