| // Copyright 2014 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| macro_rules! int_module { ($T:ident, $T_i:ident) => ( |
| #[cfg(test)] |
| mod tests { |
| use core::$T_i::*; |
| use core::isize; |
| use core::ops::{Shl, Shr, Not, BitXor, BitAnd, BitOr}; |
| use num; |
| |
| #[test] |
| fn test_overflows() { |
| assert!(MAX > 0); |
| assert!(MIN <= 0); |
| assert!(MIN + MAX + 1 == 0); |
| } |
| |
| #[test] |
| fn test_num() { |
| num::test_num(10 as $T, 2 as $T); |
| } |
| |
| #[test] |
| pub fn test_abs() { |
| assert!((1 as $T).abs() == 1 as $T); |
| assert!((0 as $T).abs() == 0 as $T); |
| assert!((-1 as $T).abs() == 1 as $T); |
| } |
| |
| #[test] |
| fn test_signum() { |
| assert!((1 as $T).signum() == 1 as $T); |
| assert!((0 as $T).signum() == 0 as $T); |
| assert!((-0 as $T).signum() == 0 as $T); |
| assert!((-1 as $T).signum() == -1 as $T); |
| } |
| |
| #[test] |
| fn test_is_positive() { |
| assert!((1 as $T).is_positive()); |
| assert!(!(0 as $T).is_positive()); |
| assert!(!(-0 as $T).is_positive()); |
| assert!(!(-1 as $T).is_positive()); |
| } |
| |
| #[test] |
| fn test_is_negative() { |
| assert!(!(1 as $T).is_negative()); |
| assert!(!(0 as $T).is_negative()); |
| assert!(!(-0 as $T).is_negative()); |
| assert!((-1 as $T).is_negative()); |
| } |
| |
| #[test] |
| fn test_bitwise_operators() { |
| assert!(0b1110 as $T == (0b1100 as $T).bitor(0b1010 as $T)); |
| assert!(0b1000 as $T == (0b1100 as $T).bitand(0b1010 as $T)); |
| assert!(0b0110 as $T == (0b1100 as $T).bitxor(0b1010 as $T)); |
| assert!(0b1110 as $T == (0b0111 as $T).shl(1)); |
| assert!(0b0111 as $T == (0b1110 as $T).shr(1)); |
| assert!(-(0b11 as $T) - (1 as $T) == (0b11 as $T).not()); |
| } |
| |
| const A: $T = 0b0101100; |
| const B: $T = 0b0100001; |
| const C: $T = 0b1111001; |
| |
| const _0: $T = 0; |
| const _1: $T = !0; |
| |
| #[test] |
| fn test_count_ones() { |
| assert!(A.count_ones() == 3); |
| assert!(B.count_ones() == 2); |
| assert!(C.count_ones() == 5); |
| } |
| |
| #[test] |
| fn test_count_zeros() { |
| assert!(A.count_zeros() == BITS as u32 - 3); |
| assert!(B.count_zeros() == BITS as u32 - 2); |
| assert!(C.count_zeros() == BITS as u32 - 5); |
| } |
| |
| #[test] |
| fn test_rotate() { |
| assert_eq!(A.rotate_left(6).rotate_right(2).rotate_right(4), A); |
| assert_eq!(B.rotate_left(3).rotate_left(2).rotate_right(5), B); |
| assert_eq!(C.rotate_left(6).rotate_right(2).rotate_right(4), C); |
| |
| // Rotating these should make no difference |
| // |
| // We test using 124 bits because to ensure that overlong bit shifts do |
| // not cause undefined behaviour. See #10183. |
| assert_eq!(_0.rotate_left(124), _0); |
| assert_eq!(_1.rotate_left(124), _1); |
| assert_eq!(_0.rotate_right(124), _0); |
| assert_eq!(_1.rotate_right(124), _1); |
| |
| // Rotating by 0 should have no effect |
| assert_eq!(A.rotate_left(0), A); |
| assert_eq!(B.rotate_left(0), B); |
| assert_eq!(C.rotate_left(0), C); |
| // Rotating by a multiple of word size should also have no effect |
| assert_eq!(A.rotate_left(64), A); |
| assert_eq!(B.rotate_left(64), B); |
| assert_eq!(C.rotate_left(64), C); |
| } |
| |
| #[test] |
| fn test_swap_bytes() { |
| assert_eq!(A.swap_bytes().swap_bytes(), A); |
| assert_eq!(B.swap_bytes().swap_bytes(), B); |
