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Add test for [u8]'s Ord (and fix the old test for ord)

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The old test for Ord used no asserts, and appeared to have a wrong test. (!).
This commit is contained in:
Ulrik Sverdrup 2016-04-05 14:06:20 +02:00
parent 5d56e1daed
commit 28c4d12c03
1 changed files with 36 additions and 6 deletions
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42
src/libcollectionstest/slice.rs
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@ -574,18 +574,48 @@ fn test_slice_2() {
assert_eq!(v[1], 3); assert_eq!(v[1], 3);
} }
macro_rules! assert_order {
(Greater, $a:expr, $b:expr) => {
assert_eq!($a.cmp($b), Greater);
assert!($a > $b);
};
(Less, $a:expr, $b:expr) => {
assert_eq!($a.cmp($b), Less);
assert!($a < $b);
};
(Equal, $a:expr, $b:expr) => {
assert_eq!($a.cmp($b), Equal);
assert_eq!($a, $b);
}
}
#[test] #[test]
fn test_total_ord() { fn test_total_ord_u8() {
let c = &[1u8, 2, 3];
assert_order!(Greater, &[1u8, 2, 3, 4][..], &c[..]);
let c = &[1u8, 2, 3, 4];
assert_order!(Less, &[1u8, 2, 3][..], &c[..]);
let c = &[1u8, 2, 3, 6];
assert_order!(Equal, &[1u8, 2, 3, 6][..], &c[..]);
let c = &[1u8, 2, 3, 4, 5, 6];
assert_order!(Less, &[1u8, 2, 3, 4, 5, 5, 5, 5][..], &c[..]);
let c = &[1u8, 2, 3, 4];
assert_order!(Greater, &[2u8, 2][..], &c[..]);
}
#[test]
fn test_total_ord_i32() {
let c = &[1, 2, 3]; let c = &[1, 2, 3];
[1, 2, 3, 4][..].cmp(c) == Greater; assert_order!(Greater, &[1, 2, 3, 4][..], &c[..]);
let c = &[1, 2, 3, 4]; let c = &[1, 2, 3, 4];
[1, 2, 3][..].cmp(c) == Less; assert_order!(Less, &[1, 2, 3][..], &c[..]);
let c = &[1, 2, 3, 6]; let c = &[1, 2, 3, 6];
[1, 2, 3, 4][..].cmp(c) == Equal; assert_order!(Equal, &[1, 2, 3, 6][..], &c[..]);
let c = &[1, 2, 3, 4, 5, 6]; let c = &[1, 2, 3, 4, 5, 6];
[1, 2, 3, 4, 5, 5, 5, 5][..].cmp(c) == Less; assert_order!(Less, &[1, 2, 3, 4, 5, 5, 5, 5][..], &c[..]);
let c = &[1, 2, 3, 4]; let c = &[1, 2, 3, 4];
[2, 2][..].cmp(c) == Greater; assert_order!(Greater, &[2, 2][..], &c[..]);
} }
#[test] #[test]