squiid/rust
1
0
Fork 0
Code Issues Pull requests Projects Activity

Add second test case in make_contiguous_head_to_end

Browse source
This commit is contained in:
Markus Everling 2022-11-26 23:08:57 +01:00
parent 451259811a
commit acf95adfe2
1 changed files with 49 additions and 10 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

59
library/alloc/src/collections/vec_deque/tests.rs
View file

@ -549,16 +549,55 @@ fn make_contiguous_small_free() {
#[test]
fn make_contiguous_head_to_end() {
let mut dq = VecDeque::with_capacity(3);
dq.push_front('B');
dq.push_front('A');
dq.push_back('C');
dq.make_contiguous();
let expected_head = 0;
let expected_len = 3;
assert_eq!(expected_head, dq.head);
assert_eq!(expected_len, dq.len);
assert_eq!((&['A', 'B', 'C'] as &[_], &[] as &[_]), dq.as_slices());
let mut tester = VecDeque::with_capacity(16);
for i in b'A'..b'L' {
tester.push_back(i as char);
}
for i in b'L'..b'Q' {
tester.push_front(i as char);
}
assert_eq!(
tester,
['P', 'O', 'N', 'M', 'L', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K']
);
// ABCDEFGHIJKPONML
let expected_start = 0;
tester.make_contiguous();
assert_eq!(tester.head, expected_start);
assert_eq!(
(
&['P', 'O', 'N', 'M', 'L', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K']
as &[_],
&[] as &[_]
),
tester.as_slices()
);
tester.clear();
for i in b'L'..b'Q' {
tester.push_back(i as char);
}
for i in b'A'..b'L' {
tester.push_front(i as char);
}
// LMNOPKJIHGFEDCBA
let expected_start = 0;
tester.make_contiguous();
assert_eq!(tester.head, expected_start);
assert_eq!(
(
&['K', 'J', 'I', 'H', 'G', 'F', 'E', 'D', 'C', 'B', 'A', 'L', 'M', 'N', 'O', 'P']
as &[_],
&[] as &[_]
),
tester.as_slices()
);
}
#[test]