rust/tests/ui/redundant_pattern_matching_const_result.rs
2020-07-06 18:25:20 +02:00

51 lines
1016 B
Rust

// run-rustfix
#![feature(const_result)]
#![warn(clippy::redundant_pattern_matching)]
#![allow(clippy::match_like_matches_macro, unused)]
// Test that results are linted with the feature enabled.
const fn issue_5697() {
if let Ok(_) = Ok::<i32, i32>(42) {}
if let Err(_) = Err::<i32, i32>(42) {}
while let Ok(_) = Ok::<i32, i32>(10) {}
while let Err(_) = Ok::<i32, i32>(10) {}
match Ok::<i32, i32>(42) {
Ok(_) => true,
Err(_) => false,
};
match Err::<i32, i32>(42) {
Ok(_) => false,
Err(_) => true,
};
// These should not be linted until `const_option` is implemented.
// See https://github.com/rust-lang/rust/issues/67441
if let Some(_) = Some(42) {}
if let None = None::<()> {}
while let Some(_) = Some(42) {}
while let None = None::<()> {}
match Some(42) {
Some(_) => true,
None => false,
};
match None::<()> {
Some(_) => false,
None => true,
};
}
fn main() {}