public void CalculateTotalAmountInvoiced()
{
//Begin Arrange
InvoiceRepository repository = new InvoiceRepository();
var invoiceList = repository.Retrieve();
//End Arrange
//Begin Act
var actual = repository.CalclateTotalAmontInvoiced(invoiceList);
//End Act
//Begin Assert
Assert.AreEqual(588.64, actual);
//End Assert
}
