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|
use super::{Input, VariableOutput, ExtendableOutput, Reset, XofReader};
use core::fmt::Debug;
#[macro_export]
macro_rules! new_test {
($name:ident, $test_name:expr, $hasher:ty, $test_func:ident) => {
#[test]
fn $name() {
use digest::blobby::Blob2Iterator;
let data = include_bytes!(concat!("data/", $test_name, ".blb"));
for (i, row) in Blob2Iterator::new(data).unwrap().enumerate() {
let input = row[0];
let output = row[1];
if let Some(desc) = $test_func::<$hasher>(input, output) {
panic!("\n\
Failed test №{}: {}\n\
input:\t{:?}\n\
output:\t{:?}\n",
i, desc, input, output,
);
}
}
}
}
}
// module to separate Digest from other traits
mod foo {
use super::super::Digest;
use core::fmt::Debug;
pub fn digest_test<D>(input: &[u8], output: &[u8]) -> Option<&'static str>
where D: Digest + Debug + Clone
{
let mut hasher = D::new();
// Test that it works when accepting the message all at once
hasher.input(input);
let mut hasher2 = hasher.clone();
if hasher.result().as_slice() != output {
return Some("whole message");
}
// Test if reset works correctly
hasher2.reset();
hasher2.input(input);
if hasher2.result().as_slice() != output {
return Some("whole message after reset");
}
// Test that it works when accepting the message in pieces
let mut hasher = D::new();
let len = input.len();
let mut left = len;
while left > 0 {
let take = (left + 1) / 2;
hasher.input(&input[len - left..take + len - left]);
left = left - take;
}
if hasher.result().as_slice() != output {
return Some("message in pieces");
}
// Test processing byte-by-byte
let mut hasher = D::new();
for chunk in input.chunks(1) {
hasher.input(chunk)
}
if hasher.result().as_slice() != output {
return Some("message byte-by-byte");
}
None
}
pub fn one_million_a<D>(expected: &[u8])
where D: Digest + Debug + Clone
{
let mut sh = D::new();
for _ in 0..50_000 {
sh.input(&[b'a'; 10]);
}
sh.input(&[b'a'; 500_000][..]);
let out = sh.result();
assert_eq!(out[..], expected[..]);
}
}
pub use self::foo::{digest_test, one_million_a};
pub fn xof_test<D>(input: &[u8], output: &[u8])
-> Option<&'static str>
where D: Input + ExtendableOutput + Default + Debug + Reset + Clone
{
let mut hasher = D::default();
let mut buf = [0u8; 1024];
// Test that it works when accepting the message all at once
hasher.input(input);
let mut hasher2 = hasher.clone();
{
let out = &mut buf[..output.len()];
hasher.xof_result().read(out);
if out != output { return Some("whole message"); }
}
// Test if hasher resets correctly
hasher2.reset();
hasher2.input(input);
{
let out = &mut buf[..output.len()];
hasher2.xof_result().read(out);
if out != output { return Some("whole message after reset"); }
}
// Test if hasher accepts message in pieces correctly
let mut hasher = D::default();
let len = input.len();
let mut left = len;
while left > 0 {
let take = (left + 1) / 2;
hasher.input(&input[len - left..take + len - left]);
left = left - take;
}
{
let out = &mut buf[..output.len()];
hasher.xof_result().read(out);
if out != output { return Some("message in pieces"); }
}
// Test reading from reader byte by byte
let mut hasher = D::default();
hasher.input(input);
let mut reader = hasher.xof_result();
let out = &mut buf[..output.len()];
for chunk in out.chunks_mut(1) {
reader.read(chunk);
}
if out != output { return Some("message in pieces"); }
None
}
pub fn variable_test<D>(input: &[u8], output: &[u8])
-> Option<&'static str>
where D: Input + VariableOutput + Reset + Debug + Clone
{
let mut hasher = D::new(output.len()).unwrap();
let mut buf = [0u8; 128];
let buf = &mut buf[..output.len()];
// Test that it works when accepting the message all at once
hasher.input(input);
let mut hasher2 = hasher.clone();
hasher.variable_result(|res| buf.copy_from_slice(res));
if buf != output { return Some("whole message"); }
// Test if reset works correctly
hasher2.reset();
hasher2.input(input);
hasher2.variable_result(|res| buf.copy_from_slice(res));
if buf != output { return Some("whole message after reset"); }
// Test that it works when accepting the message in pieces
let mut hasher = D::new(output.len()).unwrap();
let len = input.len();
let mut left = len;
while left > 0 {
let take = (left + 1) / 2;
hasher.input(&input[len - left..take + len - left]);
left = left - take;
}
hasher.variable_result(|res| buf.copy_from_slice(res));
if buf != output { return Some("message in pieces"); }
// Test processing byte-by-byte
let mut hasher = D::new(output.len()).unwrap();
for chunk in input.chunks(1) {
hasher.input(chunk)
}
hasher.variable_result(|res| buf.copy_from_slice(res));
if buf != output { return Some("message byte-by-byte"); }
None
}
#[macro_export]
macro_rules! bench {
($name:ident, $engine:path, $bs:expr) => {
#[bench]
fn $name(b: &mut Bencher) {
let mut d = <$engine>::default();
let data = [0; $bs];
b.iter(|| {
d.input(&data[..]);
});
b.bytes = $bs;
}
};
($engine:path) => {
extern crate test;
use test::Bencher;
use digest::Digest;
bench!(bench1_10, $engine, 10);
bench!(bench2_100, $engine, 100);
bench!(bench3_1000, $engine, 1000);
bench!(bench4_10000, $engine, 10000);
}
}
|
