api_endpoints_test.rs 70 KB
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mod common;

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use std::sync::Arc;

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use axum::{
    body::Body,
    extract::Request,
    http::{header::CONTENT_TYPE, StatusCode},
};
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use common::mock_worker::{HealthStatus, MockWorker, MockWorkerConfig, WorkerType};
use reqwest::Client;
use serde_json::json;
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use sglang_router_rs::{
    config::{
        CircuitBreakerConfig, ConnectionMode, PolicyConfig, RetryConfig, RouterConfig, RoutingMode,
    },
    core::WorkerManager,
    routers::{RouterFactory, RouterTrait},
    server::AppContext,
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};
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use tower::ServiceExt;
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/// Test context that manages mock workers
struct TestContext {
    workers: Vec<MockWorker>,
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    router: Arc<dyn RouterTrait>,
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    _client: Client,
    _config: RouterConfig,
    app_context: Arc<AppContext>,
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}

impl TestContext {
    async fn new(worker_configs: Vec<MockWorkerConfig>) -> Self {
        // Create default router config
        let config = RouterConfig {
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            chat_template: None,
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            mode: RoutingMode::Regular {
                worker_urls: vec![],
            },
            policy: PolicyConfig::Random,
            host: "127.0.0.1".to_string(),
            port: 3002,
            max_payload_size: 256 * 1024 * 1024,
            request_timeout_secs: 600,
            worker_startup_timeout_secs: 1,
            worker_startup_check_interval_secs: 1,
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            discovery: None,
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            dp_aware: false,
            api_key: None,
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            metrics: None,
            log_dir: None,
            log_level: None,
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            request_id_headers: None,
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            max_concurrent_requests: 64,
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            queue_size: 0,
            queue_timeout_secs: 60,
            rate_limit_tokens_per_second: None,
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            cors_allowed_origins: vec![],
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            retry: RetryConfig::default(),
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            circuit_breaker: CircuitBreakerConfig::default(),
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            disable_retries: false,
            disable_circuit_breaker: false,
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            health_check: sglang_router_rs::config::HealthCheckConfig::default(),
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            enable_igw: false,
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            connection_mode: ConnectionMode::Http,
            model_path: None,
            tokenizer_path: None,
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            history_backend: sglang_router_rs::config::HistoryBackend::Memory,
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            oracle: None,
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            reasoning_parser: None,
            tool_call_parser: None,
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            tokenizer_cache: sglang_router_rs::config::TokenizerCacheConfig::default(),
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        };

        Self::new_with_config(config, worker_configs).await
    }

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    async fn new_with_config(
        mut config: RouterConfig,
        worker_configs: Vec<MockWorkerConfig>,
    ) -> Self {
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        let mut workers = Vec::new();
        let mut worker_urls = Vec::new();

        // Start mock workers if any
        for worker_config in worker_configs {
            let mut worker = MockWorker::new(worker_config);
            let url = worker.start().await.unwrap();
            worker_urls.push(url);
            workers.push(worker);
        }

        if !workers.is_empty() {
            tokio::time::sleep(tokio::time::Duration::from_millis(200)).await;
        }

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        // Update config with worker URLs if not already set
        if let RoutingMode::Regular {
            worker_urls: ref mut urls,
        } = config.mode
        {
            if urls.is_empty() {
                *urls = worker_urls.clone();
            }
        }

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        let client = Client::builder()
            .timeout(std::time::Duration::from_secs(config.request_timeout_secs))
            .build()
            .unwrap();

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        // Create app context
        let app_context = common::create_test_context(config.clone());
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        // Initialize workers in the registry before creating router
        if !worker_urls.is_empty() {
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            WorkerManager::initialize_workers(&config, &app_context.worker_registry, None)
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                .await
                .expect("Failed to initialize workers");
        }

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        // Create router
        let router = RouterFactory::create_router(&app_context).await.unwrap();
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        let router = Arc::from(router);
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        // Wait for router to discover workers
        if !workers.is_empty() {
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            tokio::time::sleep(tokio::time::Duration::from_millis(500)).await;
        }

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        Self {
            workers,
            router,
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            _client: client,
            _config: config,
            app_context,
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        }
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    }

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    async fn create_app(&self) -> axum::Router {
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        common::test_app::create_test_app_with_context(
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            Arc::clone(&self.router),
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            Arc::clone(&self.app_context),
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        )
    }

    async fn shutdown(mut self) {
        for worker in &mut self.workers {
            worker.stop().await;
        }
    }
}

#[cfg(test)]
mod health_tests {
    use super::*;

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    #[tokio::test]
    async fn test_liveness_endpoint() {
        let ctx = TestContext::new(vec![]).await;
        let app = ctx.create_app().await;
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        let req = Request::builder()
            .method("GET")
            .uri("/liveness")
            .body(Body::empty())
            .unwrap();
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        let resp = app.oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::OK);
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        ctx.shutdown().await;
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    }

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    #[tokio::test]
    async fn test_readiness_with_healthy_workers() {
        let ctx = TestContext::new(vec![MockWorkerConfig {
            port: 18001,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
        }])
        .await;

        let app = ctx.create_app().await;

        let req = Request::builder()
            .method("GET")
            .uri("/readiness")
            .body(Body::empty())
            .unwrap();
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        let resp = app.oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::OK);
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        ctx.shutdown().await;
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    }

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    #[tokio::test]
    async fn test_readiness_with_unhealthy_workers() {
        let ctx = TestContext::new(vec![]).await;
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        let app = ctx.create_app().await;
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        let req = Request::builder()
            .method("GET")
            .uri("/readiness")
            .body(Body::empty())
            .unwrap();
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        let resp = app.oneshot(req).await.unwrap();
        // With no workers, readiness should return SERVICE_UNAVAILABLE
        assert_eq!(resp.status(), StatusCode::SERVICE_UNAVAILABLE);
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        ctx.shutdown().await;
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    }

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    #[tokio::test]
    async fn test_health_endpoint_details() {
        let ctx = TestContext::new(vec![
            MockWorkerConfig {
                port: 18003,
                worker_type: WorkerType::Regular,
                health_status: HealthStatus::Healthy,
                response_delay_ms: 0,
                fail_rate: 0.0,
            },
            MockWorkerConfig {
                port: 18004,
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                worker_type: WorkerType::Regular,
                health_status: HealthStatus::Healthy,
                response_delay_ms: 0,
                fail_rate: 0.0,
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            },
        ])
        .await;
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        let app = ctx.create_app().await;
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        let req = Request::builder()
            .method("GET")
            .uri("/health")
            .body(Body::empty())
            .unwrap();
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        let resp = app.oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::OK);
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        ctx.shutdown().await;
    }

    #[tokio::test]
    async fn test_health_generate_endpoint() {
        let ctx = TestContext::new(vec![MockWorkerConfig {
            port: 18005,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
        }])
        .await;

        let app = ctx.create_app().await;

        let req = Request::builder()
            .method("GET")
            .uri("/health_generate")
            .body(Body::empty())
            .unwrap();

        let resp = app.oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::OK);

        let body = axum::body::to_bytes(resp.into_body(), usize::MAX)
            .await
            .unwrap();
        let body_json: serde_json::Value = serde_json::from_slice(&body).unwrap();
        assert!(body_json.is_object());

        ctx.shutdown().await;
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    }
}

#[cfg(test)]
mod generation_tests {
    use super::*;

