JSTests/test262/test/language/function-code/10.4.3-1-102-s.js

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

/*---
es5id: 10.4.3-1-102-s
description: >
    Strict Mode - checking 'this' (strict anonymous function passed as
    arg to String.prototype.replace)
---*/

var x = 3;

assert.sameValue("ab".replace("b", (function () {
                                "use strict";
                                return function () {
                                    x = this;
                                    return "a";
                                }
                           })()), "aa");
assert.sameValue(x, undefined, 'x');