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Merge pull request #14 from Nemo157/arbitrary-model-tests
Add basic arbitrary-model-tests based fuzzing
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hfuzz_target/ | ||
hfuzz_workspace/ |
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[package] | ||
name = "tinyvec-fuzz" | ||
version = "0.1.0" | ||
authors = [] | ||
edition = "2018" | ||
publish = false | ||
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[dependencies] | ||
tinyvec = { path = "..", features = ["extern_crate_alloc", "nightly_slice_partition_dedup"] } | ||
arbitrary-model-tests = { git = "https://github.com/jakubadamw/arbitrary-model-tests" } | ||
honggfuzz = "0.5.45" | ||
arbitrary = "0.2.0" | ||
better-panic = "0.2.0" | ||
derive_arbitrary = "0.2.0" |
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## Quickstart | ||
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```console | ||
> cargo install honggfuzz | ||
> cargo hfuzz run arrayish | ||
``` | ||
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When a crash is found: | ||
```console | ||
> cargo hfuzz run-debug arrayish hfuzz_workspace/arrayish/*.fuzz | ||
``` |
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use arbitrary::{Arbitrary, Unstructured}; | ||
use std::ops::{Range, RangeBounds, RangeFrom, RangeInclusive, RangeTo, RangeToInclusive, Bound}; | ||
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#[derive(Debug, Clone, Eq, PartialEq)] | ||
pub enum ArbRange<T> { | ||
Range(Range<T>), | ||
RangeFrom(RangeFrom<T>), | ||
RangeInclusive(RangeInclusive<T>), | ||
RangeTo(RangeTo<T>), | ||
RangeToInclusive(RangeToInclusive<T>), | ||
} | ||
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impl<T> RangeBounds<T> for ArbRange<T> { | ||
fn start_bound(&self) -> Bound<&T> { | ||
match self { | ||
ArbRange::Range(range) => range.start_bound(), | ||
ArbRange::RangeFrom(range) => range.start_bound(), | ||
ArbRange::RangeInclusive(range) => range.start_bound(), | ||
ArbRange::RangeTo(range) => range.start_bound(), | ||
ArbRange::RangeToInclusive(range) => range.start_bound(), | ||
} | ||
} | ||
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fn end_bound(&self) -> Bound<&T> { | ||
match self { | ||
ArbRange::Range(range) => range.end_bound(), | ||
ArbRange::RangeFrom(range) => range.end_bound(), | ||
ArbRange::RangeInclusive(range) => range.end_bound(), | ||
ArbRange::RangeTo(range) => range.end_bound(), | ||
ArbRange::RangeToInclusive(range) => range.end_bound(), | ||
} | ||
} | ||
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fn contains<U: ?Sized>(&self, item: &U) -> bool | ||
where | ||
T: PartialOrd<U>, | ||
U: PartialOrd<T>, | ||
{ | ||
match self { | ||
ArbRange::Range(range) => range.contains(item), | ||
ArbRange::RangeFrom(range) => range.contains(item), | ||
ArbRange::RangeInclusive(range) => range.contains(item), | ||
ArbRange::RangeTo(range) => range.contains(item), | ||
ArbRange::RangeToInclusive(range) => range.contains(item), | ||
} | ||
} | ||
} | ||
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impl<T: Arbitrary> Arbitrary for ArbRange<T> { | ||
fn arbitrary<U: Unstructured + ?Sized>(u: &mut U) -> Result<Self, U::Error> { | ||
let variant = u8::arbitrary(u)? % 5; | ||
Ok(match variant { | ||
0 => ArbRange::Range(T::arbitrary(u)?..T::arbitrary(u)?), | ||
1 => ArbRange::RangeFrom(T::arbitrary(u)?..), | ||
2 => ArbRange::RangeInclusive(T::arbitrary(u)?..=T::arbitrary(u)?), | ||
3 => ArbRange::RangeTo(..T::arbitrary(u)?), | ||
4 => ArbRange::RangeToInclusive(..=T::arbitrary(u)?), | ||
_ => unreachable!(), | ||
}) | ||
} | ||
} |
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use derive_arbitrary::Arbitrary; | ||
use arbitrary_model_tests::arbitrary_stateful_operations; | ||
use honggfuzz::fuzz; | ||
use std::{fmt::Debug, iter::FromIterator, ops::{RangeBounds, Bound}}; | ||
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use tinyvec::ArrayishVec; | ||
use tinyvec_fuzz::ArbRange; | ||
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const CAPACITY: usize = 32; | ||
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arbitrary_stateful_operations! { | ||
model = Vec<T>, | ||
tested = ArrayishVec<[T; CAPACITY]>, | ||
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type_parameters = < | ||
T: Default + Clone + Debug + Eq + Ord, | ||
R: RangeBounds<usize> + Clone + Debug, | ||
>, | ||
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methods { | ||
equal { | ||
fn as_mut_slice(&mut self) -> &mut [T]; | ||
fn as_slice(&self) -> &[T]; | ||
fn clear(&mut self); | ||
fn dedup(&mut self); | ||
fn insert(&mut self, index: usize, item: T); | ||
fn is_empty(&self) -> bool; | ||
fn len(&self) -> usize; | ||
fn push(&mut self, item: T); | ||
fn truncate(&mut self, new_len: usize); | ||
} | ||
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equal_with(Vec::from_iter) { | ||
fn drain(&self, range: R) -> impl Iterator<Item = T>; | ||
fn iter(&self) -> impl Iterator<Item = &T>; | ||
fn iter_mut(&self) -> impl Iterator<Item = &mut T>; | ||
} | ||
} | ||
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pre { | ||
match self { | ||
Self::insert { index, .. } if index > model.len() => { | ||
// TODO: Should test that these identically panic | ||
return; | ||
} | ||
Self::insert { .. } | Self::push { .. } if model.len() == CAPACITY => { | ||
return; | ||
} | ||
Self::drain { ref range } => { | ||
