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658 lines (591 loc) · 19.9 KB
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use axum::{
body::Body,
extract::ConnectInfo,
http::{Request, StatusCode},
middleware::from_fn_with_state,
routing::{get, post},
Router,
};
use serde_json::{json, Value};
use std::net::{Ipv4Addr, SocketAddr};
use tower::ServiceExt;
use crate::{
auth::AuthConfig,
handlers,
rate_limit::{rate_limit_middleware, RateLimitConfig, RateLimiter},
rpc::FeeConfig,
state::AppState,
types::{
RouteDetails, SimulateRequest, SimulateResponse, TransactionStatus, TransactionStatusEvent,
},
};
/// Valid 56-char Stellar contract ID for use in tests.
const VALID_CONTRACT_ID: &str = "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABSC4";
fn test_app() -> Router {
let auth = AuthConfig {
enabled: false,
api_key: None,
};
let state = AppState::new(
// Use a localhost port that immediately refuses connections so RPC
// calls fail fast and the heuristic fallback is exercised.
"http://127.0.0.1:19999".to_string(),
"".to_string(),
"".to_string(),
auth,
FeeConfig::default(),
);
Router::new()
.route("/health", get(handlers::health))
.route("/simulate", post(handlers::simulate))
.route("/routes/:name", get(handlers::get_route))
.with_state(state)
}
fn rate_limited_health_app(max_requests: u32) -> Router {
let limiter = RateLimiter::new(RateLimitConfig {
max_requests,
window: std::time::Duration::from_secs(60),
});
Router::new()
.route("/health", get(handlers::health))
.route_layer(from_fn_with_state(limiter, rate_limit_middleware))
}
fn request_with_addr(path: &str, addr: SocketAddr) -> Request<Body> {
let mut request = Request::builder().uri(path).body(Body::empty()).unwrap();
request.extensions_mut().insert(ConnectInfo(addr));
request
}
fn request_with_addr_and_api_key(path: &str, addr: SocketAddr, api_key: &str) -> Request<Body> {
let mut request = Request::builder()
.uri(path)
.header("x-api-key", api_key)
.body(Body::empty())
.unwrap();
request.extensions_mut().insert(ConnectInfo(addr));
request
}
async fn spawn_ws_server() -> (std::net::SocketAddr, AppState) {
use axum::routing::get;
use tokio::net::TcpListener;
let auth = AuthConfig {
enabled: false,
api_key: None,
};
let state = AppState::new(
"http://localhost:1".to_string(),
"".to_string(),
"".to_string(),
auth.clone(),
FeeConfig::default(),
);
let app = Router::new()
.route("/ws", get(crate::websocket::ws_handler))
.with_state(state.clone());
let listener = TcpListener::bind(("127.0.0.1", 0)).await.unwrap();
let addr = listener.local_addr().unwrap();
let server = axum::serve(listener, app);
tokio::spawn(async move {
let _ = server.await;
});
(addr, state)
}
#[tokio::test]
async fn test_ws_subscribe_broadcast_unsubscribe_and_cleanup() {
use futures_util::{SinkExt, StreamExt};
use serde_json::json;
use std::time::Duration;
use tokio::time::timeout;
use tokio_tungstenite::connect_async;
use tokio_tungstenite::tungstenite::Message as TungMessage;
let (addr, state) = spawn_ws_server().await;
let url = format!("ws://{}/ws", addr);
let (ws_stream, _resp) = connect_async(&url).await.expect("connect");
let (mut write, mut read) = ws_stream.split();
// Subscribe to tx_id "tx123"
let subscribe = json!({ "action": "subscribe", "tx_id": "tx123" }).to_string();
write
.send(TungMessage::Text(subscribe.into()))
.await
.unwrap();
