Question

我正在尝试模拟一种使用HttpContent.ReadAsStreamAsync（）作为输入参数之一的方法。我正在尝试验证是否使用预期的“ System.IO.Stream”参数调用了此方法，但是“验证”失败，因为使用“ ReadOnlyStream”参数调用了测试运行，但是使用“ MemoryStream”参数进行了验证。我正在使用NUnit和Moq。我在下面粘贴了源代码和单元测试的可演示版本。请帮忙。预先感谢。

源代码

public class TestController: ApiController
{
    private readonly IProcessRepo _repo;

    public TestController(IProcessRepo repo)
    {
        _repo = repo;
    }

    [HttpGet]
    public async Task<IHttpActionResult> GetRecords()
    {
        var streamProvider = await Request.Content.ReadAsMultipartAsync();
        foreach (var postedFile in streamProvider.Contents)
        {
            var result = _repo.Upload("file", await postedFile.ReadAsStreamAsync());
        }

        return Ok();
    }
}

public class ProcessRepo: IProcessRepo
{
    public bool Upload(string type, Stream contentStream)
    {
         //Upload Code here
         return true;
    }
}

public interface IProcessRepo
{
    bool Upload(string type, Stream contentStream);
}

单元测试

[TestFixture]
public class TestControllerTests
{
    [Test]
    public async Task RunTest()
    {
        //Arrange
        var mockProcessRepo = new Mock<IProcessRepo>();
        var controller = new TestController(mockProcessRepo.Object);
        mockProcessRepo.Setup(s => s.Upload(It.IsAny<string>(), It.IsAny<Stream>())).Returns(true);

        HttpRequestMessage request = new HttpRequestMessage();
        byte[] fileContents = GenerateRandomByteArray();
        Stream memStream = new MemoryStream(fileContents, false);
        MultipartFormDataContent multiPartContent = new MultipartFormDataContent("----MyGreatBoundary");
        ByteArrayContent byteArrayContent = new ByteArrayContent(fileContents);
        byteArrayContent.Headers.Add("Content-Type", "application/octet-stream");
        multiPartContent.Add(byteArrayContent, "Bundle");
        request.Content = multiPartContent;

        controller.Request = request;
        controller.Request.SetConfiguration(new HttpConfiguration());

        //Act
        var response = await controller.GetRecords();

        //Assert
        mockProcessRepo.Verify(s => s.Upload("file", memStream), Times.Once);
    }

    private byte[] GenerateRandomByteArray()
    {
        byte[] fileContents = new byte[20];
        (new Random()).NextBytes(fileContents);

        return fileContents;
    }
}

它在“验证”行（“声明”部分）失败，表示调用是通过“ ReadOnlyStream”参数发生的，但已通过“ MemoryStream”参数进行了验证。

下面是来自测试运行程序的错误消息。

消息：Moq.MockException：
  预期对该模拟调用一次，但为0次：s => s.Upload("file", MemoryStream)

配置的设置：
  IProcessRepo s => s.Upload(It.IsAny<String>(), It.IsAny<Stream>())

执行的调用：
  IProcessRepo.Upload("file", ReadOnlyStream)

为单元测试设置HttpContent.ReadAsStreamAsync

0 个答案: