text: /* Any copyright is dedicated to the Public Domain.
   * http://creativecommons.org/licenses/publicdomain/ */
  
  var symbols = [
      Symbol(),
      Symbol("one"),
      Symbol.for("two"),
      Symbol.iterator,
      Object(Symbol())
  ];
  
  for (var sym of symbols) {
      var obj = {};
  
      // access a nonexistent property
      assertEq(sym in obj, false);
      assertEq(obj.hasOwnProperty(sym), false);
      assertEq(obj[sym], undefined);
      assertEq(typeof obj[sym], "undefined");
      assertEq(Object.getOwnPropertyDescriptor(obj, sym), undefined);
  
      // assign, then try accessing again
      obj[sym] = "ok";
      assertEq(sym in obj, true);
      assertEq(obj.hasOwnProperty(sym), true);
      assertEq(obj[sym], "ok");
      assertDeepEq(Object.getOwnPropertyDescriptor(obj, sym), {
          value: "ok",
          writable: true,
          enumerable: true,
          configurable: true
      });
  
      // assign again, observe value is overwritten
      obj[sym] = 12;
      assertEq(obj[sym], 12);
  
      // increment
      assertEq(obj[sym]++, 12);
      assertEq(obj[sym], 13);
  }
  
  if (typeof reportCompare === "function")
      reportCompare(0, 0);
  