// tests/tests.rs #[cfg(test)] mod tests { use libbpf_sys::*; unsafe extern "C" fn print_fn( _level: libbpf_print_level, _arg1: *const std::os::raw::c_char, _ap: *mut __va_list_tag, ) -> std::os::raw::c_int { 0 } #[test] fn test() { unsafe { // just tests that we can call into the library assert!(libbpf_set_print(Some(print_fn as _)).is_some()); } } }