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Commit | Line | Data |
---|---|---|
9e0c209e SL |
1 | #![allow(deprecated)] |
2 | ||
c1a9b12d | 3 | use core::hash::{Hash, Hasher}; |
0531ce1d | 4 | use core::hash::{SipHasher, SipHasher13}; |
60c5eb7d | 5 | use core::{mem, slice}; |
1a4d82fc JJ |
6 | |
7 | // Hash just the bytes of the slice, without length prefix | |
8 | struct Bytes<'a>(&'a [u8]); | |
9 | ||
c1a9b12d | 10 | impl<'a> Hash for Bytes<'a> { |
1a4d82fc | 11 | #[allow(unused_must_use)] |
c1a9b12d | 12 | fn hash<H: Hasher>(&self, state: &mut H) { |
1a4d82fc JJ |
13 | let Bytes(v) = *self; |
14 | state.write(v); | |
15 | } | |
16 | } | |
17 | ||
c1a9b12d | 18 | macro_rules! u8to64_le { |
60c5eb7d XL |
19 | ($buf:expr, $i:expr) => { |
20 | $buf[0 + $i] as u64 | |
21 | | ($buf[1 + $i] as u64) << 8 | |
22 | | ($buf[2 + $i] as u64) << 16 | |
23 | | ($buf[3 + $i] as u64) << 24 | |
24 | | ($buf[4 + $i] as u64) << 32 | |
25 | | ($buf[5 + $i] as u64) << 40 | |
26 | | ($buf[6 + $i] as u64) << 48 | |
27 | | ($buf[7 + $i] as u64) << 56 | |
28 | }; | |
29 | ($buf:expr, $i:expr, $len:expr) => {{ | |
c1a9b12d SL |
30 | let mut t = 0; |
31 | let mut out = 0; | |
32 | while t < $len { | |
60c5eb7d | 33 | out |= ($buf[t + $i] as u64) << t * 8; |
c1a9b12d SL |
34 | t += 1; |
35 | } | |
36 | out | |
60c5eb7d | 37 | }}; |
c1a9b12d SL |
38 | } |
39 | ||
3157f602 | 40 | fn hash_with<H: Hasher, T: Hash>(mut st: H, x: &T) -> u64 { |
c1a9b12d SL |
41 | x.hash(&mut st); |
42 | st.finish() | |
43 | } | |
44 | ||
3157f602 XL |
45 | fn hash<T: Hash>(x: &T) -> u64 { |
46 | hash_with(SipHasher::new(), x) | |
c1a9b12d SL |
47 | } |
48 | ||
1a4d82fc JJ |
49 | #[test] |
50 | #[allow(unused_must_use)] | |
3157f602 | 51 | fn test_siphash_1_3() { |
60c5eb7d XL |
52 | let vecs: [[u8; 8]; 64] = [ |
53 | [0xdc, 0xc4, 0x0f, 0x05, 0x58, 0x01, 0xac, 0xab], | |
54 | [0x93, 0xca, 0x57, 0x7d, 0xf3, 0x9b, 0xf4, 0xc9], | |
55 | [0x4d, 0xd4, 0xc7, 0x4d, 0x02, 0x9b, 0xcb, 0x82], | |
56 | [0xfb, 0xf7, 0xdd, 0xe7, 0xb8, 0x0a, 0xf8, 0x8b], | |
57 | [0x28, 0x83, 0xd3, 0x88, 0x60, 0x57, 0x75, 0xcf], | |
