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#getting-started
Title
# getting-started
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Blake Anderson

02/25/2023, 3:54 AM
Is there a standard Kotlin-only solutions for parameterized tests? I normally use JUnit, however since adding Kotlin/JS as a target I'm looking for alternatives that work outside of the JVM. It doesn't seem like kotlin.test has any support for this, which is what I currently use for the few JS-supported tests I have.
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ephemient

02/25/2023, 4:02 AM
if you're willing to switch test runners, I believe #kotest has data-driven tests and supports multiplatform. haven't used it myself though
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CLOVIS

02/25/2023, 9:30 AM
If you're trying it right now, note that Kotest currently has an incompatibility issue with the Kotlin plugin, meaning tests results are not reported for JS. Hopefully it gets fixed soon.
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Adam S

02/25/2023, 10:28 AM
The feature request for parameterized tests in kotlin.test is here: https://youtrack.jetbrains.com/issue/KT-46899
We spoke about it in this thread: https://kotlinlang.slack.com/archives/C3PQML5NU/p1676110664778949 Did you end up using Kotest @CLOVIS, or did you use your custom expect/actual wrapper for JUnit and the kotlin.test workaround?
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CLOVIS

02/25/2023, 10:32 AM
I'm currently using the expect-actual wrapper for now. I'm planning to extract it into a proper library in the near future, with proper `before`/`after` features based on coroutines (and maybe test parameterization, we'll see)
I'm still using Kotest for assertions.
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Adam S

02/25/2023, 10:34 AM
that would be very cool - let me know if I can help 👍
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CLOVIS

02/25/2023, 10:37 AM
The main idea is that `before`can be emulated with coroutines by storing the lambda and executing it lazily when a test starts using that test's coroutine context, at that point it can register its own cleanup. I wrote down a small example how it could look like here, don't hesitate to subscribe to the issue and give ideas of what it could become 🙂
It's inspired by discussing the wrapper solution with a colleague who's very into JUnit, I want an idiomatic Kotlin way to represent nested test suites and test preconditions
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Blake Anderson

02/27/2023, 10:18 AM
Thanks for the additional context here, will try to keep an eye on it. I don't think I have the resources to try and make anything too custom for my stuff, but hopefully a stable baseline comes together sooner rather than later. If it becomes a major need may try out your approach @Adam S, kudos for giving that a go.
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