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oxigraph/fuzz/fuzz_targets/nquads.rs

67 lines
2.0 KiB

#![no_main]
use libfuzzer_sys::fuzz_target;
use oxrdf::Quad;
use oxttl::{NQuadsParser, NQuadsSerializer};
fn parse<'a>(chunks: impl IntoIterator<Item = &'a [u8]>) -> (Vec<Quad>, Vec<String>) {
let mut quads = Vec::new();
let mut errors = Vec::new();
let mut parser = NQuadsParser::new().with_quoted_triples().parse();
for chunk in chunks {
parser.extend_from_slice(chunk);
while let Some(result) = parser.read_next() {
match result {
Ok(quad) => quads.push(quad),
Err(error) => errors.push(error.to_string()),
}
}
}
parser.end();
while let Some(result) = parser.read_next() {
match result {
Ok(quad) => quads.push(quad),
Err(error) => errors.push(error.to_string()),
}
}
assert!(parser.is_end());
(quads, errors)
}
fuzz_target!(|data: &[u8]| {
// We parse with splitting
let (quads, errors) = parse(data.split(|c| *c == 0xFF));
// We parse without splitting
let (quads_without_split, errors_without_split) = parse([data
.iter()
.copied()
.filter(|c| *c != 0xFF)
.collect::<Vec<_>>()
.as_slice()]);
assert_eq!(quads, quads_without_split);
assert_eq!(errors, errors_without_split);
// We serialize
let mut writer = NQuadsSerializer::new().serialize_to_write(Vec::new());
for quad in &quads {
writer.write_quad(quad).unwrap();
}
let new_serialization = writer.finish();
// We parse the serialization
let new_quads = NQuadsParser::new()
.with_quoted_triples()
.parse_read(new_serialization.as_slice())
.collect::<Result<Vec<_>, _>>()
.map_err(|e| {
format!(
"Error on {:?} from {quads:?} based on {:?}: {e}",
String::from_utf8_lossy(&new_serialization),
String::from_utf8_lossy(data)
)
})
.unwrap();
// We check the roundtrip has not changed anything
assert_eq!(new_quads, quads);
});