NServiceBus 单元测试：bus.Send() 时 ExpectSend 未实现

Question

我正在使用 NServiceBus5.2.21、NServiceBus.Testing5.2.1、Moq4.0.1、NUnit3.2.0

问题：ExpectSend<> 一直失败

"ExpectedSendInvocation not fulfilled"

当 _bus.Send() 被正确调用时。不确定我在这里遗漏了什么。

测试：

[TestFixture]
public class GeneralLedgerHanlderTest
{
    private Mock<ISendGeneralLedgerToSap> _toSapMock;

    [SetUp]
    public void Setup()
    {
        _toSapMock = new Mock<ISendGeneralLedgerToSap>();
        _toSapMock.Setup(x => x.SendSoapMessageToSap(It.IsAny<GeneralLedgerSapCommand>()));
    }

    [Test]
    public void HandlerMustSendAuditLog()
    {
       NServiceBus.Testing.Test.Handler(bus => new GeneralLedgerToSapHandler(bus, _toSapMock.Object))
            .ExpectSend<GeneralLedgerAuditCommand>(command => command.SagaReferenceId == "ab")
            .OnMessage(new GeneralLedgerSapCommand { SagaReferenceId = "ab" });
    }
}

处理程序：

public class GeneralLedgerToSapHandler : IHandleMessages<GeneralLedgerSapCommand>
{
    private readonly IBus _bus;
    private readonly ISendGeneralLedgerToSap _sendSoapToSap;

    public GeneralLedgerToSapHandler(IBus bus, ISendGeneralLedgerToSap sendSoapToSap)
    {
        _bus = bus;
        _sendSoapToSap = sendSoapToSap;
    }

    public void Handle(GeneralLedgerSapCommand message)
    {
        _sendSoapToSap.SendSoapMessageToSap(message);

        var goodsReceiptAuditCommand = new GeneralLedgerAuditCommand
        {
            SagaReferenceId = message.SagaReferenceId,
        };

        _bus.Send(EndPointName.SpmAuditLogService, goodsReceiptAuditCommand);
    }
}

Answer 1

这有点难以理解，但问题是由于您使用发送：

_bus.Send(EndPointName.SpmAuditLogService, goodsReceiptAuditCommand);

您要发送到特定目的地（我建议改用路由）。

测试框架有一个特定的 "Expect" 选项用于发送到特定的目的地。如果您改用 ExpectSendToDestination，您的测试应该可以正常工作：

.ExpectSendToDestination<GeneralLedgerAuditCommand>((command, destination) => command.SagaReferenceId == "ab")

在NServiceBus.Testing v6（依赖于NServiceBus v6）中，这个问题已经修复，ExpectSend发送到特定目的地时也会被调用。

编辑：我在 NServiceBus.Testing 中提出了一个关于这种令人困惑的行为的问题，请参阅 https://github.com/Particular/NServiceBus.Testing/issues/122

NServiceBus 单元测试：bus.Send() 时 ExpectSend 未实现

NServiceBus unit testing: ExpectSend not fulfilled when bus.Send()

c#

nunit

unit-testing

moq

nservicebus5