rust-clippy/tests/ui/manual_is_variant_and.fixed

51 lines
1.3 KiB
Rust

//@aux-build:option_helpers.rs
#![warn(clippy::manual_is_variant_and)]
#[macro_use]
extern crate option_helpers;
#[rustfmt::skip]
fn option_methods() {
let opt = Some(1);
// Check for `option.map(_).unwrap_or_default()` use.
// Single line case.
let _ = opt.is_some_and(|x| x > 1);
// Multi-line cases.
let _ = opt.is_some_and(|x| {
x > 1
});
let _ = opt.is_some_and(|x| x > 1);
let _ = opt
.is_some_and(|x| x > 1);
// won't fix because the return type of the closure is not `bool`
let _ = opt.map(|x| x + 1).unwrap_or_default();
let opt2 = Some('a');
let _ = opt2.is_some_and(char::is_alphanumeric); // should lint
let _ = opt_map!(opt2, |x| x == 'a').unwrap_or_default(); // should not lint
}
#[rustfmt::skip]
fn result_methods() {
let res: Result<i32, ()> = Ok(1);
// multi line cases
let _ = res.is_ok_and(|x| {
x > 1
});
let _ = res.is_ok_and(|x| x > 1);
// won't fix because the return type of the closure is not `bool`
let _ = res.map(|x| x + 1).unwrap_or_default();
let res2: Result<char, ()> = Ok('a');
let _ = res2.is_ok_and(char::is_alphanumeric); // should lint
let _ = opt_map!(res2, |x| x == 'a').unwrap_or_default(); // should not lint
}
fn main() {
option_methods();
result_methods();
}