Why is `Test(Coroutine)Scope` suddenly `sealed`? That’s breaking my entire test suite :open_mouth: ...

# coroutines

[Marc Knaup]

Why is Test(Coroutine)Scope suddenly sealed?
That’s breaking my entire test suite 😮

Comment in code reads

Since 1.6.0, ERROR in 1.7.0 and removed as experimental in 1.8.0

It’s already an error in 1.6!

I use sub-interface and delegation to add additional functionality.
Alternatively the extension functions should be moved to a new parent interface of TestScope that’s not sealed and can be implemented by other interfaces.

Created: https://github.com/Kotlin/kotlinx.coroutines/issues/3070