SonarQube Test Coverage with MsTest

Both OpenCover and dotCover reports are supported by the C# 4.1 plugin. Set the sonar.cs.dotcover.reportsPaths or sonar.cs.opencover.reportsPaths property respectively for both tools to import code coverage.

Gallio is not exactly the go-to tool: the project is inactive since 2013. The main issue with the SonarQube C# Plugin 2.x plugin which relied on Gallio is that it was launching Gallio by itself - not allowing the end-user to customize how tests should be launched and coverage collected.

Now the situation is much easier: Launch your favorite code coverage tool, ask it to produce a report, and feed it to the MSBuild SonarQube Runner.

If you are using Team Foundation Server 2013, enabling code coverage is as choosing the Enable Code Coverage option in the build definition.

Now, it is very unfortunate and confusing that Microsoft has two different .coveragexml formats, and that the SonarQube C# Plugin only supports one of them (that is, for now. see http://jira.sonarsource.com/browse/SONARNTEST-3).

While waiting for that ticket to be fixed, here are the steps to produce the expected .coveragexml report (note: Replace 14 by 12 in the various paths if you are using VS 2013 instead of 2015):

1. MSBuild.SonarQube.Runner begin /k:SonarQube_Project_Key /n:SonarQube_Project_Name /v:1.0 /d:sonar.cs.vscoveragexml.reportsPaths=%CD%\VisualStudio.coveragexml
2. msbuild
3. "C:\Program Files (x86)\Microsoft Visual Studio 14.0\Team Tools\Dynamic Code Coverage Tools\CodeCoverage.exe" collect /output:VisualStudio.coverage "C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\CommonExtensions\Microsoft\TestWindow\vstest.console.exe" "UnitTestProject1\bin\Debug\UnitTestProject1.dll"
4. "C:\Program Files (x86)\Microsoft Visual Studio 14.0\Team Tools\Dynamic Code Coverage Tools\CodeCoverage.exe" analyze /output:VisualStudio.coveragexml VisualStudio.coverage
5. MSBuild.SonarQube.Runner end

I would not recommend to use XSLTs to convert code coverage report formats, use the CodeCoverage.exe Microsoft tool instead.