public virtual void TestDateTimeDateDiffWeek()
{
var actual = db.Orders.FirstOrDefault(o => o.OrderDate == new DateTime(1997, 8, 25) && SqlFunctions.DateDiff(DateParts.Week, o.OrderDate, new DateTime(1996, 1, 1, 1, 1, 1)) == -86);
Console.WriteLine(actual);
Assert.AreNotEqual(null, actual);
}