Question

我正在为mocking创建QueueClient。我在GetQueueClient中有ServiceBus class。我正在使用以下代码。

using NUnit.Framework;
using Moq;    

[TestFixture]
    public sealed class FetchingTest
    {
        private Mock<IServiceBus> mockIServiceBus;
        private Mock<QueueClient> queueClient1;

        [TestFixtureSetUp]
        public void Setup()
        {
            this.mockIServiceBus = new Mock<IServiceBus>();
            this.queueClient1 = new Mock<QueueClient>();
        }

        [Test]
        public void TestPagingUsesCorrectOffsets()
        {
            this.mockIServiceBus.Setup(p => p.GetQueueClient(Constants.FetcherQueueName)).Returns(queueClient1.Object); // Getting error here
        }
    }

服务总线类别：

using Microsoft.ServiceBus;
public class ServiceBus : IServiceBus
    {
private static readonly string ServiceBusConnectionString =
            ConfigurationManager.AppSettings[ConnectionStringNames.ServiceBus];

public QueueClient GetQueueClient(string queueName)
        {
            return QueueClient.CreateFromConnectionString(ServiceBusConnectionString, queueName);
        }
}

它抛出错误

父级没有默认的构造函数。默认构造函数必须明确定义。 System.NotSupportedException

有人可以帮我解决这个问题吗？

Answer 1

引用QueueClient Class

请确保您依赖于抽象而非实现，以避免对实现存在问题。

public interface IServiceBus {
    IQueueClient GetQueueClient(string queueName);
}

public class ServiceBus : IServiceBus {
    private static readonly string ServiceBusConnectionString =
        ConfigurationManager.AppSettings[ConnectionStringNames.ServiceBus];

    public IQueueClient GetQueueClient(string queueName) {
        return QueueClient.CreateFromConnectionString(ServiceBusConnectionString, queueName);
    }
}

这种方式可以在测试时根据需要模拟抽象

[TestFixture]
public sealed class FetchingTest
{
    private Mock<IServiceBus> mockIServiceBus;
    private Mock<IQueueClient> queueClient1;

    [TestFixtureSetUp]
    public void Setup() {
        this.mockIServiceBus = new Mock<IServiceBus>();
        this.queueClient1 = new Mock<IQueueClient>();
    }

    [Test]
    public void TestPagingUsesCorrectOffsets() {
        //Arrange
        this.mockIServiceBus
            .Setup(_ => _.GetQueueClient(Constants.FetcherQueueName))
            .Returns(queueClient1.Object);

        //...
    }
}

在Microsoft ServiceBus中对QueueClient进行NUnit测试

1 个答案: