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kotlinlang

In addition to kotest-runner-junit5 you will need the assertion module as well, please have look at
<https://github.com/kotest/kotest/blob/master/README.md>

Have you considered including that as a transitive dep to the runner?

Previously assertions module comes along with the runner. In order to allow users  to use runner and assertions module independent of each other we have separated them. Making it  a transitive dependency will bring assertions along with runner which user may not want.