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    #[tokio::test]
    async fn test_generate_success() {
        let ctx = TestContext::new(vec![MockWorkerConfig {
            port: 18101,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
        }])
        .await;

        let app = ctx.create_app().await;

        let payload = json!({
            "text": "Hello, world!",
            "stream": false
        });
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        let req = Request::builder()
            .method("POST")
            .uri("/generate")
            .header(CONTENT_TYPE, "application/json")
            .body(Body::from(serde_json::to_string(&payload).unwrap()))
            .unwrap();
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        let resp = app.oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::OK);
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        let body = axum::body::to_bytes(resp.into_body(), usize::MAX)
            .await
            .unwrap();
        let body_json: serde_json::Value = serde_json::from_slice(&body).unwrap();
        assert!(body_json.get("text").is_some());
        assert!(body_json.get("meta_info").is_some());
        let meta_info = &body_json["meta_info"];
        assert!(meta_info.get("finish_reason").is_some());
        assert_eq!(meta_info["finish_reason"]["type"], "stop");

        ctx.shutdown().await;
    }
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    #[tokio::test]
    async fn test_generate_streaming() {
        let ctx = TestContext::new(vec![MockWorkerConfig {
            port: 18102,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
        }])
        .await;

        let app = ctx.create_app().await;

        let payload = json!({
            "text": "Stream test",
            "stream": true
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        });

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        let req = Request::builder()
            .method("POST")
            .uri("/generate")
            .header(CONTENT_TYPE, "application/json")
            .body(Body::from(serde_json::to_string(&payload).unwrap()))
            .unwrap();
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        let resp = app.oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::OK);
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        // For streaming responses, the router might use chunked encoding or other streaming mechanisms
        // The exact content-type can vary based on the router implementation
        // Just verify we got a successful response
        // Note: In a real implementation, we'd check for text/event-stream or appropriate streaming headers
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        ctx.shutdown().await;
    }
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    #[tokio::test]
    async fn test_generate_with_worker_failure() {
        let ctx = TestContext::new(vec![MockWorkerConfig {
            port: 18103,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 1.0, // Always fail
        }])
        .await;

        let app = ctx.create_app().await;

        let payload = json!({
            "text": "This should fail",
            "stream": false
        });
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        let req = Request::builder()
            .method("POST")
            .uri("/generate")
            .header(CONTENT_TYPE, "application/json")
            .body(Body::from(serde_json::to_string(&payload).unwrap()))
            .unwrap();
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        let resp = app.oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::INTERNAL_SERVER_ERROR);
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        ctx.shutdown().await;
    }
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    #[tokio::test]
    async fn test_v1_chat_completions_success() {
        let ctx = TestContext::new(vec![MockWorkerConfig {
            port: 18104,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
        }])
        .await;

        let app = ctx.create_app().await;

        let payload = json!({
            "model": "test-model",
            "messages": [
                {"role": "user", "content": "Hello!"}
            ],
            "stream": false
        });
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        let req = Request::builder()
            .method("POST")
            .uri("/v1/chat/completions")
            .header(CONTENT_TYPE, "application/json")
            .body(Body::from(serde_json::to_string(&payload).unwrap()))
            .unwrap();
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        let resp = app.oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::OK);
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        let body = axum::body::to_bytes(resp.into_body(), usize::MAX)
            .await
            .unwrap();
        let body_json: serde_json::Value = serde_json::from_slice(&body).unwrap();
        assert!(body_json.get("choices").is_some());
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        ctx.shutdown().await;
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    }
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}
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#[cfg(test)]
mod model_info_tests {
    use super::*;
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    #[tokio::test]
    async fn test_get_server_info() {
        let ctx = TestContext::new(vec![MockWorkerConfig {
            port: 18201,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
        }])
        .await;

        let app = ctx.create_app().await;

        let req = Request::builder()
            .method("GET")
            .uri("/get_server_info")
            .body(Body::empty())
            .unwrap();
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        let resp = app.oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::OK);
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        let body = axum::body::to_bytes(resp.into_body(), usize::MAX)
            .await
            .unwrap();
        let body_json: serde_json::Value = serde_json::from_slice(&body).unwrap();
        assert!(body_json.is_object());
        // Check for actual sglang server fields
        assert!(body_json.get("version").is_some());
        assert!(body_json.get("model_path").is_some());
        assert!(body_json.get("tokenizer_path").is_some());
        assert!(body_json.get("port").is_some());
        assert!(body_json.get("max_num_batched_tokens").is_some());
        assert!(body_json.get("schedule_policy").is_some());

        ctx.shutdown().await;
    }
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    #[tokio::test]
    async fn test_get_model_info() {
        let ctx = TestContext::new(vec![MockWorkerConfig {
            port: 18202,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
        }])
        .await;

        let app = ctx.create_app().await;

        let req = Request::builder()
            .method("GET")
            .uri("/get_model_info")
            .body(Body::empty())
            .unwrap();
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        let resp = app.oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::OK);
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        let body = axum::body::to_bytes(resp.into_body(), usize::MAX)
            .await
            .unwrap();
        let body_json: serde_json::Value = serde_json::from_slice(&body).unwrap();
        assert!(body_json.is_object());
        // Check for actual sglang model info fields
        assert_eq!(
            body_json.get("model_path").and_then(|v| v.as_str()),
            Some("mock-model-path")
        );
        assert_eq!(
            body_json.get("tokenizer_path").and_then(|v| v.as_str()),
            Some("mock-tokenizer-path")
        );
        assert_eq!(
            body_json.get("is_generation").and_then(|v| v.as_bool()),
            Some(true)
        );
        assert!(body_json.get("preferred_sampling_params").is_some());

        ctx.shutdown().await;
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    }

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    #[tokio::test]
    async fn test_v1_models() {
        let ctx = TestContext::new(vec![MockWorkerConfig {
            port: 18203,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
        }])
        .await;

        let app = ctx.create_app().await;

        let req = Request::builder()
            .method("GET")
            .uri("/v1/models")
            .body(Body::empty())
            .unwrap();
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        let resp = app.oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::OK);
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        let body = axum::body::to_bytes(resp.into_body(), usize::MAX)
            .await
            .unwrap();
        let body_json: serde_json::Value = serde_json::from_slice(&body).unwrap();
        assert!(body_json.get("object").is_some());
        assert_eq!(
            body_json.get("object").and_then(|v| v.as_str()),
            Some("list")
        );

        let data = body_json.get("data").and_then(|v| v.as_array());
        assert!(data.is_some());

        let models = data.unwrap();
        assert!(!models.is_empty());

        let first_model = &models[0];
        assert_eq!(
            first_model.get("id").and_then(|v| v.as_str()),
            Some("mock-model")
        );
        assert_eq!(
            first_model.get("object").and_then(|v| v.as_str()),
            Some("model")
        );
        assert!(first_model.get("created").is_some());
        assert_eq!(
            first_model.get("owned_by").and_then(|v| v.as_str()),
            Some("organization-owner")
        );

        ctx.shutdown().await;
    }
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    #[tokio::test]
    async fn test_model_info_with_no_workers() {
        let ctx = TestContext::new(vec![]).await;
        let app = ctx.create_app().await;
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        let req = Request::builder()
            .method("GET")
            .uri("/get_server_info")
            .body(Body::empty())
            .unwrap();
        let resp = app.clone().oneshot(req).await.unwrap();
        // Router may return various error codes when no workers
        assert!(
            resp.status() == StatusCode::OK
                || resp.status() == StatusCode::SERVICE_UNAVAILABLE
                || resp.status() == StatusCode::NOT_FOUND
                || resp.status() == StatusCode::INTERNAL_SERVER_ERROR,
            "Unexpected status code: {:?}",
            resp.status()
        );

