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Mocking System.Xml.XmlNode - TargetInvocationException

0 votes
I am currently testing code that implements a custom configuration section handler. All validation takes place when the configuration node is read, so my tests will incorporate many different values for attributes on the XmlNode (this node is usually supplied by the .NET Framework in a call to IConfigurationSectionHandler.Create())

I would like to mock an instance of XmlNode to return the wide array of values that I will test. I tried 
MockObject configXmlMock = MockManager.MockObject(typeof(XmlNode));

but I received this exception:
TestCase 'MyTestHarness.Load' failed: System.Reflection.TargetInvocationException : Exception has been thrown by the target of an invocation.
----> System.MethodAccessException : System.Xml.XmlNode..ctor()
at System.RuntimeType.CreateInstanceImpl(Boolean publicOnly)
at System.Activator.CreateInstance(Type type, Boolean nonPublic)
at System.Activator.CreateInstance(Type type)
at TypeMock.s.b(Type A_0)
at TypeMock.MockManager.MockObject(Type type, Constructor mockConstructors, Object[] args)
at TypeMock.MockManager.MockObject(Type type, Object[] args)
MyTestHarness.Load()
--TargetInvocationException
at MockXmlNode..ctor()

Using Reflector, I opened up System.Xml.dll and noticed that the XmlNode constructor is marked internal. I'm guessing that I cannot even access the constructor, and this is my problem.

Am I SOL?
asked by bwatts
Report User
 (600 points)

1 Answer

0 votes
Hi
I'm guessing that I cannot even access the constructor, and this is my problem.


This is the same problem as in the last response in previous topic

This feature will added in a future version. To workaround you must create the real node. 
// mock next XmlAttribute
Mock configXmlMock = MockManager.Mock(typeof(XmlAttribute));
// args for XmlAttribute
object[] args = new object[] { "prefix", "localName", "namespace", 
     xmlDoc};
// create the XmlNode
XmlNode mockedXmlNode =Activator.CreateInstance(typeof(XmlAttribute),
 BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
 null,args,null) as XmlNode;
answered by scott
Report User
 (32k points)
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