public void IntegrationTestDuplicates()
{
SqlConnection sqlConn = new SqlConnection("Server=titan.cs.rose-hulman.edu;Database=csse376_36;User Id=csse376;Password=csse376;");
sqlConn.Open();
ExecuteSQLFile("EmptyAllTables.sql", sqlConn);
Hotel h1 = new Hotel(3);
Assert.IsFalse(h1.IsAlreadyInDB(sqlConn));
h1.WriteToDB(sqlConn);
Hotel h2 = new Hotel(3);
Assert.IsTrue(h2.IsAlreadyInDB(sqlConn));
Car c1 = new Car(1);
Assert.IsFalse(c1.IsAlreadyInDB(sqlConn));
c1.WriteToDB(sqlConn);
Car c2 = new Car(1);
Assert.IsTrue(c2.IsAlreadyInDB(sqlConn));
Flight f1 = new Flight(Flight.FromUnixTime(1401283755), Flight.FromUnixTime(1401944806), 2939);
Assert.IsFalse(f1.IsAlreadyInDB(sqlConn));
f1.WriteToDB(sqlConn);
Flight f2 = new Flight(Flight.FromUnixTime(1401283755), Flight.FromUnixTime(1401944806), 2939);
Assert.IsTrue(f2.IsAlreadyInDB(sqlConn));
}