        let req = Request::builder()
            .method("GET")
            .uri("/get_model_info")
            .body(Body::empty())
            .unwrap();
        let resp = app.clone().oneshot(req).await.unwrap();
        // Router may return various error codes when no workers
        assert!(
            resp.status() == StatusCode::OK
                || resp.status() == StatusCode::SERVICE_UNAVAILABLE
                || resp.status() == StatusCode::NOT_FOUND
                || resp.status() == StatusCode::INTERNAL_SERVER_ERROR,
            "Unexpected status code: {:?}",
            resp.status()
        );

        let req = Request::builder()
            .method("GET")
            .uri("/v1/models")
            .body(Body::empty())
            .unwrap();
        let resp = app.oneshot(req).await.unwrap();
        // Router may return various error codes when no workers
        assert!(
            resp.status() == StatusCode::OK
                || resp.status() == StatusCode::SERVICE_UNAVAILABLE
                || resp.status() == StatusCode::NOT_FOUND
                || resp.status() == StatusCode::INTERNAL_SERVER_ERROR,
            "Unexpected status code: {:?}",
            resp.status()
        );

        ctx.shutdown().await;
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    }

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    #[tokio::test]
    async fn test_model_info_with_multiple_workers() {
        let ctx = TestContext::new(vec![
            MockWorkerConfig {
                port: 18204,
                worker_type: WorkerType::Regular,
                health_status: HealthStatus::Healthy,
                response_delay_ms: 0,
                fail_rate: 0.0,
            },
            MockWorkerConfig {
                port: 18205,
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                worker_type: WorkerType::Regular,
                health_status: HealthStatus::Healthy,
                response_delay_ms: 0,
                fail_rate: 0.0,
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            },
        ])
        .await;
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        let app = ctx.create_app().await;
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        for _ in 0..5 {
            let req = Request::builder()
                .method("GET")
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                .uri("/get_model_info")
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                .body(Body::empty())
                .unwrap();
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            let resp = app.clone().oneshot(req).await.unwrap();
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            assert_eq!(resp.status(), StatusCode::OK);

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            let body = axum::body::to_bytes(resp.into_body(), usize::MAX)
                .await
                .unwrap();
            let body_json: serde_json::Value = serde_json::from_slice(&body).unwrap();
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            assert_eq!(
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                body_json.get("model_path").and_then(|v| v.as_str()),
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                Some("mock-model-path")
            );
677
        }
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        ctx.shutdown().await;
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    }

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    #[tokio::test]
    async fn test_model_info_with_unhealthy_worker() {
        let ctx = TestContext::new(vec![MockWorkerConfig {
            port: 18206,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 1.0, // Always fail
        }])
        .await;

        let app = ctx.create_app().await;

        let req = Request::builder()
            .method("GET")
            .uri("/get_model_info")
            .body(Body::empty())
            .unwrap();
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        let resp = app.oneshot(req).await.unwrap();
        // Worker with fail_rate: 1.0 should always return an error status
        assert!(
            resp.status() == StatusCode::INTERNAL_SERVER_ERROR
                || resp.status() == StatusCode::SERVICE_UNAVAILABLE,
            "Expected error status for always-failing worker, got: {:?}",
            resp.status()
        );
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        ctx.shutdown().await;
    }
}
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#[cfg(test)]
mod worker_management_tests {
    use super::*;
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    #[tokio::test]
    async fn test_add_new_worker() {
        let ctx = TestContext::new(vec![]).await;
        let app = ctx.create_app().await;

        // Start a mock worker
        let mut worker = MockWorker::new(MockWorkerConfig {
            port: 18301,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
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        });
731
        let url = worker.start().await.unwrap();
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        // Add the worker
        let req = Request::builder()
            .method("POST")
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            .uri(format!("/add_worker?url={}", url))
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            .body(Body::empty())
            .unwrap();
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        let resp = app.clone().oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::OK);
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        // List workers to verify
        let req = Request::builder()
            .method("GET")
            .uri("/list_workers")
            .body(Body::empty())
            .unwrap();
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        let resp = app.oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::OK);
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        let body = axum::body::to_bytes(resp.into_body(), usize::MAX)
            .await
            .unwrap();
        let body_json: serde_json::Value = serde_json::from_slice(&body).unwrap();
        let workers = body_json["urls"].as_array().unwrap();
        assert!(workers.iter().any(|w| w.as_str().unwrap() == url));
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        worker.stop().await;
        ctx.shutdown().await;
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    }

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    #[tokio::test]
    async fn test_remove_existing_worker() {
        let ctx = TestContext::new(vec![MockWorkerConfig {
            port: 18302,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
        }])
        .await;

        let app = ctx.create_app().await;

        // Get the worker URL
        let req = Request::builder()
            .method("GET")
            .uri("/list_workers")
            .body(Body::empty())
            .unwrap();
        let resp = app.clone().oneshot(req).await.unwrap();
        let body = axum::body::to_bytes(resp.into_body(), usize::MAX)
            .await
            .unwrap();
        let body_json: serde_json::Value = serde_json::from_slice(&body).unwrap();
        let workers = body_json["urls"].as_array().unwrap();
        let worker_url = workers[0].as_str().unwrap();

        // Remove the worker
        let req = Request::builder()
            .method("POST")
794
            .uri(format!("/remove_worker?url={}", worker_url))
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            .body(Body::empty())
            .unwrap();
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        let resp = app.clone().oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::OK);
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        let req = Request::builder()
            .method("GET")
            .uri("/list_workers")
            .body(Body::empty())
            .unwrap();
        let resp = app.oneshot(req).await.unwrap();
        let body = axum::body::to_bytes(resp.into_body(), usize::MAX)
            .await
            .unwrap();
        let body_json: serde_json::Value = serde_json::from_slice(&body).unwrap();
        let workers = body_json["urls"].as_array().unwrap();
        assert!(workers.is_empty());
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        ctx.shutdown().await;
815
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    }

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    #[tokio::test]
    async fn test_add_worker_invalid_url() {
        let ctx = TestContext::new(vec![]).await;
        let app = ctx.create_app().await;
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        // Invalid URL format
        let req = Request::builder()
            .method("POST")
            .uri("/add_worker?url=not-a-valid-url")
            .body(Body::empty())
            .unwrap();
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        let resp = app.clone().oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::BAD_REQUEST);
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        // Missing URL parameter
        let req = Request::builder()
            .method("POST")
            .uri("/add_worker")
            .body(Body::empty())
            .unwrap();
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        let resp = app.clone().oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::BAD_REQUEST);
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        // Empty URL
        let req = Request::builder()
            .method("POST")
            .uri("/add_worker?url=")
            .body(Body::empty())
            .unwrap();
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        let resp = app.oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::BAD_REQUEST);
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        ctx.shutdown().await;
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    }