// Expect subscribed confirmation
let msg = timeout(Duration::from_secs(1), read.next())
.await
.unwrap()
.unwrap()
.unwrap();
if let TungMessage::Text(txt) = msg {
let v: serde_json::Value = serde_json::from_str(&txt).unwrap();
assert_eq!(v["msg_type"], "subscribed");
} else {
panic!("expected text message");
}
// Ensure subscriber count incremented
{
let entry = state.tx_subscribers.get("tx123").unwrap();
assert_eq!(*entry, 1usize);
}
// Broadcast an event and expect status_update
let event = TransactionStatusEvent {
tx_id: "tx123".to_string(),
status: TransactionStatus::Pending,
timestamp: "2026-06-17T00:00:00Z".to_string(),
message: Some("ok".to_string()),
};
state.broadcast_status(event.clone());
let msg = timeout(Duration::from_secs(1), read.next())
.await
.unwrap()
.unwrap()
.unwrap();
if let TungMessage::Text(txt) = msg {
let v: serde_json::Value = serde_json::from_str(&txt).unwrap();
assert_eq!(v["msg_type"], "status_update");
assert_eq!(v["data"]["tx_id"], "tx123");
} else {
panic!("expected text message");
}
// Unsubscribe
let unsubscribe = json!({ "action": "unsubscribe", "tx_id": "tx123" }).to_string();
write
.send(TungMessage::Text(unsubscribe.into()))
.await
.unwrap();
// Wait for unsubscribe acknowledgment before broadcasting to avoid a race
// between the server processing the unsubscribe and the broadcast arriving.
let ack = timeout(Duration::from_secs(1), read.next())
.await
.unwrap()
.unwrap()
.unwrap();
if let TungMessage::Text(txt) = ack {
let v: serde_json::Value = serde_json::from_str(&txt).unwrap();
assert_eq!(v["msg_type"], "unsubscribed");
}
// After confirmed unsubscribe, broadcast another event and expect no message
state.broadcast_status(event);
let res = timeout(Duration::from_millis(200), read.next()).await;
assert!(res.is_err(), "did not expect a message after unsubscribe");
// Disconnect: drop write/read by closing the sink
let _ = write.send(TungMessage::Close(None)).await;
// Give the server a moment to process disconnect
tokio::time::sleep(Duration::from_millis(100)).await;
// Subscriber cleanup should have removed the entry
assert!(state.tx_subscribers.get("tx123").is_none());
}
#[tokio::test]
async fn test_ws_multiple_subscriptions_and_duplicate_subscribe_counting() {
use futures_util::{SinkExt, StreamExt};
use serde_json::json;
use std::time::Duration;
use tokio::time::timeout;
use tokio_tungstenite::connect_async;
use tokio_tungstenite::tungstenite::Message as TungMessage;
let (addr, state) = spawn_ws_server().await;
let url = format!("ws://{}/ws", addr);
let (ws_stream, _resp) = connect_async(&url).await.expect("connect");
let (mut write, mut read) = ws_stream.split();
// Subscribe to txA and txB
let sub_a = json!({ "action": "subscribe", "tx_id": "txA" }).to_string();
let sub_b = json!({ "action": "subscribe", "tx_id": "txB" }).to_string();
write.send(TungMessage::Text(sub_a.into())).await.unwrap();
let _ = timeout(Duration::from_secs(1), read.next())
.await
.unwrap()
.unwrap()
.unwrap();
write.send(TungMessage::Text(sub_b.into())).await.unwrap();
let _ = timeout(Duration::from_secs(1), read.next())
.await
.unwrap()
.unwrap()
.unwrap();
// Broadcast events for each and ensure delivery
let event_a = TransactionStatusEvent {
tx_id: "txA".to_string(),
status: TransactionStatus::Submitted,
timestamp: "2026-06-17T00:00:01Z".to_string(),
message: None,
};
