| // Copyright (c) 2012 Ecma International. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| esid: sec-array.prototype.foreach |
| description: > |
| Array.prototype.forEach doesn't call callbackfn if 'length' is 0 |
| (subclassed Array, length overridden with obj w/o valueOf |
| (toString)) |
| ---*/ |
| |
| foo.prototype = new Array(1, 2, 3); |
| |
| function foo() {} |
| var f = new foo(); |
| |
| var o = { |
| toString: function() { |
| return '0'; |
| } |
| }; |
| f.length = o; |
| |
| // objects inherit the default valueOf method of the Object object; |
| // that simply returns the itself. Since the default valueOf() method |
| // does not return a primitive value, ES next tries to convert the object |
| // to a number by calling its toString() method and converting the |
| // resulting string to a number. |
| var callCnt = 0; |
| |
| function cb() { |
| callCnt++ |
| } |
| var i = f.forEach(cb); |
| |
| assert.sameValue(callCnt, 0, 'callCnt'); |
