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9346a6ac | 1 | macro_rules! int_module { ($T:ident, $T_i:ident) => ( |
1a4d82fc JJ |
2 | #[cfg(test)] |
3 | mod tests { | |
4 | use core::$T_i::*; | |
c34b1796 | 5 | use core::isize; |
1a4d82fc | 6 | use core::ops::{Shl, Shr, Not, BitXor, BitAnd, BitOr}; |
7453a54e SL |
7 | use core::mem; |
8 | ||
48663c56 | 9 | use crate::num; |
1a4d82fc JJ |
10 | |
11 | #[test] | |
12 | fn test_overflows() { | |
13 | assert!(MAX > 0); | |
14 | assert!(MIN <= 0); | |
532ac7d7 | 15 | assert_eq!(MIN + MAX + 1, 0); |
1a4d82fc JJ |
16 | } |
17 | ||
18 | #[test] | |
19 | fn test_num() { | |
20 | num::test_num(10 as $T, 2 as $T); | |
21 | } | |
22 | ||
83c7162d | 23 | #[test] |
0731742a | 24 | fn test_rem_euclid() { |
532ac7d7 | 25 | assert_eq!((-1 as $T).rem_euclid(MIN), MAX); |
83c7162d XL |
26 | } |
27 | ||
1a4d82fc JJ |
28 | #[test] |
29 | pub fn test_abs() { | |
532ac7d7 XL |
30 | assert_eq!((1 as $T).abs(), 1 as $T); |
31 | assert_eq!((0 as $T).abs(), 0 as $T); | |
32 | assert_eq!((-1 as $T).abs(), 1 as $T); | |
1a4d82fc JJ |
33 | } |
34 | ||
35 | #[test] | |
36 | fn test_signum() { | |
532ac7d7 XL |
37 | assert_eq!((1 as $T).signum(), 1 as $T); |
38 | assert_eq!((0 as $T).signum(), 0 as $T); | |
39 | assert_eq!((-0 as $T).signum(), 0 as $T); | |
40 | assert_eq!((-1 as $T).signum(), -1 as $T); | |
1a4d82fc JJ |
41 | } |
42 | ||
43 | #[test] | |
44 | fn test_is_positive() { | |
45 | assert!((1 as $T).is_positive()); | |
46 | assert!(!(0 as $T).is_positive()); | |
47 | assert!(!(-0 as $T).is_positive()); | |
48 | assert!(!(-1 as $T).is_positive()); | |
49 | } | |
50 | ||
51 | #[test] | |
52 | fn test_is_negative() { | |
53 | assert!(!(1 as $T).is_negative()); | |
54 | assert!(!(0 as $T).is_negative()); | |
55 | assert!(!(-0 as $T).is_negative()); | |
56 | assert!((-1 as $T).is_negative()); | |
57 | } | |
58 | ||
59 | #[test] | |
60 | fn test_bitwise_operators() { | |
532ac7d7 XL |
61 | assert_eq!(0b1110 as $T, (0b1100 as $T).bitor(0b1010 as $T)); |
62 | assert_eq!(0b1000 as $T, (0b1100 as $T).bitand(0b1010 as $T)); | |
63 | assert_eq!(0b0110 as $T, (0b1100 as $T).bitxor(0b1010 as $T)); | |
64 | assert_eq!(0b1110 as $T, (0b0111 as $T).shl(1)); | |
65 | assert_eq!(0b0111 as $T, (0b1110 as $T).shr(1)); | |
66 | assert_eq!(-(0b11 as $T) - (1 as $T), (0b11 as $T).not()); | |
1a4d82fc JJ |
67 | } |
68 | ||
c34b1796 AL |
69 | const A: $T = 0b0101100; |
70 | const B: $T = 0b0100001; | |
71 | const C: $T = 0b1111001; | |
1a4d82fc | 72 | |
c34b1796 AL |
73 | const _0: $T = 0; |
74 | const _1: $T = !0; | |
1a4d82fc JJ |
75 | |
76 | #[test] | |
77 | fn test_count_ones() { | |
532ac7d7 XL |
78 | assert_eq!(A.count_ones(), 3); |
79 | assert_eq!(B.count_ones(), 2); | |
80 | assert_eq!(C.count_ones(), 5); | |
1a4d82fc JJ |
81 | } |
82 | ||
83 | #[test] | |
84 | fn test_count_zeros() { | |
7453a54e | 85 | let bits = mem::size_of::<$T>() * 8; |
532ac7d7 XL |
86 | assert_eq!(A.count_zeros(), bits as u32 - 3); |
87 | assert_eq!(B.count_zeros(), bits as u32 - 2); | |
88 | assert_eq!(C.count_zeros(), bits as u32 - 5); | |
1a4d82fc JJ |
89 | } |
90 | ||
91 | #[test] | |
92 | fn test_rotate() { | |
