public async Task Processing_outstanding_orders_logs_a_warning_when_payment_fails()
{
// Arrange
var ordersRepositoryMock = new Mock <IOrdersRepository>();
ordersRepositoryMock.Setup(c => c.GetOutstandingOrders())
.ReturnsAsync(GenerateOutstandingOrders(2));
var paymentServiceMock = new Mock <IPaymentService>();
paymentServiceMock
.SetupSequence(c => c.CompletePayment(It.IsAny <Order>()))
.ReturnsAsync(new PaymentTransaction
{
TransactionId = "TRX-1",
CreateOn = DateTime.Now.AddMinutes(-new Random().Next(100)),
})
.Throws(new Exception("Payment exception"));
var loggerMock = new Mock <ILogger <PaymentsProcessor> >();
var sut = new PaymentsProcessor(ordersRepositoryMock.Object, paymentServiceMock.Object, loggerMock.Object);
// Act
await sut.ProcessOutstandingOrders();
// Assert
loggerMock.VerifyLog(c => c.LogWarning(It.Is <Exception>(paymentException => paymentException.Message.Contains("Payment exception")), "*exception*Reference 2"));
}
public async Task Processing_outstanding_orders_logs_order_and_transaction_data_for_each_completed_payment()
{
// Arrange
var ordersRepositoryMock = new Mock <IOrdersRepository>();
ordersRepositoryMock.Setup(c => c.GetOutstandingOrders())
.ReturnsAsync(GenerateOutstandingOrders(100));
var paymentServiceMock = new Mock <IPaymentService>();
paymentServiceMock
.Setup(c => c.CompletePayment(It.IsAny <Order>()))
.ReturnsAsync((Order order) => new PaymentTransaction
{
TransactionId = $"TRX-{order.OrderReference}"
});
var loggerMock = new Mock <ILogger <PaymentsProcessor> >();
var sut = new PaymentsProcessor(ordersRepositoryMock.Object, paymentServiceMock.Object, loggerMock.Object);
// Act
await sut.ProcessOutstandingOrders();
// Assert
loggerMock.VerifyLog(logger => logger.LogInformation("Order with {orderReference} was paid {at} by {customerEmail}, having {transactionId}",
It.Is <string>(orderReference => orderReference.StartsWith("Reference")),
It.IsAny <DateTime>(),
It.Is <string>(customerEmail => customerEmail.Contains("@")),
It.Is <string>(transactionId => transactionId.StartsWith("TRX"))),
Times.Exactly(100));
}
public async Task Processing_outstanding_orders_logs_batch_size()
{
// Arrange
var ordersRepositoryMock = new Mock <IOrdersRepository>();
ordersRepositoryMock.Setup(c => c.GetOutstandingOrders())
.ReturnsAsync(GenerateOutstandingOrders(100));
var paymentServiceMock = new Mock <IPaymentService>();
paymentServiceMock
.Setup(c => c.CompletePayment(It.IsAny <Order>()))
.ReturnsAsync((Order order) => new PaymentTransaction
{
TransactionId = $"TRX-{order.OrderReference}"
});
var loggerMock = new Mock <ILogger <PaymentsProcessor> >();
var sut = new PaymentsProcessor(ordersRepositoryMock.Object, paymentServiceMock.Object, loggerMock.Object);
// Act
await sut.ProcessOutstandingOrders();
// Assert
loggerMock.VerifyLog(c => c.LogInformation("A batch of 100 outstanding orders was completed"));
}
