Fix folder names in primitives (#4358)

* sr-arithmetic -> arithmetic

* sr-sandbox -> sandbox

* primitives/sr-staking-primitives -> primitives/staking

* primitives/sr-version -> primitives/version

* primitives/block-builder/runtime-api -> primitives/block-builder
This commit is contained in:
Benjamin Kampmann
2019-12-11 11:36:29 +01:00
committed by GitHub
parent 605c0e655e
commit df133d6be3
56 changed files with 46 additions and 46 deletions
@@ -0,0 +1,2 @@
hfuzz_target
hfuzz_workspace
+449
View File
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@@ -0,0 +1,22 @@
[package]
name = "sp-arithmetic-fuzzer"
version = "2.0.0"
authors = ["Parity Technologies <admin@parity.io>"]
edition = "2018"
[dependencies]
sp-arithmetic = { path = ".." }
honggfuzz = "0.5"
primitive-types = "0.6"
num-bigint = "0.2"
num-traits = "0.2"
[workspace]
[[bin]]
name = "biguint"
path = "src/biguint.rs"
[[bin]]
name = "rational128"
path = "src/rational128.rs"
@@ -0,0 +1,181 @@
// Copyright 2019 Parity Technologies (UK) Ltd.
// This file is part of Substrate.
// Substrate is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Substrate is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Substrate. If not, see <http://www.gnu.org/licenses/>.
//! # Running
//! Running this fuzzer can be done with `cargo hfuzz run biguint`. `honggfuzz` CLI options can
//! be used by setting `HFUZZ_RUN_ARGS`, such as `-n 4` to use 4 threads.
//!
//! # Debugging a panic
//! Once a panic is found, it can be debugged with
//! `cargo hfuzz run-debug biguint hfuzz_workspace/biguint/*.fuzz`.
//!
//! # More infomation
//! More information about `honggfuzz` can be found
//! [here](https://docs.rs/honggfuzz/).
use honggfuzz::fuzz;
use sp_arithmetic::biguint::{BigUint, Single};
use std::convert::TryFrom;
fn main() {
loop {
fuzz!(|data: (Vec<Single>, Vec<Single>, bool)| {
let (mut digits_u, mut digits_v, return_remainder) = data;
let mut u = BigUint::from_limbs(&digits_u);
let mut v = BigUint::from_limbs(&digits_v);
u.lstrip();
v.lstrip();
let ue = u128::try_from(u.clone());
let ve = u128::try_from(v.clone());
digits_u.reverse();
digits_v.reverse();
let num_u = num_bigint::BigUint::new(digits_u.clone());
let num_v = num_bigint::BigUint::new(digits_v.clone());
if check_digit_lengths(&u, &v, 4) {
assert_eq!(u.cmp(&v), ue.cmp(&ve));
assert_eq!(u.eq(&v), ue.eq(&ve));
}
if check_digit_lengths(&u, &v, 3) {
let expected = ue.unwrap() + ve.unwrap();
let t = u.clone().add(&v);
assert_eq!(
u128::try_from(t.clone()).unwrap(), expected,
"{:?} + {:?} ===> {:?} != {:?}", u, v, t, expected,
);
}
if check_digit_lengths(&u, &v, 4) {
let expected = ue.unwrap().checked_sub(ve.unwrap());
let t = u.clone().sub(&v);
if expected.is_none() {
assert!(t.is_err())
} else {
let t = t.unwrap();
let expected = expected.unwrap();
assert_eq!(
u128::try_from(t.clone()).unwrap(), expected,
"{:?} - {:?} ===> {:?} != {:?}", u, v, t, expected,
);
}
}
if check_digit_lengths(&u, &v, 2) {
let expected = ue.unwrap() * ve.unwrap();
let t = u.clone().mul(&v);
assert_eq!(
u128::try_from(t.clone()).unwrap(), expected,
"{:?} * {:?} ===> {:?} != {:?}", u, v, t, expected,
);
}
if check_digit_lengths(&u, &v, 4) {
let (ue, ve) = (ue.unwrap(), ve.unwrap());
if ve == 0 {
return;
}
let (q, r) = (ue / ve, ue % ve);
if let Some((qq, rr)) = u.clone().div(&v, true) {
assert_eq!(
u128::try_from(qq.clone()).unwrap(), q,
"{:?} / {:?} ===> {:?} != {:?}", u, v, qq, q,
);
assert_eq!(
u128::try_from(rr.clone()).unwrap(), r,
"{:?} % {:?} ===> {:?} != {:?}", u, v, rr, r,
