at least german and english would be nice :-)

as the powershell API only supports upload of nunit2 testresults, this version uses a dummy test result file (which shows always 1 Test as ok) to generate the testrun on which the opencover result xml is then attached.
If I can find a way to convert the Nunit3 test results to something the TFS can understand by uploading, this should be included in the build step.

If the repository root, some of the project directories or dll filenames contain a blank in the name the Nunit3 consolen runner does not execute any tests.

If you combine more than one test dll into one single run and there are modules called from more than one test dll then the results are listed as seperate node in the details table.

The coverage of all runs should be combined to a single 'module' result for each module with same unique id. This is also basis to have a correct summary of coverage percentage because you can have one test dll making 10% another 20% but together the covered part could be something between 20% - 30% but you can not only add this values here. You have to combine the different module results and the coverage of sequence/branch points!

This is due to the usage of Junit conversion in between Nunit3 and TFS. Have not checked where the values got mixed up ( in the Nunit XSLT transform or int the Junit Import task in TFS.....)

I hope to find a better/more direct way to import the results iso fixing this convertion.

If the OpenCover result file is larger than 65537 bytes the result pages do not render.
Reason is the Usage of the String.fromCharCode in Javascript. This doies not allow for larger binary data.

Comparing numbers from the report artifact with the percentage numbers of the TFS summary page shows differences.

Reason is that the TFS GUI plugin does calculate the numbers directly from result.xml. Interpretation of the result file is done different from the report generator. (e.g. "Lines" are not correctly counted only Sequence points are counted....)