unit testing Android studio JnI

I am a newbie of some sorts, so please bear with me for my kind of question. I have an android studio project with a JNI part where I wrote a C programm. I want to ask how I can go about testing the C programm, which testing frame work will be most suitable, plus these C programme does not have a main() method. Several frameworks I found do not have clear documentation especially for a newbie. I will be glad you just point me in the right direction. Thanks