nunit-3.0

I have an ASP.Net Core 2.0 web application I am retrofitting with unit tests (using NUnit). The application works fine, and most of the tests thus far work fine. However, testing the authentication/authorization (does a user get logged in and can access [Authorize] filtered actions) is failing with... System.ArgumentNullException: Value cannot be null. Parameter name: provider ...after... await HttpContext.SignInAsync(principal); ...but it is not clear what in fact is the underlying cause. Code execution stops in the called method here and no exception is shown in the IDE but code execution

NUnit 3.0 is supported by TeamCity 9.1.x now however you have to install the runner and specify the path to the nunit3.console.exe in the step. My question is where do I copy the nunit3-console.exe? Do I have to put this on all the agents? Do I put it in a directory on my main TeamCity server and it will get shared or pulled by the agents? There doesn't seem to be good documentation on where to copy these files so that all the agents can use them. You should have the NUnit console on the each agent where you would like to run NUnit tests. The best option is: Add reference to the NuGet package

I have a webappliction with a separate test-project using NUnit to run unittests. When my test-project is trying to discover tests I run into the following exception: An exception occurred while test discoverer 'NUnit3TestDiscoverer' was loading tests. Exception: Could not load file or assembly 'nunit.engine, Version=3.7.0.0, Culture=neutral, PublicKeyToken=2638cd05610744eb' or one of its dependencies. The system cannot find the file specified. This is of course a very common error, but I can't find a reference to this particular assembly anywhere or what other dependency is actually causing