After moving some previously working test code to its own

testing-support

module, I'm getting an error:

Unresolved reference: BeforeTest

for

kotlin.test.BeforeTest

during the

:testing-support:compileKotlinJvm

task. I've added

api(kotlin("test"))

to

:testing-support:commonMain

dependencies. The code works for macOS and iOS, but not JVM or Android targets. The IDE doesn't show an error, just during the compile task. Any idea why this doesn't work?

you need to choose a jvm implementation among kotlin-test-junit kotlin-test-junit5 kotlin-test-testng

Ah, that's right, thanks! I tried adding

junit

itself, but not the

kotlin-test

implementation. This must default to something in the

jvmTest

source set somehow, as I forgot it there before moving to its own module. It's working now after adding

api(kotlin("test-junit"))

.

it defaults to junit4 tests but that only works in the test source set, which means your separate module needs to handle it https://kotlinlang.org/docs/gradle-configure-project.html#set-dependencies-on-test-libraries

That makes sense, thanks.