/// <summary>
///
/// </summary>
/// <param name="paidAmount"></param>
/// <param name="productAmount"></param>
/// <returns></returns>
private string CalculateChange(string paidAmount, string productAmount)
{
// Limpa mensagem de erro
this.UxTxtOutput.Text = string.Empty;
// Monta o request
ChangeRequest changeRequest = new ChangeRequest();
changeRequest.PaidAmount = int.Parse(paidAmount);
changeRequest.ProductAmount = int.Parse(productAmount);
// Chama o calculo do troco
ChangeManager changeManager = new ChangeManager();
// Assina o evento de conclusão de processador.
changeManager.OnProcessorDone += changeManager_OnProcessorDone;
ChangeResponse changeResponse = changeManager.CalculateChange(changeRequest);
// Verifica se o calculo foi feito corretamente
if (changeResponse.Success == true)
{
// Instancia montador de string
StringBuilder stringBuilder = new StringBuilder();
stringBuilder.AppendFormat("Moedas:");
foreach (ChangeData changeInCoin in changeResponse.ChangeDataCollection)
{
stringBuilder.AppendFormat("\r\n{0} {1}(s) de {2} centavo(s)", changeInCoin.Quantity, changeInCoin.Name, changeInCoin.AmountInCents);
}
// Devolve a mensagem de erro para a interface
this.UxTxtOutput.AppendText(stringBuilder.ToString());
// Retorna troco
return(changeResponse.ChangeAmount.ToString());
}
else
{
// Instancia montador de string
StringBuilder stringBuilder = new StringBuilder();
stringBuilder.AppendFormat("Deu ruim!");
// Varre a coleção de erros
foreach (ErrorReport errorReport in changeResponse.ErrorReport)
{
stringBuilder.AppendFormat("\r\nErro no campo {0}: {1}", errorReport.Field, errorReport.Message);
}
// Devolve a mensagem de erro para a interface
this.UxTxtOutput.AppendText(stringBuilder.ToString());
// Retorna troco vazio
return(string.Empty);
}
}
public void CalculateChange_NegativeProductAmount()
{
ChangeManager changeManager = new ChangeManager();
IocFactory.Register <IConfigurationUtility, ConfigurationUtilityMock>();
ChangeRequest changeRequest = new ChangeRequest();
changeRequest.PaidAmount = 100;
changeRequest.ProductAmount = -100;
ChangeResponse changeResponse = changeManager.CalculateChange(changeRequest);
Assert.IsNotNull(changeResponse);
Assert.IsNotNull(changeResponse.ErrorReport);
Assert.AreEqual(changeResponse.ErrorReport.Count(), 1);
Assert.AreEqual(changeResponse.ErrorReport[0].Field, "ChangeRequest.ProductAmount");
Assert.AreEqual(changeResponse.ChangeAmount, 0);
}
public void CalculateChange_WithValidValue()
{
ChangeManager changeManager = new ChangeManager();
ChangeRequest changeRequest = new ChangeRequest();
changeRequest.PaidAmount = 73891;
changeRequest.ProductAmount = 100;
ChangeResponse changeResponse = changeManager.CalculateChange(changeRequest);
Assert.IsNotNull(changeResponse);
Assert.IsNotNull(changeResponse.ChangeDataCollection);
Assert.AreEqual(7, changeResponse.ChangeDataCollection.SingleOrDefault(o => o.AmountInCents == 10000).Quantity);
Assert.AreEqual(1, changeResponse.ChangeDataCollection.SingleOrDefault(o => o.AmountInCents == 2000).Quantity);
Assert.AreEqual(1, changeResponse.ChangeDataCollection.SingleOrDefault(o => o.AmountInCents == 1000).Quantity);
Assert.AreEqual(1, changeResponse.ChangeDataCollection.SingleOrDefault(o => o.AmountInCents == 500).Quantity);
Assert.AreEqual(1, changeResponse.ChangeDataCollection.SingleOrDefault(o => o.AmountInCents == 200).Quantity);
Assert.AreEqual(1, changeResponse.ChangeDataCollection.SingleOrDefault(o => o.AmountInCents == 90).Quantity);
Assert.AreEqual(1, changeResponse.ChangeDataCollection.SingleOrDefault(o => o.AmountInCents == 1).Quantity);
}