public void TestPleaseBookSeats0()
{
Assert.AreEqual("invalid order number", _testTheatre.PleaseBookSeats(0));
}
public void TestBookingOfMoreThan60SeatsMessage()
{
string expected = "Sorry, there are only 60 seats";
string actual = theatre.PleaseBookSeats(61);
Assert.AreEqual(expected, actual);
}