58 | [0x67, 0x3b, 0x53, 0x49, 0x2f, 0xd5, 0xf9, 0xde], | |
59 | [0xa7, 0x22, 0x9f, 0xc5, 0x50, 0x2b, 0x0d, 0xc5], | |
60 | [0x40, 0x11, 0xb1, 0x9b, 0x98, 0x7d, 0x92, 0xd3], | |
61 | [0x8e, 0x9a, 0x29, 0x8d, 0x11, 0x95, 0x90, 0x36], | |
62 | [0xe4, 0x3d, 0x06, 0x6c, 0xb3, 0x8e, 0xa4, 0x25], | |
63 | [0x7f, 0x09, 0xff, 0x92, 0xee, 0x85, 0xde, 0x79], | |
64 | [0x52, 0xc3, 0x4d, 0xf9, 0xc1, 0x18, 0xc1, 0x70], | |
65 | [0xa2, 0xd9, 0xb4, 0x57, 0xb1, 0x84, 0xa3, 0x78], | |
66 | [0xa7, 0xff, 0x29, 0x12, 0x0c, 0x76, 0x6f, 0x30], | |
67 | [0x34, 0x5d, 0xf9, 0xc0, 0x11, 0xa1, 0x5a, 0x60], | |
68 | [0x56, 0x99, 0x51, 0x2a, 0x6d, 0xd8, 0x20, 0xd3], | |
69 | [0x66, 0x8b, 0x90, 0x7d, 0x1a, 0xdd, 0x4f, 0xcc], | |
70 | [0x0c, 0xd8, 0xdb, 0x63, 0x90, 0x68, 0xf2, 0x9c], | |
71 | [0x3e, 0xe6, 0x73, 0xb4, 0x9c, 0x38, 0xfc, 0x8f], | |
72 | [0x1c, 0x7d, 0x29, 0x8d, 0xe5, 0x9d, 0x1f, 0xf2], | |
73 | [0x40, 0xe0, 0xcc, 0xa6, 0x46, 0x2f, 0xdc, 0xc0], | |
74 | [0x44, 0xf8, 0x45, 0x2b, 0xfe, 0xab, 0x92, 0xb9], | |
75 | [0x2e, 0x87, 0x20, 0xa3, 0x9b, 0x7b, 0xfe, 0x7f], | |
76 | [0x23, 0xc1, 0xe6, 0xda, 0x7f, 0x0e, 0x5a, 0x52], | |
77 | [0x8c, 0x9c, 0x34, 0x67, 0xb2, 0xae, 0x64, 0xf4], | |
78 | [0x79, 0x09, 0x5b, 0x70, 0x28, 0x59, 0xcd, 0x45], | |
79 | [0xa5, 0x13, 0x99, 0xca, 0xe3, 0x35, 0x3e, 0x3a], | |
80 | [0x35, 0x3b, 0xde, 0x4a, 0x4e, 0xc7, 0x1d, 0xa9], | |
81 | [0x0d, 0xd0, 0x6c, 0xef, 0x02, 0xed, 0x0b, 0xfb], | |
82 | [0xf4, 0xe1, 0xb1, 0x4a, 0xb4, 0x3c, 0xd9, 0x88], | |
83 | [0x63, 0xe6, 0xc5, 0x43, 0xd6, 0x11, 0x0f, 0x54], | |
84 | [0xbc, 0xd1, 0x21, 0x8c, 0x1f, 0xdd, 0x70, 0x23], | |
85 | [0x0d, 0xb6, 0xa7, 0x16, 0x6c, 0x7b, 0x15, 0x81], | |
86 | [0xbf, 0xf9, 0x8f, 0x7a, 0xe5, 0xb9, 0x54, 0x4d], | |
87 | [0x3e, 0x75, 0x2a, 0x1f, 0x78, 0x12, 0x9f, 0x75], | |
88 | [0x91, 0x6b, 0x18, 0xbf, 0xbe, 0xa3, 0xa1, 0xce], | |
89 | [0x06, 0x62, 0xa2, 0xad, 0xd3, 0x08, 0xf5, 0x2c], | |
90 | [0x57, 0x30, 0xc3, 0xa3, 0x2d, 0x1c, 0x10, 0xb6], | |
91 | [0xa1, 0x36, 0x3a, 0xae, 0x96, 0x74, 0xf4, 0xb3], | |
92 | [0x92, 0x83, 0x10, 0x7b, 0x54, 0x57, 0x6b, 0x62], | |
93 | [0x31, 0x15, 0xe4, 0x99, 0x32, 0x36, 0xd2, 0xc1], | |
