90 lines
1.8 KiB
Rust
90 lines
1.8 KiB
Rust
#![feature(slice_internals)]
|
|
|
|
use core::slice::memchr::{memchr, memrchr};
|
|
|
|
// test fallback implementations on all targets
|
|
fn matches_one() {
|
|
assert_eq!(Some(0), memchr(b'a', b"a"));
|
|
}
|
|
|
|
fn matches_begin() {
|
|
assert_eq!(Some(0), memchr(b'a', b"aaaa"));
|
|
}
|
|
|
|
fn matches_end() {
|
|
assert_eq!(Some(4), memchr(b'z', b"aaaaz"));
|
|
}
|
|
|
|
fn matches_nul() {
|
|
assert_eq!(Some(4), memchr(b'\x00', b"aaaa\x00"));
|
|
}
|
|
|
|
fn matches_past_nul() {
|
|
assert_eq!(Some(5), memchr(b'z', b"aaaa\x00z"));
|
|
}
|
|
|
|
fn no_match_empty() {
|
|
assert_eq!(None, memchr(b'a', b""));
|
|
}
|
|
|
|
fn no_match() {
|
|
assert_eq!(None, memchr(b'a', b"xyz"));
|
|
}
|
|
|
|
fn matches_one_reversed() {
|
|
assert_eq!(Some(0), memrchr(b'a', b"a"));
|
|
}
|
|
|
|
fn matches_begin_reversed() {
|
|
assert_eq!(Some(3), memrchr(b'a', b"aaaa"));
|
|
}
|
|
|
|
fn matches_end_reversed() {
|
|
assert_eq!(Some(0), memrchr(b'z', b"zaaaa"));
|
|
}
|
|
|
|
fn matches_nul_reversed() {
|
|
assert_eq!(Some(4), memrchr(b'\x00', b"aaaa\x00"));
|
|
}
|
|
|
|
fn matches_past_nul_reversed() {
|
|
assert_eq!(Some(0), memrchr(b'z', b"z\x00aaaa"));
|
|
}
|
|
|
|
fn no_match_empty_reversed() {
|
|
assert_eq!(None, memrchr(b'a', b""));
|
|
}
|
|
|
|
fn no_match_reversed() {
|
|
assert_eq!(None, memrchr(b'a', b"xyz"));
|
|
}
|
|
|
|
fn each_alignment_reversed() {
|
|
let mut data = [1u8; 64];
|
|
let needle = 2;
|
|
let pos = 40;
|
|
data[pos] = needle;
|
|
for start in 0..16 {
|
|
assert_eq!(Some(pos - start), memrchr(needle, &data[start..]));
|
|
}
|
|
}
|
|
|
|
fn main() {
|
|
matches_one();
|
|
matches_begin();
|
|
matches_end();
|
|
matches_nul();
|
|
matches_past_nul();
|
|
no_match_empty();
|
|
no_match();
|
|
|
|
matches_one_reversed();
|
|
matches_begin_reversed();
|
|
matches_end_reversed();
|
|
matches_nul_reversed();
|
|
matches_past_nul_reversed();
|
|
no_match_empty_reversed();
|
|
no_match_reversed();
|
|
each_alignment_reversed();
|
|
}
|