rust-clippy/tests/ui/result_map_or_into_option.fixed

24 lines
831 B
Rust

#![warn(clippy::result_map_or_into_option)]
fn main() {
let opt: Result<u32, &str> = Ok(1);
let _ = opt.ok();
//~^ ERROR: called `map_or(None, Some)` on a `Result` value
let _ = opt.ok();
//~^ ERROR: called `map_or_else(|_| None, Some)` on a `Result` value
#[rustfmt::skip]
let _ = opt.ok();
//~^ ERROR: called `map_or_else(|_| None, Some)` on a `Result` value
let rewrap = |s: u32| -> Option<u32> { Some(s) };
// A non-Some `f` arg should not emit the lint
let opt: Result<u32, &str> = Ok(1);
let _ = opt.map_or(None, rewrap);
// A non-Some `f` closure where the argument is not used as the
// return should not emit the lint
let opt: Result<u32, &str> = Ok(1);
_ = opt.map_or(None, |_x| Some(1));
let _ = opt.map_or_else(|a| a.parse::<u32>().ok(), Some);
}