rust-clippy/tests/ui/unnecessary_to_owned_on_split.rs

38 lines
1.2 KiB
Rust

#![allow(clippy::single_char_pattern)]
struct Issue12068;
impl AsRef<str> for Issue12068 {
fn as_ref(&self) -> &str {
""
}
}
#[allow(clippy::to_string_trait_impl)]
impl ToString for Issue12068 {
fn to_string(&self) -> String {
String::new()
}
}
fn main() {
let _ = "a".to_string().split('a').next().unwrap();
//~^ ERROR: unnecessary use of `to_string`
let _ = "a".to_string().split("a").next().unwrap();
//~^ ERROR: unnecessary use of `to_string`
let _ = "a".to_owned().split('a').next().unwrap();
//~^ ERROR: unnecessary use of `to_owned`
let _ = "a".to_owned().split("a").next().unwrap();
//~^ ERROR: unnecessary use of `to_owned`
let _ = Issue12068.to_string().split('a').next().unwrap();
//~^ ERROR: unnecessary use of `to_string`
let _ = [1].to_vec().split(|x| *x == 2).next().unwrap();
//~^ ERROR: unnecessary use of `to_vec`
let _ = [1].to_vec().split(|x| *x == 2).next().unwrap();
//~^ ERROR: unnecessary use of `to_vec`
let _ = [1].to_owned().split(|x| *x == 2).next().unwrap();
//~^ ERROR: unnecessary use of `to_owned`
let _ = [1].to_owned().split(|x| *x == 2).next().unwrap();
//~^ ERROR: unnecessary use of `to_owned`
}