mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-11-30 16:39:26 +00:00
52 lines
1.4 KiB
Rust
52 lines
1.4 KiB
Rust
|
// run-rustfix
|
||
|
|
#![allow(unused_imports)]
|
||
|
|
#![warn(clippy::explicit_write)]
|
||
|
|
|
||
|
|
fn stdout() -> String {
|
||
|
|
String::new()
|
||
|
|
}
|
||
|
|
|
||
|
|
fn stderr() -> String {
|
||
|
|
String::new()
|
||
|
|
}
|
||
|
|
|
||
|
|
fn main() {
|
||
|
|
// these should warn
|
||
|
|
{
|
||
|
|
use std::io::Write;
|
||
|
|
print!("test");
|
||
|
|
eprint!("test");
|
||
|
|
println!("test");
|
||
|
|
eprintln!("test");
|
||
|
|
print!("test");
|
||
|
|
eprint!("test");
|
||
|
|
|
||
|
|
// including newlines
|
||
|
|
println!("test\ntest");
|
||
|
|
eprintln!("test\ntest");
|
||
|
|
}
|
||
|
|
// these should not warn, different destination
|
||
|
|
{
|
||
|
|
use std::fmt::Write;
|
||
|
|
let mut s = String::new();
|
||
|
|
write!(s, "test").unwrap();
|
||
|
|
write!(s, "test").unwrap();
|
||
|
|
writeln!(s, "test").unwrap();
|
||
|
|
writeln!(s, "test").unwrap();
|
||
|
|
s.write_fmt(format_args!("test")).unwrap();
|
||
|
|
s.write_fmt(format_args!("test")).unwrap();
|
||
|
|
write!(stdout(), "test").unwrap();
|
||
|
|
write!(stderr(), "test").unwrap();
|
||
|
|
writeln!(stdout(), "test").unwrap();
|
||
|
|
writeln!(stderr(), "test").unwrap();
|
||
|
|
stdout().write_fmt(format_args!("test")).unwrap();
|
||
|
|
stderr().write_fmt(format_args!("test")).unwrap();
|
||
|
|
}
|
||
|
|
// these should not warn, no unwrap
|
||
|
|
{
|
||
|
|
use std::io::Write;
|
||
|
|
std::io::stdout().write_fmt(format_args!("test")).expect("no stdout");
|
||
|
|
std::io::stderr().write_fmt(format_args!("test")).expect("no stderr");
|
||
|
|
}
|
||
|
|
}
|