third_party/WebKit/LayoutTests/fast/js/script-tests/names.js

   1 description(
   2 "This tests an early experimental implementation of ES6-esque private names."
   3 );
   4
   5 function forIn(o)
   6 {
   7     var a = [];
   8     for (x in o)
   9         a.push(x);
  10     return a;
  11 }
  12
  13 var prop = Name("prop");
  14 var o = {};
  15
  16 shouldBeFalse("prop in o");
  17 shouldBeFalse("'prop' in o");
  18 shouldBe("Object.getOwnPropertyNames(o).length", '0');
  19 shouldBe("forIn(o)", '[]');
  20
  21 o[prop] = 42;
  22
  23 shouldBeTrue("prop in o");
  24 shouldBeFalse("'prop' in o");
  25 shouldBe("Object.getOwnPropertyNames(o).length", '0');
  26 shouldBe("forIn(o)", '[]');
  27
  28 o['prop'] = 101;
  29
  30 shouldBe("o[prop]", '42');
  31 shouldBe("o['prop']", '101');
  32 shouldBe("Object.getOwnPropertyNames(o).length", '1');
  33 shouldBe("forIn(o)", '["prop"]');
  34
  35 delete o[prop];
  36
  37 shouldBeFalse("prop in o");
  38 shouldBeTrue("'prop' in o");
  39 shouldBe("Object.getOwnPropertyNames(o).length", '1');
  40 shouldBe("forIn(o)", '["prop"]');
  41
  42 successfullyParsed = true;