When I try to run tests in a VB class library with three of the tests using generics I get this error:

[11:24:27.1537-LocalBuildTask-32] ERROR (Build): TEST_svcHMRMgr_Library: (0): System.NotImplementedException: GenericInst
at _Mono.Cecil.SignatureReader.ReadPrimitiveValue(ElementType type)
at _Mono.Cecil.SignatureReader.ReadCustomAttributeElementValue(TypeReference type)
at _Mono.Cecil.SignatureReader.ReadCustomAttributeElement(TypeReference type)
at _Mono.Cecil.SignatureReader.ReadCustomAttributeElement(TypeReference type)
at _Mono.Cecil.SignatureReader.ReadCustomAttributeFixedArgument(TypeReference type)
at _Mono.Cecil.SignatureReader.ReadCustomAttributeConstructorArguments(CustomAttribute attribute, Collection`1 parameters)
at _Mono.Cecil.MetadataReader.ReadCustomAttributeSignature(CustomAttribute attribute)
at _Mono.Cecil.CustomAttribute.<Resolve>b__32_0(CustomAttribute attribute, MetadataReader reader)
at _Mono.Cecil.ModuleDefinition.Read[TItem,TRet](TItem item, Func`3 read)
at _Mono.Cecil.CustomAttribute.Resolve()
at _Mono.Cecil.CustomAttribute.get_Fields()
at nCrunch.Compiler.CecilReflection.ILHashGenerator.HashCustomAttribute(FNV64& hash, CustomAttribute customAttribute)
at nCrunch.Compiler.CecilReflection.ILHashGenerator.(FNV64& , MethodDefinition )
at nCrunch.Compiler.CecilReflection.ILHashGenerator.HashMethod(MethodDefinition cecilMethod, Int32 stackSize)
at nCrunch.Compiler.CecilReflection.CecilMethod.get_Hash()
at nCrunch.TestExecution.Frameworks.DefaultClassMethodDescriptionLocator.(ReflectedType , ReflectedMethod , SequencePoint , Boolean , FNV64 )
at nCrunch.TestExecution.Frameworks.DefaultClassMethodDescriptionLocator.ExtractClassMemberDataFromType(ReflectedType type, Boolean hashAllMethods)
at nCrunch.Compiler.StaticManipulation.BuiltAssembly.(ReflectedAssembly , IDictionary`2 , TestFrameworkDescription[] , Boolean )
at nCrunch.Compiler.StaticManipulation.BuiltAssembly.ExtractClassMethodData(TestFrameworkDescription[] applicableTestFrameworks, IDictionary`2 codeFileIDsByFilePath, Boolean hashMethods)
at nCrunch.Compiler.RemoteBuildRunner..()
at nCrunch.Common.PerformanceTracking.PerfTracker.TrackActivity(String name, Action activity)
at nCrunch.Compiler.RemoteBuildRunner.(ComponentBuildParameters , FilePath , BuildOutput , DirectoryPath[] , FilePath[] )
at nCrunch.Compiler.RemoteBuildRunner..()
at nCrunch.Common.PerformanceTracking.PerfTracker.TrackActivity(String name, Action activity)
at nCrunch.Compiler.RemoteBuildRunner.(ComponentBuildParameters )

Based on the last term in the error message I see "GenericInst".

So I assume the problem is related to the use of generics.

When I exclude the three test files using generics from the project the build succeeds and I can run tests.

Also interesting:

Yesterday morning I successfully built and ran the tests using generics.

Yesterday afternoon I updated the code to be tested and the test code. No Go.

I'm now trying to narrow this down to a few lines of test code using generics.

After I posted the note I narrowed down the problem to:

<TestCase(ABC_LIB_Search_Criteria(Of String).Input_Format.CSV, "123456789012", {"123456789012"})>

NCrunch doesn't like the (Of String) in the test case. :(

I'll see if I can work around the problem.

NCrunch for Visual Studiuo 2017 3.23.0.10

I looked at all the release notes from builds 3.24 to 3.30. I didn't any notes about fixing bugs related to generics. I'll upgrade anyways and see what happens.

Hi,

Yes, I worked around the problem like this:

<TestCase("CSV")>
<TestCase("Single_Line")>
Public Sub Test(Input_Format AS String)

Select Case Input_Format
Case "CSV"
' Do CSV test.

Case 'Single_Line"

End Select

End Sub

Not the most elegant but works for the time being.

Thanks for the answer.

FYI: I use NCrunch almost every workday. It's one of the most useful tools I use. So I really appreciate that you created it!