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    #[tokio::test]
    async fn test_add_duplicate_worker() {
        // Start a mock worker
        let mut worker = MockWorker::new(MockWorkerConfig {
            port: 18303,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
        });
        let url = worker.start().await.unwrap();
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        let ctx = TestContext::new(vec![]).await;
        let app = ctx.create_app().await;
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        // Add worker first time
        let req = Request::builder()
            .method("POST")
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            .uri(format!("/add_worker?url={}", url))
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            .body(Body::empty())
            .unwrap();
        let resp = app.clone().oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::OK);
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        tokio::time::sleep(tokio::time::Duration::from_millis(500)).await;
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        // Try to add same worker again
        let req = Request::builder()
            .method("POST")
884
            .uri(format!("/add_worker?url={}", url))
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            .body(Body::empty())
            .unwrap();
        let resp = app.oneshot(req).await.unwrap();
        // Should return error for duplicate
        assert_eq!(resp.status(), StatusCode::BAD_REQUEST);
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        worker.stop().await;
        ctx.shutdown().await;
    }
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    #[tokio::test]
    async fn test_add_unhealthy_worker() {
        // Start unhealthy worker
        let mut worker = MockWorker::new(MockWorkerConfig {
            port: 18304,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Unhealthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
        });
        let url = worker.start().await.unwrap();
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        let ctx = TestContext::new(vec![]).await;
        let app = ctx.create_app().await;
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        // Try to add unhealthy worker
        let req = Request::builder()
            .method("POST")
913
            .uri(format!("/add_worker?url={}", url))
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            .body(Body::empty())
            .unwrap();
        let resp = app.oneshot(req).await.unwrap();
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        // Router should reject unhealthy workers
        assert!(
            resp.status() == StatusCode::BAD_REQUEST
                || resp.status() == StatusCode::SERVICE_UNAVAILABLE
        );
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        worker.stop().await;
        ctx.shutdown().await;
926
    }
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}

#[cfg(test)]
mod router_policy_tests {
    use super::*;
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    #[tokio::test]
    async fn test_random_policy() {
        let ctx = TestContext::new(vec![
            MockWorkerConfig {
                port: 18801,
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941
                worker_type: WorkerType::Regular,
                health_status: HealthStatus::Healthy,
                response_delay_ms: 0,
                fail_rate: 0.0,
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944
            },
            MockWorkerConfig {
                port: 18802,
945
                worker_type: WorkerType::Regular,
946
                health_status: HealthStatus::Healthy,
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                response_delay_ms: 0,
                fail_rate: 0.0,
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            },
        ])
        .await;

        // Send multiple requests and verify they succeed
        let app = ctx.create_app().await;

        for i in 0..10 {
            let payload = json!({
                "text": format!("Request {}", i),
                "stream": false
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            });

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            let req = Request::builder()
                .method("POST")
                .uri("/generate")
                .header(CONTENT_TYPE, "application/json")
                .body(Body::from(serde_json::to_string(&payload).unwrap()))
                .unwrap();
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            let resp = app.clone().oneshot(req).await.unwrap();
            assert_eq!(resp.status(), StatusCode::OK);
        }
972

973
974
        ctx.shutdown().await;
    }
975

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978
    #[tokio::test]
    async fn test_worker_selection() {
        let ctx = TestContext::new(vec![MockWorkerConfig {
979
            port: 18207,
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            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
        }])
        .await;

        let _payload = json!({
            "text": "Test selection",
            "stream": false
990
        });
991
992

        // Check that router has the worker
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        // TODO: Update test after worker management refactoring
        // For now, skip this check
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996

        ctx.shutdown().await;
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    }
}

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#[cfg(test)]
mod responses_endpoint_tests {
1002
    use reqwest::Client as HttpClient;
1003

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    use super::*;

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1084
    #[tokio::test]
    async fn test_v1_responses_non_streaming() {
        let ctx = TestContext::new(vec![MockWorkerConfig {
            port: 18950,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
        }])
        .await;

        let app = ctx.create_app().await;

        let payload = json!({
            "input": "Hello Responses API",
            "model": "mock-model",
            "stream": false
        });

        let req = Request::builder()
            .method("POST")
            .uri("/v1/responses")
            .header(CONTENT_TYPE, "application/json")
            .body(Body::from(serde_json::to_string(&payload).unwrap()))
            .unwrap();

        let resp = app.clone().oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::OK);

        let body = axum::body::to_bytes(resp.into_body(), usize::MAX)
            .await
            .unwrap();
        let body_json: serde_json::Value = serde_json::from_slice(&body).unwrap();
        assert_eq!(body_json["object"], "response");
        assert_eq!(body_json["status"], "completed");

        ctx.shutdown().await;
    }

    #[tokio::test]
    async fn test_v1_responses_streaming() {
        let ctx = TestContext::new(vec![MockWorkerConfig {
            port: 18951,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
        }])
        .await;

        let app = ctx.create_app().await;

        let payload = json!({
            "input": "Hello Responses API",
            "model": "mock-model",
            "stream": true
        });

        let req = Request::builder()
            .method("POST")
            .uri("/v1/responses")
            .header(CONTENT_TYPE, "application/json")
            .body(Body::from(serde_json::to_string(&payload).unwrap()))
            .unwrap();

        let resp = app.clone().oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::OK);

        // Check that content-type indicates SSE
        let headers = resp.headers().clone();
        let ct = headers
            .get("content-type")
            .and_then(|v| v.to_str().ok())
            .unwrap_or("");
        assert!(ct.contains("text/event-stream"));

        // We don't fully consume the stream in this test harness.
        ctx.shutdown().await;
    }
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1098
1099

    #[tokio::test]
    async fn test_v1_responses_get() {
        let ctx = TestContext::new(vec![MockWorkerConfig {
            port: 18952,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
        }])
        .await;

        let app = ctx.create_app().await;

        // First create a response to obtain an id
1100
        let resp_id = "test-get-resp-id-123";
1101
1102
1103
        let payload = json!({
            "input": "Hello Responses API",
            "model": "mock-model",
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1107
            "stream": false,
            "store": true,
            "background": true,
            "request_id": resp_id
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1147
1148
        });
        let req = Request::builder()
            .method("POST")
            .uri("/v1/responses")
            .header(CONTENT_TYPE, "application/json")
            .body(Body::from(serde_json::to_string(&payload).unwrap()))
            .unwrap();
        let resp = app.clone().oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::OK);

        // Retrieve the response
        let req = Request::builder()
            .method("GET")
            .uri(format!("/v1/responses/{}", resp_id))
            .body(Body::empty())
            .unwrap();
        let resp = app.clone().oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::OK);
        let body = axum::body::to_bytes(resp.into_body(), usize::MAX)
            .await
            .unwrap();
        let get_json: serde_json::Value = serde_json::from_slice(&body).unwrap();
        assert_eq!(get_json["object"], "response");

        ctx.shutdown().await;
    }

    #[tokio::test]
    async fn test_v1_responses_cancel() {
        let ctx = TestContext::new(vec![MockWorkerConfig {
            port: 18953,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
        }])
        .await;

        let app = ctx.create_app().await;

        // First create a response to obtain an id
1149
        let resp_id = "test-cancel-resp-id-456";
1150
1151
1152
        let payload = json!({
            "input": "Hello Responses API",
            "model": "mock-model",
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1155
1156
            "stream": false,
            "store": true,
            "background": true,
            "request_id": resp_id
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        });
        let req = Request::builder()
            .method("POST")
            .uri("/v1/responses")
            .header(CONTENT_TYPE, "application/json")
            .body(Body::from(serde_json::to_string(&payload).unwrap()))
            .unwrap();
        let resp = app.clone().oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::OK);

        // Cancel the response
        let req = Request::builder()
            .method("POST")
            .uri(format!("/v1/responses/{}/cancel", resp_id))
            .body(Body::empty())
            .unwrap();
        let resp = app.clone().oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::OK);
        let body = axum::body::to_bytes(resp.into_body(), usize::MAX)
            .await
            .unwrap();
        let cancel_json: serde_json::Value = serde_json::from_slice(&body).unwrap();
        assert_eq!(cancel_json["status"], "cancelled");

        ctx.shutdown().await;
    }

    #[tokio::test]
    async fn test_v1_responses_delete_and_list_not_implemented() {
        let ctx = TestContext::new(vec![MockWorkerConfig {
            port: 18954,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
        }])
        .await;

        let app = ctx.create_app().await;

