public void GetGuidString()
        {
            DbParameterFormatter formatter = new DbParameterFormatter(false);
            Employee             model     = new Employee()
            {
                EmployeeID = Guid.NewGuid()
            };

            Assert.AreEqual(formatter.MapParameterValue(model.EmployeeID, model.GetType().GetProperty(nameof(model.EmployeeID))), model.EmployeeID.ToString());
        }
        public void GetValueNull()
        {
            int?i = null;

            Assert.IsTrue(_formatter.MapParameterValue(i) == DBNull.Value);
        }