src/test/run-pass/deriving-cmp-generic-tuple-struct.rs

   1 // Copyright 2013 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 #[derive(PartialEq, Eq, PartialOrd, Ord)]
  12 struct TS<T>(T,T);
  13
  14
  15 pub fn main() {
  16     let ts1 = TS(1, 1);
  17     let ts2 = TS(1, 2);
  18
  19     // in order for both PartialOrd and Ord
  20     let tss = [ts1, ts2];
  21
  22     for (i, ts1) in tss.iter().enumerate() {
  23         for (j, ts2) in tss.iter().enumerate() {
  24             let ord = i.cmp(&j);
  25
  26             let eq = i == j;
  27             let lt = i < j;
  28             let le = i <= j;
  29             let gt = i > j;
  30             let ge = i >= j;
  31
  32             // PartialEq
  33             assert_eq!(*ts1 == *ts2, eq);
  34             assert_eq!(*ts1 != *ts2, !eq);
  35
  36             // PartialOrd
  37             assert_eq!(*ts1 < *ts2, lt);
  38             assert_eq!(*ts1 > *ts2, gt);
  39
  40             assert_eq!(*ts1 <= *ts2, le);
  41             assert_eq!(*ts1 >= *ts2, ge);
  42
  43             // Ord
  44             assert_eq!(ts1.cmp(ts2), ord);
  45         }
  46     }
  47 }