// TODO: Should test that these identically panic | ||
let start = match range.start_bound() { | ||
Bound::Included(&n) => n, | ||
Bound::Excluded(&n) => n + 1, | ||
Bound::Unbounded => 0, | ||
}; | ||
let end = match range.end_bound() { | ||
// If it's already usize::max, doesn't really matter about adding 1 | ||
Bound::Included(&n) => n.checked_add(1).unwrap_or(n), | ||
Bound::Excluded(&n) => n, | ||
Bound::Unbounded => model.len(), | ||
}; | ||
if start > end || end > model.len() { | ||
return; | ||
} | ||
} | ||
_ => {} | ||
} | ||
} | ||
} | ||
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const MAX_RING_SIZE: usize = 16_384; | ||
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fn fuzz_cycle(data: &[u8]) -> Result<(), ()> { | ||
use arbitrary::{Arbitrary, FiniteBuffer}; | ||
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let mut ring = FiniteBuffer::new(&data, MAX_RING_SIZE).map_err(|_| ())?; | ||
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let mut model = Vec::<u16>::default(); | ||
let mut tested: ArrayishVec<[u16; 32]> = ArrayishVec::new(); | ||
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let mut _op_trace = String::new(); | ||
while let Ok(op) = <op::Op<u16, ArbRange<usize>> as Arbitrary>::arbitrary(&mut ring) { | ||
#[cfg(fuzzing_debug)] | ||
_op_trace.push_str(&format!("{}\n", op.to_string())); | ||
op.execute_and_compare(&mut model, &mut tested); | ||
} | ||
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Ok(()) | ||
} | ||
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fn main() -> Result<(), ()> { | ||
better_panic::install(); | ||
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loop { | ||
fuzz!(|data: &[u8]| { | ||
let _ = fuzz_cycle(data); | ||
}); | ||
} | ||
} |
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use derive_arbitrary::Arbitrary; | ||
use arbitrary_model_tests::arbitrary_stateful_operations; | ||
use honggfuzz::fuzz; | ||
use std::{fmt::Debug, iter::FromIterator, ops::{RangeBounds, Bound}}; | ||
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use tinyvec::TinyVec; | ||
use tinyvec_fuzz::ArbRange; | ||
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const CAPACITY: usize = 32; | ||
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arbitrary_stateful_operations! { | ||
model = Vec<T>, | ||
tested = TinyVec<[T; CAPACITY]>, | ||
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type_parameters = < | ||
T: Default + Clone + Debug + Eq + Ord, | ||
R: RangeBounds<usize> + Clone + Debug, | ||
>, | ||
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methods { | ||
equal { | ||
fn as_mut_slice(&mut self) -> &mut [T]; | ||
fn as_slice(&self) -> &[T]; | ||
fn clear(&mut self); | ||
fn dedup(&mut self); | ||
fn insert(&mut self, index: usize, item: T); | ||
fn is_empty(&self) -> bool; | ||
fn len(&self) -> usize; | ||
fn push(&mut self, item: T); | ||
fn truncate(&mut self, new_len: usize); | ||
} | ||
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equal_with(Vec::from_iter) { | ||
fn drain(&self, range: R) -> impl Iterator<Item = T>; | ||
fn iter(&self) -> impl Iterator<Item = &T>; | ||
fn iter_mut(&self) -> impl Iterator<Item = &mut T>; | ||
} | ||
} | ||
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pre { | ||
match self { | ||
Self::insert { index, .. } if index > model.len() => { | ||
// TODO: Should test that these identically panic | ||
return; | ||
} | ||
Self::drain { ref range } => { | ||
// TODO: Should test that these identically panic | ||
let start = match range.start_bound() { | ||
Bound::Included(&n) => n, | ||
Bound::Excluded(&n) => n + 1, | ||
Bound::Unbounded => 0, | ||
}; | ||
let end = match range.end_bound() { | ||
// If it's already usize::max, doesn't really matter about adding 1 | ||
Bound::Included(&n) => n.checked_add(1).unwrap_or(n), | ||
Bound::Excluded(&n) => n, | ||
Bound::Unbounded => model.len(), | ||
}; | ||
if start > end || end > model.len() { | ||
return; | ||
} | ||
} | ||
_ => {} | ||
} | ||
} | ||
} | ||
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const MAX_RING_SIZE: usize = 16_384; | ||
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fn fuzz_cycle(data: &[u8]) -> Result<(), ()> { | ||
use arbitrary::{Arbitrary, FiniteBuffer}; | ||
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let mut ring = FiniteBuffer::new(&data, MAX_RING_SIZE).map_err(|_| ())?; | ||
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let mut model = Vec::<u16>::default(); | ||
let mut tested: TinyVec<[u16; 32]> = TinyVec::new(); | ||
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let mut _op_trace = String::new(); | ||
while let Ok(op) = <op::Op<u16, ArbRange<usize>> as Arbitrary>::arbitrary(&mut ring) { | ||
#[cfg(fuzzing_debug)] | ||
_op_trace.push_str(&format!("{}\n", op.to_string())); | ||
op.execute_and_compare(&mut model, &mut tested); | ||
} | ||
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Ok(()) | ||
} | ||
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fn main() -> Result<(), ()> { | ||
better_panic::install(); | ||
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loop { | ||
fuzz!(|data: &[u8]| { | ||
let _ = fuzz_cycle(data); | ||
}); | ||
} | ||
} |
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mod arb_range; | ||
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pub use arb_range::ArbRange; |
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