59 lines
1.6 KiB
Rust
59 lines
1.6 KiB
Rust
/// This test case utilizes `f64` an easy example for `PartialOrd` only types
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/// but the lint itself actually validates any expression where the left
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/// operand implements `PartialOrd` but not `Ord`.
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use std::cmp::Ordering;
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#[allow(nonminimal_bool)]
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#[warn(neg_cmp_op_on_partial_ord)]
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fn main() {
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let a_value = 1.0;
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let another_value = 7.0;
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// --- Bad ---
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// Not Less but potentially Greater, Equal or Uncomparable.
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let _not_less = !(a_value < another_value);
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// Not Less or Equal but potentially Greater or Uncomparable.
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let _not_less_or_equal = !(a_value <= another_value);
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// Not Greater but potentially Less, Equal or Uncomparable.
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let _not_greater = !(a_value > another_value);
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// Not Greater or Equal but potentially Less or Uncomparable.
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let _not_greater_or_equal = !(a_value >= another_value);
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// --- Good ---
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let _not_less = match a_value.partial_cmp(&another_value) {
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None | Some(Ordering::Greater) | Some(Ordering::Equal) => true,
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_ => false,
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};
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let _not_less_or_equal = match a_value.partial_cmp(&another_value) {
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None | Some(Ordering::Greater) => true,
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_ => false,
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};
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let _not_greater = match a_value.partial_cmp(&another_value) {
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None | Some(Ordering::Less) | Some(Ordering::Equal) => true,
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_ => false,
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};
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let _not_greater_or_equal = match a_value.partial_cmp(&another_value) {
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None | Some(Ordering::Less) => true,
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_ => false,
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};
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// --- Should not trigger ---
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let _ = a_value < another_value;
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let _ = a_value <= another_value;
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let _ = a_value > another_value;
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let _ = a_value >= another_value;
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}
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