let event_b = TransactionStatusEvent {
tx_id: "txB".to_string(),
status: TransactionStatus::Confirmed,
timestamp: "2026-06-17T00:00:02Z".to_string(),
message: Some("done".to_string()),
};
state.broadcast_status(event_a.clone());
let msg = timeout(Duration::from_secs(1), read.next())
.await
.unwrap()
.unwrap()
.unwrap();
if let TungMessage::Text(txt) = msg {
let v: serde_json::Value = serde_json::from_str(&txt).unwrap();
assert_eq!(v["msg_type"], "status_update");
assert_eq!(v["data"]["tx_id"], "txA");
}
state.broadcast_status(event_b.clone());
let msg = timeout(Duration::from_secs(1), read.next())
.await
.unwrap()
.unwrap()
.unwrap();
if let TungMessage::Text(txt) = msg {
let v: serde_json::Value = serde_json::from_str(&txt).unwrap();
assert_eq!(v["msg_type"], "status_update");
assert_eq!(v["data"]["tx_id"], "txB");
}
// Subscribe to same tx twice
let sub_dup = json!({ "action": "subscribe", "tx_id": "dup" }).to_string();
write
.send(TungMessage::Text(sub_dup.clone().into()))
.await
.unwrap();
let _ = timeout(Duration::from_secs(1), read.next())
.await
.unwrap()
.unwrap()
.unwrap();
write.send(TungMessage::Text(sub_dup.into())).await.unwrap();
let _ = timeout(Duration::from_secs(1), read.next())
.await
.unwrap()
.unwrap()
.unwrap();
// Count should be 2
{
let entry = state.tx_subscribers.get("dup").unwrap();
assert_eq!(*entry, 2usize);
}
// Cleanup: close connection
let _ = write.send(TungMessage::Close(None)).await;
}
#[tokio::test]
async fn test_health_returns_200() {
let app = test_app();
let resp = app
.oneshot(
Request::builder()
.uri("/health")
.body(Body::empty())
.unwrap(),
)
.await
.unwrap();
assert_eq!(resp.status(), StatusCode::OK);
}
#[tokio::test]
async fn test_health_returns_ok_body() {
let app = test_app();
let resp = app
.oneshot(
Request::builder()
.uri("/health")
.body(Body::empty())
.unwrap(),
)
.await
.unwrap();
let body = axum::body::to_bytes(resp.into_body(), usize::MAX)
.await
.unwrap();
let json: Value = serde_json::from_slice(&body).unwrap();
assert_eq!(json["status"], "ok");
}
#[tokio::test]
async fn test_rate_limiter_rejects_requests_over_limit_for_same_ip() {
let app = rate_limited_health_app(2);
let addr = SocketAddr::from((Ipv4Addr::LOCALHOST, 5000));
let first = app
.clone()
.oneshot(request_with_addr("/health", addr))
.await
.unwrap();
assert_eq!(first.status(), StatusCode::OK);
let second = app
.clone()
.oneshot(request_with_addr("/health", addr))
.await
.unwrap();
assert_eq!(second.status(), StatusCode::OK);
let third = app
.oneshot(request_with_addr("/health", addr))
.await
.unwrap();
assert_eq!(third.status(), StatusCode::TOO_MANY_REQUESTS);
assert!(third.headers().contains_key("retry-after"));
let body = axum::body::to_bytes(third.into_body(), usize::MAX)
.await
.unwrap();
let json: Value = serde_json::from_slice(&body).unwrap();
assert_eq!(json["error"], "rate_limit_exceeded");
}
#[tokio::test]
async fn test_rate_limiter_uses_api_key_before_remote_ip() {
let app = rate_limited_health_app(1);
let addr = SocketAddr::from((Ipv4Addr::LOCALHOST, 5001));
let api_key_a = app
.clone()
.oneshot(request_with_addr_and_api_key("/health", addr, "key-a"))
.await
.unwrap();
assert_eq!(api_key_a.status(), StatusCode::OK);
let api_key_b = app
.clone()
.oneshot(request_with_addr_and_api_key("/health", addr, "key-b"))
.await
.unwrap();
assert_eq!(api_key_b.status(), StatusCode::OK);
