xmr-btc-swap/swap/tests/refund.rs

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2020-12-14 06:24:23 +00:00
use crate::testutils::{init_alice, init_bob};
use futures::future::try_join;
use libp2p::Multiaddr;
use rand::rngs::OsRng;
use swap::{alice, alice::swap::AliceState, bob, bob::swap::BobState, storage::Database};
use tempfile::tempdir;
use testcontainers::clients::Cli;
use testutils::init_tracing;
use uuid::Uuid;
use xmr_btc::{bitcoin, config::Config};
pub mod testutils;
// Bob locks btc and Alice locks xmr. Alice fails to act so Bob refunds. Alice
// then also refunds.
#[tokio::test]
async fn both_refund() {
let _guard = init_tracing();
let cli = Cli::default();
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let (
monero,
testutils::Containers {
bitcoind,
monerods: _monerods,
},
) = testutils::init_containers(&cli).await;
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let btc_to_swap = bitcoin::Amount::from_sat(1_000_000);
let xmr_to_swap = xmr_btc::monero::Amount::from_piconero(1_000_000_000_000);
let bob_btc_starting_balance = btc_to_swap * 10;
let bob_xmr_starting_balance = xmr_btc::monero::Amount::from_piconero(0);
let alice_btc_starting_balance = bitcoin::Amount::ZERO;
let alice_xmr_starting_balance = xmr_to_swap * 10;
// todo: This should not be hardcoded
let alice_multiaddr: Multiaddr = "/ip4/127.0.0.1/tcp/9879"
.parse()
.expect("failed to parse Alice's address");
let (
alice_state,
mut alice_swarm_driver,
alice_swarm_handle,
alice_btc_wallet,
alice_xmr_wallet,
) = init_alice(
&bitcoind,
&monero,
btc_to_swap,
xmr_to_swap,
alice_xmr_starting_balance,
alice_multiaddr.clone(),
Config::regtest(),
)
.await;
let (bob_state, bob_swarm_driver, bob_swarm_handle, bob_btc_wallet, bob_xmr_wallet, bob_db) =
init_bob(
alice_multiaddr,
&bitcoind,
&monero,
btc_to_swap,
bob_btc_starting_balance,
xmr_to_swap,
Config::regtest(),
)
.await;
let bob_fut = bob::swap::swap(
bob_state,
bob_swarm_handle,
bob_db,
bob_btc_wallet.clone(),
bob_xmr_wallet.clone(),
OsRng,
Uuid::new_v4(),
);
tokio::spawn(async move { bob_swarm_driver.run().await });
let alice_swap_id = Uuid::new_v4();
let alice_db_datadir = tempdir().unwrap();
let alice_db = Database::open(alice_db_datadir.path()).unwrap();
let alice_xmr_locked_fut = alice::swap::run_until(
alice_state,
alice::swap::is_xmr_locked,
alice_swarm_handle,
alice_btc_wallet.clone(),
alice_xmr_wallet.clone(),
Config::regtest(),
alice_swap_id,
alice_db,
);
tokio::spawn(async move { alice_swarm_driver.run().await });
// Wait until alice has locked xmr and bob has locked btc
let (bob_state, (alice_state, alice_swarm_handle)) =
try_join(bob_fut, alice_xmr_locked_fut).await.unwrap();
let bob_state4 = if let BobState::BtcRefunded(state4) = bob_state {
state4
} else {
panic!("Bob in unexpected state");
};
let alice_db = Database::open(alice_db_datadir.path()).unwrap();
let (alice_state, _) = alice::swap::swap(
alice_state,
alice_swarm_handle,
alice_btc_wallet.clone(),
alice_xmr_wallet.clone(),
Config::regtest(),
alice_swap_id,
alice_db,
)
.await
.unwrap();
assert!(matches!(alice_state, AliceState::XmrRefunded));
let btc_alice_final = alice_btc_wallet.as_ref().balance().await.unwrap();
let btc_bob_final = bob_btc_wallet.as_ref().balance().await.unwrap();
// lock_tx_bitcoin_fee is determined by the wallet, it is not necessarily equal
// to TX_FEE
let lock_tx_bitcoin_fee = bob_btc_wallet
.transaction_fee(bob_state4.tx_lock_id())
.await
.unwrap();
assert_eq!(btc_alice_final, alice_btc_starting_balance);
// Alice or Bob could publish TxCancel. This means Bob could pay tx fees for
// TxCancel and TxRefund or only TxRefund
let btc_bob_final_alice_submitted_cancel = btc_bob_final
== bob_btc_starting_balance
- lock_tx_bitcoin_fee
- bitcoin::Amount::from_sat(bitcoin::TX_FEE);
let btc_bob_final_bob_submitted_cancel = btc_bob_final
== bob_btc_starting_balance
- lock_tx_bitcoin_fee
- bitcoin::Amount::from_sat(2 * bitcoin::TX_FEE);
assert!(btc_bob_final_alice_submitted_cancel || btc_bob_final_bob_submitted_cancel);
alice_xmr_wallet.as_ref().0.refresh().await.unwrap();
let xmr_alice_final = alice_xmr_wallet.as_ref().get_balance().await.unwrap();
assert_eq!(xmr_alice_final, xmr_to_swap);
bob_xmr_wallet.as_ref().0.refresh().await.unwrap();
let xmr_bob_final = bob_xmr_wallet.as_ref().get_balance().await.unwrap();
assert_eq!(xmr_bob_final, bob_xmr_starting_balance);
}