public void AddAndRemoveCatalogTest()
{
repository.AddCatalog("Dune", "Frank Herbert");
repository.AddCatalog("Krol", "Szczepan Twardoch");
Assert.AreEqual(repository.GetCatalogsNumber(), 2);
repository.RemoveCatalog(repository.GetCatalog("Dune", "Frank Herbert"));
repository.RemoveCatalog(repository.GetCatalog("Krol", "Szczepan Twardoch"));
Assert.AreEqual(repository.GetCatalogsNumber(), 0);
}
public void AddCatalog(string title, string author) => _repository.AddCatalog(title, author);
