src/test/ui/deriving/deriving-cmp-generic-struct.rs

   1 // run-pass
   2 #[derive(PartialEq, Eq, PartialOrd, Ord)]
   3 struct S<T> {
   4     x: T,
   5     y: T
   6 }
   7
   8 pub fn main() {
   9     let s1 = S {x: 1, y: 1};
  10     let s2 = S {x: 1, y: 2};
  11
  12     // in order for both PartialOrd and Ord
  13     let ss = [s1, s2];
  14
  15     for (i, s1) in ss.iter().enumerate() {
  16         for (j, s2) in ss.iter().enumerate() {
  17             let ord = i.cmp(&j);
  18
  19             let eq = i == j;
  20             let lt = i < j;
  21             let le = i <= j;
  22             let gt = i > j;
  23             let ge = i >= j;
  24
  25             // PartialEq
  26             assert_eq!(*s1 == *s2, eq);
  27             assert_eq!(*s1 != *s2, !eq);
  28
  29             // PartialOrd
  30             assert_eq!(*s1 < *s2, lt);
  31             assert_eq!(*s1 > *s2, gt);
  32
  33             assert_eq!(*s1 <= *s2, le);
  34             assert_eq!(*s1 >= *s2, ge);
  35
  36             // Ord
  37             assert_eq!(s1.cmp(s2), ord);
  38         }
  39     }
  40 }