| 1 | #[cfg(all(target_family = "wasm", not(target_os = "wasi")))] |
| 2 | use wasm_bindgen_test::wasm_bindgen_test as test; |
| 3 | |
| 4 | #[cfg(all(target_family = "wasm", not(target_os = "wasi")))] |
| 5 | wasm_bindgen_test::wasm_bindgen_test_configure!(run_in_browser); |
| 6 | |
| 7 | #[test] |
| 8 | fn bool() { |
| 9 | for x in &[false, true] { |
| 10 | while fastrand::bool() != *x {} |
| 11 | } |
| 12 | } |
| 13 | |
| 14 | #[test] |
| 15 | fn u8() { |
| 16 | for x in 0..10 { |
| 17 | while fastrand::u8(..10) != x {} |
| 18 | } |
| 19 | |
| 20 | for x in 200..=u8::MAX { |
| 21 | while fastrand::u8(200..) != x {} |
| 22 | } |
| 23 | } |
| 24 | |
| 25 | #[test] |
| 26 | fn i8() { |
| 27 | for x in -128..-120 { |
| 28 | while fastrand::i8(..-120) != x {} |
| 29 | } |
| 30 | |
| 31 | for x in 120..=127 { |
| 32 | while fastrand::i8(120..) != x {} |
| 33 | } |
| 34 | } |
| 35 | |
| 36 | #[test] |
| 37 | fn u32() { |
| 38 | for n in 1u32..10_000 { |
| 39 | let n = n.wrapping_mul(n); |
| 40 | let n = n.wrapping_mul(n); |
| 41 | if n != 0 { |
| 42 | for _ in 0..1000 { |
| 43 | assert!(fastrand::u32(..n) < n); |
| 44 | } |
| 45 | } |
| 46 | } |
| 47 | } |
| 48 | |
| 49 | #[test] |
| 50 | fn u64() { |
| 51 | for n in 1u64..10_000 { |
| 52 | let n = n.wrapping_mul(n); |
| 53 | let n = n.wrapping_mul(n); |
| 54 | let n = n.wrapping_mul(n); |
| 55 | if n != 0 { |
| 56 | for _ in 0..1000 { |
| 57 | assert!(fastrand::u64(..n) < n); |
| 58 | } |
| 59 | } |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | #[test] |
| 64 | fn u128() { |
| 65 | for n in 1u128..10_000 { |
| 66 | let n = n.wrapping_mul(n); |
| 67 | let n = n.wrapping_mul(n); |
| 68 | let n = n.wrapping_mul(n); |
| 69 | let n = n.wrapping_mul(n); |
| 70 | if n != 0 { |
| 71 | for _ in 0..1000 { |
| 72 | assert!(fastrand::u128(..n) < n); |
| 73 | } |
| 74 | } |
| 75 | } |
| 76 | } |
| 77 | |
| 78 | #[test] |
| 79 | fn f32() { |
| 80 | let mut r = fastrand::Rng::with_seed(0); |
| 81 | let tiny = (-24.0f32).exp2(); |
| 82 | let mut count_tiny_nonzero = 0; |
| 83 | let mut count_top_half = 0; |
| 84 | for _ in 0..100_000_000 { |
| 85 | let x = r.f32(); |
| 86 | assert!((0.0..1.0).contains(&x)); |
| 87 | if x > 0.0 && x < tiny { |
| 88 | count_tiny_nonzero += 1; |
| 89 | } else if x > 0.5 { |
| 90 | count_top_half += 1; |
| 91 | } |
| 92 | } |
| 93 | assert!(count_top_half >= 49_000_000); |
| 94 | assert!(count_tiny_nonzero > 0); |
| 95 | } |
| 96 | |
| 97 | #[test] |
| 98 | fn f32_inclusive() { |
| 99 | let mut r = fastrand::Rng::with_seed(0); |
| 100 | let tiny = (-24.0f32).exp2(); |
| 101 | let mut count_top_half = 0; |
| 102 | let mut count_tiny_nonzero = 0; |
| 103 | let mut count_one = 0; |
| 104 | for _ in 0..100_000_000 { |
| 105 | let x = r.f32_inclusive(); |
| 106 | assert!((0.0..=1.0).contains(&x)); |
| 107 | if x == 1.0 { |
| 108 | count_one += 1; |
| 109 | } else if x > 0.5 { |
| 110 | count_top_half += 1; |
| 111 | } else if x > 0.0 && x < tiny { |
| 112 | count_tiny_nonzero += 1; |
| 113 | } |
| 114 | } |
| 115 | assert!(count_top_half >= 49_000_000); |
| 116 | assert!(count_one > 0); |
| 117 | assert!(count_tiny_nonzero > 0); |
| 118 | } |
| 119 | |
| 120 | #[test] |
| 121 | fn f64() { |
