1 use ahash::{AHasher, CallHasher, RandomState};
2 use std::hash::BuildHasher;
3
4 #[macro_use]
5 extern crate no_panic;
6
7 #[inline(never)]
8 #[no_panic]
hash_test_final(num: i32, string: &str) -> (u64, u64)9 fn hash_test_final(num: i32, string: &str) -> (u64, u64) {
10 use core::hash::Hasher;
11 let mut hasher1 = AHasher::new_with_keys(1, 2);
12 let mut hasher2 = AHasher::new_with_keys(3, 4);
13 hasher1.write_i32(num);
14 hasher2.write(string.as_bytes());
15 (hasher1.finish(), hasher2.finish())
16 }
17
18 #[inline(never)]
hash_test_final_wrapper(num: i32, string: &str)19 fn hash_test_final_wrapper(num: i32, string: &str) {
20 hash_test_final(num, string);
21 }
22
23 struct SimpleBuildHasher {
24 hasher: AHasher,
25 }
26
27 impl BuildHasher for SimpleBuildHasher {
28 type Hasher = AHasher;
29
build_hasher(&self) -> Self::Hasher30 fn build_hasher(&self) -> Self::Hasher {
31 self.hasher.clone()
32 }
33 }
34
35 #[inline(never)]
36 #[no_panic]
hash_test_specialize(num: i32, string: &str) -> (u64, u64)37 fn hash_test_specialize(num: i32, string: &str) -> (u64, u64) {
38 let hasher1 = AHasher::new_with_keys(1, 2);
39 let hasher2 = AHasher::new_with_keys(1, 2);
40 (
41 i32::get_hash(&num, &SimpleBuildHasher { hasher: hasher1 }),
42 <[u8]>::get_hash(string.as_bytes(), &SimpleBuildHasher { hasher: hasher2 }),
43 )
44 }
45
46 #[inline(never)]
hash_test_random_wrapper(num: i32, string: &str)47 fn hash_test_random_wrapper(num: i32, string: &str) {
48 hash_test_specialize(num, string);
49 }
50
51 #[inline(never)]
52 #[no_panic]
hash_test_random(num: i32, string: &str) -> (u64, u64)53 fn hash_test_random(num: i32, string: &str) -> (u64, u64) {
54 let build_hasher1 = RandomState::with_seeds(1, 2, 3, 4);
55 let build_hasher2 = RandomState::with_seeds(1, 2, 3, 4);
56 (
57 i32::get_hash(&num, &build_hasher1),
58 <[u8]>::get_hash(string.as_bytes(), &build_hasher2),
59 )
60 }
61
62 #[inline(never)]
hash_test_specialize_wrapper(num: i32, string: &str)63 fn hash_test_specialize_wrapper(num: i32, string: &str) {
64 hash_test_specialize(num, string);
65 }
66
67 #[test]
test_no_panic()68 fn test_no_panic() {
69 hash_test_final_wrapper(2, "Foo");
70 hash_test_specialize_wrapper(2, "Bar");
71 hash_test_random_wrapper(2, "Baz");
72 }
73