static void Main()
{
var terminal = new PointOfSaleTerminal();
terminal.SetPricing("A", 1.25m, 3, 3.00m);
terminal.SetPricing("B", 4.25m, null, null);
terminal.SetPricing("C", 1, 6, 5.00m);
terminal.SetPricing("D", 0.75m, null, null);
terminal.ScanProduct("A");
terminal.ScanProduct("B");
terminal.ScanProduct("C");
terminal.ScanProduct("D");
terminal.ScanProduct("A");
terminal.ScanProduct("B");
terminal.ScanProduct("A");
var totalSum = terminal.CalculateTotal();
terminal.ScanProduct("C");
terminal.ScanProduct("C");
terminal.ScanProduct("C");
terminal.ScanProduct("C");
terminal.ScanProduct("C");
terminal.ScanProduct("C");
terminal.ScanProduct("C");
totalSum = terminal.CalculateTotal();
terminal.ScanProduct("A");
terminal.ScanProduct("B");
terminal.ScanProduct("C");
terminal.ScanProduct("D");
totalSum = terminal.CalculateTotal();
}
public void SetPricing_ScanSingleUnitOfItem_CheckCalculatedPriceIsUnitPrice(string productName, decimal unitPrice, int bulkQuantity, decimal bulkPrice)
{
var terminal = new PointOfSaleTerminal();
terminal.SetPricing(productName, unitPrice, bulkQuantity, bulkPrice);
terminal.ScanProduct(productName);
Assert.AreEqual(unitPrice, terminal.CalculateTotal(), "Total Price for the scanned item should be equal to its unit price");
}
public void DoNotSetBulkPricing_Scan10Items_CheckCalculatedPriceIsbasedOnUnitPrice(string productName, decimal unitPrice, int bulkQuantity, decimal bulkPrice)
{
var terminal = new PointOfSaleTerminal();
terminal.SetPricing(productName, unitPrice, bulkQuantity, bulkPrice);
for (var itemCount = 0; itemCount < 10; itemCount++)
{
terminal.ScanProduct(productName);
}
Assert.AreEqual(unitPrice * 10, terminal.CalculateTotal(), "Total Price for the scanned item should be equal to its ten times of its 10 times of unit price");
}
public void SetPricing_ScanBulkQuantityOfItem_CheckCalculatedPriceIsBulkPrice(string productName, decimal unitPrice, int bulkQuantity, decimal bulkPrice)
{
var terminal = new PointOfSaleTerminal();
terminal.SetPricing(productName, unitPrice, bulkQuantity, bulkPrice);
for (var itemCount = 0; itemCount < bulkQuantity; itemCount++)
{
terminal.ScanProduct(productName);
}
Assert.AreEqual(bulkPrice, terminal.CalculateTotal(), "Total Price for the scanned item should be equal to its bulk price");
}
public void ScanSomeProducts_CalculatePrice_VerifyUnitPriceAndBulkPriceAppliedAccordingly(string[] listOfItemsToBeScanned, decimal expectedTotalSum)
{
var terminal = new PointOfSaleTerminal();
terminal.SetPricing("A", 1.25m, 3, 3.00m);
terminal.SetPricing("B", 4.25m, null, null);
terminal.SetPricing("C", 1, 6, 5.00m);
terminal.SetPricing("D", 0.75m, null, null);
foreach (var item in listOfItemsToBeScanned)
{
terminal.ScanProduct(item);
}
Assert.AreEqual(expectedTotalSum, terminal.CalculateTotal(), "Calculated price should be based on bulk price and unit price specified");
}
public void SetInvalidBulkPricing_VerifyThatSystemThrowsInvalidOperationException(string productName, decimal unitPrice, int bulkQuantity, decimal bulkPrice)
{
var terminal = new PointOfSaleTerminal();
Assert.Throws <InvalidOperationException>(() => terminal.SetPricing(productName, unitPrice, bulkQuantity, bulkPrice));
}
public void SetPriceOfAProdcutThatDoesNotExistWithSystem_CheckInvalidDataExceptionThrown()
{
var terminal = new PointOfSaleTerminal();
Assert.Throws <System.IO.InvalidDataException>(() => terminal.SetPricing("E", 1.00m, 6, 4.00m));
}
public void ScanProdcutThatDoesNotExistWithSystem_CheckInvalidOperationExceptionThrown()
{
var terminal = new PointOfSaleTerminal();
Assert.Throws <InvalidOperationException>(() => terminal.ScanProduct("E"));
}