Convert .coverage to .lcov file

[tapika]

In Visual Studio code there exists extension called Coverage Gutters:
https://marketplace.visualstudio.com/items?itemName=ryanluker.vscode-coverage-gutters

That extension is targeted to display code coverage information, based on .lcov file format.
(Target programming languages are: Java, Javascript and so on).

Meanwhile C++ is not supported there, even thus you could use vstest.console.exe from Visual studio to execute the test, and produce .coverage file.

To my best understanding ReportGenerator is already capable of parsing .coverage files, and it has also knowledge of lcov.info, since it's parsing them as well.

How complex would it be to perform conversion from .coverage to lcov.info ?

[danielpalme]

Genrerating lcov.info files is pretty easy. The format is very simple.

*.coverage files are currently not supported. You have to convert them to XML first. See:
https://github.com/danielpalme/ReportGenerator/wiki/Visual-Studio-Coverage-Tools

Should I add support for lcov.info as an output format?

[danielpalme]

I just added support for lcov output format.

You can try the following packages:
https://www.nuget.org/packages/ReportGenerator/4.3.0-rc4
https://www.nuget.org/packages/dotnet-reportgenerator-globaltool/4.3.0-rc4

Please use the following command line parameter:
-reporttypes:lcov

[tapika]

Wow ! It does work. On left side - Visual studio, on right side - Visual Studio code.

Thanks, need to test it bit more.

[tapika]

Is still works on line by line basis, not by scope - but I think it's limitation of visual studio itself.

[tapika]

Microsoft has similar requirement:
https://developercommunity.visualstudio.com/idea/365850/support-lcov-file-format-for-code-coverage.html

But not sure when it will be available.

[danielpalme]

I'm closing this issue. Feel free to reopen if you need further changes.