TestRunType serialization throwing an exception

Question

I am trying to parse some trx files (webTestResults) to output synthetic excel files.

first I take the trx xsd schema (vstst.xsd in the visual studio directory) to create a bunch of C # classes.

then I try to create an instance of XmlSerializer based on the type of TestRunType (generated from the schema).

XmlSerializer xmlSer = new XmlSerializer(typeof(TestRunType)); 

An exception is thrown as a result of creating the XMLSerializer:

 System.InvalidOperationException: There was an error reflecting type 'TestRunType'. ---> System.InvalidOperationException: There was an error reflecting property 'Items'. ---> System.InvalidOperationException: There was an error reflecting type 'TestRunTypeTestDefinitions'. ---> System.InvalidOperationException: There was an error reflecting property 'Items'. ---> System.InvalidOperationException: There was an error reflecting type 'OrderedTestType'. ---> System.InvalidOperationException: There was an error reflecting type 'CodedWebTestElementType'. ---> System.InvalidOperationException: There was an error reflecting property 'Items'. ---> System.InvalidOperationException: Member 'CodedWebTestElementType.Items' hides inherited member 'BaseTestType.Items', but has different custom attributes. at System.Xml.Serialization.StructMapping.FindDeclaringMapping(MemberMapping member, StructMapping& declaringMapping, String parent) at System.Xml.Serialization.XmlReflectionImporter.InitializeStructMembers(StructMapping mapping, StructModel model, Boolean openModel, String typeName, RecursionLimiter limiter) 

what are the user attributes? Just the beginning of BaseTestType:

 public abstract partial class BaseTestType { private object[] itemsField; private bool enabledField; private string idField; private string nameField; private bool isGroupableField; private int priorityField; private string namedCategoryField; private string storageField; public BaseTestType() { this.enabledField = true; this.isGroupableField = true; this.priorityField = 2147483647; this.namedCategoryField = ""; } /// <remarks/> [System.Xml.Serialization.XmlElementAttribute("Agent", typeof(BaseTestTypeAgent))] [System.Xml.Serialization.XmlElementAttribute("Css", typeof(BaseTestTypeCss))] [System.Xml.Serialization.XmlElementAttribute("DeploymentItems", typeof(BaseTestTypeDeploymentItems))] [System.Xml.Serialization.XmlElementAttribute("Description", typeof(object))] [System.Xml.Serialization.XmlElementAttribute("Execution", typeof(BaseTestTypeExecution))] [System.Xml.Serialization.XmlElementAttribute("Owners", typeof(BaseTestTypeOwners))] [System.Xml.Serialization.XmlElementAttribute("Properties", typeof(BaseTestTypeProperties))] [System.Xml.Serialization.XmlElementAttribute("TcmInformation", typeof(TcmInformationType))] [System.Xml.Serialization.XmlElementAttribute("TestCategory", typeof(BaseTestTypeTestCategory))] [System.Xml.Serialization.XmlElementAttribute("WorkItemIDs", typeof(WorkItemIDsType))] public object[] Items { get { return this.itemsField; } set { this.itemsField = value; } } 

And CodedWebTestElementType:

 /// <remarks/> [System.CodeDom.Compiler.GeneratedCodeAttribute("xsd", "4.0.30319.1")] [System.SerializableAttribute()] [System.Diagnostics.DebuggerStepThroughAttribute()] [System.ComponentModel.DesignerCategoryAttribute("code")] [System.Xml.Serialization.XmlTypeAttribute(Namespace="http://microsoft.com/schemas/VisualStudio/TeamTest/2010")] public partial class CodedWebTestElementType : BaseTestType { private object[] itemsField; /// <remarks/> [System.Xml.Serialization.XmlElementAttribute("IncludedWebTests", typeof(CodedWebTestElementTypeIncludedWebTests))] [System.Xml.Serialization.XmlElementAttribute("WebTestClass", typeof(CodedWebTestElementTypeWebTestClass))] public object[] Items { get { return this.itemsField; } set { this.itemsField = value; } } } 

Can someone explain to me what the problem is?

thanks...

Answer 1

The solution is to remove the Items property from the derived classes ( CodedWebTestElementType and GenericTestType ), and also move the serialization attributes to the base class so as not to miss the values ​​if you have a coded web test or general test.

IOW, the solution is as follows.

First remove the Items property from CodedWebTestElementType type

 /// <remarks/> [System.CodeDom.Compiler.GeneratedCodeAttribute("xsd", "4.0.30319.1")] [System.SerializableAttribute()] [System.Diagnostics.DebuggerStepThroughAttribute()] [System.ComponentModel.DesignerCategoryAttribute("code")] [System.Xml.Serialization.XmlTypeAttribute(Namespace="http://microsoft.com/schemas/VisualStudio/TeamTest/2010")] public partial class CodedWebTestElementType : BaseTestType { } 

Then move the two XmlElementAttribute attributes to the BaseTestType base class (see the last two):

 /// <remarks/> [System.Xml.Serialization.XmlElementAttribute("Agent", typeof(BaseTestTypeAgent))] [System.Xml.Serialization.XmlElementAttribute("Css", typeof(BaseTestTypeCss))] [System.Xml.Serialization.XmlElementAttribute("DeploymentItems", typeof(BaseTestTypeDeploymentItems))] [System.Xml.Serialization.XmlElementAttribute("Description", typeof(object))] [System.Xml.Serialization.XmlElementAttribute("Execution", typeof(BaseTestTypeExecution))] [System.Xml.Serialization.XmlElementAttribute("Owners", typeof(BaseTestTypeOwners))] [System.Xml.Serialization.XmlElementAttribute("Properties", typeof(BaseTestTypeProperties))] [System.Xml.Serialization.XmlElementAttribute("TcmInformation", typeof(TcmInformationType))] [System.Xml.Serialization.XmlElementAttribute("TestCategory", typeof(BaseTestTypeTestCategory))] [System.Xml.Serialization.XmlElementAttribute("WorkItemIDs", typeof(WorkItemIDsType))] [System.Xml.Serialization.XmlElementAttribute("IncludedWebTests", typeof(CodedWebTestElementTypeIncludedWebTests))] [System.Xml.Serialization.XmlElementAttribute("WebTestClass", typeof(CodedWebTestElementTypeWebTestClass))] public object[] Items { get { return this.itemsField; } set { this.itemsField = value; } } 

After that, do the same for the GenericTestType class.

This way you will not lose information if you receive IncludedWebTests , WebTestClass , command or SummaryXmlFile nodes one day.