Lint for setting advanceTimers with user-event when using jest.useFakeTimers

[backwardok]

Name for new rule

advance-timers-with-fake-timers

Description of the new rule

Enforce using the advanceTimers option for user-event when using jest's useFakeTimers in order to prevent testing timeouts

Testing Library feature

user-event's advanceTimers option when using fake timers

Testing Library framework(s)

user-event (across any Testing Library framework that can use it)

What category of rule is this?

Warns about a potential error

Optional: other category of rule

No response

Code examples

Using fake timers within a test directly:

jest.useFakeTimers();
const user = userEvent.setup(); // Warn - advanceTimers not set

beforeEach(() => {
  jest.useFakeTimers()
});

test('some behavior with user action', async () => {
  const user = userEvent.setup(); // Warn - advanceTimers not set
  // Test behavior
})

Anything else?

No response

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

No