tests/stress/is-undefined-exit-on-masquerader.js

   1 var doMasquerading = false;
   2
   3 function bar(o) {
   4     if (doMasquerading)
   5         return makeMasquerader();
   6     return o;
   7 }
   8
   9 noInline(bar);
  10
  11 function foo(o) {
  12     o = bar(o);
  13     return typeof o === "undefined";
  14 }
  15
  16 noInline(foo);
  17
  18 function test(o, expected) {
  19     var result = foo(o);
  20     if (result != expected)
  21         throw new Error("bad result: " + result);
  22 }
  23
  24 for (var i = 0; i < 10000; ++i) {
  25     test(void 0, true);
  26     test(null, false);
  27     test(42, false);
  28     test({}, false);
  29     test("undefined", false);
  30 }
  31
  32 doMasquerading = true;
  33 test({}, true);