tests/ui/binop/binops.rs

   1 // run-pass
   2
   3 #![allow(non_camel_case_types)]
   4 // Binop corner cases
   5
   6 fn test_nil() {
   7     assert_eq!((), ());
   8     assert!((!(() != ())));
   9     assert!((!(() < ())));
  10     assert!((() <= ()));
  11     assert!((!(() > ())));
  12     assert!((() >= ()));
  13 }
  14
  15 fn test_bool() {
  16     assert!((!(true < false)));
  17     assert!((!(true <= false)));
  18     assert!((true > false));
  19     assert!((true >= false));
  20
  21     assert!((false < true));
  22     assert!((false <= true));
  23     assert!((!(false > true)));
  24     assert!((!(false >= true)));
  25
  26     // Bools support bitwise binops
  27     assert_eq!(false & false, false);
  28     assert_eq!(true & false, false);
  29     assert_eq!(true & true, true);
  30     assert_eq!(false | false, false);
  31     assert_eq!(true | false, true);
  32     assert_eq!(true | true, true);
  33     assert_eq!(false ^ false, false);
  34     assert_eq!(true ^ false, true);
  35     assert_eq!(true ^ true, false);
  36 }
  37
  38 fn test_ptr() {
  39     unsafe {
  40         let p1: *const u8 = ::std::mem::transmute(0_usize);
  41         let p2: *const u8 = ::std::mem::transmute(0_usize);
  42         let p3: *const u8 = ::std::mem::transmute(1_usize);
  43
  44         assert_eq!(p1, p2);
  45         assert!(p1 != p3);
  46         assert!(p1 < p3);
  47         assert!(p1 <= p3);
  48         assert!(p3 > p1);
  49         assert!(p3 >= p3);
  50         assert!(p1 <= p2);
  51         assert!(p1 >= p2);
  52     }
  53 }
  54
  55 #[derive(PartialEq, Debug)]
  56 struct p {
  57   x: isize,
  58   y: isize,
  59 }
  60
  61 fn p(x: isize, y: isize) -> p {
  62     p {
  63         x: x,
  64         y: y
  65     }
  66 }
  67
  68 fn test_class() {
  69   let q = p(1, 2);
  70   let mut r = p(1, 2);
  71
  72   unsafe {
  73   println!("q = {:x}, r = {:x}",
  74          (::std::mem::transmute::<*const p, usize>(&q)),
  75          (::std::mem::transmute::<*const p, usize>(&r)));
  76   }
  77   assert_eq!(q, r);
  78   r.y = 17;
  79   assert!((r.y != q.y));
  80   assert_eq!(r.y, 17);
  81   assert!((q != r));
  82 }
  83
  84 pub fn main() {
  85     test_nil();
  86     test_bool();
  87     test_ptr();
  88     test_class();
  89 }