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// run-pass
#[derive(PartialEq, Eq, PartialOrd, Ord)]
enum ES<T> {
ES1 { x: T },
ES2 { x: T, y: T }
}
pub fn main() {
let (es11, es12, es21, es22) = (ES::ES1 {
x: 1
}, ES::ES1 {
x: 2
}, ES::ES2 {
x: 1,
y: 1
}, ES::ES2 {
x: 1,
y: 2
});
// in order for both PartialOrd and Ord
let ess = [es11, es12, es21, es22];
for (i, es1) in ess.iter().enumerate() {
for (j, es2) in ess.iter().enumerate() {
let ord = i.cmp(&j);
let eq = i == j;
let (lt, le) = (i < j, i <= j);
let (gt, ge) = (i > j, i >= j);
// PartialEq
assert_eq!(*es1 == *es2, eq);
assert_eq!(*es1 != *es2, !eq);
// PartialOrd
assert_eq!(*es1 < *es2, lt);
assert_eq!(*es1 > *es2, gt);
assert_eq!(*es1 <= *es2, le);
assert_eq!(*es1 >= *es2, ge);
// Ord
assert_eq!(es1.cmp(es2), ord);
}
}
}
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