Moq.ILogger.PaymentsProcessor - Processing_outstanding_orders_logs_batch_size - Moq API

Moq.ILogger.PaymentsProcessor.Processing_outstanding_orders_logs_batch_size.moq.cs

[Fact]
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.Verify(c => c.LogInformation("A batch of {0} outstanding orders was completed", 100));
}