        // Use an arbitrary id for delete/list
        let resp_id = "resp-test-123";

        let req = Request::builder()
            .method("DELETE")
            .uri(format!("/v1/responses/{}", resp_id))
            .body(Body::empty())
            .unwrap();
        let resp = app.clone().oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::NOT_IMPLEMENTED);

        let req = Request::builder()
            .method("GET")
            .uri(format!("/v1/responses/{}/input", resp_id))
            .body(Body::empty())
            .unwrap();
        let resp = app.clone().oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::NOT_IMPLEMENTED);

        ctx.shutdown().await;
    }

    #[tokio::test]
    async fn test_v1_responses_get_multi_worker_fanout() {
        // Start two mock workers
        let ctx = TestContext::new(vec![
            MockWorkerConfig {
                port: 18960,
                worker_type: WorkerType::Regular,
                health_status: HealthStatus::Healthy,
                response_delay_ms: 0,
                fail_rate: 0.0,
            },
            MockWorkerConfig {
                port: 18961,
                worker_type: WorkerType::Regular,
                health_status: HealthStatus::Healthy,
                response_delay_ms: 0,
                fail_rate: 0.0,
            },
        ])
        .await;

        let app = ctx.create_app().await;

        // Create a background response with a known id
        let rid = format!("resp_{}", 18960); // arbitrary unique id
        let payload = json!({
            "input": "Hello Responses API",
            "model": "mock-model",
            "background": true,
            "store": true,
            "request_id": rid,
        });

        let req = Request::builder()
            .method("POST")
            .uri("/v1/responses")
            .header(CONTENT_TYPE, "application/json")
            .body(Body::from(serde_json::to_string(&payload).unwrap()))
            .unwrap();
        let resp = app.clone().oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::OK);

        // Using the router, GET should succeed by fanning out across workers
        let req = Request::builder()
            .method("GET")
            .uri(format!("/v1/responses/{}", rid))
            .body(Body::empty())
            .unwrap();
        let resp = app.clone().oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::OK);

        // Validate only one worker holds the metadata: direct calls
        let client = HttpClient::new();
        let mut ok_count = 0usize;
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        // Get the actual worker URLs from the context
        let worker_urls: Vec<String> = vec![
            "http://127.0.0.1:18960".to_string(),
            "http://127.0.0.1:18961".to_string(),
        ];
        for url in worker_urls {
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            let get_url = format!("{}/v1/responses/{}", url, rid);
            let res = client.get(get_url).send().await.unwrap();
            if res.status() == StatusCode::OK {
                ok_count += 1;
            }
        }
        assert_eq!(ok_count, 1, "exactly one worker should store the response");

        ctx.shutdown().await;
    }
1289
1290
}

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1294
#[cfg(test)]
mod error_tests {
    use super::*;

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1312
    #[tokio::test]
    async fn test_404_not_found() {
        let ctx = TestContext::new(vec![MockWorkerConfig {
            port: 18401,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
        }])
        .await;

        let app = ctx.create_app().await;

        let req = Request::builder()
            .method("GET")
            .uri("/unknown_endpoint")
            .body(Body::empty())
            .unwrap();
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        let resp = app.clone().oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::NOT_FOUND);

        let req = Request::builder()
            .method("POST")
            .uri("/api/v2/generate")
            .header(CONTENT_TYPE, "application/json")
            .body(Body::from(
                serde_json::to_string(&json!({"text": "test"})).unwrap(),
            ))
            .unwrap();
1325

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        let resp = app.oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::NOT_FOUND);
1328

1329
1330
        ctx.shutdown().await;
    }
1331

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1347
1348
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1350
    #[tokio::test]
    async fn test_method_not_allowed() {
        let ctx = TestContext::new(vec![MockWorkerConfig {
            port: 18402,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
        }])
        .await;

        let app = ctx.create_app().await;

        // GET request to POST-only endpoint
        let req = Request::builder()
            .method("GET")
            .uri("/generate")
            .body(Body::empty())
            .unwrap();
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        let resp = app.clone().oneshot(req).await.unwrap();
        // Note: Axum returns 405 for wrong methods on matched routes
        assert_eq!(resp.status(), StatusCode::METHOD_NOT_ALLOWED);
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        // POST request to GET-only endpoint
        let req = Request::builder()
            .method("POST")
            .uri("/health")
            .header(CONTENT_TYPE, "application/json")
            .body(Body::from("{}"))
            .unwrap();

        let resp = app.oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::METHOD_NOT_ALLOWED);

        ctx.shutdown().await;
1368
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    }

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    #[tokio::test]
    async fn test_payload_too_large() {
        // Create context with small payload limit
        let config = RouterConfig {
1374
            chat_template: None,
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            mode: RoutingMode::Regular {
                worker_urls: vec![],
            },
            policy: PolicyConfig::Random,
            host: "127.0.0.1".to_string(),
            port: 3010,
            max_payload_size: 1024, // 1KB limit
            request_timeout_secs: 600,
            worker_startup_timeout_secs: 1,
            worker_startup_check_interval_secs: 1,
            dp_aware: false,
            api_key: None,
            discovery: None,
            metrics: None,
            log_dir: None,
            log_level: None,
            request_id_headers: None,
            max_concurrent_requests: 64,
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1395
            queue_size: 0,
            queue_timeout_secs: 60,
            rate_limit_tokens_per_second: None,
1396
            cors_allowed_origins: vec![],
1397
            retry: RetryConfig::default(),
1398
            circuit_breaker: CircuitBreakerConfig::default(),
1399
1400
            disable_retries: false,
            disable_circuit_breaker: false,
1401
            health_check: sglang_router_rs::config::HealthCheckConfig::default(),
1402
            enable_igw: false,
1403
1404
1405
            connection_mode: ConnectionMode::Http,
            model_path: None,
            tokenizer_path: None,
1406
            history_backend: sglang_router_rs::config::HistoryBackend::Memory,
1407
            oracle: None,
1408
1409
            reasoning_parser: None,
            tool_call_parser: None,
1410
            tokenizer_cache: sglang_router_rs::config::TokenizerCacheConfig::default(),
1411
1412
1413
1414
1415
1416
        };

        let ctx = TestContext::new_with_config(
            config,
            vec![MockWorkerConfig {
                port: 18403,
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1419
1420
                worker_type: WorkerType::Regular,
                health_status: HealthStatus::Healthy,
                response_delay_ms: 0,
                fail_rate: 0.0,
1421
1422
1423
            }],
        )
        .await;
1424

1425
1426
1427
        // Note: The server would have payload size middleware configured
        // but we cannot test it directly through the test app
        // This test is kept for documentation purposes
1428

1429
1430
        ctx.shutdown().await;
    }
1431

1432
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1451
    #[tokio::test]
    async fn test_invalid_json_payload() {
        let ctx = TestContext::new(vec![MockWorkerConfig {
            port: 18404,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
        }])
        .await;

        let app = ctx.create_app().await;

        // Send invalid JSON
        let req = Request::builder()
            .method("POST")
            .uri("/generate")
            .header(CONTENT_TYPE, "application/json")
            .body(Body::from("{invalid json}"))
            .unwrap();
1452

1453
1454
        let resp = app.clone().oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::BAD_REQUEST);
1455

