A modern programming language that makes developers happier.

kotlinlang

```io.kotest:kotest-runner-junit5-jvm```


If you're using `useJUnitPlatform()` in your build, but want JUnit platform to run junit4 tests, you need to ensure you have the junit vintage runner on the classpath. I'll send a link shortly

<https://junit.org/junit5/docs/current/user-guide/#running-tests-build-gradle-engines-configure>

Second code example, and paragraph above talks about running JUnit 4 tests.

Basically, add the junit-vintage-engine as described there, and Junit Platform should run both sets of tests.