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tests: make them 1.51-compatible, fix tiny gen bug

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This commit is contained in:
Ivan Smirnov 2022-01-06 03:39:35 +03:00
parent fa2a675ecb
commit 437d9b6280
1 changed files with 14 additions and 8 deletions
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22
tests/test_gen.rs
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@ -5,7 +5,11 @@ use std::borrow::Cow;
use std::fmt::Debug;
use cfg_if::cfg_if;
use rand::{rngs::StdRng, Rng, SeedableRng};
use rand::{
distributions::{Distribution, Standard},
rngs::StdRng,
Rng, SeedableRng,
};
use libqoi::{qoi_decode, qoi_encode};
use qoi_fast::consts::{
@ -64,7 +68,7 @@ struct ImageGen {
impl ImageGen {
pub fn new_random(rng: &mut impl Rng) -> Self {
let p = [0; 6].map(|_| rng.gen::<f64>());
let p: [f64; 6] = rng.gen();
let t = p.iter().sum::<f64>();
Self {
p_new: p[0] / t,
@ -83,7 +87,10 @@ impl ImageGen {
}
}
fn generate_const<R: Rng, const N: usize>(&self, rng: &mut R, min_len: usize) -> Vec<u8> {
fn generate_const<R: Rng, const N: usize>(&self, rng: &mut R, min_len: usize) -> Vec<u8>
where
Standard: Distribution<[u8; N]>,
{
let mut s = GenState::<N>::with_capacity(min_len);
let zero = GenState::<N>::zero();
@ -91,7 +98,7 @@ impl ImageGen {
let mut p = rng.gen_range(0.0..1.0);
if p < self.p_new {
s.write([0; N].map(|_| rng.gen()));
s.write(rng.gen());
continue;
}
p -= self.p_new;
@ -115,10 +122,9 @@ impl ImageGen {
if p < self.p_diff {
let mut px = s.prev;
let d = [0; 3].map(|_| rng.gen_range(0_u8..4).wrapping_sub(2));
px[0] = px[0].wrapping_add(d[0]);
px[1] = px[1].wrapping_add(d[0]);
px[2] = px[2].wrapping_add(d[0]);
px[0] = px[0].wrapping_add(rng.gen_range(0_u8..4).wrapping_sub(2));
px[1] = px[1].wrapping_add(rng.gen_range(0_u8..4).wrapping_sub(2));
px[2] = px[2].wrapping_add(rng.gen_range(0_u8..4).wrapping_sub(2));
s.write(px);
continue;
}