Hi guys! :slightly_smiling_face: We recently updat...

# mockk

[Jérémy CROS]

Hi guys! 🙂
We recently updated mockk from 1.13.2 to 1.13.5 and we started having issues with some of our espresso tests (we have a bunch of mocked classes injected in those with Koin):
java.lang.IncompatibleClassChangeError
(zero problems in our ~2000 unit tests though)
We could fix some of those by replacing the type of the mock with the concrete implementation eg val mockedClass = mockk<Interface>() by val mockedClass = mockk<Implementation>()
But that doesn’t work for libraries that generate code from interfaces eg Retrofit val mockBackendApi = mockk<BackendApi> and we were stuck with the IncompatibleClassChangeError for those
I know it is a bit vague so let me know if I can provide additional details.
For now, we reverted back to 1.13.2, the tests are running like they used to but I’m curious if this is a mockk thing or if it’s just highlighting a problem that was already in our codebase
Thanks! 🙂

[Jonas]

maybe this error?
https://kotlinlang.slack.com/archives/C9EJFT6DB/p1679676082899189

[Jérémy CROS]

Exactly the same error! Damn, I did search the github for issues before posting, guess I was a bit too quick 🤦 😅
Thanks 🙏