let repeated_api_key_a = app
.oneshot(request_with_addr_and_api_key("/health", addr, "key-a"))
.await
.unwrap();
assert_eq!(repeated_api_key_a.status(), StatusCode::TOO_MANY_REQUESTS);
}
#[tokio::test]
async fn test_simulate_returns_200_with_valid_request() {
let app = test_app();
let body = json!({
"target": VALID_CONTRACT_ID,
"function": "transfer",
"amount": 1_000_000,
"fee_bps": 30,
"network_load_bps": 5000,
});
let resp = app
.oneshot(
Request::builder()
.method("POST")
.uri("/simulate")
.header("content-type", "application/json")
.body(Body::from(serde_json::to_vec(&body).unwrap()))
.unwrap(),
)
.await
.unwrap();
assert_eq!(resp.status(), StatusCode::OK);
}
#[tokio::test]
async fn test_simulate_response_has_fee_fields() {
let app = test_app();
let body = json!({ "target": VALID_CONTRACT_ID, "function": "transfer" });
let resp = app
.oneshot(
Request::builder()
.method("POST")
.uri("/simulate")
.header("content-type", "application/json")
.body(Body::from(serde_json::to_vec(&body).unwrap()))
.unwrap(),
)
.await
.unwrap();
let bytes = axum::body::to_bytes(resp.into_body(), usize::MAX)
.await
.unwrap();
let parsed: SimulateResponse = serde_json::from_slice(&bytes).unwrap();
assert!(parsed.estimated_fees.base_fee > 0);
assert!(parsed.estimated_fees.total_fee >= parsed.estimated_fees.base_fee);
assert_eq!(parsed.simulation.target, VALID_CONTRACT_ID);
assert_eq!(parsed.simulation.function, "transfer");
}
#[tokio::test]
async fn test_simulate_surge_pricing_at_high_load() {
let app = test_app();
let body = json!({
"target": VALID_CONTRACT_ID,
"function": "transfer",
"amount": 1_000_000,
"network_load_bps": 9000,
});
let resp = app
.oneshot(
Request::builder()
.method("POST")
.uri("/simulate")
.header("content-type", "application/json")
.body(Body::from(serde_json::to_vec(&body).unwrap()))
.unwrap(),
)
.await
.unwrap();
let bytes = axum::body::to_bytes(resp.into_body(), usize::MAX)
.await
.unwrap();
let parsed: SimulateResponse = serde_json::from_slice(&bytes).unwrap();
assert!(parsed.estimated_fees.high_load);
assert_eq!(parsed.estimated_fees.surge_multiplier, 200);
}
#[tokio::test]
async fn test_simulate_missing_target_returns_400() {
let app = test_app();
let body = json!({ "function": "transfer" });
let resp = app
.oneshot(
Request::builder()
.method("POST")
.uri("/simulate")
.header("content-type", "application/json")
.body(Body::from(serde_json::to_vec(&body).unwrap()))
.unwrap(),
)
.await
.unwrap();
// Missing required field → axum returns 422 Unprocessable Entity
assert!(
resp.status() == StatusCode::BAD_REQUEST
|| resp.status() == StatusCode::UNPROCESSABLE_ENTITY
);
}
#[tokio::test]
async fn test_simulate_missing_function_returns_400() {
let app = test_app();
let body = json!({ "target": VALID_CONTRACT_ID });
let resp = app
.oneshot(
Request::builder()
.method("POST")
.uri("/simulate")
.header("content-type", "application/json")
.body(Body::from(serde_json::to_vec(&body).unwrap()))
.unwrap(),
)
.await
.unwrap();
// Missing required field → axum returns 422 Unprocessable Entity
assert!(
resp.status() == StatusCode::BAD_REQUEST
|| resp.status() == StatusCode::UNPROCESSABLE_ENTITY
);
}
#[tokio::test]
async fn test_simulate_invalid_contract_id_returns_400() {
let app = test_app();
let body = json!({ "target": "not-a-valid-contract-id", "function": "transfer" });
let resp = app
.oneshot(
