public void CatalogLogicTest()
{
LibraryLogic logic = new LibraryLogic(new Library());
var b = new Book("Dune", "Herbert", BType.SciFi, 25, 1);
logic.AddToCatalog(b);
Assert.IsTrue(logic.GetLibrary.Catalog.Contains(b));
Assert.IsTrue(logic.IsInCatalog(b));
logic.AddToCatalog(b);
Assert.AreEqual(logic.GetLibrary.Catalog.Count(), 1);
logic.RemoveFromCatalog(logic.GetLibrary.Catalog[0]);
Assert.AreEqual(logic.GetLibrary.Catalog.Count(), 0);
}