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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:20:39 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:20:39 +0000 |
commit | 1376c5a617be5c25655d0d7cb63e3beaa5a6e026 (patch) | |
tree | 3bb8d61aee02bc7a15eab3f36e3b921afc2075d0 /library/core/tests/iter/adapters/enumerate.rs | |
parent | Releasing progress-linux version 1.69.0+dfsg1-1~progress7.99u1. (diff) | |
download | rustc-1376c5a617be5c25655d0d7cb63e3beaa5a6e026.tar.xz rustc-1376c5a617be5c25655d0d7cb63e3beaa5a6e026.zip |
Merging upstream version 1.70.0+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'library/core/tests/iter/adapters/enumerate.rs')
-rw-r--r-- | library/core/tests/iter/adapters/enumerate.rs | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/library/core/tests/iter/adapters/enumerate.rs b/library/core/tests/iter/adapters/enumerate.rs index 0e6033878..ff57973a6 100644 --- a/library/core/tests/iter/adapters/enumerate.rs +++ b/library/core/tests/iter/adapters/enumerate.rs @@ -1,4 +1,5 @@ use core::iter::*; +use core::num::NonZeroUsize; #[test] fn test_iterator_enumerate() { @@ -56,6 +57,20 @@ fn test_iterator_enumerate_count() { } #[test] +fn test_iterator_enumerate_advance_by() { + let xs = [0, 1, 2, 3, 4, 5]; + let mut it = xs.iter().enumerate(); + assert_eq!(it.advance_by(0), Ok(())); + assert_eq!(it.next(), Some((0, &0))); + assert_eq!(it.advance_by(1), Ok(())); + assert_eq!(it.next(), Some((2, &2))); + assert_eq!(it.advance_by(2), Ok(())); + assert_eq!(it.next(), Some((5, &5))); + assert_eq!(it.advance_by(1), Err(NonZeroUsize::new(1).unwrap())); + assert_eq!(it.next(), None); +} + +#[test] fn test_iterator_enumerate_fold() { let xs = [0, 1, 2, 3, 4, 5]; let mut it = xs.iter().enumerate(); |