Request::builder()
.method("POST")
.uri("/simulate")
.header("content-type", "application/json")
.body(Body::from(serde_json::to_vec(&body).unwrap()))
.unwrap(),
)
.await
.unwrap();
assert_eq!(resp.status(), StatusCode::BAD_REQUEST);
let bytes = axum::body::to_bytes(resp.into_body(), usize::MAX)
.await
.unwrap();
let json: Value = serde_json::from_slice(&bytes).unwrap();
assert!(json["error"].as_str().unwrap().contains("56-character"));
}
#[tokio::test]
async fn test_simulate_contract_id_not_starting_with_c_returns_400() {
let app = test_app();
let body = json!({
"target": "GAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABSC4",
"function": "transfer",
});
let resp = app
.oneshot(
Request::builder()
.method("POST")
.uri("/simulate")
.header("content-type", "application/json")
.body(Body::from(serde_json::to_vec(&body).unwrap()))
.unwrap(),
)
.await
.unwrap();
assert_eq!(resp.status(), StatusCode::BAD_REQUEST);
}
#[tokio::test]
async fn test_simulate_empty_body_returns_400_or_422() {
let app = test_app();
let resp = app
.oneshot(
Request::builder()
.method("POST")
.uri("/simulate")
.header("content-type", "application/json")
.body(Body::from("{}"))
.unwrap(),
)
.await
.unwrap();
assert!(
resp.status() == StatusCode::BAD_REQUEST
|| resp.status() == StatusCode::UNPROCESSABLE_ENTITY
);
}
#[tokio::test]
async fn test_get_route_returns_500_when_core_not_configured() {
let app = test_app();
let resp = app
.oneshot(
Request::builder()
.uri("/routes/oracle")
.body(Body::empty())
.unwrap(),
)
.await
.unwrap();
assert_eq!(resp.status(), StatusCode::INTERNAL_SERVER_ERROR);
let bytes = axum::body::to_bytes(resp.into_body(), usize::MAX)
.await
.unwrap();
let json: Value = serde_json::from_slice(&bytes).unwrap();
assert!(json["error"].is_string());
}
#[tokio::test]
async fn test_get_route_error_response_is_json() {
let app = test_app();
let resp = app
.oneshot(
Request::builder()
.uri("/routes/nonexistent")
.body(Body::empty())
.unwrap(),
)
.await
.unwrap();
let bytes = axum::body::to_bytes(resp.into_body(), usize::MAX)
.await
.unwrap();
let json: Value = serde_json::from_slice(&bytes).unwrap();
assert!(json.get("error").is_some());
}
#[test]
fn test_simulate_request_serialization() {
let req = SimulateRequest {
target: "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABSC4".to_string(),
function: "transfer".to_string(),
amount: 1_000_000,
fee_bps: 30,
network_load_bps: 0,
route_details: Some(RouteDetails {
name: "swap".to_string(),
version: Some(1),
expected_outputs: Some(vec!["1000000".to_string()]),
}),
};
let json = serde_json::to_string(&req).unwrap();
let deserialized: SimulateRequest = serde_json::from_str(&json).unwrap();
assert_eq!(deserialized.target, req.target);
assert_eq!(deserialized.function, req.function);
}
#[test]
fn test_transaction_status_event_serialization() {
let event = TransactionStatusEvent {
tx_id: "tx_12345".to_string(),
status: TransactionStatus::Pending,
timestamp: "2026-05-28T00:00:00Z".to_string(),
message: Some("waiting".to_string()),
};
let json = serde_json::to_string(&event).unwrap();
let deserialized: TransactionStatusEvent = serde_json::from_str(&json).unwrap();
assert_eq!(deserialized.tx_id, event.tx_id);
assert_eq!(deserialized.status, event.status);
assert_eq!(deserialized.timestamp, event.timestamp);
assert_eq!(deserialized.message, event.message);
}