94 | [0x44, 0xd9, 0x1a, 0x3f, 0x92, 0xc1, 0x7c, 0x66], | |
95 | [0x25, 0x88, 0x13, 0xc8, 0xfe, 0x4f, 0x70, 0x65], | |
96 | [0xa6, 0x49, 0x89, 0xc2, 0xd1, 0x80, 0xf2, 0x24], | |
97 | [0x6b, 0x87, 0xf8, 0xfa, 0xed, 0x1c, 0xca, 0xc2], | |
98 | [0x96, 0x21, 0x04, 0x9f, 0xfc, 0x4b, 0x16, 0xc2], | |
99 | [0x23, 0xd6, 0xb1, 0x68, 0x93, 0x9c, 0x6e, 0xa1], | |
100 | [0xfd, 0x14, 0x51, 0x8b, 0x9c, 0x16, 0xfb, 0x49], | |
101 | [0x46, 0x4c, 0x07, 0xdf, 0xf8, 0x43, 0x31, 0x9f], | |
102 | [0xb3, 0x86, 0xcc, 0x12, 0x24, 0xaf, 0xfd, 0xc6], | |
103 | [0x8f, 0x09, 0x52, 0x0a, 0xd1, 0x49, 0xaf, 0x7e], | |
104 | [0x9a, 0x2f, 0x29, 0x9d, 0x55, 0x13, 0xf3, 0x1c], | |
105 | [0x12, 0x1f, 0xf4, 0xa2, 0xdd, 0x30, 0x4a, 0xc4], | |
106 | [0xd0, 0x1e, 0xa7, 0x43, 0x89, 0xe9, 0xfa, 0x36], | |
107 | [0xe6, 0xbc, 0xf0, 0x73, 0x4c, 0xb3, 0x8f, 0x31], | |
108 | [0x80, 0xe9, 0xa7, 0x70, 0x36, 0xbf, 0x7a, 0xa2], | |
109 | [0x75, 0x6d, 0x3c, 0x24, 0xdb, 0xc0, 0xbc, 0xb4], | |
110 | [0x13, 0x15, 0xb7, 0xfd, 0x52, 0xd8, 0xf8, 0x23], | |
111 | [0x08, 0x8a, 0x7d, 0xa6, 0x4d, 0x5f, 0x03, 0x8f], | |
112 | [0x48, 0xf1, 0xe8, 0xb7, 0xe5, 0xd0, 0x9c, 0xd8], | |
113 | [0xee, 0x44, 0xa6, 0xf7, 0xbc, 0xe6, 0xf4, 0xf6], | |
114 | [0xf2, 0x37, 0x18, 0x0f, 0xd8, 0x9a, 0xc5, 0xae], | |
115 | [0xe0, 0x94, 0x66, 0x4b, 0x15, 0xf6, 0xb2, 0xc3], | |
116 | [0xa8, 0xb3, 0xbb, 0xb7, 0x62, 0x90, 0x19, 0x9d], | |
3157f602 XL |
117 | ]; |
118 | ||
119 | let k0 = 0x_07_06_05_04_03_02_01_00; | |
120 | let k1 = 0x_0f_0e_0d_0c_0b_0a_09_08; | |
121 | let mut buf = Vec::new(); | |
122 | let mut t = 0; | |
123 | let mut state_inc = SipHasher13::new_with_keys(k0, k1); | |
124 | ||
125 | while t < 64 { | |
126 | let vec = u8to64_le!(vecs[t], 0); | |
127 | let out = hash_with(SipHasher13::new_with_keys(k0, k1), &Bytes(&buf)); | |
128 | assert_eq!(vec, out); | |
129 | ||
130 | let full = hash_with(SipHasher13::new_with_keys(k0, k1), &Bytes(&buf)); | |
131 | let i = state_inc.finish(); | |
132 | ||
133 | assert_eq!(full, i); | |
134 | assert_eq!(full, vec); | |
135 | ||
136 | buf.push(t as u8); | |
137 | Hasher::write(&mut state_inc, &[t as u8]); | |
138 | ||
139 | t += 1; | |
