Construct for repeating tests

[ikonst]

🚀 Feature Proposal

An easy way to modify a test to run multiple times until it fails.

Currently possible to change

test

to something like

test.each([...Array(100).keys()])

but it's cumbersome, does not concisely capture the intention, and doesn't stop on failure.

Surrounding test code in a for-loop is also suboptimal since it doesn't execute cleanup code between runs.

Motivation

When debugging a flaky test, it's useful to run it repeatedly until it fails. It would be helpful to be able, with a small code change, to cause a test to run multiple times.

Example

No response

Pitch

Honestly looking for guidance here as to whether something like this belongs in core Jest.

[rickvian]

yes, i would love to have this too!

the drawback of using .each is when you have snapshot, it actually will generate each its own snapshot, and not comparing against each run, if the test is flaky, we would not know

the current workaround is i wrap with simple forloop on the test i want to investigate the flakiness on...

but i hope such function like: it.loop(30)(...) exist....

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This issue was closed because it has been stalled for 30 days with no activity. Please open a new issue if the issue is still relevant, linking to this one.

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