帮助做用犀牛模拟

Question

我如何用单位犀牛制品

public interface IXmlTransformer 
{ 
    void Transform(Stream inputXml, Stream transformedXml); 
} 

public class XmlToFOTransformer : IXmlTransformer 
    { 
     private string styleSheetPath = string.Empty; 
     private bool fillable = true; 

     public XmlToFOTransformer(
            string styleSheetUri, 
            bool shouldAllowUserToEditData) 
     { 
      if (string.IsNullOrEmpty(styleSheetUri)) 
      { 
       throw new ArgumentNullException(
           "styleSheetUri", 
           "styleSheetUri can not be null"); 
      } 

      styleSheetPath = styleSheetUri; 
      fillable = shouldAllowUserToEditData; 
     } 

     public void Transform(Stream inputXml, Stream transformedXml) 
     { 
      if (inputXml == null) 
      { 
       throw new ArgumentNullException(
            "inputXml", 
            "Input xml can not be null."); 
      } 

      if (transformedXml == null) 
      { 
       throw new ArgumentNullExceptio(
            "transformedStream", 
            "TransformedStream can not be null."); 
      } 

      XslCompiledTransform transformer = new XslCompiledTransform(); 

      XsltSettings xsltSettings = new XsltSettings(); 
      xsltSettings.EnableDocumentFunction = true; 

      XmlUrlResolver resolver = new XmlUrlResolver(); 

      XmlReaderSettings readerSettings = new XmlReaderSettings(); 
      readerSettings.DtdProcessing = DtdProcessing.Ignore; 

      try 
      { 
       transformer.Load(styleSheetPath, xsltSettings, resolver); 
      } 
      catch (Exception ex) 
      { 
       throw new ApplicationException(string.Format(
         CultureInfo.InvariantCulture, 
         "Error while loding & compiling the Xsl file, the system returned {0}", 
         ex.Message)); 
      } 

      XmlReader inputXmlReader; 
      try 
      { 
       inputXmlReader = XmlReader.Create(inputXml, readerSettings); 
      } 
      catch (Exception ex) 
      { 
       throw new ApplicationException(string.Format(System.Globalization.CultureInfo.InvariantCulture, "Error loading the XML file, the system returned {0}", ex.Message)); 
      } 

      // do the transform    
      try 
      { 
       transformer.Transform(
            inputXmlReader, 
            xsltArguments, 
            transformedXml); 
       transformedXml.Position = 0; 
      } 
      catch (Exception ex) 
      { 
       throw new ApplicationException(string.Format(System.Globalization.CultureInfo.InvariantCulture, "Error in transforming the XML file and XSL file, the system returned {0}", ex.Message)); 
      } 
     } 
    } 

Answer 1

我不会用犀牛制品进行单元测试类测试下面的类单元测试。只需创建一个新的测试，并将一些硬编码的xml发送到方法和MemoryStream。调用Transform方法后，您可以对写入MemoryStream的数据进行断言。

也许你可以解释为什么你想用Rhino Mocks来测试该方法？

Answer 2

的一个问题，我可以看到的是，流paremeters不由接口

void Transform(Stream inputXml, Stream transformedXml); 

抽象但无论如何RhinoMocks允许使用PartialMock功能的抽象类的嘲讽。

因此，测试存根想：（伪代码）

var transformer = new XmlToFOTransformer(
            styleSheetUri, 
            shouldAllowUserToEditData); 

// Arrange 
var inputXmlStreamMock = mockRepository.PartialMock<Stream>(ctor args); 
var transformedXmlStreamMock = mockRepository.PartialMock<Stream>(ctor args); 

// setup expectations 
// ... 

// Act 
transformer.Transform(inputXmlStreamMock, transformedXmlStreamMock); 


// Assert 
// asserts here 

详情参见：Rhino Mocks Partial Mocks