public void UnrecognizedBarCode()
{
var pos = new PointOfSaleTerminal(display, new InMemoryGateway());
pos.OnBarcode("bad");
display.Displayed.Should().Be("Error");
}
public void RecognizedBarCode()
{
var gateway = new InMemoryGateway();
gateway.AddItem(new Item {
Barcode = "good", Price = 2.22
});
var pos = new PointOfSaleTerminal(display, gateway);
pos.OnBarcode("good");
display.Displayed.Should().Be("$2.22");
}