xeos
/
num-traits
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

bigint: add tests for From implementations

This commit is contained in:
Oliver Middleton 2015-12-12 23:17:37 +00:00
parent 8e1c6a3c11
commit 9c7c995631
1 changed files with 72 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

75
src/bigint.rs
View File

@ -2412,7 +2412,7 @@ mod biguint_tests {
use std::i64;
use std::iter::repeat;
use std::str::FromStr;
use std::u64;
use std::{u8, u16, u32, u64, usize};
use rand::thread_rng;
use {Num, Zero, One, CheckedAdd, CheckedSub, CheckedMul, CheckedDiv};
@ -2907,6 +2907,24 @@ mod biguint_tests {
BigInt::from_biguint(Plus, BigUint::new(vec!(1,2,3))));
}
#[test]
fn test_convert_from_uint() {
macro_rules! check {
($ty:ident, $max:expr) => {
assert_eq!(BigUint::from($ty::zero()), BigUint::zero());
assert_eq!(BigUint::from($ty::one()), BigUint::one());
assert_eq!(BigUint::from($ty::MAX - $ty::one()), $max - BigUint::one());
assert_eq!(BigUint::from($ty::MAX), $max);
}
}
check!(u8, BigUint::from_slice(&[u8::MAX as BigDigit]));
check!(u16, BigUint::from_slice(&[u16::MAX as BigDigit]));
check!(u32, BigUint::from_slice(&[u32::MAX]));
check!(u64, BigUint::from_slice(&[u32::MAX, u32::MAX]));
check!(usize, BigUint::from(usize::MAX as u64));
}
const SUM_TRIPLES: &'static [(&'static [BigDigit],
&'static [BigDigit],
&'static [BigDigit])] = &[
@ -3411,9 +3429,9 @@ mod bigint_tests {
use super::Sign::{Minus, NoSign, Plus};
use std::cmp::Ordering::{Less, Equal, Greater};
use std::i64;
use std::{i8, i16, i32, i64, isize};
use std::iter::repeat;
use std::u64;
use std::{u8, u16, u32, u64, usize};
use std::ops::{Neg};
use rand::thread_rng;
@ -3637,6 +3655,57 @@ mod bigint_tests {
assert_eq!(negative.to_biguint(), None);
}
#[test]
fn test_convert_from_uint() {
macro_rules! check {
($ty:ident, $max:expr) => {
assert_eq!(BigInt::from($ty::zero()), BigInt::zero());
assert_eq!(BigInt::from($ty::one()), BigInt::one());
assert_eq!(BigInt::from($ty::MAX - $ty::one()), $max - BigInt::one());
assert_eq!(BigInt::from($ty::MAX), $max);
}
}
check!(u8, BigInt::from_slice(Plus, &[u8::MAX as BigDigit]));
check!(u16, BigInt::from_slice(Plus, &[u16::MAX as BigDigit]));
check!(u32, BigInt::from_slice(Plus, &[u32::MAX as BigDigit]));
check!(u64, BigInt::from_slice(Plus, &[u32::MAX as BigDigit, u32::MAX as BigDigit]));
check!(usize, BigInt::from(usize::MAX as u64));
}
#[test]
fn test_convert_from_int() {
macro_rules! check {
($ty:ident, $min:expr, $max:expr) => {
assert_eq!(BigInt::from($ty::MIN), $min);
assert_eq!(BigInt::from($ty::MIN + $ty::one()), $min + BigInt::one());
assert_eq!(BigInt::from(-$ty::one()), -BigInt::one());
assert_eq!(BigInt::from($ty::zero()), BigInt::zero());
assert_eq!(BigInt::from($ty::one()), BigInt::one());
assert_eq!(BigInt::from($ty::MAX - $ty::one()), $max - BigInt::one());
assert_eq!(BigInt::from($ty::MAX), $max);
}
}
check!(i8, BigInt::from_slice(Minus, &[1 << 7]),
BigInt::from_slice(Plus, &[i8::MAX as BigDigit]));
check!(i16, BigInt::from_slice(Minus, &[1 << 15]),
BigInt::from_slice(Plus, &[i16::MAX as BigDigit]));
check!(i32, BigInt::from_slice(Minus, &[1 << 31]),
BigInt::from_slice(Plus, &[i32::MAX as BigDigit]));
check!(i64, BigInt::from_slice(Minus, &[0, 1 << 31]),
BigInt::from_slice(Plus, &[u32::MAX as BigDigit, i32::MAX as BigDigit]));
check!(isize, BigInt::from(isize::MIN as i64),
BigInt::from(isize::MAX as i64));
}
#[test]
fn test_convert_from_biguint() {
assert_eq!(BigInt::from(BigUint::zero()), BigInt::zero());
assert_eq!(BigInt::from(BigUint::one()), BigInt::one());
assert_eq!(BigInt::from(BigUint::from_slice(&[1, 2, 3])), BigInt::from_slice(Plus, &[1, 2, 3]));
}
const N1: BigDigit = -1i32 as BigDigit;
const N2: BigDigit = -2i32 as BigDigit;