public virtual void TestStringCompare()
{
var lt = db.Customers.Where(c => c.CustomerID == "ALFKI").Sum(c => string.Compare(c.City, "Seattle"));
//var gt = db.Customers.Where(c => c.CustomerID == "ALFKI").Sum(c => string.Compare(c.City, "Aaa"));
//var eq = db.Customers.Where(c => c.CustomerID == "ALFKI").Sum(c => string.Compare(c.City, "Berlin"));
AssertValue(-1, lt);
//AssertValue(1, gt);
//AssertValue(0, eq);
}