Android - Kotlin - JUnit 5：如何测试私有方法？

Question

General software organization question: I have a Kotlin class file (under src/) with some 10 methods, only 1 of which should be visible outside the class (the rest should be private). I also have a dozen JUnit test methods for testing the abovementioned methods, and I put all those in a different class file (under src/test/). But the test methods cannot see the methods they're supposed to test, so I had to remove the private modifiers from the source code:(
What's a man to do? JUnit 5, Kotlin for Android, on IntelliJ, if that matters. Thank you

Answer 1

What's a man to do?

Check this question and answer .

Either a) test the private details indirectly by testing the public interface (which goes through the private methods) or b) Use @VisibleForTesting annotation to make a private function public for testing but clearly flagged as something that should not be used otherwise.