Hey guys, is there any way to get the current Kotlin target from common code? I am writing a common ...

# multiplatform

[Joffrey]

Hey guys, is there any way to get the current Kotlin target from common code? I am writing a common test but the feature under test is not supported in Kotlin/Native, so I would like to just ignore the test on native. I could extract the test code into a common function and declare a test in every platform but the one to exclude, but that sounds inefficient

[russhwolf]

You can always define your own expect val platform and check against that. Or if you want a slightly higher abstraction, expect val hasFeature.

[Joffrey]

Yes that's the other option I had considered, but I was trying my luck for a built-in way 😄 Thanks anyway

[andylamax]

You can also have an expect annotation class that is only a type alias to the supported platforms.

Then marking your tests with this annotation would effectively only work on the supported platforms

[ephemient]

declare it with @OptionalExpectation to omit the actual on the platforms where you don't want it

[ephemient]

one minor annoyance is that you can't typealias another typealias, so

// commonTest
@OptionalExpectation
expect annotation class JvmIgnore
// jvmTest
actual typealias JvmIgnore = kotlin.test.Ignore

doesn't work. but for nativeTest it should be fine

[Joffrey]

Sorry for the delay, thanks a lot to both of you for the ideas. I got it to work by using the ignore annotation approach suggested by @ephemient, which indeed does work on native:

// commonTest
@OptIn(ExperimentalMultiplatform::class)
@OptionalExpectation
expect annotation class IgnoreOnNative()

// iosTest
actual typealias IgnoreOnNative = kotlin.test.Ignore