tests/stress/object-get-own-property-symbols-perform-to-object.js

   1 var primitives = [
   2     ["string", []],
   3     [42, []],
   4     [Symbol("symbol"), []],
   5     [true, []],
   6     [false, []]
   7 ];
   8
   9 function compare(ax, bx) {
  10     if (ax.length !== bx.length)
  11         return false;
  12     for (var i = 0, iz = ax.length; i < iz; ++i) {
  13         if (ax[i] !== bx[i])
  14             return false;
  15     }
  16     return true;
  17 }
  18
  19 for (var [primitive, expected] of primitives) {
  20     var ret = Object.getOwnPropertySymbols(primitive);
  21     if (!compare(ret, expected))
  22         throw new Error("bad value for " + String(primitive) + ": " + String(ret));
  23 }
  24
  25 [
  26     [ null, "TypeError: null is not an object (evaluating 'Object.getOwnPropertySymbols(value)')" ],
  27     [ undefined, "TypeError: undefined is not an object (evaluating 'Object.getOwnPropertySymbols(value)')" ]
  28 ].forEach(function ([value, message]) {
  29     var error = null;
  30     try {
  31         Object.getOwnPropertySymbols(value);
  32     } catch (e) {
  33         error = e;
  34     }
  35     if (!error)
  36         throw new Error("error not thrown");
  37     if (String(error) !== message)
  38         throw new Error("bad error: " + String(error));
  39 });