Visual Studio 2013 doesn't discover unit tests

Question

I have a simple solution in visual studio 2013 that is composed by one web project, one library project and one unit test project. When I open the solution and try to run th

Answer 1

Be sure your all projects are runing with the same configuration. Under your project's Properties => Debug => Platform in drop down list choose the appropriate platform (for me it was "Any CPU") as determined at your other projects.

Answer 2

I'm having this issue from time to time. What works for me is to shutdown Visual Studio and go to folder:

%LocalAppData%\Microsoft\VisualStudio\12.0\ComponentModelCache

and delete it content.

Once you open Visual Studio and load your project again Test Explorer should contain back your tests

Answer 3

My problem was because my unit test method wasn't void, and it was receiving parameters.

Answer 4

go to the project menu > Configuration Manager check your test project platform matches the rest of the project and is check to build then rebuild.

Answer 5

Had the same issue; tests suddenly stopped being discovered.

Nunit Test Adapter had become disabled somehow. Clicking enable in the extension manager fixed it for me.

Answer 6

To get tests to show in the Test Explorer Window I had to install NUnit3 Test Adapter 3.0 which was not available in Package Manager.

Downloaded from https://visualstudiogallery.msdn.microsoft.com/0da0f6bd-9bb6-4ae3-87a8-537788622f2d