public void CalculateForDiscount_Should_Return_Correct_Sum(string productCodes, double totalPrice)
{
// arrange
IPointOfSaleTerminal terminal = new PointOfSaleTerminal();
IReadOnlyDictionary <string, ProductPricingSettings> settings = new Dictionary <string, ProductPricingSettings>
{
{ "A", new ProductPricingSettings(1.25, 3, 3) },
{ "B", new ProductPricingSettings(4.25) },
{ "C", new ProductPricingSettings(1, 5, 6) },
{ "D", new ProductPricingSettings(0.75) },
{ "E", new ProductPricingSettings(1, 0.75, 1) }
};
terminal.SetPricing(settings);
foreach (char productCode in productCodes)
{
terminal.Scan(productCode.ToString());
}
// act
double result = terminal.CalculateForDiscount();
// assert
Assert.Equal(totalPrice, result);
}
public void CalculateForDiscount_Should_Return_0_If_ProductPricingSettings_Is_Null_or_Empty()
{
// arrange
IPointOfSaleTerminal terminal = new PointOfSaleTerminal();
// act
double result = terminal.CalculateForDiscount();
// assert
Assert.Equal(0, result);
}
public void CalculateForDiscount_Should_Return_0_If_No_Scan()
{
// arrange
IPointOfSaleTerminal terminal = new PointOfSaleTerminal();
IReadOnlyDictionary <string, ProductPricingSettings> settings = new Dictionary <string, ProductPricingSettings>
{
{ "A", new ProductPricingSettings(1.25, 3, 3) },
{ "B", new ProductPricingSettings(4.25) },
{ "C", new ProductPricingSettings(1, 5, 6) },
{ "D", new ProductPricingSettings(0.75) }
};
terminal.SetPricing(settings);
// act
double result = terminal.CalculateForDiscount();
// assert
Assert.Equal(0, result);
}