public void Session_Exists(ISession session)
{
Assert.IsTrue(session.Exists(new Employee { EmployeeId = 1 }));
Assert.IsTrue(session.Exists(new Employee { EmployeeId = 2 }));
Assert.IsTrue(session.Exists(new Employee { EmployeeId = 3 }));
Assert.IsFalse(session.Exists(new Employee { EmployeeId = 123123 }));
}