| assert_eq!(C.swap_bytes().swap_bytes(), C); |
| |
| // Swapping these should make no difference |
| assert_eq!(_0.swap_bytes(), _0); |
| assert_eq!(_1.swap_bytes(), _1); |
| } |
| |
| #[test] |
| fn test_le() { |
| assert_eq!($T::from_le(A.to_le()), A); |
| assert_eq!($T::from_le(B.to_le()), B); |
| assert_eq!($T::from_le(C.to_le()), C); |
| assert_eq!($T::from_le(_0), _0); |
| assert_eq!($T::from_le(_1), _1); |
| assert_eq!(_0.to_le(), _0); |
| assert_eq!(_1.to_le(), _1); |
| } |
| |
| #[test] |
| fn test_be() { |
| assert_eq!($T::from_be(A.to_be()), A); |
| assert_eq!($T::from_be(B.to_be()), B); |
| assert_eq!($T::from_be(C.to_be()), C); |
| assert_eq!($T::from_be(_0), _0); |
| assert_eq!($T::from_be(_1), _1); |
| assert_eq!(_0.to_be(), _0); |
| assert_eq!(_1.to_be(), _1); |
| } |
| |
| #[test] |
| fn test_signed_checked_div() { |
| assert!((10 as $T).checked_div(2) == Some(5)); |
| assert!((5 as $T).checked_div(0) == None); |
| assert!(isize::MIN.checked_div(-1) == None); |
| } |
| |
| #[test] |
| fn test_from_str() { |
| fn from_str<T: ::std::str::FromStr>(t: &str) -> Option<T> { |
| ::std::str::FromStr::from_str(t).ok() |
| } |
| assert_eq!(from_str::<$T>("0"), Some(0 as $T)); |
| assert_eq!(from_str::<$T>("3"), Some(3 as $T)); |
| assert_eq!(from_str::<$T>("10"), Some(10 as $T)); |
| assert_eq!(from_str::<i32>("123456789"), Some(123456789 as i32)); |
| assert_eq!(from_str::<$T>("00100"), Some(100 as $T)); |
| |
| assert_eq!(from_str::<$T>("-1"), Some(-1 as $T)); |
| assert_eq!(from_str::<$T>("-3"), Some(-3 as $T)); |
| assert_eq!(from_str::<$T>("-10"), Some(-10 as $T)); |
| assert_eq!(from_str::<i32>("-123456789"), Some(-123456789 as i32)); |
| assert_eq!(from_str::<$T>("-00100"), Some(-100 as $T)); |
| |
| assert_eq!(from_str::<$T>(""), None); |
| assert_eq!(from_str::<$T>(" "), None); |
| assert_eq!(from_str::<$T>("x"), None); |
| } |
| |
| #[test] |
| fn test_from_str_radix() { |
| assert_eq!($T::from_str_radix("123", 10), Ok(123 as $T)); |
| assert_eq!($T::from_str_radix("1001", 2), Ok(9 as $T)); |
| assert_eq!($T::from_str_radix("123", 8), Ok(83 as $T)); |
| assert_eq!(i32::from_str_radix("123", 16), Ok(291 as i32)); |
| assert_eq!(i32::from_str_radix("ffff", 16), Ok(65535 as i32)); |
| assert_eq!(i32::from_str_radix("FFFF", 16), Ok(65535 as i32)); |
| assert_eq!($T::from_str_radix("z", 36), Ok(35 as $T)); |
| assert_eq!($T::from_str_radix("Z", 36), Ok(35 as $T)); |
| |
| assert_eq!($T::from_str_radix("-123", 10), Ok(-123 as $T)); |
| assert_eq!($T::from_str_radix("-1001", 2), Ok(-9 as $T)); |
| assert_eq!($T::from_str_radix("-123", 8), Ok(-83 as $T)); |
| assert_eq!(i32::from_str_radix("-123", 16), Ok(-291 as i32)); |
| assert_eq!(i32::from_str_radix("-ffff", 16), Ok(-65535 as i32)); |
| assert_eq!(i32::from_str_radix("-FFFF", 16), Ok(-65535 as i32)); |
| assert_eq!($T::from_str_radix("-z", 36), Ok(-35 as $T)); |
| assert_eq!($T::from_str_radix("-Z", 36), Ok(-35 as $T)); |
| |
| assert_eq!($T::from_str_radix("Z", 35).ok(), None::<$T>); |
| assert_eq!($T::from_str_radix("-9", 2).ok(), None::<$T>); |
| } |
| |
| #[test] |
| fn test_pow() { |
| let mut r = 2 as $T; |
| |
| assert_eq!(r.pow(2u32), 4 as $T); |
| assert_eq!(r.pow(0u32), 1 as $T); |
| r = -2 as $T; |
| assert_eq!(r.pow(2u32), 4 as $T); |
| assert_eq!(r.pow(3u32), -8 as $T); |
| } |
| } |
| |
| )} |