模拟xml文件以使用Rhinomocks进行单元测试
[英]Mocking xml file for unit testing with Rhinomocks
问题描述
I want to mock xml used as below for unit tests.I am using Rhinomocks framework for mocking.How can I unit test my methods by not using the actual xml file.Do I have to change my code structure. 
我想模拟如下用于单元测试的xml。我正在使用Rhinomocks框架进行模拟。如何通过不使用实际的xml文件来对我的方法进行单元测试。我是否必须更改代码结构。
[ServiceBehavior(InstanceContextMode = InstanceContextMode.Single)]
public class MyService : IMyService
{
private readonly string mSchemaPath = Path.Combine(HostingEnvironment.ApplicationPhysicalPath, "App_Data",
"schema_0.1.xsd");
private readonly string mXmlPath = Path.Combine(HostingEnvironment.ApplicationPhysicalPath, "App_Data",
"MyDataRecords.xml");
private XDocument mXDocument;
public MyService()
{
try
{
//load xml document
mXDocument = XDocument.Load(mXmlPath);
if (mXDocument == null)
{
throw new Exception("Null returned while reading xml file");
}
}
catch (Exception e)
{
//my exception management code
}
}
public List<MyDataRecords> GetAllRecords()
{
////fetch records from xDocument
mXDocument.Save();
}
public void AddRecord(MyRecord record)
{
////add record
mXDocument.Save();
}
2 个解决方案
解决方案1
1 2014-07-03 02:52:19
UPDATED: 更新：
I've modified your MyService class to have an overloaded constructor, which accepts Func<string, XDocument> to load an XDocument, and also Func<string> to resolve the value that corresponds to HostingEnvironment.ApplicationPhysicalPath . 我修改了MyService类，使其具有重载的构造函数，该构造函数接受Func<string, XDocument>加载XDocument，还接受Func<string>解析与HostingEnvironment.ApplicationPhysicalPath相对应的值。 When the default constructor is called, the same call to XDocument.Load is performed, and likewise for using HostingEnvironment.ApplicationPhysicalPath in building the path to the xml and xsd files. 调用默认构造函数时，将对XDocument.Load进行相同的调用，同样使用HostingEnvironment.ApplicationPhysicalPath来构建xml和xsd文件的路径。
However in an unit test you could call the other constructor like this: 但是，在单元测试中，您可以像这样调用其他构造函数：
const string mockDirectory = "TEST";
var expectedXmlPath = Path.Combine(mockDirectory, "App_Data", "MyDataRecords.xml");
string xmlPathPassed = "";
var service = new MyService(path =>
{
xmlPathPassed = path;
return XDocument.Parse("<note><to>Tove</to><from>Jani</from><heading>Reminder</heading><body>Don't forget me this weekend!</body></note>");
},
() => mockDirectory);
Assert.Equal(expectedXmlPath, xmlPathPassed);
You could also expose the XDocument on the Service, perhaps through a readonly property and check that the XDocument represents the Mocked xml. 您也可以通过只读属性在服务上公开XDocument，并检查XDocument是否表示Mocked xml。
MyService: 为MyService：
public class MyService : IMyService
{
private const string AppDataDirectoryName = "App_Data";
private const string SchemaFileName = "schema_0.1.xsd";
private const string XmlFileName = "MyDataRecords.xml";
private readonly Func<string, XDocument> mdocumentLoader;
private readonly Func<string> mAppDataDirectoryBuilder;
private readonly string mSchemaPath = "";
private readonly string mXmlPath = "";
private XDocument mXDocument;
public MyService() : this(XDocument.Load, () => HostingEnvironment.ApplicationPhysicalPath)
{
}
public MyService(Func<string, XDocument> documentLoader, Func<string> appDataDirectoryBuilder)
{
mdocumentLoader = documentLoader;
mAppDataDirectoryBuilder = appDataDirectoryBuilder;
try
{
var baseDirectory = mAppDataDirectoryBuilder();
mSchemaPath = Path.Combine(baseDirectory, AppDataDirectoryName, SchemaFileName);
mXmlPath = Path.Combine(baseDirectory, AppDataDirectoryName, XmlFileName);
mXDocument = mdocumentLoader(mXmlPath);
if (mXDocument == null)
{
throw new Exception("Null returned while reading xml file");
}
}
catch (Exception e)
{
//my exception management code
}
}
public List<MyRecord> GetAllRecords()
{
////fetch records from xDocument
return null;
//mXDocument.Save();
}
public void AddRecord(MyRecord record)
{
////add record
// mXDocument.Save(record);
}
} }
解决方案2
0 已采纳 2014-07-04 07:10:47
[assembly: InternalsVisibleTo("MyService.UnitTests")]
public class MyService : IMyService
{
private readonly string mSchemaPath;
private readonly string mXmlPath;
public MyService()
: this(
Path.Combine(HostingEnvironment.ApplicationPhysicalPath, "App_Data", "MyDataRecords.xml"),
Path.Combine(HostingEnvironment.ApplicationPhysicalPath, "App_Data", "schema_0.1.xsd"))
{
}
internal MyService(string xmlPath,string schemaPath)
{
try
{
mXmlPath=xmlPath;
mSchemaPath=schemaPath;
//load xml document
mXDocument = Xdocument.Laod(mXmlPath);
if (mXDocument == null)
{
throw new Exception("Null returned while reading xml file");
}
}
catch (Exception e)
{
//my exception management code
}
}
public List<MyRecord> GetAllRecords()
{
////fetch records from xDocument
mXDocument.Save();
}
public void AddRecord(MyRecord record)
{
////add record
mXDocument.Save();
}
} }
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