Hey friends! This is a silly question, so apologies in advance. :sweat_smile: I have some tests in `...

# multiplatform

[Paulo Cereda]

Hey friends! This is a silly question, so apologies in advance. 😅 I have some tests in commonTest. Recently, I noticed that I inadvertedly used JVM-specific code in one of those tests (namely, File and readText() . Although the tests run without any issues, I think I should move them to jvmTest instead because it uses non-common code. Is this the correct way to go, or should I keep this scenario as-is? Thanks!

[jw]

That entirely depends on what targets you want to support. If it's only the JVM and Android, for example, then File is common to them. However, if you have any native, js, and/or wasm targets then that will fail compilation when you try to compile tests for those targets.

[Paulo Cereda]

Thanks so much, @jw! That makes sense. Currently we are only targeting JVM, that's why it's working. I will make a note for my future self in case we expand the coverage to other targets. 😉

[darkmoon_uk]

@Paulo Cereda FYI in the early days of KMP, commonMain was able only to access a fixed API that was the intersection of all supported targets.

In recent Kotlin versions though, commonMain now sees a dynamically computed API - the intersection of all enabled targets.
This makes commonMain more intelligent and flexible - allowing you to use File being a nice example.

[jw]

Recent being like... the last 7 years though. It's been this way for the overwhelming majority of its existence.

[jw]

Probably even longer, actually. I think my first real KMP experiment was late 2016 and it already behaved the the way it does today.

[darkmoon_uk]

I'm old

[Michael Paus]

Another possibility would be to just replace File and readText() by their corresponding counterparts from a multi-platform IO library like Okio or kotlinx-io. Then you’d be ready for the future. There’s no point in using Java dependencies if they can be easily avoided. Of course that’s not always the case.

[Paulo Cereda]

Thanks for the suggestions, friends! gratitude thank you