rust-clippy/tests/ui/unnecessary_fallible_conversions.rs

43 lines
1.7 KiB
Rust

#![warn(clippy::unnecessary_fallible_conversions)]
fn main() {
// --- TryFromMethod `T::try_from(u)` ---
let _: i64 = 0i32.try_into().unwrap();
//~^ ERROR: use of a fallible conversion when an infallible one could be used
let _: i64 = 0i32.try_into().expect("can't happen");
//~^ ERROR: use of a fallible conversion when an infallible one could be used
// --- TryFromFunction `T::try_from(U)` ---
let _ = i64::try_from(0i32).unwrap();
//~^ ERROR: use of a fallible conversion when an infallible one could be used
let _ = i64::try_from(0i32).expect("can't happen");
//~^ ERROR: use of a fallible conversion when an infallible one could be used
// --- TryIntoFunction `U::try_into(t)` ---
let _: i64 = i32::try_into(0).unwrap();
//~^ ERROR: use of a fallible conversion when an infallible one could be used
let _: i64 = i32::try_into(0i32).expect("can't happen");
//~^ ERROR: use of a fallible conversion when an infallible one could be used
// --- TryFromFunction `<T as TryFrom<U>>::try_from(U)` ---
let _ = <i64 as TryFrom<i32>>::try_from(0).unwrap();
//~^ ERROR: use of a fallible conversion when an infallible one could be used
let _ = <i64 as TryFrom<i32>>::try_from(0).expect("can't happen");
//~^ ERROR: use of a fallible conversion when an infallible one could be used
// --- TryIntoFunction `<U as TryInto<_>>::try_into(U)` ---
let _: i64 = <i32 as TryInto<_>>::try_into(0).unwrap();
//~^ ERROR: use of a fallible conversion when an infallible one could be used
let _: i64 = <i32 as TryInto<_>>::try_into(0).expect("can't happen");
//~^ ERROR: use of a fallible conversion when an infallible one could be used
}