blob: b04e40b826ae68e79670296891ee81e1a5952f7e [file] [log] [blame]
pub mod bufread;
pub mod read;
pub mod write;
#[cfg(test)]
mod tests {
use std::io::prelude::*;
use std::io;
use rand::{thread_rng, Rng};
use zlib::{read, write};
use Compression::Default;
#[test]
fn roundtrip() {
let mut real = Vec::new();
let mut w = write::ZlibEncoder::new(Vec::new(), Default);
let v = thread_rng().gen_iter::<u8>().take(1024).collect::<Vec<_>>();
for _ in 0..200 {
let to_write = &v[..thread_rng().gen_range(0, v.len())];
real.extend(to_write.iter().map(|x| *x));
w.write_all(to_write).unwrap();
}
let result = w.finish().unwrap();
let mut r = read::ZlibDecoder::new(&result[..]);
let mut ret = Vec::new();
r.read_to_end(&mut ret).unwrap();
assert!(ret == real);
}
#[test]
fn drop_writes() {
let mut data = Vec::new();
write::ZlibEncoder::new(&mut data, Default)
.write_all(b"foo")
.unwrap();
let mut r = read::ZlibDecoder::new(&data[..]);
let mut ret = Vec::new();
r.read_to_end(&mut ret).unwrap();
assert!(ret == b"foo");
}
#[test]
fn total_in() {
let mut real = Vec::new();
let mut w = write::ZlibEncoder::new(Vec::new(), Default);
let v = thread_rng().gen_iter::<u8>().take(1024).collect::<Vec<_>>();
for _ in 0..200 {
let to_write = &v[..thread_rng().gen_range(0, v.len())];
real.extend(to_write.iter().map(|x| *x));
w.write_all(to_write).unwrap();
}
let mut result = w.finish().unwrap();
let result_len = result.len();
for _ in 0..200 {
result.extend(v.iter().map(|x| *x));
}
let mut r = read::ZlibDecoder::new(&result[..]);
let mut ret = Vec::new();
r.read_to_end(&mut ret).unwrap();
assert!(ret == real);
assert_eq!(r.total_in(), result_len as u64);
}
#[test]
fn roundtrip2() {
let v = thread_rng()
.gen_iter::<u8>()
.take(1024 * 1024)
.collect::<Vec<_>>();
let mut r = read::ZlibDecoder::new(read::ZlibEncoder::new(&v[..], Default));
let mut ret = Vec::new();
r.read_to_end(&mut ret).unwrap();
assert_eq!(ret, v);
}
#[test]
fn roundtrip3() {
let v = thread_rng()
.gen_iter::<u8>()
.take(1024 * 1024)
.collect::<Vec<_>>();
let mut w = write::ZlibEncoder::new(write::ZlibDecoder::new(Vec::new()), Default);
w.write_all(&v).unwrap();
let w = w.finish().unwrap().finish().unwrap();
assert!(w == v);
}
#[test]
fn reset_decoder() {
let v = thread_rng()
.gen_iter::<u8>()
.take(1024 * 1024)
.collect::<Vec<_>>();
let mut w = write::ZlibEncoder::new(Vec::new(), Default);
w.write_all(&v).unwrap();
let data = w.finish().unwrap();
{
let (mut a, mut b, mut c) = (Vec::new(), Vec::new(), Vec::new());
let mut r = read::ZlibDecoder::new(&data[..]);
r.read_to_end(&mut a).unwrap();
r.reset(&data);
r.read_to_end(&mut b).unwrap();
let mut r = read::ZlibDecoder::new(&data[..]);
r.read_to_end(&mut c).unwrap();
assert!(a == b && b == c && c == v);
}
{
let mut w = write::ZlibDecoder::new(Vec::new());
w.write_all(&data).unwrap();
let a = w.reset(Vec::new()).unwrap();
w.write_all(&data).unwrap();
let b = w.finish().unwrap();
let mut w = write::ZlibDecoder::new(Vec::new());
w.write_all(&data).unwrap();
let c = w.finish().unwrap();
assert!(a == b && b == c && c == v);
}
}
#[test]
fn bad_input() {
// regress tests: previously caused a panic on drop
let mut out: Vec<u8> = Vec::new();
let data: Vec<u8> = (0..255).cycle().take(1024).collect();
let mut w = write::ZlibDecoder::new(&mut out);
match w.write_all(&data[..]) {
Ok(_) => panic!("Expected an error to be returned!"),
Err(e) => assert_eq!(e.kind(), io::ErrorKind::InvalidInput),
}
}
#[test]
fn qc_reader() {
::quickcheck::quickcheck(test as fn(_) -> _);
fn test(v: Vec<u8>) -> bool {
let mut r = read::ZlibDecoder::new(read::ZlibEncoder::new(&v[..], Default));
let mut v2 = Vec::new();
r.read_to_end(&mut v2).unwrap();
v == v2
}
}
#[test]
fn qc_writer() {
::quickcheck::quickcheck(test as fn(_) -> _);
fn test(v: Vec<u8>) -> bool {
let mut w = write::ZlibEncoder::new(write::ZlibDecoder::new(Vec::new()), Default);
w.write_all(&v).unwrap();
v == w.finish().unwrap().finish().unwrap()
}
}
}