3e034d5ede Add Arbitrary dependency (yancy)
Pull request description:
Adds an example draft showing what is needed to use Arbitrary for coin selection.
Shot out to how nice Arbitrary is for fuzzing a target by taking unstructured randomness and creating structured rust-bitcoin types for fuzzing. Is there a way we could add this to rust-bitcoin for structuring the fuzz data needed?
This is then the example to fuzz test a SRD algo (after applying this PR to rust-bitcoin) using rust-bitcoin types :)
```
#![no_main]
use arbitrary::Arbitrary;
use bitcoin::{Amount, FeeRate};
use bitcoin_coin_selection::{select_coins_srd, WeightedUtxo};
use libfuzzer_sys::fuzz_target;
use rand::thread_rng;
#[derive(Arbitrary, Debug)]
pub struct Params {
target: Amount,
fee_rate: FeeRate,
weighted_utxos: Vec<WeightedUtxo>,
}
fuzz_target!(|params: Params| {
let Params { target: t, fee_rate: f, weighted_utxos: wu } = params;
select_coins_srd(t, f, &wu, &mut thread_rng());
});
```
ACKs for top commit:
tcharding:
ACK 3e034d5ede
Kixunil:
ACK 3e034d5ede
apoelstra:
ACK 3e034d5ede successfully ran local tests
Tree-SHA512: accd565815de3b37730d2ff12a24fcfc84e52ad357e5c940b1500a1e0bb17f4ff5fd6e52d31e8e96bb5290ee4fa050cfd2a9bbd6bbae13fc378f43093b64177f
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