140 | } | |
141 | } | |
142 | ||
143 | #[test] | |
144 | #[allow(unused_must_use)] | |
145 | fn test_siphash_2_4() { | |
60c5eb7d XL |
146 | let vecs: [[u8; 8]; 64] = [ |
147 | [0x31, 0x0e, 0x0e, 0xdd, 0x47, 0xdb, 0x6f, 0x72], | |
148 | [0xfd, 0x67, 0xdc, 0x93, 0xc5, 0x39, 0xf8, 0x74], | |
149 | [0x5a, 0x4f, 0xa9, 0xd9, 0x09, 0x80, 0x6c, 0x0d], | |
150 | [0x2d, 0x7e, 0xfb, 0xd7, 0x96, 0x66, 0x67, 0x85], | |
151 | [0xb7, 0x87, 0x71, 0x27, 0xe0, 0x94, 0x27, 0xcf], | |
152 | [0x8d, 0xa6, 0x99, 0xcd, 0x64, 0x55, 0x76, 0x18], | |
153 | [0xce, 0xe3, 0xfe, 0x58, 0x6e, 0x46, 0xc9, 0xcb], | |
154 | [0x37, 0xd1, 0x01, 0x8b, 0xf5, 0x00, 0x02, 0xab], | |
155 | [0x62, 0x24, 0x93, 0x9a, 0x79, 0xf5, 0xf5, 0x93], | |
156 | [0xb0, 0xe4, 0xa9, 0x0b, 0xdf, 0x82, 0x00, 0x9e], | |
157 | [0xf3, 0xb9, 0xdd, 0x94, 0xc5, 0xbb, 0x5d, 0x7a], | |
158 | [0xa7, 0xad, 0x6b, 0x22, 0x46, 0x2f, 0xb3, 0xf4], | |
159 | [0xfb, 0xe5, 0x0e, 0x86, 0xbc, 0x8f, 0x1e, 0x75], | |
160 | [0x90, 0x3d, 0x84, 0xc0, 0x27, 0x56, 0xea, 0x14], | |
161 | [0xee, 0xf2, 0x7a, 0x8e, 0x90, 0xca, 0x23, 0xf7], | |
162 | [0xe5, 0x45, 0xbe, 0x49, 0x61, 0xca, 0x29, 0xa1], | |
163 | [0xdb, 0x9b, 0xc2, 0x57, 0x7f, 0xcc, 0x2a, 0x3f], | |
164 | [0x94, 0x47, 0xbe, 0x2c, 0xf5, 0xe9, 0x9a, 0x69], | |
165 | [0x9c, 0xd3, 0x8d, 0x96, 0xf0, 0xb3, 0xc1, 0x4b], | |
166 | [0xbd, 0x61, 0x79, 0xa7, 0x1d, 0xc9, 0x6d, 0xbb], | |
167 | [0x98, 0xee, 0xa2, 0x1a, 0xf2, 0x5c, 0xd6, 0xbe], | |
168 | [0xc7, 0x67, 0x3b, 0x2e, 0xb0, 0xcb, 0xf2, 0xd0], | |
169 | [0x88, 0x3e, 0xa3, 0xe3, 0x95, 0x67, 0x53, 0x93], | |
170 | [0xc8, 0xce, 0x5c, 0xcd, 0x8c, 0x03, 0x0c, 0xa8], | |
171 | [0x94, 0xaf, 0x49, 0xf6, 0xc6, 0x50, 0xad, 0xb8], | |
172 | [0xea, 0xb8, 0x85, 0x8a, 0xde, 0x92, 0xe1, 0xbc], | |
173 | [0xf3, 0x15, 0xbb, 0x5b, 0xb8, 0x35, 0xd8, 0x17], | |
174 | [0xad, 0xcf, 0x6b, 0x07, 0x63, 0x61, 0x2e, 0x2f], | |
175 | [0xa5, 0xc9, 0x1d, 0xa7, 0xac, 0xaa, 0x4d, 0xde], | |
176 | [0x71, 0x65, 0x95, 0x87, 0x66, 0x50, 0xa2, 0xa6], | |
177 | [0x28, 0xef, 0x49, 0x5c, 0x53, 0xa3, 0x87, 0xad], | |
178 | [0x42, 0xc3, 0x41, 0xd8, 0xfa, 0x92, 0xd8, 0x32], | |
