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tests: add corner case (empty list)

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This commit is contained in:
Lenny222 2011-12-21 22:57:57 +01:00 committed by Marijn Haverbeke
parent 341e4151d6
commit 7beb21c6e3
1 changed files with 19 additions and 11 deletions
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30
src/test/stdtest/list.rs
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@ -15,6 +15,12 @@ fn test_from_vec() {
assert (head(tail(tail(l))) == 2);
}
#[test]
fn test_from_vec_empty() {
let empty : list::list<int> = from_vec([]);
assert (empty == list::nil::<int>);
}
#[test]
fn test_from_vec_mut() {
let l = from_vec([mutable 0, 1, 2]);
@ -25,10 +31,11 @@ fn test_from_vec_mut() {
#[test]
fn test_foldl() {
let l = from_vec([0, 1, 2, 3, 4]);
fn add(&&a: uint, &&b: int) -> uint { ret a + (b as uint); }
let rs = list::foldl(l, 0u, add);
assert (rs == 10u);
let l = from_vec([0, 1, 2, 3, 4]);
let empty = list::nil::<int>;
assert (list::foldl(l, 0u, add) == 10u);
assert (list::foldl(empty, 0u, add) == 0u);
}
#[test]
@ -37,26 +44,25 @@ fn test_foldl2() {
a - b
}
let l = from_vec([1, 2, 3, 4]);
let sum = list::foldl(l, 0, sub);
assert sum == -10;
assert (list::foldl(l, 0, sub) == -10);
}
#[test]
fn test_find_success() {
let l = from_vec([0, 1, 2]);
fn match(&&i: int) -> option::t<int> {
ret if i == 2 { option::some(i) } else { option::none::<int> };
}
let rs = list::find(l, match);
assert (rs == option::some(2));
let l = from_vec([0, 1, 2]);
assert (list::find(l, match) == option::some(2));
}
#[test]
fn test_find_fail() {
let l = from_vec([0, 1, 2]);
fn match(&&_i: int) -> option::t<int> { ret option::none::<int>; }
let rs = list::find(l, match);
assert (rs == option::none::<int>);
let l = from_vec([0, 1, 2]);
let empty = list::nil::<int>;
assert (list::find(l, match) == option::none::<int>);
assert (list::find(empty, match) == option::none::<int>);
}
#[test]
@ -72,6 +78,8 @@ fn test_has() {
#[test]
fn test_len() {
let l = from_vec([0, 1, 2]);
let empty = list::nil::<int>;
assert (list::len(l) == 3u);
assert (list::len(empty) == 0u);
}