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As far as I can tell, Kotest requires JUnit 5:

https://github.com/kotest/kotest/issues/1104

It also requires Gradle 6:

https://github.com/kotest/kotest/issues/1301

I presume it's possible to get this all set up and working, but isn't it true that JUnit 5 and Gradle 6 are not really supported for Android development? I'm concerned that, even I get this all working now, I may have problems down the line.

Tom B
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  • In the second link, it is mentioned that Kotest 4.0 is out, what else have you tried? – Jared Burrows Mar 27 '20 at 06:13
  • I don't quite see what the version number of Kotest has to do with my question. I'm asking whether I can rely on JUnit 5 and Gradle 6 working for Android development, because as far as I know neither is officially supported. – Tom B Mar 27 '20 at 23:02
  • Gradle 6 is fine, you can use Junit 4.13. – Jared Burrows Mar 28 '20 at 05:31
  • How do you use JUnit 4 with Kotest? As far as I can see, this is possible only for older versions that existed when the project was called Kotlintest. – Tom B Mar 29 '20 at 06:31

1 Answers1

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Kotest does work on Android Studio.

JVM tests

To setup the JUnit 5 runner for your unit tests (plain JVM) you can follow the instructions at https://kotest.io/quick_start/.

Of course If you have an already started project with JVM JUnit4 tests you will have to make additional steps to configure both the runners for the JUnit4 and for the new JUnit5/Kotest tests, but it is outside of the scope of this answer.

Android Robolectric tests

You can find the instructions on how to set it up here. Given Robolectric ones are plain JVM tests and not instrumented ones, you can use the JUnit5 runner and they will run just fine.

Android instrumented tests

Apparently Kotest has a JUnit4 runner project too, but no instructions yet on how to set it up with Android.

Alex Facciorusso
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