NLite.Data.Test.DateTimeTest.DateDiffMinuteNullable C# (CSharp) Method

        public virtual void DateDiffMinuteNullable()
        {
            DateTime dt = new DateTime(1997, 8, 25, 0, 0, 0);
            var actual = db.Orders.Select(o => o.OrderDate == dt && SqlMethods.DateDiffMinute(o.OrderDate, null) == null).FirstOrDefault();
            Assert.IsNotNull(actual);

            var item = db.Orders.Where(o => o.OrderDate == dt && SqlMethods.DateDiffMinute(null, o.OrderDate) - 1 == null).FirstOrDefault();
            Assert.IsNotNull(item);
        }