rust-clippy/tests/ui/result_map_unit_fn_fixable.rs
2019-11-22 13:47:33 +01:00

80 lines
1.8 KiB
Rust

// run-rustfix
#![warn(clippy::result_map_unit_fn)]
#![allow(unused)]
fn do_nothing<T>(_: T) {}
fn diverge<T>(_: T) -> ! {
panic!()
}
fn plus_one(value: usize) -> usize {
value + 1
}
struct HasResult {
field: Result<usize, usize>,
}
impl HasResult {
fn do_result_nothing(self: &Self, value: usize) {}
fn do_result_plus_one(self: &Self, value: usize) -> usize {
value + 1
}
}
#[rustfmt::skip]
fn result_map_unit_fn() {
let x = HasResult { field: Ok(10) };
x.field.map(plus_one);
let _: Result<(), usize> = x.field.map(do_nothing);
x.field.map(do_nothing);
x.field.map(do_nothing);
x.field.map(diverge);
let captured = 10;
if let Ok(value) = x.field { do_nothing(value + captured) };
let _: Result<(), usize> = x.field.map(|value| do_nothing(value + captured));
x.field.map(|value| x.do_result_nothing(value + captured));
x.field.map(|value| { x.do_result_plus_one(value + captured); });
x.field.map(|value| do_nothing(value + captured));
x.field.map(|value| { do_nothing(value + captured) });
x.field.map(|value| { do_nothing(value + captured); });
x.field.map(|value| { { do_nothing(value + captured); } });
x.field.map(|value| diverge(value + captured));
x.field.map(|value| { diverge(value + captured) });
x.field.map(|value| { diverge(value + captured); });
x.field.map(|value| { { diverge(value + captured); } });
x.field.map(|value| plus_one(value + captured));
x.field.map(|value| { plus_one(value + captured) });
x.field.map(|value| { let y = plus_one(value + captured); });
x.field.map(|value| { plus_one(value + captured); });
x.field.map(|value| { { plus_one(value + captured); } });
x.field.map(|ref value| { do_nothing(value + captured) });
}
fn main() {}