tests/stress/set-constructor.js

   1 // Set constructor behaviors.
   2
   3 if (typeof Set !== 'function')
   4     throw "Error: bad value" + typeof Set;
   5
   6 function testCallTypeError(item) {
   7     var error = null;
   8     try {
   9         var set = Set(item);
  10     } catch (e) {
  11         error = e;
  12     }
  13     if (!error)
  14         throw "Error: error not thrown";
  15     if (String(error) !== "TypeError: Set cannot be called as a function")
  16         throw "Error: bad error " + String(error);
  17 }
  18
  19 var pass = [
  20     [ null, 0 ],
  21     [ undefined, 0 ],
  22     [ "Cocoa", 4 ],
  23     [ [0, 1, 2, 3, 4], 5 ],
  24     [ [0, 0, 0, 1, 0], 2 ],
  25     [ ["A", "B", "A"], 2 ],
  26     [ new String("cocoa"), 3 ],
  27     [ new String("Cocoa"), 4 ],
  28     [ new Set([0,1,2,3,4]), 5],
  29     [ new Set([1,1,1,1]), 1],
  30     [ new Map([[1, 2],[1, 2]]), 1],
  31     [ new Map([[1, 2],[2, 2]]), 2],
  32 ];
  33
  34 for (var pair of pass) {
  35     var set = new Set(pair[0]);
  36     if (set.size !== pair[1])
  37         throw "Error: bad set size " + set.size;
  38     testCallTypeError(pair[0]);
  39 }
  40
  41 function testTypeError(item) {
  42     var error = null;
  43     try {
  44         var set = new Set(item);
  45     } catch (e) {
  46         error = e;
  47     }
  48     if (!error)
  49         throw "Error: error not thrown";
  50     if (String(error) !== "TypeError: Type error")
  51         throw "Error: bad error " + String(error);
  52 }
  53
  54 var nonIterable = [
  55     42,
  56     Symbol("Cappuccino"),
  57     true,
  58     false,
  59     {},
  60     new Date(),
  61     new Error(),
  62     Object(Symbol("Matcha")),
  63     (function () { }),
  64 ];
  65
  66 for (var item of nonIterable) {
  67     testTypeError(item);
  68     testCallTypeError(item);
  69 }