| 122 | let mut r = fastrand::Rng::with_seed(0); |
| 123 | let mut count_top_half = 0; |
| 124 | for _ in 0..100_000_000 { |
| 125 | let x = r.f64(); |
| 126 | assert!((0.0..1.0).contains(&x)); |
| 127 | if x > 0.5 { |
| 128 | count_top_half += 1; |
| 129 | } |
| 130 | } |
| 131 | assert!(count_top_half >= 49_000_000); |
| 132 | } |
| 133 | |
| 134 | #[test] |
| 135 | fn f64_inclusive() { |
| 136 | let mut r = fastrand::Rng::with_seed(0); |
| 137 | let mut count_top_half = 0; |
| 138 | for _ in 0..100_000_000 { |
| 139 | let x = r.f64_inclusive(); |
| 140 | assert!((0.0..=1.0).contains(&x)); |
| 141 | if x > 0.5 { |
| 142 | count_top_half += 1; |
| 143 | } |
| 144 | } |
| 145 | assert!(count_top_half >= 49_000_000); |
| 146 | } |
| 147 | |
| 148 | #[test] |
| 149 | fn digit() { |
| 150 | for base in 1..36 { |
| 151 | let result = fastrand::digit(base); |
| 152 | assert!(result.is_ascii_digit() || result.is_ascii_lowercase()); |
| 153 | } |
| 154 | } |
| 155 | |
| 156 | #[test] |
| 157 | fn global_rng_choice() { |
| 158 | let items = [1, 4, 9, 5, 2, 3, 6, 7, 8, 0]; |
| 159 | |
| 160 | for item in &items { |
| 161 | while fastrand::choice(&items).unwrap() != item {} |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | #[test] |
| 166 | fn global_rng_alphabetic() { |
| 167 | for _ in 0..1000 { |
| 168 | let result = fastrand::alphabetic(); |
| 169 | assert!(result.is_ascii_alphabetic()) |
| 170 | } |
| 171 | } |
| 172 | |
| 173 | #[test] |
| 174 | fn global_rng_lowercase() { |
| 175 | for _ in 0..1000 { |
| 176 | let result = fastrand::lowercase(); |
| 177 | assert!(result.is_ascii_lowercase()) |
| 178 | } |
| 179 | } |
| 180 | |
| 181 | #[test] |
| 182 | fn global_rng_uppercase() { |
| 183 | for _ in 0..1000 { |
| 184 | let result = fastrand::uppercase(); |
| 185 | assert!(result.is_ascii_uppercase()) |
| 186 | } |
| 187 | } |
| 188 | |
| 189 | #[test] |
| 190 | fn fill() { |
| 191 | let mut r = fastrand::Rng::new(); |
| 192 | let mut a = [0u8; 64]; |
| 193 | let mut b = [0u8; 64]; |
| 194 | |
| 195 | r.fill(&mut a); |
| 196 | r.fill(&mut b); |
| 197 | |
| 198 | assert_ne!(a, b); |
| 199 | |
| 200 | let mut a = [0u8; 9]; |
| 201 | let mut b = [0u8; 9]; |
| 202 | |
| 203 | r.fill(&mut a); |
| 204 | r.fill(&mut b); |
| 205 | |
| 206 | assert_ne!(a, b); |
| 207 | } |
| 208 | |
| 209 | #[test] |
| 210 | fn global_rng_fill() { |
| 211 | let mut a = [0u8; 64]; |
| 212 | let mut b = [0u8; 64]; |
| 213 | |
| 214 | fastrand::fill(&mut a); |
| 215 | fastrand::fill(&mut b); |
| 216 | |
| 217 | assert_ne!(a, b); |
| 218 | } |
| 219 | |
| 220 | #[test] |
| 221 | fn rng() { |
| 222 | let mut r = fastrand::Rng::new(); |
| 223 | |
| 224 | assert_ne!(r.u64(..), r.u64(..)); |
| 225 | |
| 226 | r.seed(7); |
| 227 | let a = r.u64(..); |
| 228 | r.seed(7); |
| 229 | let b = r.u64(..); |
| 230 | assert_eq!(a, b); |
| 231 | } |
| 232 | |
| 233 | #[test] |
| 234 | fn rng_init() { |
| 235 | let mut a = fastrand::Rng::new(); |
| 236 | let mut b = fastrand::Rng::new(); |
| 237 | assert_ne!(a.u64(..), b.u64(..)); |
| 238 | |
| 239 | a.seed(7); |
| 240 | b.seed(7); |
| 241 | assert_eq!(a.u64(..), b.u64(..)); |
| 242 | } |
| 243 | |
| 244 | #[test] |
| 245 | fn rng_digit() { |
| 246 | let mut rng = fastrand::Rng::new(); |
