rust-clippy/tests/ui/bytes_count_to_len.rs

34 lines
846 B
Rust

// run-rustfix
#![warn(clippy::bytes_count_to_len)]
use std::fs::File;
use std::io::Read;
fn main() {
// should fix, because type is String
let _ = String::from("foo").bytes().count();
let s1 = String::from("foo");
let _ = s1.bytes().count();
// should fix, because type is &str
let _ = "foo".bytes().count();
let s2 = "foo";
let _ = s2.bytes().count();
// make sure using count() normally doesn't trigger warning
let vector = [0, 1, 2];
let _ = vector.iter().count();
// The type is slice, so should not fix
let _ = &[1, 2, 3].bytes().count();
let bytes: &[u8] = &[1, 2, 3];
bytes.bytes().count();
// The type is File, so should not fix
let _ = File::open("foobar").unwrap().bytes().count();
let f = File::open("foobar").unwrap();
let _ = f.bytes().count();
}