1456
1457
1458
1459
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1461
1462
        // Send empty body
        let req = Request::builder()
            .method("POST")
            .uri("/generate")
            .header(CONTENT_TYPE, "application/json")
            .body(Body::empty())
            .unwrap();
1463

1464
1465
        let resp = app.oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::BAD_REQUEST);
1466

1467
1468
        ctx.shutdown().await;
    }
1469

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1486
1487
    #[tokio::test]
    async fn test_invalid_model() {
        let ctx = TestContext::new(vec![MockWorkerConfig {
            port: 18406,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
        }])
        .await;

        let app = ctx.create_app().await;

        let payload = json!({
            "model": "invalid-model-name-that-does-not-exist",
            "messages": [{"role": "user", "content": "Hello"}],
            "stream": false
        });
1488

1489
1490
1491
1492
1493
1494
        let req = Request::builder()
            .method("POST")
            .uri("/v1/chat/completions")
            .header(CONTENT_TYPE, "application/json")
            .body(Body::from(serde_json::to_string(&payload).unwrap()))
            .unwrap();
1495

1496
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1498
        let resp = app.oneshot(req).await.unwrap();
        // Mock worker accepts any model, but real implementation might return 400
        assert!(resp.status().is_success() || resp.status() == StatusCode::BAD_REQUEST);
1499

1500
1501
1502
        ctx.shutdown().await;
    }
}
1503

1504
1505
1506
#[cfg(test)]
mod cache_tests {
    use super::*;
1507

1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
    #[tokio::test]
    async fn test_flush_cache() {
        let ctx = TestContext::new(vec![MockWorkerConfig {
            port: 18501,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
        }])
        .await;

        let app = ctx.create_app().await;

        let req = Request::builder()
            .method("POST")
            .uri("/flush_cache")
            .body(Body::empty())
            .unwrap();
1526

1527
1528
1529
1530
1531
1532
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1534
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1536
1537
1538
1539
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1541
1542
        let resp = app.oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::OK);

        // The response might be empty or contain a message
        let body_bytes = axum::body::to_bytes(resp.into_body(), usize::MAX)
            .await
            .unwrap();
        if !body_bytes.is_empty() {
            if let Ok(body) = serde_json::from_slice::<serde_json::Value>(&body_bytes) {
                // Check that we got a successful response with expected fields
                assert!(body.is_object());
                assert!(body.get("message").is_some() || body.get("status").is_some());
            }
        }

        ctx.shutdown().await;
1543
1544
    }

1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
    #[tokio::test]
    async fn test_get_loads() {
        let ctx = TestContext::new(vec![
            MockWorkerConfig {
                port: 18502,
                worker_type: WorkerType::Regular,
                health_status: HealthStatus::Healthy,
                response_delay_ms: 0,
                fail_rate: 0.0,
            },
            MockWorkerConfig {
                port: 18503,
1557
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1559
1560
                worker_type: WorkerType::Regular,
                health_status: HealthStatus::Healthy,
                response_delay_ms: 0,
                fail_rate: 0.0,
1561
1562
1563
            },
        ])
        .await;
1564

1565
        let app = ctx.create_app().await;
1566

1567
1568
1569
1570
1571
        let req = Request::builder()
            .method("GET")
            .uri("/get_loads")
            .body(Body::empty())
            .unwrap();
1572

1573
1574
        let resp = app.oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::OK);
1575

1576
1577
1578
1579
        let body = axum::body::to_bytes(resp.into_body(), usize::MAX)
            .await
            .unwrap();
        let body_json: serde_json::Value = serde_json::from_slice(&body).unwrap();
1580

1581
1582
1583
        assert!(body_json.is_object());
        // The exact structure depends on the implementation
        // but should contain worker load information
1584

1585
1586
        ctx.shutdown().await;
    }
1587

1588
1589
1590
    #[tokio::test]
    async fn test_flush_cache_no_workers() {
        let ctx = TestContext::new(vec![]).await;
1591

1592
        let app = ctx.create_app().await;
1593

1594
1595
1596
1597
1598
        let req = Request::builder()
            .method("POST")
            .uri("/flush_cache")
            .body(Body::empty())
            .unwrap();
1599

1600
1601
1602
1603
1604
        let resp = app.oneshot(req).await.unwrap();
        // Should either succeed (no-op) or return service unavailable
        assert!(
            resp.status() == StatusCode::OK || resp.status() == StatusCode::SERVICE_UNAVAILABLE
        );
1605

1606
        ctx.shutdown().await;
1607
1608
1609
1610
    }
}

#[cfg(test)]
1611
mod load_balancing_tests {
1612
1613
    use super::*;

1614
1615
1616
1617
1618
1619
    #[tokio::test]
    async fn test_request_distribution() {
        // Create multiple workers
        let ctx = TestContext::new(vec![
            MockWorkerConfig {
                port: 18601,
1620
1621
1622
1623
                worker_type: WorkerType::Regular,
                health_status: HealthStatus::Healthy,
                response_delay_ms: 0,
                fail_rate: 0.0,
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
            },
            MockWorkerConfig {
                port: 18602,
                worker_type: WorkerType::Regular,
                health_status: HealthStatus::Healthy,
                response_delay_ms: 0,
                fail_rate: 0.0,
            },
        ])
        .await;
1634

1635
        let app = ctx.create_app().await;
1636

1637
1638
1639
1640
1641
1642
1643
        // Send multiple requests and track distribution
        let mut request_count = 0;
        for i in 0..10 {
            let payload = json!({
                "text": format!("Request {}", i),
                "stream": false
            });
1644

1645
1646
1647
1648
1649
1650
            let req = Request::builder()
                .method("POST")
                .uri("/generate")
                .header(CONTENT_TYPE, "application/json")
                .body(Body::from(serde_json::to_string(&payload).unwrap()))
                .unwrap();
1651

1652
1653
1654
            let resp = app.clone().oneshot(req).await.unwrap();
            if resp.status() == StatusCode::OK {
                request_count += 1;
1655
            }
1656
        }
1657

1658
1659
        // With random policy, all requests should succeed
        assert_eq!(request_count, 10);
1660

1661
1662
1663
        ctx.shutdown().await;
    }
}
1664

1665
1666
1667
#[cfg(test)]
mod pd_mode_tests {
    use super::*;
1668

1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
    #[tokio::test]
    async fn test_pd_mode_routing() {
        // Create PD mode configuration with prefill and decode workers
        let mut prefill_worker = MockWorker::new(MockWorkerConfig {
            port: 18701,
            worker_type: WorkerType::Prefill,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
        });
1679

1680
1681
1682
1683
1684
1685
        let mut decode_worker = MockWorker::new(MockWorkerConfig {
            port: 18702,
            worker_type: WorkerType::Decode,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
1686
1687
        });

1688
1689
        let prefill_url = prefill_worker.start().await.unwrap();
        let decode_url = decode_worker.start().await.unwrap();
1690

1691
1692
1693
1694
1695
        tokio::time::sleep(tokio::time::Duration::from_millis(200)).await;

