Disallow calling `configure` inside of a test

[Janpot]

Name for new rule

prefer-top-level-configure

Description of the new rule

Fail when configure is not called top-level

Testing Library feature

global configuration utility

Testing Library framework(s)

@testing-library/dom, @testing-library/react, perhaps others

What category of rule is this?

Warns about a potential error

Optional: other category of rule

No response

Code examples

import { configure } from '@testing-library/react'
test('some test', () => {
  // FAIL:
  configure({ reactStrictMode: true })

  // ...
})

import { configure } from '@testing-library/react'

// OK:
configure({ reactStrictMode: true })

test('some test', () => {
  // ...
})

Anything else?

No response

Do you want to submit a pull request to make the new rule?

Yes

[Belco90]

Hi @Janpot. I'm checking the docs for the configure util and I don't see any reference in React or other Testing Library frameworks, so I believe this would only apply to DOM.

[Janpot]

https://testing-library.com/docs/react-testing-library/api#configure

can't really speak for other libs, but searching on the docs for "configure" suggests other libs have this as well.

[Belco90]

@Janpot Good catch! I couldn't find anything under the Setup section.