gistfile1.txt

*** BEFORE ***

    /**
     * @return {number} Amount of time in ms until the end of the hour.
     */
    _millisUntilHour: function() {
      var date = new Date();
      var millis = 1000 * (
          60 * (60 - date.getMinutes()) +
          (60 - date.getSeconds())
      );

      return millis;
    }

*** AFTER ***

    /**
     * @return {number} Amount of time in ms until the end of the hour.
     */
    _millisUntilHour: function() {
      var date = new Date();
      var millis = 1000 * (
          60 * (59 - date.getMinutes()) +
          (60 - date.getSeconds())
      );

      return millis;
    }
  };


*** TEST ***

  suite('#_millisUntilHour', function() {
    var MockDate, millisUntilHour;
    var RealDate;

    setup(function() {
      /** @constructor */
      MockDate = function() {};
      MockDate.prototype = {
        getMinutes: function() {
          return 58;
        },

        getSeconds: function() {
          return 30;
        }
      };
      RealDate = window.Date;
      window.Date = MockDate;

      // By inspection, there are 90000 ms between
      // xx:58:30 and the top of the hour
      millisUntilHour = 90000;
    });

    teardown(function() {
      window.Date = RealDate;
    });

    test('should calculate the correct number of ms', function() {
      assert.equal(decorator._millisUntilHour(), millisUntilHour);
    })
  });