public void NullUtils_GetNullOrDateTime_Value_Success()
        {
            DateTime?value = new DateTime(1981, 1, 21);

            Assert.AreEqual(new DateTime(1981, 1, 21), NullUtils.GetNullOrDateTime(value),
                            "GetNullOrDateTime(value) did not return the expected value");
        }
        public void NullUtils_GetNullOrDateTime_Null_Success()
        {
            DateTime?value = null;

            Assert.IsNull(NullUtils.GetNullOrDateTime(value), "GetNullOrDateTime(null) should have returned null");
        }