This tool merges multiple Cobertura XML files into one single file.
The tool was written because Visual Studio Team Services only takes one Cobertura file as coverage result. Multiple test projects would probably result in multiple files.
The package is published on nuget.org.
dotnet tool install MergeCoberturaXml -g
MergeCoberturaXml -i Project1.xml;Project2.xml;Project3.xml -o Merged.xml