From e52837c362d00fb7672dacb30de58dd114d2811e Mon Sep 17 00:00:00 2001 From: Tim Vermeulen Date: Mon, 18 Jul 2022 21:53:35 +0200 Subject: [PATCH] Add note to test about `Unfuse` --- library/core/tests/iter/adapters/skip.rs | 3 +++ 1 file changed, 3 insertions(+) diff --git a/library/core/tests/iter/adapters/skip.rs b/library/core/tests/iter/adapters/skip.rs index a73d9861dfb..65f235e86aa 100644 --- a/library/core/tests/iter/adapters/skip.rs +++ b/library/core/tests/iter/adapters/skip.rs @@ -196,5 +196,8 @@ fn test_skip_nth_back() { #[test] fn test_skip_non_fused() { let non_fused = Unfuse::new(0..10); + + // `Skip` would previously exhaust the iterator in this `next` call and then erroneously try to + // advance it further. `Unfuse` tests that this doesn't happen by panicking in that scenario. let _ = non_fused.skip(20).next(); }