| 247 | for base in 1..36 { |
| 248 | let result = rng.digit(base); |
| 249 | assert!(result.is_ascii_digit() || result.is_ascii_lowercase()); |
| 250 | } |
| 251 | } |
| 252 | |
| 253 | #[test] |
| 254 | #[should_panic] |
| 255 | fn rng_digit_panic_1() { |
| 256 | let mut rng = fastrand::Rng::new(); |
| 257 | let _result = rng.digit(0); |
| 258 | } |
| 259 | |
| 260 | #[test] |
| 261 | #[should_panic] |
| 262 | fn rng_digit_panic_2() { |
| 263 | let mut rng = fastrand::Rng::new(); |
| 264 | let base = rng.u32(37..); |
| 265 | let _result = rng.digit(base); |
| 266 | } |
| 267 | |
| 268 | #[test] |
| 269 | fn with_seed() { |
| 270 | let mut a = fastrand::Rng::with_seed(7); |
| 271 | let mut b = fastrand::Rng::new(); |
| 272 | b.seed(7); |
| 273 | assert_eq!(a.u64(..), b.u64(..)); |
| 274 | } |
| 275 | |
| 276 | #[test] |
| 277 | fn choose_multiple() { |
| 278 | let mut a = fastrand::Rng::new(); |
| 279 | let mut elements = (0..20).collect::<Vec<_>>(); |
| 280 | |
| 281 | while !elements.is_empty() { |
| 282 | let chosen = a.choose_multiple(0..20, 5); |
| 283 | for &x in &chosen { |
| 284 | elements.retain(|&y| y != x); |
| 285 | } |
| 286 | } |
| 287 | |
| 288 | let empty_elements: Vec<i32> = Vec::new(); |
| 289 | let empty_result = a.choose_multiple(empty_elements, 5); |
| 290 | assert!(empty_result.is_empty()); |
| 291 | } |
| 292 | |
| 293 | #[test] |
| 294 | fn choice() { |
| 295 | let items = [1, 4, 9, 5, 2, 3, 6, 7, 8, 0]; |
| 296 | let mut r = fastrand::Rng::new(); |
| 297 | |
| 298 | for item in &items { |
| 299 | while r.choice(&items).unwrap() != item {} |
| 300 | } |
| 301 | } |
| 302 | |
| 303 | #[test] |
| 304 | fn choice_empty() { |
| 305 | let mut rng = fastrand::Rng::new(); |
| 306 | let data: Vec<i32> = Vec::new(); |
| 307 | let result = rng.choice(data); |
| 308 | assert!(result.is_none()); |
| 309 | } |
| 310 | |
| 311 | #[test] |
| 312 | fn lowercase() { |
| 313 | let mut rng = fastrand::Rng::new(); |
| 314 | for _ in 0..1000 { |
| 315 | let result = rng.lowercase(); |
| 316 | assert!(result.is_ascii_lowercase()) |
| 317 | } |
| 318 | } |
| 319 | |
| 320 | #[test] |
| 321 | fn alphabetic() { |
| 322 | let mut rng = fastrand::Rng::new(); |
| 323 | for _ in 0..1000 { |
| 324 | let result = rng.alphabetic(); |
| 325 | assert!(result.is_ascii_alphabetic()) |
| 326 | } |
| 327 | } |
| 328 | |
| 329 | #[test] |
| 330 | fn uppercase() { |
| 331 | let mut rng = fastrand::Rng::new(); |
| 332 | for _ in 0..1000 { |
| 333 | let result = rng.uppercase(); |
| 334 | assert!(result.is_ascii_uppercase()) |
| 335 | } |
| 336 | } |
| 337 | |
| 338 | #[test] |
| 339 | #[should_panic] |
| 340 | fn char_panic() { |
| 341 | let mut rng = fastrand::Rng::new(); |
| 342 | let _result = rng.char('z'..='a'); |
| 343 | } |
| 344 | |
| 345 | #[test] |
| 346 | fn char() { |
| 347 | use core::ops::Bound; |
| 348 | let mut rng = fastrand::Rng::new(); |
| 349 | |
| 350 | let result = rng.char(..); |
| 351 | assert!(result >= 0 as char && result <= core::char::MAX); |
| 352 | |
| 353 | let result = rng.char((Bound::Excluded('0'), Bound::Excluded('9'))); |
| 354 | for _ in 0..1000 { |
| 355 | assert!(result > '0' && result < '9'); |
| 356 | } |
| 357 | } |
| 358 | |
amadan