tests/stress/weak-set-constructor.js

   1 // WeakSet constructor behaviors.
   2
   3 if (typeof WeakSet !== 'function')
   4     throw new Error("bad value" + typeof WeakSet);
   5
   6 function testCallTypeError(item) {
   7     var error = null;
   8     try {
   9         var set = WeakSet(item);
  10     } catch (e) {
  11         error = e;
  12     }
  13     if (!error)
  14         throw new Error("error not thrown");
  15     if (String(error) !== "TypeError: WeakSet cannot be called as a function")
  16         throw new Error("bad error " + String(error));
  17 }
  18 var obj1 = {};
  19 var obj2 = [];
  20 var obj3 = new Date();
  21 var obj4 = new Error();
  22
  23 var pass = [
  24     null,
  25     undefined,
  26     [],
  27     new Set(),
  28     new Map(),
  29     "",
  30
  31     [
  32         obj1,
  33         obj2,
  34         obj3,
  35     ],
  36
  37     [
  38         obj1,
  39         obj1,
  40         obj1,
  41     ],
  42
  43     [
  44         obj2,
  45         obj3,
  46         obj4,
  47     ],
  48
  49     new Map([
  50         [obj1, 1],
  51         [obj2, 2],
  52         [obj3, 3],
  53     ]),
  54
  55     new Map([
  56         [obj1, 1],
  57         [obj1, 2],
  58         [obj1, 3],
  59     ]),
  60
  61     new Set([
  62         obj1,
  63         obj2,
  64         obj3,
  65     ]),
  66
  67     new Set([
  68         obj1,
  69         obj1,
  70         obj1,
  71     ]),
  72
  73     new Map([
  74         { 0: obj2, 1: 'O' },
  75         { 0: obj3, 1: 'K' },
  76         { 0: obj4, 1: 'K' },
  77     ]),
  78
  79     new Set([
  80         obj2,
  81         obj3,
  82         obj4,
  83     ])
  84 ];
  85
  86 for (var value of pass) {
  87     var set = new WeakSet(value);
  88     testCallTypeError(value);
  89 }
  90
  91 function testTypeError(item, message) {
  92     var error = null;
  93     try {
  94         var set = new WeakSet(item);
  95     } catch (e) {
  96         error = e;
  97     }
  98     if (!error)
  99         throw new Error("error not thrown");
 100     if (!message)
 101         message = "TypeError: Type error";
 102     if (String(error) !== message)
 103         throw new Error("bad error " + String(error));
 104 }
 105
 106 var nonIterable = [
 107     42,
 108     Symbol("Cappuccino"),
 109     true,
 110     false,
 111     {},
 112     new Date(),
 113     new Error(),
 114     Object(Symbol("Matcha")),
 115     (function () { }),
 116 ];
 117
 118 for (var item of nonIterable) {
 119     testTypeError(item);
 120     testCallTypeError(item);
 121 }
 122
 123 var nonObjectKeys = [
 124     [
 125         0,
 126         1,
 127         1,
 128     ],
 129
 130     [
 131         1,
 132         1,
 133         1,
 134     ],
 135
 136     [
 137         'C',
 138         'C',
 139         'V',
 140     ],
 141 ];
 142
 143 for (var item of nonObjectKeys) {
 144     testTypeError(item, 'TypeError: Attempted to add a non-object key to a WeakSet');
 145     testCallTypeError(item);
 146 }