Making NUnit tests run in Team City for NUnit 3.x

Team City has several bugs when it comes to running NUnit tests. The following guide shows how you can prepare the Team City build agent to run NUnit 3.x tests. We need first to install NUnit Console runner Tips around this was found in the following Stack Overflow thread: This is also mentioned in the documentation of Team City: First off, add two Command line steps and add the two commands into each step - this step can be run at the start of the pipeline in Team City.


%teamcity.tool.NuGet.CommandLine.DEFAULT%\tools\nuget.exe install NUnit.Console -version 3.10.0 -o packages  -ExcludeVersion -OutputDirectory %system.teamcity.build.tempDir%\NUnit %teamcity.tool.NuGet.CommandLine.DEFAULT%\tools\nuget.exe install NUnit.Extension.NUnitProjectLoader -version 3.6.0 -o packages

The following Nuget packages for NUnit was used:

• NUnit 3.2.0
• NUnit.ConsoleRunner 3.10.0
• NUnit.Extension.NUnitProjectLoader 3.6.0
• NUnit.Extension.TeamCityEventListener 1.0.7
• NUnit3TestAdapter 3.16.1

Inside the NUnit runner type step, configure also the NUnit console path: Use this path:
packages\NUnit.ConsoleRunner.3.8.0\tools\nunit3-console.exe For the testassemblies make sure you use a path like this: **\bin\%BuildConfiguration%\*.Test.dll Add the %BuildConfiguration% parameter and set it to: Debug
More tips here: https://stackoverflow.com/questions/57953724/nunit-teamcity-process-exited-with-code-4

And here:
https://stackoverflow.com/questions/36996564/nunit-3-2-1-teamcity-could-not-load-file-or-assembly-nunit-framework

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