Why does Intellij IDEA suddenly not recognize tests in test folder anymore?

Question

I\'m using JUnit since I started this project and everything works just fine. I have a couple of hundreds tests, and of course, here and there I start them all. Right click on r

Answer 1

None of the previous answers worked for me in IDEA 2019.1.2 (or -.3) with Junit Jupiter 5.5.0. I had git-cloned a couple of projects that I had pushed to GitHub from a different computer, where their tests ran fine. On my new laptop, I got "No tests were found" no matter how I tried to run them.

What finally did work: I deleted the IDEA-generated test.iml file, because I had noticed there was no such file in a virgin project I had created just to see if I could run tests at all (I could indeed). After I deleted this file in both older projects, tests ran perfectly. No new test.iml was generated.

I don't know how or when those files got generated. Because the git repos are private, I didn't bother to gitignore IDEA's *.*ml files; nevertheless, they weren't in the GitHub repos. Furthermore, they were at the roots of the projects, not in the .idea directory.