Why is the Visual Studio 2015/2017/2019 Test Runner not discovering my xUnit v2 tests

Answer 1

Ran into a similar problem with VS not discovering test methods. In my case I had the static keyword with the method, which I removed and it worked.

[TestMethod]

Before: public static void Test1()

After: public void Test1()

Answer 2

I am using xUnit 2.2.0.

My issue was my solution was not able to find certain dlls and app.config was trying to resolve them. The error was not showing up in the test output window in Visual Studio.

I was able to identify the error when I installed xunit.runner.console and tried to run the tests through command line.

How to run xunit tests in CLI.

Answer 3

After spending 2 days... none of the above worked for me. The only "solution" was: Go to project properties -> Build Tab. Then click Advanced button on the right bottom corner of the pane. Change "Debug Info:" to "full" and click OK.

Here are the screen shots:

Answer 4

I had to change the Test Settings after changing the test projects CPU to x64. Then the tests where detected again.

Answer 5

In my case, I had 2 different test projects in the solution. Project 1 tests could be found, but Project 2 tests could not. I found that first Unloading the test Project 1, then closing VS > clearing my temp files > re-open solution > rebuild, allowed VS to discover my Project 2 tests.

I'm assuming something must be conflicting between the two test projects and this was the quickest way to get me up and running in a few minutes. The kinks can be worked out later :).

Answer 6

Make sure that your test class is public.