public void OnParseDateTimeValue()
        {
            // arrange
            var vm = new DateTimeFieldViewModel();
            var evnt = new ParseDateTimeEventArgs(null, null, DateTime.Now, new DateTime(1752, 1, 1), true);

            // act
            vm.OnParseDateTimeValue(null, evnt);

            // assert
            Assert.IsFalse(evnt.IsParsingSuccessful);
        }