# What's the usefulness of Flux.testmode!

**URL:** https://discourse.julialang.org/t/whats-the-usefulness-of-flux-testmode/96871
**Category:** General Usage
**Tags:** flux
**Created:** [March 31, 2023, 3:23am UTC](https://discourse.julialang.org/t/whats-the-usefulness-of-flux-testmode/96871 "2023-03-31T03:23:53Z")
**Posts on this page:** 1
**Showing post:** 2

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### Author: ![ToucheSir](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/touchesir/32/14411_2.png) [@ToucheSir](https://discourse.julialang.org/u/ToucheSir)
#### Post date: [March 31, 2023, 3:56am UTC](https://discourse.julialang.org/t/whats-the-usefulness-of-flux-testmode/96871/2 "2023-03-31T03:56:41Z")

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You’re in luck, [Flux: trainmode!() and testmode!() needed?](https://discourse.julialang.org/t/flux-trainmode-and-testmode-needed/94155) has everything you’ll ever need to know about this and more. Also, make sure you’re on the latest version of the docs. Flux v0.12 is quite old at this point.

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_[View the full topic](https://discourse.julialang.org/t/whats-the-usefulness-of-flux-testmode/96871)._