I don't think it is a good idea to test that - I g...

# test

[oshai]

I don't think it is a good idea to test that - I generally prefer pure functions and testing the return value. but in case you really want, one way to do it is by using an appender: https://github.com/MicroUtils/kotlin-logging/blob/master/kotlin-logging-jvm/src/test/kotlin/mu/LoggingTest.kt