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Make maxLoops for fake timers configurable

See original GitHub issue

🚀 Feature Proposal

I’d like to be able to configure maxLoops (see https://github.com/facebook/jest/blob/master/packages/jest-fake-timers/src/jestFakeTimers.ts#L88) myself when using jest.useFakeTimers()

Motivation

I am writing a timer app, which actually may count to more than 100.000ms and it would still make sense. Unable to test this though to this limitation.

Pitch

The line already expects an argument which seems to be able to come from somewhere, but the API isn’t making this really publically accessible. I don’t see a reason why this should not be an optional param in jest.useFakeTimers().

Issue Analytics

State:
Created 4 years ago
Comments:7 (2 by maintainers)

Top GitHub Comments

1reaction

mxmzbcommented, Apr 2, 2019

As a current workaround, it is possible to stack jest.advanceTimersByTime(), e.g.

jest.advanceTimersByTime(100000);
jest.advanceTimersByTime(100000);

Also, weirdly enough, the number in the code (https://github.com/facebook/jest/blob/master/packages/jest-fake-timers/src/jestFakeTimers.ts#L88) says 100000 but you actually hit the limit at 1000000.

0reactions

github-actions[bot]commented, May 6, 2022

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