public void NullUtils_GetNullOrDouble_Value_Success()
        {
            double?value = 321D;

            Assert.AreEqual(321D, NullUtils.GetNullOrDouble(value),
                            "GetNullOrDouble(value) did not return the expected value");
        }
        public void NullUtils_GetNullOrDouble_Null_Success()
        {
            double?value = null;

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