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

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Rust
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use crate::testutils::{init_alice, init_bob};
use get_port::get_port;
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use libp2p::Multiaddr;
use rand::rngs::OsRng;
use swap::{
bitcoin,
config::Config,
database::Database,
monero,
protocol::{alice, alice::AliceState, bob, bob::BobState},
seed::Seed,
};
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use tempfile::tempdir;
use testcontainers::clients::Cli;
use testutils::init_tracing;
use tokio::select;
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use uuid::Uuid;
pub mod testutils;
#[tokio::test]
async fn given_bob_restarts_after_xmr_is_locked_resume_swap() {
let _guard = init_tracing();
let cli = Cli::default();
let (
monero,
testutils::Containers {
bitcoind,
monerods: _monerods,
},
) = testutils::init_containers(&cli).await;
let btc_to_swap = bitcoin::Amount::from_sat(1_000_000);
let xmr_to_swap = monero::Amount::from_piconero(1_000_000_000_000);
let bob_btc_starting_balance = btc_to_swap * 10;
let bob_xmr_starting_balance = monero::Amount::from_piconero(0);
let alice_btc_starting_balance = bitcoin::Amount::ZERO;
let alice_xmr_starting_balance = xmr_to_swap * 10;
let port = get_port().expect("Failed to find a free port");
let alice_multiaddr: Multiaddr = format!("/ip4/127.0.0.1/tcp/{}", port)
.parse()
.expect("failed to parse Alice's address");
let (
alice_state,
mut alice_event_loop,
alice_event_loop_handle,
alice_btc_wallet,
alice_xmr_wallet,
alice_db,
) = init_alice(
&bitcoind,
&monero,
btc_to_swap,
xmr_to_swap,
alice_xmr_starting_balance,
alice_multiaddr.clone(),
Config::regtest(),
Seed::random().unwrap(),
)
.await;
let alice_peer_id = alice_event_loop.peer_id();
let (bob_state, bob_event_loop_1, bob_event_loop_handle_1, bob_btc_wallet, bob_xmr_wallet, _) =
init_bob(
alice_multiaddr.clone(),
alice_peer_id.clone(),
&bitcoind,
&monero,
btc_to_swap,
bob_btc_starting_balance,
xmr_to_swap,
Config::regtest(),
)
.await;
let alice_fut = alice::swap::swap(
alice_state,
alice_event_loop_handle,
alice_btc_wallet.clone(),
alice_xmr_wallet.clone(),
Config::regtest(),
Uuid::new_v4(),
alice_db,
);
let bob_swap_id = Uuid::new_v4();
let bob_db_datadir = tempdir().unwrap();
let bob_xmr_locked_fut = {
let bob_db = Database::open(bob_db_datadir.path()).unwrap();
bob::swap::run_until(
bob_state,
bob::swap::is_xmr_locked,
bob_event_loop_handle_1,
bob_db,
bob_btc_wallet.clone(),
bob_xmr_wallet.clone(),
OsRng,
bob_swap_id,
)
};
tokio::spawn(async move { alice_event_loop.run().await });
let alice_fut_handle = tokio::spawn(alice_fut);
// We are selecting with bob_event_loop_1 so that we stop polling on it once
// bob reaches `xmr locked` state.
let bob_restart_state = select! {
res = bob_xmr_locked_fut => res.unwrap(),
_ = bob_event_loop_1.run() => panic!("The event loop should never finish")
};
let (bob_event_loop_2, bob_event_loop_handle_2) =
testutils::init_bob_event_loop(alice_peer_id, alice_multiaddr);
let bob_fut = bob::swap::swap(
bob_restart_state,
bob_event_loop_handle_2,
Database::open(bob_db_datadir.path()).unwrap(),
bob_btc_wallet.clone(),
bob_xmr_wallet.clone(),
OsRng,
bob_swap_id,
);
let bob_final_state = select! {
bob_final_state = bob_fut => bob_final_state.unwrap(),
_ = bob_event_loop_2.run() => panic!("Event loop is not expected to stop")
};
assert!(matches!(bob_final_state, BobState::XmrRedeemed));
// Wait for Alice to finish too.
let alice_final_state = alice_fut_handle.await.unwrap().unwrap();
assert!(matches!(alice_final_state, AliceState::BtcRedeemed));
let btc_alice_final = alice_btc_wallet.as_ref().balance().await.unwrap();
let btc_bob_final = bob_btc_wallet.as_ref().balance().await.unwrap();
let xmr_alice_final = alice_xmr_wallet.as_ref().get_balance().await.unwrap();
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bob_xmr_wallet.as_ref().inner.refresh().await.unwrap();
let xmr_bob_final = bob_xmr_wallet.as_ref().get_balance().await.unwrap();
assert_eq!(
btc_alice_final,
alice_btc_starting_balance + btc_to_swap - bitcoin::Amount::from_sat(bitcoin::TX_FEE)
);
assert!(btc_bob_final <= bob_btc_starting_balance - btc_to_swap);
assert!(xmr_alice_final <= alice_xmr_starting_balance - xmr_to_swap);
assert_eq!(xmr_bob_final, bob_xmr_starting_balance + xmr_to_swap);
}