benchmarks for Chars::advance_by

library/core/benches/lib.rs

@@ -5,6 +5,7 @@
 #![feature(trusted_random_access)]
 #![feature(iter_array_chunks)]
 #![feature(iter_next_chunk)]
+#![feature(iter_advance_by)]
 
 extern crate test;
 

library/core/benches/str.rs

@@ -3,6 +3,7 @@
 
 mod char_count;
 mod corpora;
+mod iter;
 
 #[bench]
 fn str_validate_emoji(b: &mut Bencher) {

library/core/benches/str/iter.rs

@@ -0,0 +1,17 @@
+use super::corpora;
+use test::{black_box, Bencher};
+
+#[bench]
+fn chars_advance_by_1000(b: &mut Bencher) {
+    b.iter(|| black_box(corpora::ru::LARGE).chars().advance_by(1000));
+}
+
+#[bench]
+fn chars_advance_by_0010(b: &mut Bencher) {
+    b.iter(|| black_box(corpora::ru::LARGE).chars().advance_by(10));
+}
+
+#[bench]
+fn chars_advance_by_0001(b: &mut Bencher) {
+    b.iter(|| black_box(corpora::ru::LARGE).chars().advance_by(1));
+}