rust/tests/ui/unit_cmp.rs

70 lines
1.4 KiB
Rust

#![warn(clippy::unit_cmp)]
#![allow(
clippy::no_effect,
clippy::unnecessary_operation,
clippy::derive_partial_eq_without_eq,
clippy::needless_if
)]
#[derive(PartialEq)]
pub struct ContainsUnit(()); // should be fine
fn main() {
// this is fine
if true == false {}
// this warns
if {
//~^ ERROR: ==-comparison of unit values detected. This will always be true
//~| NOTE: `-D clippy::unit-cmp` implied by `-D warnings`
true;
} == {
false;
} {}
if {
//~^ ERROR: >-comparison of unit values detected. This will always be false
true;
} > {
false;
} {}
assert_eq!(
//~^ ERROR: `assert_eq` of unit values detected. This will always succeed
{
true;
},
{
false;
}
);
debug_assert_eq!(
//~^ ERROR: `debug_assert_eq` of unit values detected. This will always succeed
{
true;
},
{
false;
}
);
assert_ne!(
//~^ ERROR: `assert_ne` of unit values detected. This will always fail
{
true;
},
{
false;
}
);
debug_assert_ne!(
//~^ ERROR: `debug_assert_ne` of unit values detected. This will always fail
{
true;
},
{
false;
}
);
}