179 | [0xce, 0x7c, 0xf2, 0x72, 0x2f, 0x51, 0x27, 0x71], | |
180 | [0xe3, 0x78, 0x59, 0xf9, 0x46, 0x23, 0xf3, 0xa7], | |
181 | [0x38, 0x12, 0x05, 0xbb, 0x1a, 0xb0, 0xe0, 0x12], | |
182 | [0xae, 0x97, 0xa1, 0x0f, 0xd4, 0x34, 0xe0, 0x15], | |
183 | [0xb4, 0xa3, 0x15, 0x08, 0xbe, 0xff, 0x4d, 0x31], | |
184 | [0x81, 0x39, 0x62, 0x29, 0xf0, 0x90, 0x79, 0x02], | |
185 | [0x4d, 0x0c, 0xf4, 0x9e, 0xe5, 0xd4, 0xdc, 0xca], | |
186 | [0x5c, 0x73, 0x33, 0x6a, 0x76, 0xd8, 0xbf, 0x9a], | |
187 | [0xd0, 0xa7, 0x04, 0x53, 0x6b, 0xa9, 0x3e, 0x0e], | |
188 | [0x92, 0x59, 0x58, 0xfc, 0xd6, 0x42, 0x0c, 0xad], | |
189 | [0xa9, 0x15, 0xc2, 0x9b, 0xc8, 0x06, 0x73, 0x18], | |
190 | [0x95, 0x2b, 0x79, 0xf3, 0xbc, 0x0a, 0xa6, 0xd4], | |
191 | [0xf2, 0x1d, 0xf2, 0xe4, 0x1d, 0x45, 0x35, 0xf9], | |
192 | [0x87, 0x57, 0x75, 0x19, 0x04, 0x8f, 0x53, 0xa9], | |
193 | [0x10, 0xa5, 0x6c, 0xf5, 0xdf, 0xcd, 0x9a, 0xdb], | |
194 | [0xeb, 0x75, 0x09, 0x5c, 0xcd, 0x98, 0x6c, 0xd0], | |
195 | [0x51, 0xa9, 0xcb, 0x9e, 0xcb, 0xa3, 0x12, 0xe6], | |
196 | [0x96, 0xaf, 0xad, 0xfc, 0x2c, 0xe6, 0x66, 0xc7], | |
197 | [0x72, 0xfe, 0x52, 0x97, 0x5a, 0x43, 0x64, 0xee], | |
198 | [0x5a, 0x16, 0x45, 0xb2, 0x76, 0xd5, 0x92, 0xa1], | |
199 | [0xb2, 0x74, 0xcb, 0x8e, 0xbf, 0x87, 0x87, 0x0a], | |
200 | [0x6f, 0x9b, 0xb4, 0x20, 0x3d, 0xe7, 0xb3, 0x81], | |
201 | [0xea, 0xec, 0xb2, 0xa3, 0x0b, 0x22, 0xa8, 0x7f], | |
202 | [0x99, 0x24, 0xa4, 0x3c, 0xc1, 0x31, 0x57, 0x24], | |
203 | [0xbd, 0x83, 0x8d, 0x3a, 0xaf, 0xbf, 0x8d, 0xb7], | |
204 | [0x0b, 0x1a, 0x2a, 0x32, 0x65, 0xd5, 0x1a, 0xea], | |
205 | [0x13, 0x50, 0x79, 0xa3, 0x23, 0x1c, 0xe6, 0x60], | |
206 | [0x93, 0x2b, 0x28, 0x46, 0xe4, 0xd7, 0x06, 0x66], | |
207 | [0xe1, 0x91, 0x5f, 0x5c, 0xb1, 0xec, 0xa4, 0x6c], | |
208 | [0xf3, 0x25, 0x96, 0x5c, 0xa1, 0x6d, 0x62, 0x9f], | |
209 | [0x57, 0x5f, 0xf2, 0x8e, 0x60, 0x38, 0x1b, 0xe5], | |
210 | [0x72, 0x45, 0x06, 0xeb, 0x4c, 0x32, 0x8a, 0x95], | |
1a4d82fc JJ |
211 | ]; |
212 | ||
c34b1796 AL |
213 | let k0 = 0x_07_06_05_04_03_02_01_00; |
214 | let k1 = 0x_0f_0e_0d_0c_0b_0a_09_08; | |
1a4d82fc JJ |
215 | let mut buf = Vec::new(); |
216 | let mut t = 0; | |
