public void XMLStatementShouldBeValid()
{
var customer = new Customer("Test Customer");
var regularMovie = new Movie("RegularMovie", 0);
var childMovie = new Movie("ChildMovie", 2);
var newReleaseMovie = new Movie("NewRelease", 1);
customer.AddRental(new Rental(regularMovie, 2));
customer.AddRental(new Rental(childMovie, 3));
customer.AddRental(new Rental(newReleaseMovie, 1));
customer.AddRental(new Rental(newReleaseMovie, 3));
Assert.AreEqual(GetExpectedXMLStatement(),
customer.XmlStatement());
}