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Diffstat (limited to '')
-rw-r--r-- | src/tools/clippy/tests/ui/derive_ord_xor_partial_ord.rs | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/derive_ord_xor_partial_ord.rs b/src/tools/clippy/tests/ui/derive_ord_xor_partial_ord.rs new file mode 100644 index 000000000..6f12d36d7 --- /dev/null +++ b/src/tools/clippy/tests/ui/derive_ord_xor_partial_ord.rs @@ -0,0 +1,69 @@ +#![warn(clippy::derive_ord_xor_partial_ord)] +#![allow(clippy::unnecessary_wraps)] + +use std::cmp::Ordering; + +#[derive(PartialOrd, Ord, PartialEq, Eq)] +struct DeriveBoth; + +impl PartialEq<u64> for DeriveBoth { + fn eq(&self, _: &u64) -> bool { + true + } +} + +impl PartialOrd<u64> for DeriveBoth { + fn partial_cmp(&self, _: &u64) -> Option<Ordering> { + Some(Ordering::Equal) + } +} + +#[derive(Ord, PartialEq, Eq)] +struct DeriveOrd; + +impl PartialOrd for DeriveOrd { + fn partial_cmp(&self, other: &Self) -> Option<Ordering> { + Some(other.cmp(self)) + } +} + +#[derive(Ord, PartialEq, Eq)] +struct DeriveOrdWithExplicitTypeVariable; + +impl PartialOrd<DeriveOrdWithExplicitTypeVariable> for DeriveOrdWithExplicitTypeVariable { + fn partial_cmp(&self, other: &Self) -> Option<Ordering> { + Some(other.cmp(self)) + } +} + +#[derive(PartialOrd, PartialEq, Eq)] +struct DerivePartialOrd; + +impl std::cmp::Ord for DerivePartialOrd { + fn cmp(&self, other: &Self) -> Ordering { + Ordering::Less + } +} + +#[derive(PartialOrd, PartialEq, Eq)] +struct ImplUserOrd; + +trait Ord {} + +// We don't want to lint on user-defined traits called `Ord` +impl Ord for ImplUserOrd {} + +mod use_ord { + use std::cmp::{Ord, Ordering}; + + #[derive(PartialOrd, PartialEq, Eq)] + struct DerivePartialOrdInUseOrd; + + impl Ord for DerivePartialOrdInUseOrd { + fn cmp(&self, other: &Self) -> Ordering { + Ordering::Less + } + } +} + +fn main() {} |