0531ce1d | 217 | let mut state_inc = SipHasher::new_with_keys(k0, k1); |
1a4d82fc JJ |
218 | |
219 | while t < 64 { | |
1a4d82fc | 220 | let vec = u8to64_le!(vecs[t], 0); |
0531ce1d | 221 | let out = hash_with(SipHasher::new_with_keys(k0, k1), &Bytes(&buf)); |
1a4d82fc JJ |
222 | assert_eq!(vec, out); |
223 | ||
0531ce1d | 224 | let full = hash_with(SipHasher::new_with_keys(k0, k1), &Bytes(&buf)); |
c1a9b12d | 225 | let i = state_inc.finish(); |
1a4d82fc | 226 | |
c1a9b12d SL |
227 | assert_eq!(full, i); |
228 | assert_eq!(full, vec); | |
1a4d82fc JJ |
229 | |
230 | buf.push(t as u8); | |
c1a9b12d | 231 | Hasher::write(&mut state_inc, &[t as u8]); |
1a4d82fc JJ |
232 | |
233 | t += 1; | |
234 | } | |
235 | } | |
abe05a73 XL |
236 | |
237 | #[test] | |
238 | #[cfg(target_pointer_width = "32")] | |
c1a9b12d | 239 | fn test_hash_usize() { |
1a4d82fc | 240 | let val = 0xdeadbeef_deadbeef_u64; |
c1a9b12d SL |
241 | assert!(hash(&(val as u64)) != hash(&(val as usize))); |
242 | assert_eq!(hash(&(val as u32)), hash(&(val as usize))); | |
1a4d82fc | 243 | } |
abe05a73 XL |
244 | |
245 | #[test] | |
246 | #[cfg(target_pointer_width = "64")] | |
c1a9b12d | 247 | fn test_hash_usize() { |
1a4d82fc | 248 | let val = 0xdeadbeef_deadbeef_u64; |
c1a9b12d SL |
249 | assert_eq!(hash(&(val as u64)), hash(&(val as usize))); |
250 | assert!(hash(&(val as u32)) != hash(&(val as usize))); | |
1a4d82fc | 251 | } |
1a4d82fc JJ |
252 | |
253 | #[test] | |
254 | fn test_hash_idempotent() { | |
255 | let val64 = 0xdeadbeef_deadbeef_u64; | |
256 | assert_eq!(hash(&val64), hash(&val64)); | |
257 | let val32 = 0xdeadbeef_u32; | |
258 | assert_eq!(hash(&val32), hash(&val32)); | |
259 | } | |
260 | ||
261 | #[test] | |
262 | fn test_hash_no_bytes_dropped_64() { | |
263 | let val = 0xdeadbeef_deadbeef_u64; | |
264 | ||
265 | assert!(hash(&val) != hash(&zero_byte(val, 0))); | |
266 | assert!(hash(&val) != hash(&zero_byte(val, 1))); | |
267 | assert!(hash(&val) != hash(&zero_byte(val, 2))); | |
268 | assert!(hash(&val) != hash(&zero_byte(val, 3))); | |
269 | assert!(hash(&val) != hash(&zero_byte(val, 4))); | |
