tests/stress/weak-set-constructor-adder.js

   1 // WeakSet constructor with adder change.
   2
   3 var originalAdder = WeakSet.prototype.add;
   4 var counter = 0;
   5
   6 WeakSet.prototype.add = function (key) {
   7     counter++;
   8     return originalAdder.call(this, key);
   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,
  20     obj1,
  21     obj2,
  22     obj3,
  23     obj4,
  24     obj5,
  25     obj4,
  26     obj3,
  27     obj2,
  28     obj1,
  29     obj0,
  30 ];
  31 var set = new WeakSet(values);
  32 if (counter !== values.length)
  33     throw new Error("bad counter " + counter);
  34
  35 WeakSet.prototype.add = function () {
  36     throw new Error("adder called");
  37 };
  38
  39 var set = new WeakSet();
  40 var set = new WeakSet([]);
  41 var error = null;
  42 try {
  43     var set = new WeakSet([ 0 ]);
  44 } catch (e) {
  45     error = e;
  46 }
  47 if (!error)
  48     throw new Error("error not thrown");
  49 if (String(error) !== "Error: adder called")
  50     throw new Error("bad error " + String(error));
  51