is there a Kotlin Multiplatform equivalent for the <https docs gradle org current userguide java testing html sec java test fixtures|Java Test Fixtures> plugin I want to share test helpers between subprojects per target platform so there would be jvmTestFixtures jsTestFixtures etc

is there a Kotlin Multiplatform equivalent for the Java Test Fixtures plugin? I want to share test helpers between subprojects, per target platform (so there would be jvmTestFixtures, jsTestFixtures, etc).

Vampire

03/11/2023, 1:10 PM

Not that I'm aware of, but afair the plugin mainly defines a feature variant and provides a helper method to request that variant's capability. So probably not too hard to replicate.

ephemient

03/11/2023, 1:19 PM

sharing fixtures from multiplatform JVM to pure JVM project works: https://github.com/ephemient/aoc2022/blob/main/kt/build.gradle.kts#L50 https://github.com/ephemient/aoc2022/blob/main/kt/graalvm/build.gradle.kts#L110

sharing multiplatform to multiplatform could probably be done similarly

Adam S

03/11/2023, 1:42 PM

thanks @ephemient, that looks promising

what’s the difference between the

jvmTestRuntimeClasspath

config and the

runtimeDependencyFiles

? Do the dependency files contain the test classes themselves?

val parent = configurations.getByName("jvmTestRuntimeClasspath")
extendsFrom(parent)

jvmTestFixtures(compilations.getByName("test").runtimeDependencyFiles)

ephemient

03/11/2023, 1:52 PM

yes, but that's probably not something you need, I'm just re-exporting the test cases so I can re-run them in another project

(which would normally be a pointless thing to do, why run the same test multiple times; it only makes sense in my example because I'm recompiling it with graalvm)

under normal circumstances you'd more likely want test to depend on testFixtures

Adam S

03/11/2023, 2:01 PM

gotcha, thanks

here’s a first stab

kotlin-mp-testfixtures.gradle.kts.kt

it exposes the test classes like yours did too, just to test to see if it works first

I think it’s working, at least the unit tests are passing, but IntelliJ isn’t happy. It doesn’t recognise that there’s a dependency

ephemient

03/11/2023, 4:12 PM

there's a bunch of IDE issues, https://youtrack.jetbrains.com/issue/IDEA-231870 https://youtrack.jetbrains.com/issue/IDEA-232485 https://youtrack.jetbrains.com/issue/KTIJ-14843 etc.

basically I just ignore the IDE. as long as it builds it's right

vladimirsitnikov

03/11/2023, 5:56 PM

Why not extracting the helpers into its own module?

Adam S

03/11/2023, 6:08 PM

1. I'm updating the Gradle config of an existing code base and I wanted to avoid making too many changes 2. the test-fixtures code needs to be able to access

internal

visibility code

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