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Handle arbitrary::Error::IncorrectFormat #1

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Handle arbitrary::Error::IncorrectFormat #1

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20 changes: 17 additions & 3 deletions src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -170,9 +170,23 @@ impl<A: ArbInterop> proptest::strategy::Strategy for ArbStrategy<A> {
type Value = A;

fn new_tree(&self, runner: &mut TestRunner) -> proptest::strategy::NewTree<Self> {
let mut bytes = std::iter::repeat(0u8).take(self.size).collect::<Vec<u8>>();
runner.rng().fill_bytes(&mut bytes);
ArbValueTree::new(bytes).map_err(|_| "initial arbitrary call failed".into())
loop {
let mut bytes = std::iter::repeat(0u8).take(self.size).collect::<Vec<u8>>();
runner.rng().fill_bytes(&mut bytes);
match ArbValueTree::new(bytes) {
Ok(v) => {
return Ok(v);
}
Err(e @ arbitrary::Error::IncorrectFormat) => {
// The Arbitrary impl couldn't construct a value
// from the given bytes. Try again.
runner.reject_local(format!("{e}"))?;
}
Err(e) => {
return Err(format!("{e}").into());
}
}
}
}
}

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