JUnit 5.8 introduced @Suite classes and a new engine to execute them. Spek is currently incompatible with them because it does not use the UniqueId passed in to TestEngine.discover for the children of the engine descriptor and instead constructs its own:
https://github.com/spekframework/spek/blob/2.x/spek-runner-junit5/src/main/kotlin/org/spekframework/spek2/junit/SpekTestDescriptor.kt#L20
JUnit 5.8 introduced
@Suiteclasses and a new engine to execute them. Spek is currently incompatible with them because it does not use theUniqueIdpassed in toTestEngine.discoverfor the children of the engine descriptor and instead constructs its own:https://github.com/spekframework/spek/blob/2.x/spek-runner-junit5/src/main/kotlin/org/spekframework/spek2/junit/SpekTestDescriptor.kt#L20