);
} else if v.len() == 1 {
let qq = u.clone().div_unit(ve as Single);
assert_eq!(
u128::try_from(qq.clone()).unwrap(), q,
"[single] {:?} / {:?} ===> {:?} != {:?}", u, v, qq, q,
);
} else if v.msb() != 0 && u.msb() != 0 && u.len() > v.len() {
panic!("div returned none for an unexpected reason");
}
}
// Test against num_bigint
// Equality
assert_eq!(u.cmp(&v), num_u.cmp(&num_v));
// Addition
let w = u.clone().add(&v);
let num_w = num_u.clone() + &num_v;
assert_biguints_eq(&w, &num_w);
// Subtraction
if let Ok(w) = u.clone().sub(&v) {
let num_w = num_u.clone() - &num_v;
assert_biguints_eq(&w, &num_w);
}
// Multiplication
let w = u.clone().mul(&v);
let num_w = num_u.clone() * &num_v;
assert_biguints_eq(&w, &num_w);
// Division
if v.len() == 1 && v.get(0) != 0 {
let w = u.clone().div_unit(v.get(0));
let num_w = num_u.clone() / &num_v;
assert_biguints_eq(&w, &num_w);
} else if u.len() > v.len() && v.len() > 0 {
let num_remainder = num_u.clone() % num_v.clone();
let (w, remainder) = u.clone().div(&v, return_remainder).unwrap();
let num_w = num_u.clone() / &num_v;
assert_biguints_eq(&w, &num_w);
if return_remainder {
assert_biguints_eq(&remainder, &num_remainder);
}
}
});
}
}
fn check_digit_lengths(u: &BigUint, v: &BigUint, max_limbs: usize) -> bool {
1 <= u.len() && u.len() <= max_limbs && 1 <= v.len() && v.len() <= max_limbs
}
fn assert_biguints_eq(a: &BigUint, b: &num_bigint::BigUint) {
let mut a = a.clone();
a.lstrip();
// `num_bigint::BigUint` doesn't expose it's internals, so we need to convert into that to
// compare.
let limbs = (0 .. a.len()).map(|i| a.get(i)).collect();
let num_a = num_bigint::BigUint::new(limbs);
assert!(&num_a == b, "\narithmetic: {:?}\nnum-bigint: {:?}", a, b);
}
@@ -0,0 +1,77 @@
// Copyright 2019 Parity Technologies (UK) Ltd.
// This file is part of Substrate.
// Substrate is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Substrate is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Substrate. If not, see <http://www.gnu.org/licenses/>.
//! # Running
//! Running this fuzzer can be done with `cargo hfuzz run rational128`. `honggfuzz` CLI options can
//! be used by setting `HFUZZ_RUN_ARGS`, such as `-n 4` to use 4 threads.
//!
//! # Debugging a panic
//! Once a panic is found, it can be debugged with
//! `cargo hfuzz run-debug rational128 hfuzz_workspace/rational128/*.fuzz`.
//!
//! # More infomation
//! More information about `honggfuzz` can be found
//! [here](https://docs.rs/honggfuzz/).
use honggfuzz::fuzz;
use sp_arithmetic::{helpers_128bit::multiply_by_rational, traits::Zero};
fn main() {
loop {
fuzz!(|data: ([u8; 16], [u8; 16], [u8; 16])| {
let (a_bytes, b_bytes, c_bytes) = data;
let (a, b, c) = (
u128::from_be_bytes(a_bytes),
u128::from_be_bytes(b_bytes),
u128::from_be_bytes(c_bytes),
);
println!("++ Equation: {} * {} / {}", a, b, c);
// The point of this fuzzing is to make sure that `multiply_by_rational` is 100%
// accurate as long as the value fits in a u128.
if let Ok(result) = multiply_by_rational(a, b, c) {
let truth = mul_div(a, b, c);
if result != truth && result != truth + 1 {
println!("++ Expected {}", truth);
println!("+++++++ Got {}", result);
panic!();
}
}
})
}
}
fn mul_div(a: u128, b: u128, c: u128) -> u128 {
use primitive_types::U256;
if a.is_zero() {
return Zero::zero();
}
let c = c.max(1);
// e for extended
let ae: U256 = a.into();
let be: U256 = b.into();
let ce: U256 = c.into();
let r = ae * be / ce;
if r > u128::max_value().into() {
a
} else {
r.as_u128()
}
}