public void DateUtils_AddDaysToCurrentDate1()
{
int? days = 1;
long start = DateTime.Now.Ticks;
DateTime?result = DateUtils.AddDaysToCurrentDate(days);
Assert.IsNotNull(result);
long diff = ((DateTime)result).Ticks - start;
Assert.AreEqual(true, (diff - TimeSpan.TicksPerDay) >= 0);
DateTime test1 = new DateTime(diff - A_DAY_IN_MS);
DateTime test2 = new DateTime(A_DAY_IN_MS);
Assert.AreEqual(true, (diff - A_DAY_IN_MS) < A_DAY_IN_MS);
}