public void Constructor_ThrowsArgumentNullException_NullTableLoader()
{
ISalesDataMatrix loader = null;
var path = Fixture.Create <string>();
Assert.Throws <ArgumentNullException>(() => new CarSales(loader, path));
}
// Constructs and instance of the <see cref="SalesTableFactory"/> class
public CarSales(ISalesDataMatrix tableLoader, string filepath)
{
_filepath = !string.IsNullOrWhiteSpace(filepath) ? filepath : throw new ArgumentNullException(nameof(filepath));
_matrix = tableLoader ?? throw new ArgumentNullException(nameof(tableLoader));
}
