// find the byte before the point the body loop stopped
text[..offset].iter().rposition(|elt| *elt == x)
}
-
-// test fallback implementations on all platforms
-#[test]
-fn matches_one() {
- assert_eq!(Some(0), memchr(b'a', b"a"));
-}
-
-#[test]
-fn matches_begin() {
- assert_eq!(Some(0), memchr(b'a', b"aaaa"));
-}
-
-#[test]
-fn matches_end() {
- assert_eq!(Some(4), memchr(b'z', b"aaaaz"));
-}
-
-#[test]
-fn matches_nul() {
- assert_eq!(Some(4), memchr(b'\x00', b"aaaa\x00"));
-}
-
-#[test]
-fn matches_past_nul() {
- assert_eq!(Some(5), memchr(b'z', b"aaaa\x00z"));
-}
-
-#[test]
-fn no_match_empty() {
- assert_eq!(None, memchr(b'a', b""));
-}
-
-#[test]
-fn no_match() {
- assert_eq!(None, memchr(b'a', b"xyz"));
-}
-
-#[test]
-fn matches_one_reversed() {
- assert_eq!(Some(0), memrchr(b'a', b"a"));
-}
-
-#[test]
-fn matches_begin_reversed() {
- assert_eq!(Some(3), memrchr(b'a', b"aaaa"));
-}
-
-#[test]
-fn matches_end_reversed() {
- assert_eq!(Some(0), memrchr(b'z', b"zaaaa"));
-}
-
-#[test]
-fn matches_nul_reversed() {
- assert_eq!(Some(4), memrchr(b'\x00', b"aaaa\x00"));
-}
-
-#[test]
-fn matches_past_nul_reversed() {
- assert_eq!(Some(0), memrchr(b'z', b"z\x00aaaa"));
-}
-
-#[test]
-fn no_match_empty_reversed() {
- assert_eq!(None, memrchr(b'a', b""));
-}
-
-#[test]
-fn no_match_reversed() {
- assert_eq!(None, memrchr(b'a', b"xyz"));
-}
-
-#[test]
-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..]));
- }
-}
v.sort_unstable();
assert!(v == [0xDEADBEEF]);
}
+
+pub mod memchr {
+ use core::slice::memchr::{memchr, memrchr};
+
+ // test fallback implementations on all platforms
+ #[test]
+ fn matches_one() {
+ assert_eq!(Some(0), memchr(b'a', b"a"));
+ }
+
+ #[test]
+ fn matches_begin() {
+ assert_eq!(Some(0), memchr(b'a', b"aaaa"));
+ }
+
+ #[test]
+ fn matches_end() {
+ assert_eq!(Some(4), memchr(b'z', b"aaaaz"));
+ }
+
+ #[test]
+ fn matches_nul() {
+ assert_eq!(Some(4), memchr(b'\x00', b"aaaa\x00"));
+ }
+
+ #[test]
+ fn matches_past_nul() {
+ assert_eq!(Some(5), memchr(b'z', b"aaaa\x00z"));
+ }
+
+ #[test]
+ fn no_match_empty() {
+ assert_eq!(None, memchr(b'a', b""));
+ }
+
+ #[test]
+ fn no_match() {
+ assert_eq!(None, memchr(b'a', b"xyz"));
+ }
+
+ #[test]
+ fn matches_one_reversed() {
+ assert_eq!(Some(0), memrchr(b'a', b"a"));
+ }
+
+ #[test]
+ fn matches_begin_reversed() {
+ assert_eq!(Some(3), memrchr(b'a', b"aaaa"));
+ }
+
+ #[test]
+ fn matches_end_reversed() {
+ assert_eq!(Some(0), memrchr(b'z', b"zaaaa"));
+ }
+
+ #[test]
+ fn matches_nul_reversed() {
+ assert_eq!(Some(4), memrchr(b'\x00', b"aaaa\x00"));
+ }
+
+ #[test]
+ fn matches_past_nul_reversed() {
+ assert_eq!(Some(0), memrchr(b'z', b"z\x00aaaa"));
+ }
+
+ #[test]
+ fn no_match_empty_reversed() {
+ assert_eq!(None, memrchr(b'a', b""));
+ }
+
+ #[test]
+ fn no_match_reversed() {
+ assert_eq!(None, memrchr(b'a', b"xyz"));
+ }
+
+ #[test]
+ 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..]));
+ }
+ }
+}