public void GetTotalPriceForOneItemReturnsCorrectResult(string barcode, double price)
{
// Arrange
var sut = new PointOfSaleServiceBuilder()
.WithQuery(new InMemoryItemRegistry())
.WithGenerator(new Mock <TransactionIdGenerator>().Object)
.Build();
var expected = new decimal(price);
// Act
sut.OnBarcodeScan(barcode);
// Assert
Assert.Equal(expected, sut.SubTotal, numOfDecimalPlaces);
}
public void ItemWithRegisteredBarcodeIsStoredInsideScannedItems(string barcode)
{
// Arrange
var registry = new InMemoryItemRegistry();
var sut = new PointOfSaleServiceBuilder()
.WithQuery(registry)
.WithGenerator(new Mock <TransactionIdGenerator>().Object)
.Build();
var expected = registry.Read(barcode);
// Act
sut.OnBarcodeScan(barcode);
// Assert
sut.ScannedItems.Should().Contain(expected);
}
public void GetTotalPriceOnEmptyBarcodeReturns0Price()
{
// Arrange
var sut = new PointOfSaleServiceBuilder()
.WithQuery(new InMemoryItemRegistry())
.WithGenerator(new Mock <TransactionIdGenerator>().Object)
.Build();
string emptyBarcode = "";
// Act
sut.OnBarcodeScan(emptyBarcode);
// Assert
var expected = new decimal(0);
Assert.Equal(expected, sut.SubTotal, numOfDecimalPlaces);
}
public void ScannedItemIsDisplayed()
{
// Arrange
var registry = new InMemoryItemRegistry();
var sut = new Mock <Display>();
string barcode = "123456";
var sale = new PointOfSaleServiceBuilder()
.WithQuery(new InMemoryItemRegistry())
.WithGenerator(new Mock <TransactionIdGenerator>().Object)
.WithDisplay(sut.Object)
.Build();
var expected = new ScannedBarcodeEventArgs(registry.Read(barcode));
// Act
sale.OnBarcodeScan(barcode);
// Assert
sut.Verify(s => s.BarcodeHandler(sale, expected));
}
public void CompleteSaleDisplaysReceiptAndClearsScannedItems(int transactionId, string barcode)
{
// Arrange
var sut = new Mock <Display>();
var stubGenerator = new Mock <TransactionIdGenerator>();
stubGenerator.Setup(s => s.GenerateTransactionId()).Returns(transactionId);
var sale = new PointOfSaleServiceBuilder()
.WithDisplay(sut.Object)
.WithQuery(new InMemoryItemRegistry())
.WithGenerator(stubGenerator.Object)
.Build();
sale.OnBarcodeScan(barcode);
var expected = new CompleteSaleEventArgs(transactionId, sale.ScannedItems);
// Act
sale.OnCompleteSale();
// Assert
sut.Verify(s => s.CompleteSaleHandler(sale, expected));
sale.ScannedItems.Should().BeEmpty();
}