Hi I'm migrating from kotlintest to kotest but I found a strange issue: When I run the tests from the

IDE

every test is successful but when I try to run the test with

gradlew

I'm getting this error in an assertion:

java.lang.NoClassDefFoundError: arrow/core/NonFatal

the assertion is this

shouldBeLeft()

Someone can help me?

Hi @HarryPulvirenti please make sure you have

compile group: 'io.kotest', name: 'kotest-assertions-arrow-jvm', version: '4.0.3'

dependency in build file.

I'm using this dependencies

const val koTestRunner = "io.kotest:kotest-runner-junit5-jvm:${Versions.koTest}"
const val koTestAssertionsCore = "io.kotest:kotest-assertions-core-jvm:${Versions.koTest}"
const val koTestProperty = "io.kotest:kotest-property-jvm:${Versions.koTest}"
const val koTestArrow = "io.kotest:kotest-assertions-arrow-jvm:${Versions.koTest}"

@HarryPulvirenti could you please share more details like kotest version, kotlin version, gradle version, and java version As i have checked this for me its working fine for me. https://github.com/ashishkujoy/kotest-playground/blob/master/src/test/kotlin/org/playground/ArrowTest.kt

That arrow version needs to be 0.10.4

Oh ok thanks

All stable Arrow modules are starting from 0.10.x 🙂

there was an issue between 0.10.4 and 0.10.5, some dependency change fyi