How to fix: NUnit unit tests not showing up in testing pad in Visual Studio Community (Mac)

Question

In spite of adding NUnit from NuGet to an existing .Net Core project, no unit tests are being shown in the Test Pad.

Note: I posted these images as links because I have

Answer 1

As lex-li comments, you should install the nuget version of the adapter (https://www.nuget.org/packages/NUnit3TestAdapter/3.12.0).
You install this into your solution, preferably for all test projects.

(The adapter on the marketplace is the vsix adapter, which can be installed into VS itself - but this practice is not recommended and as you points out, doesn't even seem to work for Mac Community version.)