Opencover Report Generator

[kedigby]

I've been using the report generator by danielpalme, to visualise the output from coverlet.

https://github.com/danielpalme/ReportGenerator

I get errors using this tool since upgrading from 1.0.2 to 1.1.0, I wonder if there is an error in the file being produced, I get the same error message if I try cobertura.

I have reverted back to 1.02 and the reporting tool works.

The error message from the reporting tool was:

Error in Report Generator: Unhandled Exception: System.AggregateException: One or more errors occurred. ---> System.AggregateException: One or more errors occurred. ---> System.NullReferenceException: Object reference not set to an instance of an object. at Palmmedia.ReportGenerator.Parser.OpenCoverParser.GetBranches(XElement[] methods, HashSet1 fileIds)
at Palmmedia.ReportGenerator.Parser.OpenCoverParser.ProcessFile(HashSet1 fileIds, Class class, String filePath) at Palmmedia.ReportGenerator.Parser.OpenCoverParser.ProcessClass(Dictionary2 fileIdsByFilename, Assembly assembly, String className)
at Palmmedia.ReportGenerator.Parser.OpenCoverParser.<>c__DisplayClass12_0.b__9(String className)
at System.Threading.Tasks.Parallel.<>c__DisplayClass17_01.<ForWorker>b__1() at System.Threading.Tasks.Task.InnerInvokeWithArg(Task childTask) at System.Threading.Tasks.Task.<>c__DisplayClass176_0.<ExecuteSelfReplicating>b__0(Object ) --- End of inner exception stack trace --- at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions) at System.Threading.Tasks.Task.Wait(Int32 millisecondsTimeout, CancellationToken cancellationToken) at System.Threading.Tasks.Parallel.ForWorker[TLocal](Int32 fromInclusive, Int32 toExclusive, ParallelOptions parallelOptions, Action1 body, Action2 bodyWithState, Func4 bodyWithLocal, Func1 localInit, Action1 localFinally)
at System.Threading.Tasks.Parallel.ForEachWorker[TSource,TLocal](IEnumerable1 source, ParallelOptions parallelOptions, Action1 body, Action2 bodyWithState, Action3 bodyWithStateAndIndex, Func4 bodyWithStateAndLocal, Func5 bodyWithEverything, Func1 localInit, Action1 localFinally)
at System.Threading.Tasks.Parallel.ForEach[TSource](IEnumerable1 source, Action1 body)
at Palmmedia.ReportGenerator.Parser.OpenCoverParser.ProcessAssembly(String assemblyName)
at Palmmedia.ReportGenerator.Parser.OpenCoverParser.<.ctor>b__5_5(String assemblyName)
at System.Threading.Tasks.Parallel.<>c__DisplayClass17_01.<ForWorker>b__1() at System.Threading.Tasks.Task.InnerInvokeWithArg(Task childTask) at System.Threading.Tasks.Task.<>c__DisplayClass176_0.<ExecuteSelfReplicating>b__0(Object ) --- End of inner exception stack trace --- at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions) at System.Threading.Tasks.Task.Wait(Int32 millisecondsTimeout, CancellationToken cancellationToken) at System.Threading.Tasks.Parallel.ForWorker[TLocal](Int32 fromInclusive, Int32 toExclusive, ParallelOptions parallelOptions, Action1 body, Action2 bodyWithState, Func4 bodyWithLocal, Func1 localInit, Action1 localFinally)
at System.Threading.Tasks.Parallel.ForEachWorker[TSource,TLocal](IEnumerable1 source, ParallelOptions parallelOptions, Action1 body, Action2 bodyWithState, Action3 bodyWithStateAndIndex, Func4 bodyWithStateAndLocal, Func5 bodyWithEverything, Func1 localInit, Action1 localFinally)
at System.Threading.Tasks.Parallel.ForEach[TSource](IEnumerable1 source, Action1 body)
at Palmmedia.ReportGenerator.Parser.OpenCoverParser..ctor(XContainer report)
at Palmmedia.ReportGenerator.Parser.ParserFactory.GetParsersOfFile(String reportFile, ClassSearcherFactory classSearcherFactory, ClassSearcher globalClassSearcher)
at Palmmedia.ReportGenerator.Parser.ParserFactory.CreateParser(IEnumerable1 reportFiles, IEnumerable1 sourceDirectories)
at Palmmedia.ReportGenerator.Generator.GenerateReport(ReportConfiguration reportConfiguration)
at Palmmedia.ReportGenerator.Program.Main(String[] args)`

[tonerdo]

Can I see the error generated when you try to run a report on the Cobertura output? I'm trying to figure out if this is a Coverlet issue

[xakep139]

@tonerdo I've faced similar problem with genhtml (from lcov). Prior to coverlet 1.1.0 the coverage.info file (generated with dotnet test /p:CollectCoverage=true /p:CoverletOutputFormat=lcov) looks like

SF:/builds/ams/vstore/src/VStore.Http.Core/Swashbuckle/ImplicitApiVersionParameter.cs
DA:23,0
DA:27,0
end_of_record

After updating to 1.1.0 coverage.info contains:

SF:/builds/ams/vstore/src/VStore.Host/ActionResults/LockedResult.cs
DA:7,Coverlet.Core.LineInfo
DA:9,Coverlet.Core.LineInfo
end_of_record

And with that coverage.info file I get error:

# genhtml coverage.info
genhtml: ERROR: no valid records found in tracefile coverage.info

After replacing Coverlet.Core.LineInfo with 0, there are no errors

[kedigby]

I was wondering if it's related to the utf16 issue?

And then I double checked the error message for the Cobertura output:

Loading report 'C:\Development\GFS_Seeker\Core.Net\Core\DataAccess.Test\coverage.xml' Error during reading report 'C:\Development\GFS_Seeker\Core.Net\Core\DataAccess.Test\coverage.xml': There is no Unicode byte order mark. Cannot switch to Unicode. Initializing report builders for report types: Html Analyzing 0 classes Creating summary Report generation took 0.3 seconds

I can provide the coverage.xml file if that will help?

[tonerdo]

New NuGet bits: https://www.nuget.org/packages/coverlet.msbuild/1.1.1