rust/tests/ui/suggestions/copied-and-cloned.rs

46 lines
1.3 KiB
Rust

// run-rustfix
fn expect<T>(_: T) {}
fn main() {
let x = Some(&());
expect::<Option<()>>(x);
//~^ ERROR mismatched types
//~| HELP use `Option::copied` to copy the value inside the `Option`
let x = Ok(&());
expect::<Result<(), ()>>(x);
//~^ ERROR mismatched types
//~| HELP use `Result::copied` to copy the value inside the `Result`
let s = String::new();
let x = Some(&s);
expect::<Option<String>>(x);
//~^ ERROR mismatched types
//~| HELP use `Option::cloned` to clone the value inside the `Option`
let x = Ok(&s);
expect::<Result<String, ()>>(x);
//~^ ERROR mismatched types
//~| HELP use `Result::cloned` to clone the value inside the `Result`
let s = String::new();
let x = Some(s.clone());
let y = Some(&s);
println!("{}", x == y);
//~^ ERROR mismatched types
//~| HELP use `Option::as_ref` to convert `Option<String>` to `Option<&String>`
let mut s = ();
let x = Some(s);
let y = Some(&mut s);
println!("{}", x == y);
//~^ ERROR mismatched types
//~| HELP use `Option::copied` to copy the value inside the `Option`
let mut s = String::new();
let x = Some(s.clone());
let y = Some(&mut s);
println!("{}", x == y);
//~^ ERROR mismatched types
//~| HELP use `Option::cloned` to clone the value inside the `Option`
}