mirror of https://github.com/tailix/libclayer.git
68 lines
1.7 KiB
Rust
68 lines
1.7 KiB
Rust
use libc::{c_char, c_int};
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pub type AssertCB = unsafe extern "C" fn(*const c_char, c_int, *const c_char);
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#[link(name = "kernaux")]
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extern "C" {
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#[link_name = "kernaux_assert_do"]
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pub fn assert_do(file: *const c_char, line: c_int, msg: *const c_char);
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#[link_name = "kernaux_assert_cb"]
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pub static mut assert_cb: Option<AssertCB>;
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use std::ffi::{CStr, CString};
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use std::ptr::null;
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static mut LAST_FILE: *const c_char = null();
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static mut LAST_LINE: c_int = 0;
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static mut LAST_MSG: *const c_char = null();
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unsafe extern "C" fn some_assert_cb(
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file: *const c_char,
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line: c_int,
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msg: *const c_char,
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) {
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LAST_FILE = file;
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LAST_LINE = line;
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LAST_MSG = msg;
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}
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#[test]
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fn default() {
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unsafe {
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assert_cb = None;
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assert!(assert_cb.is_none());
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assert_cb = Some(some_assert_cb);
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match assert_cb {
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None => panic!(),
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Some(actual_assert_cb) => {
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assert!(actual_assert_cb == some_assert_cb)
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}
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}
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let file_cstr = CString::new("foo.rs").unwrap();
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let msg_cstr = CString::new("bar").unwrap();
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assert_do(
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file_cstr.as_ptr() as *const c_char,
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123,
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msg_cstr.as_ptr() as *const c_char,
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);
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let file = CStr::from_ptr(LAST_FILE).to_str().unwrap();
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let line = LAST_LINE;
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let msg = CStr::from_ptr(LAST_MSG).to_str().unwrap();
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assert_eq!(file, "foo.rs");
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assert_eq!(line, 123);
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assert_eq!(msg, "bar");
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}
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}
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}
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