this post was submitted on 30 Aug 2023
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How much flakiness do you tolerate in end to end tests? (programming.dev)
submitted 1 year ago* (last edited 1 year ago) by kersplort@programming.dev to c/experienced_devs@programming.dev
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End to end and smoke tests give a really valuable angle on what the app is doing and can warn you about failures before they happen. However, because they're working with a live app and a live database over a live network, they can introduce a lot of flakiness. Beyond just changes to the app, different data in the environment or other issues can cause a smoke test failure.

How do you handle the inherent flakiness of testing against a live app?

When do you run smokes? On every phoenix branch? Pre-prod? Prod only?

Who fixes the issues that the smokes find?

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[–] agressivelyPassive@feddit.de 4 points 1 year ago (1 children)

Shouldn't you find out, why the smoke tests keep failing? It's not a good sign, if you can't even guarantee stability in a controlled environment.

[–] kersplort@programming.dev 2 points 1 year ago (1 children)

It's not a fully controlled environment, that is the point of smokes.

[–] agressivelyPassive@feddit.de 1 points 1 year ago (1 children)

How do you not fully control the environment your PRs are tested in?

[–] kersplort@programming.dev 1 points 1 year ago

dependencies.