93 | assert_eq!(A.rotate_left(6).rotate_right(2).rotate_right(4), A); | |
94 | assert_eq!(B.rotate_left(3).rotate_left(2).rotate_right(5), B); | |
95 | assert_eq!(C.rotate_left(6).rotate_right(2).rotate_right(4), C); | |
96 | ||
97 | // Rotating these should make no difference | |
98 | // | |
99 | // We test using 124 bits because to ensure that overlong bit shifts do | |
100 | // not cause undefined behaviour. See #10183. | |
101 | assert_eq!(_0.rotate_left(124), _0); | |
102 | assert_eq!(_1.rotate_left(124), _1); | |
103 | assert_eq!(_0.rotate_right(124), _0); | |
104 | assert_eq!(_1.rotate_right(124), _1); | |
105 | ||
106 | // Rotating by 0 should have no effect | |
107 | assert_eq!(A.rotate_left(0), A); | |
108 | assert_eq!(B.rotate_left(0), B); | |
109 | assert_eq!(C.rotate_left(0), C); | |
110 | // Rotating by a multiple of word size should also have no effect | |
111 | assert_eq!(A.rotate_left(64), A); | |
112 | assert_eq!(B.rotate_left(64), B); | |
113 | assert_eq!(C.rotate_left(64), C); | |
114 | } | |
115 | ||
116 | #[test] | |
117 | fn test_swap_bytes() { | |
118 | assert_eq!(A.swap_bytes().swap_bytes(), A); | |
119 | assert_eq!(B.swap_bytes().swap_bytes(), B); | |
120 | assert_eq!(C.swap_bytes().swap_bytes(), C); | |
121 | ||
122 | // Swapping these should make no difference | |
123 | assert_eq!(_0.swap_bytes(), _0); | |
124 | assert_eq!(_1.swap_bytes(), _1); | |
125 | } | |
126 | ||
127 | #[test] | |
128 | fn test_le() { | |
9346a6ac AL |
129 | assert_eq!($T::from_le(A.to_le()), A); |
130 | assert_eq!($T::from_le(B.to_le()), B); | |
131 | assert_eq!($T::from_le(C.to_le()), C); | |
132 | assert_eq!($T::from_le(_0), _0); | |
133 | assert_eq!($T::from_le(_1), _1); | |
1a4d82fc JJ |
134 | assert_eq!(_0.to_le(), _0); |
135 | assert_eq!(_1.to_le(), _1); | |
136 | } | |
137 | ||
138 | #[test] | |
139 | fn test_be() { | |
9346a6ac AL |
140 | assert_eq!($T::from_be(A.to_be()), A); |
141 | assert_eq!($T::from_be(B.to_be()), B); | |
142 | assert_eq!($T::from_be(C.to_be()), C); | |
143 | assert_eq!($T::from_be(_0), _0); | |
144 | assert_eq!($T::from_be(_1), _1); | |
1a4d82fc JJ |
145 | assert_eq!(_0.to_be(), _0); |
146 | assert_eq!(_1.to_be(), _1); | |
147 | } | |
148 | ||
149 | #[test] | |
150 | fn test_signed_checked_div() { | |
532ac7d7 XL |
151 | assert_eq!((10 as $T).checked_div(2), Some(5)); |
152 | assert_eq!((5 as $T).checked_div(0), None); | |
153 | assert_eq!(isize::MIN.checked_div(-1), None); | |
1a4d82fc JJ |
154 | } |
155 | ||
48663c56 XL |
156 | #[test] |
157 | fn test_saturating_abs() { | |
158 | assert_eq!((0 as $T).saturating_abs(), 0); | |
159 | assert_eq!((123 as $T).saturating_abs(), 123); | |
160 | assert_eq!((-123 as $T).saturating_abs(), 123); | |
161 | assert_eq!((MAX - 2).saturating_abs(), MAX - 2); | |
162 | assert_eq!((MAX - 1).saturating_abs(), MAX - 1); | |
163 | assert_eq!(MAX.saturating_abs(), MAX); | |
164 | assert_eq!((MIN + 2).saturating_abs(), MAX - 1); | |
165 | assert_eq!((MIN + 1).saturating_abs(), MAX); | |
166 | assert_eq!(MIN.saturating_abs(), MAX); | |
167 | } | |
168 | ||
169 | #[test] | |
170 | fn test_saturating_neg() { | |
171 | assert_eq!((0 as $T).saturating_neg(), 0); | |
172 | assert_eq!((123 as $T).saturating_neg(), -123); | |
