AI model for unit test code generation

I am undertaking this course on Generative AI for LLM and I am in the last week of this course. One of the projects that I was thinking of undertaking on my own is to generate unit tests for a given C function. Can someone advise me on which is the best model to use for this project? Thanks for any inputs.

You posted this in the General Discussions (AI in the Real World) category but, as you mentioned, it belongs to the Generative AI with LLM. Please move it to the correct course category as described here to get instant reply from mentors.