        // Extract port from prefill URL
        let prefill_port = prefill_url
            .split(':')
1696
            .next_back()
1697
1698
1699
1700
            .and_then(|p| p.trim_end_matches('/').parse::<u16>().ok())
            .unwrap_or(9000);

        let config = RouterConfig {
1701
            chat_template: None,
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
            mode: RoutingMode::PrefillDecode {
                prefill_urls: vec![(prefill_url, Some(prefill_port))],
                decode_urls: vec![decode_url],
                prefill_policy: None,
                decode_policy: None,
            },
            policy: PolicyConfig::Random,
            host: "127.0.0.1".to_string(),
            port: 3011,
            max_payload_size: 256 * 1024 * 1024,
            request_timeout_secs: 600,
            worker_startup_timeout_secs: 1,
            worker_startup_check_interval_secs: 1,
            discovery: None,
            metrics: None,
            log_dir: None,
            dp_aware: false,
            api_key: None,
            log_level: None,
            request_id_headers: None,
            max_concurrent_requests: 64,
1723
1724
1725
            queue_size: 0,
            queue_timeout_secs: 60,
            rate_limit_tokens_per_second: None,
1726
            cors_allowed_origins: vec![],
1727
            retry: RetryConfig::default(),
1728
            circuit_breaker: CircuitBreakerConfig::default(),
1729
1730
            disable_retries: false,
            disable_circuit_breaker: false,
1731
            health_check: sglang_router_rs::config::HealthCheckConfig::default(),
1732
            enable_igw: false,
1733
1734
1735
            connection_mode: ConnectionMode::Http,
            model_path: None,
            tokenizer_path: None,
1736
            history_backend: sglang_router_rs::config::HistoryBackend::Memory,
1737
            oracle: None,
1738
1739
            reasoning_parser: None,
            tool_call_parser: None,
1740
            tokenizer_cache: sglang_router_rs::config::TokenizerCacheConfig::default(),
1741
1742
        };

1743
1744
1745
        // Create app context
        let app_context = common::create_test_context(config);

1746
        // Create router - this might fail due to health check issues
1747
        let router_result = RouterFactory::create_router(&app_context).await;
1748
1749
1750
1751
1752
1753
1754

        // Clean up workers
        prefill_worker.stop().await;
        decode_worker.stop().await;

        // For now, just verify the configuration was attempted
        assert!(router_result.is_err() || router_result.is_ok());
1755
1756
1757
1758
    }
}

#[cfg(test)]
1759
mod request_id_tests {
1760
1761
    use super::*;

1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
    #[tokio::test]
    async fn test_request_id_generation() {
        let ctx = TestContext::new(vec![MockWorkerConfig {
            port: 18901,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
        }])
        .await;

        let app = ctx.create_app().await;

        let payload = json!({
            "text": "Test request",
            "stream": false
        });
1779

1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
        let req = Request::builder()
            .method("POST")
            .uri("/generate")
            .header(CONTENT_TYPE, "application/json")
            .body(Body::from(serde_json::to_string(&payload).unwrap()))
            .unwrap();

        let resp = app.clone().oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::OK);

        // Check that response has x-request-id header
        let request_id = resp.headers().get("x-request-id");
        assert!(
            request_id.is_some(),
            "Response should have x-request-id header"
        );

        let id_value = request_id.unwrap().to_str().unwrap();
        assert!(
            id_value.starts_with("gnt-"),
            "Generate endpoint should have gnt- prefix"
        );
        assert!(
            id_value.len() > 4,
            "Request ID should have content after prefix"
        );

        let custom_id = "custom-request-id-123";
        let req = Request::builder()
            .method("POST")
            .uri("/generate")
            .header(CONTENT_TYPE, "application/json")
            .header("x-request-id", custom_id)
            .body(Body::from(serde_json::to_string(&payload).unwrap()))
            .unwrap();

        let resp = app.clone().oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::OK);
1818

1819
1820
1821
1822
1823
1824
1825
        let response_id = resp.headers().get("x-request-id");
        assert!(response_id.is_some());
        assert_eq!(response_id.unwrap(), custom_id);

        let chat_payload = json!({
            "messages": [{"role": "user", "content": "Hello"}],
            "model": "test-model"
1826
        });
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
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        let req = Request::builder()
            .method("POST")
            .uri("/v1/chat/completions")
            .header(CONTENT_TYPE, "application/json")
            .body(Body::from(serde_json::to_string(&chat_payload).unwrap()))
            .unwrap();

        let resp = app.clone().oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::OK);

        let request_id = resp.headers().get("x-request-id");
        assert!(request_id.is_some());
        assert!(request_id
            .unwrap()
            .to_str()
            .unwrap()
            .starts_with("chatcmpl-"));

        let req = Request::builder()
            .method("POST")
            .uri("/generate")
            .header(CONTENT_TYPE, "application/json")
            .header("x-correlation-id", "correlation-123")
            .body(Body::from(serde_json::to_string(&payload).unwrap()))
            .unwrap();

        let resp = app.clone().oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::OK);

        let response_id = resp.headers().get("x-request-id");
        assert!(response_id.is_some());
        assert_eq!(response_id.unwrap(), "correlation-123");

        ctx.shutdown().await;
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    }

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    #[tokio::test]
    async fn test_request_id_with_custom_headers() {
        // Create config with custom request ID headers
        let config = RouterConfig {
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            chat_template: None,
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            mode: RoutingMode::Regular {
                worker_urls: vec![],
            },
            policy: PolicyConfig::Random,
            host: "127.0.0.1".to_string(),
            port: 3002,
            max_payload_size: 256 * 1024 * 1024,
            request_timeout_secs: 600,
            worker_startup_timeout_secs: 1,
            worker_startup_check_interval_secs: 1,
            discovery: None,
            metrics: None,
            dp_aware: false,
            api_key: None,
            log_dir: None,
            log_level: None,
            request_id_headers: Some(vec!["custom-id".to_string(), "trace-id".to_string()]),
            max_concurrent_requests: 64,
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            queue_size: 0,
            queue_timeout_secs: 60,
            rate_limit_tokens_per_second: None,
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            cors_allowed_origins: vec![],
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            retry: RetryConfig::default(),
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            circuit_breaker: CircuitBreakerConfig::default(),
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            disable_retries: false,
            disable_circuit_breaker: false,
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            health_check: sglang_router_rs::config::HealthCheckConfig::default(),
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            enable_igw: false,
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            connection_mode: ConnectionMode::Http,
            model_path: None,
            tokenizer_path: None,
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            history_backend: sglang_router_rs::config::HistoryBackend::Memory,
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            oracle: None,
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            reasoning_parser: None,
            tool_call_parser: None,
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            tokenizer_cache: sglang_router_rs::config::TokenizerCacheConfig::default(),
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        };
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        let ctx = TestContext::new_with_config(
            config,
            vec![MockWorkerConfig {
                port: 18902,
                worker_type: WorkerType::Regular,
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                health_status: HealthStatus::Healthy,
                response_delay_ms: 0,
                fail_rate: 0.0,
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            }],
        )
        .await;
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        let app = ctx.create_app().await;
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        let payload = json!({
            "text": "Test request",
            "stream": false
        });
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        let req = Request::builder()
            .method("POST")
            .uri("/generate")
            .header(CONTENT_TYPE, "application/json")
            .header("custom-id", "my-custom-id")
            .body(Body::from(serde_json::to_string(&payload).unwrap()))
            .unwrap();
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        let resp = app.clone().oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::OK);

        let response_id = resp.headers().get("x-request-id");
        assert!(response_id.is_some());
        assert_eq!(response_id.unwrap(), "my-custom-id");

        ctx.shutdown().await;
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    }
}
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#[cfg(test)]
mod rerank_tests {
    use super::*;
    // Note: RerankRequest and RerankResult are available for future use

