Skip to content

Add a simple unicode fuzz test as a standalone example. #23

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
wants to merge 2 commits into
base: master
Choose a base branch
from
Open

Add a simple unicode fuzz test as a standalone example. #23

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
59b4f73
Add a simple unicode fuzz test as a standalone example.
calmofthestorm May 9, 2020
37bdd9f
Add very crude planning and properties fuzzing.
calmofthestorm May 10, 2020
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
4 changes: 4 additions & 0 deletions Cargo.toml
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -33,6 +33,10 @@ serde_indextree = { version = "0.2.0", optional = true }
syntect = { version = "4.1.0", optional = true }

[dev-dependencies]
bytesize = "1.0.0"
iobuffer = "0.2.0"
num_cpus = "1.13.0"
pretty_assertions = "0.6.1"
rand = "0.7.3"
serde_json = "1.0.51"
slugify = "0.1.0"
307 changes: 307 additions & 0 deletions examples/fuzz.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,307 @@
// Author: Alex Roper <alex@aroper.net>

use rand::Rng;
use rand::RngCore;
use serde_json::to_writer;

use std::convert::TryInto;
use std::io::Read;

fn fuzz(
stats: std::sync::mpsc::Sender<(
usize,
usize,
usize,
usize,
std::time::Duration,
std::time::Duration,
)>,
) {
let mut rng = rand::thread_rng();

let mut s = String::default();
let mut s2 = String::default();

let mut counter: usize = 0;
let mut errors: usize = 0;
let mut jumbo: usize = 0;
let mut bytes: usize = 0;
let mut assembly_time = std::time::Duration::new(0, 0);
let mut parse_time = std::time::Duration::new(0, 0);
loop {
if counter % 100 == 1 {
stats
.send((counter, jumbo, errors, bytes, assembly_time, parse_time))
.unwrap();

counter = 0;
errors = 0;
jumbo = 0;
bytes = 0;
assembly_time = std::time::Duration::new(0, 0);
parse_time = std::time::Duration::new(0, 0);
}

let mut length = rng.next_u32() % 50;
if length == 18 {
length = rng.next_u32() % 500 + 15;
}
if length == 19 && rng.next_u32() % 7 == 3 {
length = rng.next_u32() % 10000 + 10000;
jumbo += 1;
}

let length = length as usize;

let t = std::time::Instant::now();
s.clear();

let structure = "* -\n\r\t:@%<>-[]_#";
let structure_len = structure.chars().count();

while s.len() < length {
let r = rng.gen_range(0, 80);
if r < 10 {
s += "* ";
} else if r < 20 {
s += "\n* ";
} else if r < 30 {
s.push('\n');
} else if r < 40 {
s.extend(
rng.sample_iter(rand::distributions::Alphanumeric)
.take((rng.next_u32() % 20).try_into().unwrap()),
);
s.push(' ')
} else if r < 50 {
s.extend(
rng.sample_iter::<char, _>(rand::distributions::Standard)
.take((rng.next_u32() % 20 as u32).try_into().unwrap()),
);
s.push(' ')
} else if r < 60 {
s.push(
structure
.chars()
.nth(rng.gen_range(0, structure_len))
.unwrap(),
);
} else if r < 64 {
let mut thing = gen_planning();
if rng.gen_range(0, 10) == 2 {
thing = format!("Hello\n{}", &thing);
}
appendify(&mut s, &thing);
} else if r < 68 {
let mut thing = gen_properties();
if rng.gen_range(0, 10) == 2 {
thing = format!("Hello\n{}", &thing);
}
appendify(&mut s, &thing);
} else if r < 72 {
let r = rng.gen_range(0, 13);
let stuff = if r == 1 {
format!("{}{}", gen_planning(), gen_properties())
} else if r == 2 {
format!("{}\n{}", gen_properties(), gen_planning())
} else if r == 3 {
format!("Hello!\n{}\n{}", gen_planning(), gen_properties())
} else if r == 4 {
format!("Hello!\nWorld!\n{}\n{}", gen_planning(), gen_properties())
} else {
format!("\n{}\n{}", gen_planning(), gen_properties())
};

appendify(&mut s, &stuff);
} else {
s.extend(
rng.sample_iter::<char, _>(rand::distributions::Standard)
.take((rng.next_u32() as usize % length).try_into().unwrap()),
);
}
}
assembly_time += t.elapsed();
bytes += s.len();

let t = std::time::Instant::now();
let org = orgize::Org::parse(&s);

if !org.validate().is_empty() {
errors += 1;
} else {
let mut buf = iobuffer::IoBuffer::default();

