Jest only run tests that end in .test.js inside "__tests__" folder

Answer: it had nothing to do with the regex but with the position of the jest.config.js file, changing rootDirin the config fixed the issue

I have a working regex in regex101.com but I can make it work in Jest

__tests__\/.*test.[jt]sx?$

result given (regex101):

__tests__/__config/jest.config.js -> no
__tests__/app.test.js -> yes
__tests__/app.test.ts -> yes
__tests__/app.test.tsx -> yes
__tests__/api/app.test.js -> yes
__tests__/api/app.test.not -> no
__tests__/api/api2/api3/app.test.js -> yes
toto.test.js -> no

which is exactly what I want, but when I update the jest.config.js

Jest config:

module.exports = {
  testRegex: ["__tests__/.*test.[jt]sx?$"],
};

it doesn't find anything.

What I'm looking to do: I want to store everything related to unit testing inside the __tests__ folder, including the jest.config.js and other stuff that does not has to be run by Jest.

In package.json run the config inside the __tests__ folder

...
"test": "jest --config ./__tests__/__config/jest.config.js"
...

So it gives me something like:

__tests__/
    __config/
        jest.config.js -> do not run
        dabatase.js -> do not run
    user/
        user.test.js -> run this
        user.mock.js -> do not run 

So basically only the things that end in .test.js/ts that are inside the __tests__ folder

Here is a small repo with the current (non functional) config: Github Repo

Thanks