Using Kotest 5.8.1, the following test

class MyTestClass {
    @Test
    fun myTestMethod() = runTest {
        eventually {
            error("Whoops!")
        }
    }
}

(running in JUnit 4 - Android project)

immediately fails with

java.lang.AssertionError: Block failed after 0ms; attempted 0 time(s)

The test block is never run, and the output is really just the above, giving no further details about what went wrong.

I've dug into this and believe the issue is that the duration of the default EventuallyConfig is set to INFINITE:

While I initially wanted to raise this as a documentation issue only, I do wonder whether a duration of INFINITE should be handled specifically to mean "retry forever". Currently it basically results in "attempt not even once". To clarify: While the default value could simply be changed, I'm instead suggesting that EventuallyControl should be changed to allow retrying forever.