How to properly write tests for kernel functions

[Maxim Pugachev]

Hi all,

I'm trying to understand is there any uniform way to write tests? For
example, lib/ folder has a bunch of tests, but all of them use various
technics:

- pr_warn/pr_err (i.e. printk) or WARN for assertions
- just tens of functions that check something, or unified macros
- no naming convention for test cases

So, I'm wondering, whether there is an example or guidelines that is
worth to follow.

Thanks!