    #[tokio::test]
    async fn test_rerank_success() {
        let ctx = TestContext::new(vec![MockWorkerConfig {
            port: 18105,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
        }])
        .await;

        let app = ctx.create_app().await;

        let payload = json!({
            "query": "machine learning algorithms",
            "documents": [
                "Introduction to machine learning concepts",
                "Deep learning neural networks tutorial"
            ],
            "model": "test-rerank-model",
            "top_k": 2,
            "return_documents": true,
            "rid": "test-request-123"
        });

        let req = Request::builder()
            .method("POST")
            .uri("/rerank")
            .header(CONTENT_TYPE, "application/json")
            .body(Body::from(serde_json::to_string(&payload).unwrap()))
            .unwrap();

        let resp = app.oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::OK);

        let body = axum::body::to_bytes(resp.into_body(), usize::MAX)
            .await
            .unwrap();
        let body_json: serde_json::Value = serde_json::from_slice(&body).unwrap();

        assert!(body_json.get("results").is_some());
        assert!(body_json.get("model").is_some());
        assert_eq!(body_json["model"], "test-rerank-model");

        let results = body_json["results"].as_array().unwrap();
        assert_eq!(results.len(), 2);

        assert!(results[0]["score"].as_f64().unwrap() >= results[1]["score"].as_f64().unwrap());

        ctx.shutdown().await;
    }

    #[tokio::test]
    async fn test_rerank_with_top_k() {
        let ctx = TestContext::new(vec![MockWorkerConfig {
            port: 18106,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
        }])
        .await;

        let app = ctx.create_app().await;

        let payload = json!({
            "query": "test query",
            "documents": [
                "Document 1",
                "Document 2",
                "Document 3"
            ],
            "model": "test-model",
            "top_k": 1,
            "return_documents": true
        });

        let req = Request::builder()
            .method("POST")
            .uri("/rerank")
            .header(CONTENT_TYPE, "application/json")
            .body(Body::from(serde_json::to_string(&payload).unwrap()))
            .unwrap();

        let resp = app.oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::OK);

        let body = axum::body::to_bytes(resp.into_body(), usize::MAX)
            .await
            .unwrap();
        let body_json: serde_json::Value = serde_json::from_slice(&body).unwrap();

        // Should only return top_k results
        let results = body_json["results"].as_array().unwrap();
        assert_eq!(results.len(), 1);

        ctx.shutdown().await;
    }

    #[tokio::test]
    async fn test_rerank_without_documents() {
        let ctx = TestContext::new(vec![MockWorkerConfig {
            port: 18107,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
        }])
        .await;

        let app = ctx.create_app().await;

        let payload = json!({
            "query": "test query",
            "documents": ["Document 1", "Document 2"],
            "model": "test-model",
            "return_documents": false
        });

        let req = Request::builder()
            .method("POST")
            .uri("/rerank")
            .header(CONTENT_TYPE, "application/json")
            .body(Body::from(serde_json::to_string(&payload).unwrap()))
            .unwrap();

        let resp = app.oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::OK);

        let body = axum::body::to_bytes(resp.into_body(), usize::MAX)
            .await
            .unwrap();
        let body_json: serde_json::Value = serde_json::from_slice(&body).unwrap();

        // Documents should be null when return_documents is false
        let results = body_json["results"].as_array().unwrap();
        for result in results {
            assert!(result.get("document").is_none());
        }

        ctx.shutdown().await;
    }

    #[tokio::test]
    async fn test_rerank_worker_failure() {
        let ctx = TestContext::new(vec![MockWorkerConfig {
            port: 18108,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 1.0, // Always fail
        }])
        .await;

        let app = ctx.create_app().await;

        let payload = json!({
            "query": "test query",
            "documents": ["Document 1"],
            "model": "test-model"
        });

        let req = Request::builder()
            .method("POST")
            .uri("/rerank")
            .header(CONTENT_TYPE, "application/json")
            .body(Body::from(serde_json::to_string(&payload).unwrap()))
            .unwrap();

        let resp = app.oneshot(req).await.unwrap();
        // Should return the worker's error response
        assert_eq!(resp.status(), StatusCode::INTERNAL_SERVER_ERROR);

        ctx.shutdown().await;
    }

    #[tokio::test]
    async fn test_v1_rerank_compatibility() {
        let ctx = TestContext::new(vec![MockWorkerConfig {
            port: 18110,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
        }])
        .await;

        let app = ctx.create_app().await;

        let payload = json!({
            "query": "machine learning algorithms",
            "documents": [
                "Introduction to machine learning concepts",
                "Deep learning neural networks tutorial",
                "Statistical learning theory basics"
            ]
        });

        let req = Request::builder()
            .method("POST")
            .uri("/v1/rerank")
            .header(CONTENT_TYPE, "application/json")
            .body(Body::from(serde_json::to_string(&payload).unwrap()))
            .unwrap();

        let resp = app.oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::OK);

        let body = axum::body::to_bytes(resp.into_body(), usize::MAX)
            .await
            .unwrap();
        let body_json: serde_json::Value = serde_json::from_slice(&body).unwrap();

        assert!(body_json.get("results").is_some());
        assert!(body_json.get("model").is_some());

        // V1 API should use default model name
2167
        assert_eq!(body_json["model"], "unknown");
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        let results = body_json["results"].as_array().unwrap();
        assert_eq!(results.len(), 3); // All documents should be returned

        assert!(results[0]["score"].as_f64().unwrap() >= results[1]["score"].as_f64().unwrap());
        assert!(results[1]["score"].as_f64().unwrap() >= results[2]["score"].as_f64().unwrap());

        // V1 API should return documents by default
        for result in results {
            assert!(result.get("document").is_some());
        }

        ctx.shutdown().await;
    }

    #[tokio::test]
    async fn test_rerank_invalid_request() {
        let ctx = TestContext::new(vec![MockWorkerConfig {
            port: 18111,
            worker_type: WorkerType::Regular,
            health_status: HealthStatus::Healthy,
            response_delay_ms: 0,
            fail_rate: 0.0,
        }])
        .await;

        let app = ctx.create_app().await;

        let payload = json!({
            "query": "",
            "documents": ["Document 1", "Document 2"],
            "model": "test-model"
        });

        let req = Request::builder()
            .method("POST")
            .uri("/rerank")
            .header(CONTENT_TYPE, "application/json")
            .body(Body::from(serde_json::to_string(&payload).unwrap()))
            .unwrap();

        let resp = app.clone().oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::BAD_REQUEST);

        let payload = json!({
            "query": "   ",
            "documents": ["Document 1", "Document 2"],
            "model": "test-model"
        });

        let req = Request::builder()
            .method("POST")
            .uri("/rerank")
            .header(CONTENT_TYPE, "application/json")
            .body(Body::from(serde_json::to_string(&payload).unwrap()))
            .unwrap();

        let resp = app.clone().oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::BAD_REQUEST);

        let payload = json!({
            "query": "test query",
            "documents": [],
            "model": "test-model"
        });

        let req = Request::builder()
            .method("POST")
            .uri("/rerank")
            .header(CONTENT_TYPE, "application/json")
            .body(Body::from(serde_json::to_string(&payload).unwrap()))
            .unwrap();

        let resp = app.clone().oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::BAD_REQUEST);

        let payload = json!({
            "query": "test query",
            "documents": ["Document 1", "Document 2"],
            "model": "test-model",
            "top_k": 0
        });

        let req = Request::builder()
            .method("POST")
            .uri("/rerank")
            .header(CONTENT_TYPE, "application/json")
            .body(Body::from(serde_json::to_string(&payload).unwrap()))
            .unwrap();

        let resp = app.oneshot(req).await.unwrap();
        assert_eq!(resp.status(), StatusCode::BAD_REQUEST);

        ctx.shutdown().await;
    }
}