From bf39c34ada57f97171308fa1d55b9a5d874b0b7c Mon Sep 17 00:00:00 2001
From: Daniel Karzel <daniel@comit.network>
Date: Mon, 14 Dec 2020 20:52:06 +1100
Subject: [PATCH] Alice restart and refund test if restarted before encsig
 learner

---
 swap/tests/alice_safe_restart.rs | 122 +++++++++++++++++++++++++++++++
 1 file changed, 122 insertions(+)

diff --git a/swap/tests/alice_safe_restart.rs b/swap/tests/alice_safe_restart.rs
index cde35821..7bd19ea2 100644
--- a/swap/tests/alice_safe_restart.rs
+++ b/swap/tests/alice_safe_restart.rs
@@ -128,3 +128,125 @@ async fn given_alice_restarts_after_encsig_is_learned_resume_swap() {
 
     // TODO: Additionally assert balances
 }
+
+// If Alice stops before learning the encsig that Bob sent, she has to refund
+// because the connection with Bob is not re-dialed at the moment!
+// TODO: Alice goes till "Alice acknowledged message 3 received" which is a bit
+//  awkward. Validate that that this is printed, but the state not saved.
+#[tokio::test]
+async fn given_alice_restarts_after_xmr_is_locked_refund_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 = xmr_btc::monero::Amount::from_piconero(1_000_000_000_000);
+
+    let bob_btc_starting_balance = btc_to_swap * 10;
+    let alice_xmr_starting_balance = xmr_to_swap * 10;
+
+    let alice_multiaddr: Multiaddr = "/ip4/127.0.0.1/tcp/9877"
+        .parse()
+        .expect("failed to parse Alice's address");
+
+    let config = Config::regtest();
+
+    let (
+        start_state,
+        mut alice_event_loop,
+        alice_event_loop_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,
+    )
+    .await;
+
+    let (bob_state, bob_event_loop, bob_event_loop_handle, bob_btc_wallet, bob_xmr_wallet, bob_db) =
+        init_bob(
+            alice_multiaddr.clone(),
+            &bitcoind,
+            &monero,
+            btc_to_swap,
+            bob_btc_starting_balance,
+            xmr_to_swap,
+            config,
+        )
+        .await;
+
+    let _ = tokio::spawn(async move {
+        bob::swap::swap(
+            bob_state,
+            bob_event_loop_handle,
+            bob_db,
+            bob_btc_wallet.clone(),
+            bob_xmr_wallet.clone(),
+            OsRng,
+            Uuid::new_v4(),
+        )
+        .await
+    });
+
+    let _bob_swarm_fut = tokio::spawn(async move { bob_event_loop.run().await });
+
+    let alice_db_datadir = tempdir().unwrap();
+    let alice_db = Database::open(alice_db_datadir.path()).unwrap();
+
+    let _alice_swarm_fut = tokio::spawn(async move { alice_event_loop.run().await });
+
+    let alice_swap_id = Uuid::new_v4();
+
+    let (alice_state, _) = alice::swap::run_until(
+        start_state,
+        alice::swap::is_xmr_locked,
+        alice_event_loop_handle,
+        alice_btc_wallet.clone(),
+        alice_xmr_wallet.clone(),
+        Config::regtest(),
+        alice_swap_id,
+        alice_db,
+    )
+    .await
+    .unwrap();
+
+    assert!(matches!(alice_state, AliceState::XmrLocked {..}));
+
+    let alice_db = Database::open(alice_db_datadir.path()).unwrap();
+    let state_before_restart = alice_db.get_state(alice_swap_id).unwrap();
+
+    if let swap::state::Swap::Alice(state) = state_before_restart.clone() {
+        assert!(matches!(state, swap::state::Alice::XmrLocked {..}));
+    }
+
+    let (mut event_loop_after_restart, event_loop_handle_after_restart) =
+        testutils::init_alice_eventloop(alice_multiaddr);
+    let _alice_swarm_fut = tokio::spawn(async move { event_loop_after_restart.run().await });
+
+    let alice_state = alice::swap::recover(
+        event_loop_handle_after_restart,
+        alice_btc_wallet,
+        alice_xmr_wallet,
+        Config::regtest(),
+        alice_swap_id,
+        alice_db,
+    )
+    .await
+    .unwrap();
+
+    assert!(matches!(alice_state, AliceState::XmrRefunded {..}));
+
+    // TODO: Additionally assert balances
+}