I've done a bit more digging and tried to set up custom charts for coverage myself, by adding:

     <graph title="NCoverage" seriesTitle="Coverage">
          <valueType key="CodeCoverageB" title="Block-level" buildTypeId="bt2" />
          <valueType key="CodeCoverageC" title="Class-level" buildTypeId="bt2" />
          <valueType key="CodeCoverageL" title="Line-level" buildTypeId="bt2" />
          <valueType key="CodeCoverageM" title="Method-level" buildTypeId="bt2" />
     </graph>

to the main-config.xml file and re-running the build.  A blank graph is displayed.

I'm running nunit-console.exe from an executable in my source-control checkout, within the rake build-runner.  The command that gets executed is:

"C:/BuildAgent/work/7cf06bbc131e6c5d/3rdparty/nunit/bin/net-2.0/nunit-console.exe" "C:\BuildAgent\work\7cf06bbc131e6c5d\project\build\out\bin\Foo.Tests.dll" /xml="C:\BuildAgent\work\7cf06bbc131e6c5d\project\build\out\reports\nunit\Foo.Tests\Foo.Tests.nunit.xml"

I'm not using the built-in TeamCity NUnit Launcher because I wasn't able to find out how to supply the location of the executable to my rake build-script.  I thought it would be written into an environment variable.

I'm experimenting some more with that in parallel - but shouldn't the fact that I'm publishing (as far as I can tell successfully) the code-coverage files to TeamCity via service-message mean that the feature engages?

I use the rake build-runner.

What is wrong with the service-message I'm emitting?  Here's a copy-paste from the build-log

[Execute out/reports/ncover/Foo.Tests.coverage.xml] ##teamcity[importData type='dotNetCoverage' tool='ncover3' path='C:/BuildAgent/work/7cf06bbc131e6c5d/project/build/out/reports/ncover/Foo.Tests.coverage.xml']

I don't want to use the nunit-launcher because I don't want to run all of the tests all at once - I want to run first the unit-tests (which are fastest) then other, slower test suites.

I am, however, using the nunit-addin when running the test suites.  I noticed that there're a log entries to say it's watching a path, but didn't find anything.  Is that related?  Do the coverage report files have to get output to the same directory...?

[11:27:03]: NUnit report watcher
[11:27:03]: [NUnit report watcher] no files found
[11:27:03]: [NUnit report watcher] C:\BuildAgent\work\7cf06bbc131e6c5d\xml="C:\BuildAgent\work\7cf06bbc131e6c5d\project\build\out\reports\nunit\Foo.Tests\Foo.Tests.nunit.xml" couldn't find any matching files

Can I email you a log rather than post it to a public forum, please?

I use the rake build-runner.  There is no option within it to enable .NET code-coverage.

Hi Marina

I sent you as much as I could a few days ago, but have had no response or acknowledgement.  Please could you confirm whether or not you received it?

Cheers

Pete