diff options
| -rw-r--r-- | library/coretests/tests/iter/adapters/enumerate.rs | 10 | ||||
| -rw-r--r-- | library/coretests/tests/lib.rs | 1 |
2 files changed, 11 insertions, 0 deletions
diff --git a/library/coretests/tests/iter/adapters/enumerate.rs b/library/coretests/tests/iter/adapters/enumerate.rs index b57d51c077e..2294f856b58 100644 --- a/library/coretests/tests/iter/adapters/enumerate.rs +++ b/library/coretests/tests/iter/adapters/enumerate.rs @@ -120,3 +120,13 @@ fn test_double_ended_enumerate() { assert_eq!(it.next_back(), Some((2, 3))); assert_eq!(it.next(), None); } + +#[test] +fn test_empty_iterator_enumerate_next_index() { + let mut it = empty::<i32>().enumerate(); + assert_eq!(it.next_index(), 0); + assert_eq!(it.next_index(), 0); + assert_eq!(it.next(), None); + assert_eq!(it.next_index(), 0); + assert_eq!(it.next_index(), 0); +} diff --git a/library/coretests/tests/lib.rs b/library/coretests/tests/lib.rs index 1c43bfe0ed4..ac111575938 100644 --- a/library/coretests/tests/lib.rs +++ b/library/coretests/tests/lib.rs @@ -63,6 +63,7 @@ #![feature(maybe_uninit_write_slice)] #![feature(min_specialization)] #![feature(never_type)] +#![feature(next_index)] #![feature(numfmt)] #![feature(pattern)] #![feature(pointer_is_aligned_to)] |