173 | assert_eq!((-123 as $T).saturating_neg(), 123); | |
174 | assert_eq!((MAX - 2).saturating_neg(), MIN + 3); | |
175 | assert_eq!((MAX - 1).saturating_neg(), MIN + 2); | |
176 | assert_eq!(MAX.saturating_neg(), MIN + 1); | |
177 | assert_eq!((MIN + 2).saturating_neg(), MAX - 1); | |
178 | assert_eq!((MIN + 1).saturating_neg(), MAX); | |
179 | assert_eq!(MIN.saturating_neg(), MAX); | |
180 | } | |
181 | ||
1a4d82fc JJ |
182 | #[test] |
183 | fn test_from_str() { | |
184 | fn from_str<T: ::std::str::FromStr>(t: &str) -> Option<T> { | |
85aaf69f | 185 | ::std::str::FromStr::from_str(t).ok() |
1a4d82fc JJ |
186 | } |
187 | assert_eq!(from_str::<$T>("0"), Some(0 as $T)); | |
188 | assert_eq!(from_str::<$T>("3"), Some(3 as $T)); | |
189 | assert_eq!(from_str::<$T>("10"), Some(10 as $T)); | |
190 | assert_eq!(from_str::<i32>("123456789"), Some(123456789 as i32)); | |
191 | assert_eq!(from_str::<$T>("00100"), Some(100 as $T)); | |
192 | ||
193 | assert_eq!(from_str::<$T>("-1"), Some(-1 as $T)); | |
194 | assert_eq!(from_str::<$T>("-3"), Some(-3 as $T)); | |
195 | assert_eq!(from_str::<$T>("-10"), Some(-10 as $T)); | |
196 | assert_eq!(from_str::<i32>("-123456789"), Some(-123456789 as i32)); | |
197 | assert_eq!(from_str::<$T>("-00100"), Some(-100 as $T)); | |
198 | ||
199 | assert_eq!(from_str::<$T>(""), None); | |
200 | assert_eq!(from_str::<$T>(" "), None); | |
201 | assert_eq!(from_str::<$T>("x"), None); | |
202 | } | |
203 | ||
204 | #[test] | |
205 | fn test_from_str_radix() { | |
9346a6ac AL |
206 | assert_eq!($T::from_str_radix("123", 10), Ok(123 as $T)); |
207 | assert_eq!($T::from_str_radix("1001", 2), Ok(9 as $T)); | |
208 | assert_eq!($T::from_str_radix("123", 8), Ok(83 as $T)); | |
209 | assert_eq!(i32::from_str_radix("123", 16), Ok(291 as i32)); | |
210 | assert_eq!(i32::from_str_radix("ffff", 16), Ok(65535 as i32)); | |
211 | assert_eq!(i32::from_str_radix("FFFF", 16), Ok(65535 as i32)); | |
212 | assert_eq!($T::from_str_radix("z", 36), Ok(35 as $T)); | |
213 | assert_eq!($T::from_str_radix("Z", 36), Ok(35 as $T)); | |
214 | ||
215 | assert_eq!($T::from_str_radix("-123", 10), Ok(-123 as $T)); | |
216 | assert_eq!($T::from_str_radix("-1001", 2), Ok(-9 as $T)); | |
217 | assert_eq!($T::from_str_radix("-123", 8), Ok(-83 as $T)); | |
218 | assert_eq!(i32::from_str_radix("-123", 16), Ok(-291 as i32)); | |
219 | assert_eq!(i32::from_str_radix("-ffff", 16), Ok(-65535 as i32)); | |
220 | assert_eq!(i32::from_str_radix("-FFFF", 16), Ok(-65535 as i32)); | |
221 | assert_eq!($T::from_str_radix("-z", 36), Ok(-35 as $T)); | |
222 | assert_eq!($T::from_str_radix("-Z", 36), Ok(-35 as $T)); | |
223 | ||
224 | assert_eq!($T::from_str_radix("Z", 35).ok(), None::<$T>); | |
225 | assert_eq!($T::from_str_radix("-9", 2).ok(), None::<$T>); | |
1a4d82fc | 226 | } |
c34b1796 AL |
227 | |
228 | #[test] | |
229 | fn test_pow() { | |
230 | let mut r = 2 as $T; | |
231 | ||
54a0048b SL |
232 | assert_eq!(r.pow(2), 4 as $T); |
233 | assert_eq!(r.pow(0), 1 as $T); | |
c34b1796 | 234 | r = -2 as $T; |
54a0048b SL |
235 | assert_eq!(r.pow(2), 4 as $T); |
236 | assert_eq!(r.pow(3), -8 as $T); | |
c34b1796 | 237 | } |
1a4d82fc JJ |
238 | } |
239 | ||
240 | )} |