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//! Tests for proxy middleware layers
#[cfg(test)]
mod tests {
use axum::body::Body;
use axum::http::header;
use http::Request;
use uuid::Uuid;
mod request_id_middleware {
use super::*;
#[tokio::test]
async fn test_request_id_generation() {
// Test that request ID middleware generates a valid UUID v7
let _request = Request::builder()
.method("GET")
.uri("/test")
.body(Body::empty())
.unwrap();
// TODO: Apply request ID middleware
// let response = middleware.oneshot(request).await.unwrap();
// Should have X-Request-ID header with valid UUID v7
// assert!(response.headers().contains_key("x-request-id"));
// let request_id = response.headers().get("x-request-id").unwrap();
// let uuid = Uuid::parse_str(request_id.to_str().unwrap()).unwrap();
// assert_eq!(uuid.get_version_num(), 7);
}
#[tokio::test]
async fn test_request_id_passthrough() {
// Test that existing request IDs are preserved
let existing_id = Uuid::now_v7().to_string();
let _request = Request::builder()
.method("GET")
.uri("/test")
.header("x-request-id", &existing_id)
.body(Body::empty())
.unwrap();
// TODO: Apply request ID middleware
// let response = middleware.oneshot(request).await.unwrap();
// Should preserve the existing request ID
// assert_eq!(
// response.headers().get("x-request-id").unwrap().to_str().unwrap(),
// existing_id
// );
}
#[tokio::test]
async fn test_request_id_propagation() {
// Test that request ID is propagated through the request chain
let _request = Request::builder()
.method("POST")
.uri("/api/v1/completion")
.body(Body::from("test body"))
.unwrap();
// TODO: Apply middleware stack with request ID
// let response = middleware_stack.oneshot(request).await.unwrap();
// Request ID should be available in both request and response
// assert!(response.headers().contains_key("x-request-id"));
}
}
mod auth_middleware {
use super::*;
#[tokio::test]
async fn test_valid_api_key() {
// Test that valid API keys are accepted
let valid_key = "valid-api-key-123";
let _request = Request::builder()
.method("POST")
.uri("/api/v1/completion")
.header(header::AUTHORIZATION, format!("Bearer {valid_key}"))
.body(Body::empty())
.unwrap();
// TODO: Apply auth middleware with configured valid keys
// let response = auth_middleware.oneshot(request).await.unwrap();
// Should pass through with 200 OK
// assert_eq!(response.status(), StatusCode::OK);
}
#[tokio::test]
async fn test_missing_api_key() {
// Test that missing API keys are rejected
let _request = Request::builder()
.method("POST")
.uri("/api/v1/completion")
.body(Body::empty())
.unwrap();
// TODO: Apply auth middleware
// let response = auth_middleware.oneshot(request).await.unwrap();
// Should return 401 Unauthorized
// assert_eq!(response.status(), StatusCode::UNAUTHORIZED);
}
#[tokio::test]
async fn test_invalid_api_key() {
// Test that invalid API keys are rejected
let invalid_key = "invalid-api-key";
let _request = Request::builder()
.method("POST")
.uri("/api/v1/completion")
.header(header::AUTHORIZATION, format!("Bearer {invalid_key}"))
.body(Body::empty())
.unwrap();
// TODO: Apply auth middleware
// let response = auth_middleware.oneshot(request).await.unwrap();
// Should return 401 Unauthorized
// assert_eq!(response.status(), StatusCode::UNAUTHORIZED);
}
#[tokio::test]
async fn test_malformed_auth_header() {
// Test that malformed auth headers are rejected
let _request = Request::builder()
.method("POST")
.uri("/api/v1/completion")
.header(header::AUTHORIZATION, "NotBearer token")
.body(Body::empty())
.unwrap();
// TODO: Apply auth middleware
// let response = auth_middleware.oneshot(request).await.unwrap();
// Should return 401 Unauthorized
// assert_eq!(response.status(), StatusCode::UNAUTHORIZED);
}
#[tokio::test]
async fn test_auth_bypass_for_health_check() {
// Test that health check endpoint bypasses auth
let _request = Request::builder()
.method("GET")
.uri("/health")
.body(Body::empty())
.unwrap();
// TODO: Apply auth middleware
// let response = auth_middleware.oneshot(request).await.unwrap();
// Should pass through without auth
// assert_eq!(response.status(), StatusCode::OK);
}
}
mod error_handling_middleware {
use super::*;
#[tokio::test]
async fn test_proxy_error_formatting() {
// Test that ProxyError is properly formatted in responses
// This would test the error handling middleware converting
// internal errors to proper HTTP responses
// TODO: Create a service that returns a ProxyError
// let failing_service = tower::service_fn(|_| async {
// Err::<Response<Body>, ProxyError>(ProxyError::RequestTimeout(Duration::from_secs(30)))
// });
// TODO: Wrap with error handling middleware
// let response = error_middleware.oneshot(request).await.unwrap();
// Should return appropriate status and error message
// assert_eq!(response.status(), StatusCode::REQUEST_TIMEOUT);
// let body = hyper::body::to_bytes(response.into_body()).await.unwrap();
// let error_json: serde_json::Value = serde_json::from_slice(&body).unwrap();
// assert_eq!(error_json["error"]["type"], "request_timeout");
}
#[tokio::test]
async fn test_panic_recovery() {
// Test that panics are caught and converted to 500 errors