if org.write_org(&mut buf).is_err() {
errors += 1;
}

buf.read_to_string(&mut s2).unwrap();
if !orgize::Org::parse(&s2).validate().is_empty() {
errors += 1;
}
s2.clear();

if org.write_html(&mut buf).is_err() {
errors += 1;
}

if to_writer(&mut buf, &org).is_err() {
errors += 1;
}
}
parse_time += t.elapsed();

counter += 1;
}
}

fn appendify(s: &mut String, thing: &str) {
let mut rng = rand::thread_rng();
let r = rng.gen_range(0, 10);
if r == 1 {
*s += thing;
} else if r == 2 {
*s += thing;
s.push('\n');
} else if r == 3 {
s.push('\n');
*s += thing;
} else {
*s += "\n* Hello\n";
*s += thing;
s.push('\n');
}
}

fn gen_properties() -> String {
let mut rng = rand::thread_rng();
let mut properties = " :PROPERTIES:\n".to_string();

for _ in 0..rng.gen_range(0, 10) {
let mut name: String = rng
.sample_iter::<char, _>(rand::distributions::Standard)
.take(rng.gen_range(1, 5))
.filter(|c| *c != '+' && !c.is_whitespace())
.collect();
if name.is_empty() {
continue;
}
if rng.gen_range(0, 5) == 2 {
name.push('+');
}

let value: String = rng
.sample_iter::<char, _>(rand::distributions::Standard)
.take(rng.gen_range(0, 50))
.filter(|c| *c != '\n')
.collect();

properties += &format!(" {}: {}\n", &name, &value);
}

properties += ":END:";

properties
}

fn gen_planning() -> String {
let mut rng = rand::thread_rng();
let mut planning = String::new();
for _ in 0..rng.gen_range(0, 5) {
let r = rng.gen_range(0, 3);
if r == 0 {
planning += "DEADLINE";
} else if r == 1 {
planning += "SCHEDULED";
} else {
planning += "CLOSED";
}
if rng.gen_range(0, 20) == 7 {
planning += "FROBBLE";
}
if rng.gen_range(0, 7) != 1 {
planning += ": ";
}
if rng.gen_range(0, 7) != 1 {
let r = rng.gen_range(0, 5);
if r == 0 {
planning += "<2019-02-04>";
} else if r == 1 {
planning += "[2019-02-04]";
} else if r == 2 {
planning += "<2019-02-04 .+1w>";
} else if r == 3 {
planning += "<2019-02-04 Sun ++1w>";
} else if r == 4 {
planning += "<2019-02-04 Sun -1w>";
}
}
if rng.gen_range(0, 10) != 1 {
planning += " ";
}
}
planning
}

fn main() {
let args: Vec<String> = ::std::env::args().collect();

let thread_count = if args.len() > 2 {
println!("Usage: {} [num_threads]", args[0]);
return;
} else if args.len() == 1 {
num_cpus::get()
} else {
str::parse(&args[1]).unwrap()
};

let (sender, receiver) = std::sync::mpsc::channel();

let threads: Vec<_> = (0..thread_count)
.map(|_| {
let sender = sender.clone();
std::thread::spawn(move || fuzz(sender))
})
.collect();

let mut counter = 0;
let mut jumbo = 0;
let mut errors = 0;
let mut bytes = 0;
let mut assembly_time = std::time::Duration::new(0, 0);
let mut parse_time = std::time::Duration::new(0, 0);

let start = std::time::Instant::now();
let mut last_update = std::time::Instant::now();
let update_interval = std::time::Duration::from_secs(5);
for (counter_delta, jumbo_delta, errors_delta, bytes_delta, assembly_delta, parse_delta) in
receiver.iter()
{
counter += counter_delta;
jumbo += jumbo_delta;
errors += errors_delta;
bytes += bytes_delta;
assembly_time += assembly_delta;
parse_time += parse_delta;

if last_update.elapsed() > update_interval {
last_update = std::time::Instant::now();
println!("Running for: {:?}", start.elapsed());
println!("Threads: {}", thread_count);
println!("Strings tested: {}", counter);
println!("Jumbo strings: {}", jumbo);
println!("Errors: {}", errors);
println!(
"Total input: {}",
bytesize::ByteSize::b(bytes.try_into().unwrap())
);
println!("Total generation time: {:?}", assembly_time);
println!("Total parse time: {:?}", parse_time);
println!("\n\n\n\n\n");
}
}

for thread in threads {
thread.join().unwrap();
}
}