270 | assert!(hash(&val) != hash(&zero_byte(val, 5))); | |
271 | assert!(hash(&val) != hash(&zero_byte(val, 6))); | |
272 | assert!(hash(&val) != hash(&zero_byte(val, 7))); | |
273 | ||
c1a9b12d | 274 | fn zero_byte(val: u64, byte: usize) -> u64 { |
1a4d82fc JJ |
275 | assert!(byte < 8); |
276 | val & !(0xff << (byte * 8)) | |
277 | } | |
278 | } | |
279 | ||
280 | #[test] | |
281 | fn test_hash_no_bytes_dropped_32() { | |
282 | let val = 0xdeadbeef_u32; | |
283 | ||
284 | assert!(hash(&val) != hash(&zero_byte(val, 0))); | |
285 | assert!(hash(&val) != hash(&zero_byte(val, 1))); | |
286 | assert!(hash(&val) != hash(&zero_byte(val, 2))); | |
287 | assert!(hash(&val) != hash(&zero_byte(val, 3))); | |
288 | ||
c1a9b12d | 289 | fn zero_byte(val: u32, byte: usize) -> u32 { |
1a4d82fc JJ |
290 | assert!(byte < 4); |
291 | val & !(0xff << (byte * 8)) | |
292 | } | |
293 | } | |
294 | ||
295 | #[test] | |
296 | fn test_hash_no_concat_alias() { | |
297 | let s = ("aa", "bb"); | |
298 | let t = ("aabb", ""); | |
299 | let u = ("a", "abb"); | |
300 | ||
301 | assert!(s != t && t != u); | |
302 | assert!(hash(&s) != hash(&t) && hash(&s) != hash(&u)); | |
303 | ||
c1a9b12d SL |
304 | let u = [1, 0, 0, 0]; |
305 | let v = (&u[..1], &u[1..3], &u[3..]); | |
306 | let w = (&u[..], &u[4..4], &u[4..4]); | |
1a4d82fc JJ |
307 | |
308 | assert!(v != w); | |
309 | assert!(hash(&v) != hash(&w)); | |
310 | } | |
311 | ||
c30ab7b3 SL |
312 | #[test] |
313 | fn test_write_short_works() { | |
314 | let test_usize = 0xd0c0b0a0usize; | |
0531ce1d | 315 | let mut h1 = SipHasher::new(); |
c30ab7b3 SL |
316 | h1.write_usize(test_usize); |
317 | h1.write(b"bytes"); | |
318 | h1.write(b"string"); | |
319 | h1.write_u8(0xFFu8); | |
320 | h1.write_u8(0x01u8); | |
0531ce1d | 321 | let mut h2 = SipHasher::new(); |
c30ab7b3 | 322 | h2.write(unsafe { |
60c5eb7d | 323 | slice::from_raw_parts(&test_usize as *const _ as *const u8, mem::size_of::<usize>()) |
c30ab7b3 SL |
324 | }); |
325 | h2.write(b"bytes"); | |
326 | h2.write(b"string"); | |
327 | h2.write(&[0xFFu8, 0x01u8]); | |
328 | assert_eq!(h1.finish(), h2.finish()); | |
329 | } |