// TODO: Create a service that panics
// let panicking_service = tower::service_fn(|_| async {
// panic!("Unexpected error!");
// });
// TODO: Wrap with panic recovery middleware
// let response = panic_middleware.oneshot(request).await.unwrap();
// Should return 500 Internal Server Error
// assert_eq!(response.status(), StatusCode::INTERNAL_SERVER_ERROR);
}
#[tokio::test]
async fn test_error_correlation() {
// Test that errors include request ID for correlation
let request_id = Uuid::now_v7().to_string();
let _request = Request::builder()
.method("POST")
.uri("/api/v1/completion")
.header("x-request-id", &request_id)
.body(Body::empty())
.unwrap();
// TODO: Apply error handling with request ID correlation
// let response = error_middleware.oneshot(request).await.unwrap();
// Error response should include request ID
// let body = hyper::body::to_bytes(response.into_body()).await.unwrap();
// let error_json: serde_json::Value = serde_json::from_slice(&body).unwrap();
// assert_eq!(error_json["request_id"], request_id);
}
}
mod combined_middleware {
use super::*;
#[tokio::test]
async fn test_middleware_ordering() {
// Test that middleware layers are applied in correct order:
// 1. Request ID (first, so all logs have request ID)
// 2. Error handling (catches errors from auth and below)
// 3. Auth (validates before processing)
// 4. Actual proxy handler
let _request = Request::builder()
.method("POST")
.uri("/api/v1/completion")
.header(header::AUTHORIZATION, "Bearer valid-key")
.body(Body::from("test"))
.unwrap();
// TODO: Apply full middleware stack
// let response = middleware_stack.oneshot(request).await.unwrap();
// Should have request ID from first middleware
// assert!(response.headers().contains_key("x-request-id"));
// Should pass auth and return success
// assert_eq!(response.status(), StatusCode::OK);
}
#[tokio::test]
async fn test_middleware_error_propagation() {
// Test that errors from inner middleware are properly handled
let _request = Request::builder()
.method("POST")
.uri("/api/v1/completion")
// Missing auth header
.body(Body::empty())
.unwrap();
// TODO: Apply full middleware stack
// let response = middleware_stack.oneshot(request).await.unwrap();
// Should have request ID even on auth failure
// assert!(response.headers().contains_key("x-request-id"));
// Should return 401 from auth middleware
// assert_eq!(response.status(), StatusCode::UNAUTHORIZED);
}
}
mod logging_middleware {
use super::*;
#[tokio::test]
async fn test_request_logging() {
// Test that requests are logged with appropriate details
let _request = Request::builder()
.method("POST")
.uri("/api/v1/completion")
.header("x-request-id", Uuid::now_v7().to_string())
.header(header::CONTENT_LENGTH, "100")
.body(Body::from("test body"))
.unwrap();
// TODO: Apply logging middleware
// Should log: method, path, request_id, content_length
// let response = logging_middleware.oneshot(request).await.unwrap();
// Verify log output contains expected fields
// (Would need to capture logs in test)
}
#[tokio::test]
async fn test_response_logging() {
// Test that responses are logged with timing info
let _request = Request::builder()
.method("GET")
.uri("/health")
.body(Body::empty())
.unwrap();
// TODO: Apply logging middleware with timing
// let start = Instant::now();
// let response = logging_middleware.oneshot(request).await.unwrap();
// let duration = start.elapsed();
// Should log: status, duration_ms, request_id
// assert!(duration.as_millis() > 0);
}
}
mod rate_limiting_middleware {
use super::*;
#[tokio::test]
async fn test_rate_limit_per_api_key() {
// Test that rate limiting is applied per API key
let api_key = "test-key";
// TODO: Create rate limiter with low limit for testing
// let rate_limiter = RateLimiter::new(2, Duration::from_secs(1));
// First two requests should succeed
for _ in 0..2 {
let _request = Request::builder()
.method("POST")
.uri("/api/v1/completion")
.header(header::AUTHORIZATION, format!("Bearer {api_key}"))
.body(Body::empty())
.unwrap();
// let response = rate_limit_middleware.oneshot(request).await.unwrap();
// assert_eq!(response.status(), StatusCode::OK);
}
// Third request should be rate limited
let _request = Request::builder()
.method("POST")
.uri("/api/v1/completion")
.header(header::AUTHORIZATION, format!("Bearer {api_key}"))
.body(Body::empty())
.unwrap();
// let response = rate_limit_middleware.oneshot(request).await.unwrap();
// assert_eq!(response.status(), StatusCode::TOO_MANY_REQUESTS);
// assert!(response.headers().contains_key("retry-after"));
}
#[tokio::test]
async fn test_rate_limit_headers() {
// Test that rate limit headers are included
let _request = Request::builder()
.method("POST")
.uri("/api/v1/completion")
.header(header::AUTHORIZATION, "Bearer test-key")
.body(Body::empty())
.unwrap();
// TODO: Apply rate limiting middleware
// let response = rate_limit_middleware.oneshot(request).await.unwrap();
// Should include rate limit headers
// assert!(response.headers().contains_key("x-ratelimit-limit"));
// assert!(response.headers().contains_key("x-ratelimit-remaining"));
// assert!(response.headers().contains_key("x-ratelimit-reset"));
}
}
}