is there some work planned around <https://youtrac...

# react

[Piotr Krzemiński]

is there some work planned around [KT-49610] KJS: Allow unit-testing React components ? I pretty much like using Kotlin/JS + React, but no ability to test the components is a major disadvantage when trying to convince my colleagues to actually use it wider in the company

[Piotr Krzemiński]

CC @Ilya Kalibrov [JB] since I see you’re assigned there

[Rob Murdock]

I can’t comment on official support, but having been testing kotlin react components over the last few years I can add my 2 cents if you like on getting the ball rolling with the current available tools

[Piotr Krzemiński]

yes, it would be really cool! could you prepare a trivial example, like unit-testing a single-property component?

[Rob Murdock]

I’ll see if I can find one in an open-source project :) at this time, it involves a kotlin wrapper around common testing-library functions, and taking advantage of returning promises from kotlin tests

[Rob Murdock]

Here’s a pretty simple one (arguably too simple, as it doesn’t actually require awaiting any promises!) https://github.com/robertfmurdock/Coupling/blob/master/client/src/test/kotlin/com/zegreatrob/coupling/client/stats/PlayerHeatmapBuilderTest.kt

[Rob Murdock]

(also doesn’t use the testing library query functions… which it should. Haha they’re in that codebase somewhere, I should refactor this!)

[Piotr Krzemiński]

thanks! I see mainly this wrapper over `@testing-library/react`: https://github.com/robertfmurdock/Coupling/blob/55d6925d752fee1bd4af2ce8d1dc32b8ff[…]ob/coupling/testreact/external/testinglibrary/react/External.kt

BTW, I like the structure (asyncSetup, exercise, verify)! interesting project: https://github.com/robertfmurdock/testmints

[Rob Murdock]

thank you 🙂

[Piotr Krzemiński]

reminds me of https://spockframework.org/

anyway, back to React testing, it would be super-cool if you could gather more advanced examples, and even if you don’t, I’m going to do it as part of my project within the next 1-2 months

[Rob Murdock]

there are some littered throughout that project - i remember i was going through the process of converting enzyme tests to react testing library tests but i’m not sure if i finished or not.