|  | // Copyright 2018 the V8 project authors. All rights reserved. | 
|  | // Use of this source code is governed by a BSD-style license that can be | 
|  | // found in the LICENSE file. | 
|  |  | 
|  | var s = "baa"; | 
|  |  | 
|  | assertEquals(1, s.search(/a/)); | 
|  | assertEquals(["aa"], s.match(/a./)); | 
|  | assertEquals(["b", "", ""], s.split(/a/)); | 
|  |  | 
|  | let o = { index : 3, 0 : "x" }; | 
|  |  | 
|  | RegExp.prototype.exec = () => { return o; } | 
|  | assertEquals(3, s.search(/a/)); | 
|  | assertEquals(o, s.match(/a./)); | 
|  | assertEquals("baar", s.replace(/a./, "r")); | 
|  |  | 
|  | RegExp.prototype.exec = () => { return null; } | 
|  | assertEquals(["baa"], s.split(/a/)); |