public void MinutesAndSeconds()
        {
            var date = new DateTime(2015, 11, 7, 21, 57, 1, 1);
            var expected = new DateTime(2015, 11, 7, 22, 00, 0, 1);

            date.AddTime(minutes: 2, seconds: 59).ShouldBeEquivalentTo(expected);
        }
        public void HoursAndSeconds()
        {
            var date = new DateTime(2015, 11, 7, 21, 57, 1, 1);
            var expected = new DateTime(2015, 11, 7, 23, 58, 0, 1);

            date.AddTime(2, seconds: 59).ShouldBeEquivalentTo(expected);
        }
        public void AddMinutes()
        {
            var date = new DateTime(2015, 11, 7, 21, 57, 1, 1);
            var expected = new DateTime(2015, 11, 7, 22, 10, 1, 1);

            date.AddTime(minutes: 13).ShouldBeEquivalentTo(expected);
        }
        public void HoursAndMinutes()
        {
            var date = new DateTime(2015, 11, 7, 21, 57, 1, 1);
            var expected = new DateTime(2015, 11, 8, 0, 0, 1, 1);

            date.AddTime(2, 3).ShouldBeEquivalentTo(expected);
        }
        public void AddHours()
        {
            var date = new DateTime(2015, 11, 7, 21, 57, 1, 1);
            var expected = new DateTime(2015, 11, 8, 1, 57, 1, 1);

            date.AddTime(4).ShouldBeEquivalentTo(expected);
        }