Custom engine extensions are no longer loaded from user workspace via *.addins file

[nvborisenko]

Using NUnit3TestAdapter v5.2.0:

dotnet new nunit
dotnet add package ReportPortal.NUnit
dotnet test

Output:

/home/runner/work/agent-net-nunit/agent-net-nunit/src/ReportPortal.NUnitExtension/ReportPortalListener.cs(58): error TESTERROR: 
      /Users/Mikalai_Barysenka/Projects/Temp/NUnitTest6/bin/Debug/net8.0/NUnitTest6.dll (< 1ms): Error Message: System.Collections.Generic.KeyNotFoundException
      : Property 'Server:Url' not found in the configuration. Make sure you have configured it properly.

It is OK, indicates that custom extension is loaded. Here ReportPortal.NUnit is custom extension. This package adds ReportPortal.addins file in bin\Debug directory to be picked up by engine extension loader.

Now if we upgrade NUnit3TestAdapter to v6.1.0, then extension is not picked up.

Test summary: total: 1, failed: 0, succeeded: 1, skipped: 0, duration: 2,7s

Most likely the behaviour has been changed in scope of #488