Reportgenerator: Bug in conversion from format Cobertura to Html for partial classes

[lifemanship]

There is issue when we convert Cobertura XML to HTML
When we generate report for partial classes Generator merges all coverage to the first part of partial classes.

[danielpalme]

That's the intended behavior.
Coverage is grouped by class and not by file.
Therefore a partial class is handled as a single element and shows all corresponding files.

[lifemanship]

I prepared simple test solution which will show difference between code coverage in html format after conversion from Cobertura and OpenCover formats.
TestCoveragePartialClasses.zip

The Coverage.zip contains:
Coverage.zip

• UnitTests.xmlCobertura.UnitTests.TestCoveragePartialClasses.results.xml - coverage created by dotnet with options dotnet test TestCoveragePartialClasses.sln --no-build /p:CollectCoverage=true /p:CoverletOutputFormat=cobertura

• UnitTests.xmlOpenCover.UnitTests.TestCoveragePartialClasses.results.xml - coverage created by dotnet with options dotnet test TestCoveragePartialClasses.sln --no-build /p:CollectCoverage=true /p:CoverletOutputFormat=opencover

  • folder cobertura.html - report converted from Cobertura.UnitTests.TestCoveragePartialClasses.results.xml by ReportGenerator.exe with option -reporttypes:Html

  • folder opencover.html -report converted from OpenCover.UnitTests.TestCoveragePartialClasses.results.xml by ReportGenerator.exe with option -reporttypes:Html

As you can see the Html report converted from OpenCover.UnitTests.TestCoveragePartialClasses.results.xml contains valid coverage

While the Html report converted from Cobertura.UnitTests.TestCoveragePartialClasses.results.xml contains merged coverage(which is invalid):

[danielpalme]

Thanks for providing a minimal sample. Now I have understood the problem.

It's already fixed. A new release (4.3.6) should be available within the next 30 minutes.