utatane.tea@gmail.com | 173452c | 2015-03-10 19:13:48 +0000 | [diff] [blame] | 1 | // WeakMap constructor with adder change. |
| 2 | |
| 3 | var originalAdder = WeakMap.prototype.set; |
| 4 | var counter = 0; |
| 5 | |
| 6 | WeakMap.prototype.set = function (key, value) { |
| 7 | counter++; |
| 8 | return originalAdder.call(this, key, value); |
| 9 | }; |
| 10 | |
| 11 | var obj0 = {}; |
| 12 | var obj1 = {}; |
| 13 | var obj2 = []; |
| 14 | var obj3 = new Date(); |
| 15 | var obj4 = new Error(); |
| 16 | var obj5 = JSON; |
| 17 | |
| 18 | var values = [ |
| 19 | [ obj0, 0 ], |
| 20 | [ obj1, 1 ], |
| 21 | [ obj2, 2 ], |
| 22 | [ obj3, 3 ], |
| 23 | [ obj4, 4 ], |
| 24 | [ obj5, 5 ], |
| 25 | [ obj4, 4 ], |
| 26 | [ obj3, 3 ], |
| 27 | [ obj2, 2 ], |
| 28 | [ obj1, 1 ], |
| 29 | [ obj0, 0 ], |
| 30 | ]; |
| 31 | var map = new WeakMap(values); |
| 32 | if (counter !== values.length) |
| 33 | throw "Error: bad counter " + counter; |
| 34 | |
| 35 | WeakMap.prototype.set = function () { |
| 36 | throw new Error("adder called"); |
| 37 | }; |
| 38 | |
| 39 | var map = new WeakMap(); |
| 40 | var map = new WeakMap([]); |
| 41 | var error = null; |
| 42 | try { |
| 43 | var map = new WeakMap([ [0, 0] ]); |
| 44 | } catch (e) { |
| 45 | error = e; |
| 46 | } |
| 47 | if (!error) |
| 48 | throw "Error: error not thrown"; |
| 49 | if (String(error) !== "Error: adder called") |
| 50 | throw "Error: bad error " + String(error); |
| 51 | |