A modern programming language that makes developers happier.

kotlinlang

Hey guys :wave:
Does anyone know if it’s possible to have kotest and junit5 tests coexist? I have a project with kotest setup and I wanted to give junit5 a go in Kotlin, but when I added
```    testImplementation(platform("org.junit:junit-bom:5.7.0"))
    testImplementation("org.junit.jupiter:junit-jupiter")```
tests are not picked up by Gradle. Do Jupiter and Kotest not like one another?

as long as jupiter is on the classpath, you might have to do the include engine configuration that gradle provides

thanks so much for confirming this <@U12AGS8JG> I’ve had a close look at my tests and I missed the fact that `suspend` tests are not run by junit and I have to wrap them in `runBlocking` (which is not ideal…). Thanks anyway! :slightly_smiling_face:

Ah ok. Let me know how you think junit compares to kotest for kotlin tests.

sure, will do! :slightly_smiling_face: Overall I think kotest is a great testing framework, thanks a lot for all the effort writing and maintaining it <@U12AGS8JG> My biggest complaint and the reason why I want to take a look at JUnit is the incredibly slow performance while editing although I do realise that this is probably an issue on the IntelliJ side. I’m in the process of filing a bug and still need to profile CPU usage, but editing a large test suite (over 200 lines of code) is an incredibly annoying experience on a 2020 MacBook Pro 2,3 GHz i7…

And you can use annotation spec which is junit by another name

Oh, I’ve not thought about annotation spec, good call, thanks! Will definitely take a look! And will also check out 1.4.20, I’m still on 1.4.10

I was surprised at how much faster it is - you don't need to upgrade your project, it's the 1.4.20 intellij plugin that is faster.

strange.. I can’t see this update yet in 2019.3 :thinking_face: maybe I need to switch to 2020.3…

junit.gif

I’ve just remembered what I miss in kotest (again: probably IntelliJ’s thing): not being able to run test suites from IDE:

( :arrow_forward: icon disappears as soon as I extend AnnotationSpec)

:man-facepalming: no, I don’t. Oh man, you’ve literally made me a happy Kotlin developer again :smile: I just need to take 1.4.20 for a ride :slightly_smiling_face:

wow, you’re right <@U12AGS8JG> 1.4.20 is unimaginably faster. Who would have thought? :wink: Thanks again for all the insights, I’ll happily stick to Kotest :tada:  :smile:

I was super impressed when I tried the 1.4.20 rc, because I was like, what, how is this so much faster

It was never a kotest thing, it was a problem with too many lambdas / type parameters. So things like arrow would grind to a halt as well.

I’ve only noticed massive slow down with Kotest, as I’ve not used arrow equally heavily :sweat_smile: