rust-clippy/tests/ui/checked_unwrap/complex_conditionals.rs

54 lines
1.7 KiB
Rust

#![deny(clippy::panicking_unwrap, clippy::unnecessary_unwrap)]
#![allow(clippy::if_same_then_else, clippy::branches_sharing_code)]
fn test_complex_conditions() {
let x: Result<(), ()> = Ok(());
let y: Result<(), ()> = Ok(());
if x.is_ok() && y.is_err() {
x.unwrap(); // unnecessary
x.unwrap_err(); // will panic
y.unwrap(); // will panic
y.unwrap_err(); // unnecessary
} else {
// not statically determinable whether any of the following will always succeed or always fail:
x.unwrap();
x.unwrap_err();
y.unwrap();
y.unwrap_err();
}
if x.is_ok() || y.is_ok() {
// not statically determinable whether any of the following will always succeed or always fail:
x.unwrap();
y.unwrap();
} else {
x.unwrap(); // will panic
x.unwrap_err(); // unnecessary
y.unwrap(); // will panic
y.unwrap_err(); // unnecessary
}
let z: Result<(), ()> = Ok(());
if x.is_ok() && !(y.is_ok() || z.is_err()) {
x.unwrap(); // unnecessary
x.unwrap_err(); // will panic
y.unwrap(); // will panic
y.unwrap_err(); // unnecessary
z.unwrap(); // unnecessary
z.unwrap_err(); // will panic
}
if x.is_ok() || !(y.is_ok() && z.is_err()) {
// not statically determinable whether any of the following will always succeed or always fail:
x.unwrap();
y.unwrap();
z.unwrap();
} else {
x.unwrap(); // will panic
x.unwrap_err(); // unnecessary
y.unwrap(); // unnecessary
y.unwrap_err(); // will panic
z.unwrap(); // will panic
z.unwrap_err(); // unnecessary
}
}
fn main() {}