1 // Copyright 2014 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Ported from 6 // https://github.com/tc39/Array.prototype.includes/blob/master/test/number-this.js 7 // using https://www.npmjs.org/package/test262-to-mjsunit 8 9 // Array.prototype.includes should use ToObject on this, so that when called 10 // with a number, it picks up numeric properties from Number.prototype (even in 11 // strict mode) 12 (function() { 13 "use strict"; 14 15 Number.prototype[0] = "a"; 16 Number.prototype[1] = "b"; 17 18 Object.defineProperty(Number.prototype, 2, { 19 get: function() { 20 assertEquals("object", typeof this); 21 return "c"; 22 } 23 }); 24 25 Number.prototype.length = 3; 26 assertTrue(Array.prototype.includes.call(5, "a")); 27 assertTrue(Array.prototype.includes.call(5, "b")); 28 assertTrue(Array.prototype.includes.call(5, "c")); 29 assertFalse(Array.prototype.includes.call(5, "d")); 30 })(); 31
