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Improve flatten-fuse tests

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This commit is contained in:
Giacomo Stevanato 2021-01-23 20:52:59 +01:00
parent 4153fa82ff
commit f241c10223
1 changed files with 17 additions and 0 deletions
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17
library/core/tests/iter/adapters/flatten.rs
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@ -64,6 +64,14 @@ fn test_flatten_non_fused_outer() {
assert_eq!(iter.next_back(), Some(1));
assert_eq!(iter.next(), Some(0));
assert_eq!(iter.next(), None);
assert_eq!(iter.next(), None);
let mut iter = NonFused::new(once(0..2)).flatten();
assert_eq!(iter.next(), Some(0));
assert_eq!(iter.next_back(), Some(1));
assert_eq!(iter.next_back(), None);
assert_eq!(iter.next_back(), None);
}
#[test]
@ -74,6 +82,15 @@ fn test_flatten_non_fused_inner() {
assert_eq!(iter.next(), Some(0));
assert_eq!(iter.next(), Some(1));
assert_eq!(iter.next(), None);
assert_eq!(iter.next(), None);
let mut iter = once(0..1).chain(once(1..3)).flat_map(NonFused::new);
assert_eq!(iter.next(), Some(0));
assert_eq!(iter.next_back(), Some(2));
assert_eq!(iter.next_back(), Some(1));
assert_eq!(iter.next_back(), None);
assert_eq!(iter.next_back(), None);
}
#[test]