From 0bbe468271c3afa84c18979d8a5b9574d2bf2070 Mon Sep 17 00:00:00 2001 From: kennytm Date: Mon, 21 Aug 2017 22:15:02 +0800 Subject: impl Hasher for {&mut Hasher, Box} --- src/liballoc/tests/lib.rs | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'src/liballoc/tests') diff --git a/src/liballoc/tests/lib.rs b/src/liballoc/tests/lib.rs index 8f3e71ef794..61377018455 100644 --- a/src/liballoc/tests/lib.rs +++ b/src/liballoc/tests/lib.rs @@ -50,3 +50,16 @@ fn hash(t: &T) -> u64 { t.hash(&mut s); s.finish() } + +#[test] +fn test_boxed_hasher() { + let ordinary_hash = hash(&5u32); + + let mut hasher_1 = Box::new(DefaultHasher::new()); + 5u32.hash(&mut hasher_1); + assert_eq!(ordinary_hash, hasher_1.finish()); + + let mut hasher_2 = Box::new(DefaultHasher::new()) as Box; + 5u32.hash(&mut hasher_2); + assert_eq!(ordinary_hash, hasher_2.finish()); +} -- cgit 1.4.1-3-g733a5