Aether/apps/aether-gateway/src/tests/ai_execute/stream/image.rs

use super::{
    any, build_router_with_state, build_state_with_execution_runtime_override, json, start_server,
    to_bytes, Arc, Body, Json, Mutex, Request, Router, StatusCode, TRACE_ID_HEADER,
};
use crate::ai_serving::CODEX_OPENAI_IMAGE_INTERNAL_MODEL;
use aether_crypto::{encrypt_python_fernet_plaintext, DEVELOPMENT_ENCRYPTION_KEY};
use aether_data::repository::auth::{
    InMemoryAuthApiKeySnapshotRepository, StoredAuthApiKeySnapshot,
};
use aether_data::repository::candidate_selection::InMemoryMinimalCandidateSelectionReadRepository;
use aether_data::repository::candidates::InMemoryRequestCandidateRepository;
use aether_data::repository::provider_catalog::InMemoryProviderCatalogReadRepository;
use aether_data_contracts::repository::candidate_selection::{
    StoredMinimalCandidateSelectionRow, StoredProviderModelMapping,
};
use aether_data_contracts::repository::provider_catalog::{
    StoredProviderCatalogEndpoint, StoredProviderCatalogKey, StoredProviderCatalogProvider,
};
use sha2::{Digest, Sha256};

#[tokio::test]
async fn gateway_executes_codex_image_stream_via_local_decision_gate_after_oauth_refresh() {
    #[derive(Debug, Clone)]
    struct SeenExecutionRuntimeStreamRequest {
        trace_id: String,
        url: String,
        model: String,
        authorization: String,
        x_client_request_id: String,
        tool_type: String,
        tool_action: String,
        tool_partial_images: Option<u64>,
        request_stream: bool,
        plan_stream: bool,
    }

    #[derive(Debug, Clone)]
    struct SeenRefreshRequest {
        content_type: String,
        body: String,
    }

    fn hash_api_key(value: &str) -> String {
        let mut hasher = Sha256::new();
        hasher.update(value.as_bytes());
        format!("{:x}", hasher.finalize())
    }

    fn sample_auth_snapshot(api_key_id: &str, user_id: &str) -> StoredAuthApiKeySnapshot {
        StoredAuthApiKeySnapshot::new(
            user_id.to_string(),
            "alice".to_string(),
            Some("[email protected]".to_string()),
            "user".to_string(),
            "local".to_string(),
            true,
            false,
            Some(serde_json::json!(["openai", "codex"])),
            Some(serde_json::json!(["openai:image"])),
            Some(serde_json::json!(["gpt-image-2"])),
            api_key_id.to_string(),
            Some("default".to_string()),
            true,
            false,
            false,
            Some(60),
            Some(5),
            Some(4_102_444_800_i64),
            Some(serde_json::json!(["openai", "codex"])),
            Some(serde_json::json!(["openai:image"])),
            Some(serde_json::json!(["gpt-image-2"])),
        )
        .expect("auth snapshot should build")
    }

    fn sample_candidate_row() -> StoredMinimalCandidateSelectionRow {
        StoredMinimalCandidateSelectionRow {
            provider_id: "provider-codex-image-stream-local-1".to_string(),
            provider_name: "codex".to_string(),
            provider_type: "codex".to_string(),
            provider_priority: 10,
            provider_is_active: true,
            endpoint_id: "endpoint-codex-image-stream-local-1".to_string(),
            endpoint_api_format: "openai:image".to_string(),
            endpoint_api_family: Some("openai".to_string()),
            endpoint_kind: Some("image".to_string()),
            endpoint_is_active: true,
            key_id: "key-codex-image-stream-local-1".to_string(),
            key_name: "oauth".to_string(),
            key_auth_type: "oauth".to_string(),
            key_is_active: true,
            key_api_formats: Some(vec!["openai:image".to_string()]),
            key_allowed_models: None,
            key_capabilities: None,
            key_internal_priority: 5,
            key_global_priority_by_format: Some(serde_json::json!({"openai:image": 1})),
            model_id: "model-codex-image-stream-local-1".to_string(),
            global_model_id: "global-model-codex-image-stream-local-1".to_string(),
            global_model_name: "gpt-image-2".to_string(),
            global_model_mappings: None,
            global_model_supports_streaming: Some(true),
            model_provider_model_name: "gpt-image-2".to_string(),
            model_provider_model_mappings: Some(vec![StoredProviderModelMapping {
                name: "gpt-image-2".to_string(),
                priority: 1,
                api_formats: Some(vec!["openai:image".to_string()]),
                endpoint_ids: None,
            }]),
            model_supports_streaming: Some(true),
            model_is_active: true,
            model_is_available: true,
        }
    }

    fn sample_provider_catalog_provider() -> StoredProviderCatalogProvider {
        StoredProviderCatalogProvider::new(
            "provider-codex-image-stream-local-1".to_string(),
            "codex".to_string(),
            Some("https://chatgpt.com".to_string()),
            "codex".to_string(),
        )
        .expect("provider should build")
        .with_transport_fields(
            true,
            false,
            false,
            None,
            Some(2),
            None,
            Some(20.0),
            None,
            None,
        )
    }

    fn sample_provider_catalog_endpoint() -> StoredProviderCatalogEndpoint {
        StoredProviderCatalogEndpoint::new(
            "endpoint-codex-image-stream-local-1".to_string(),
            "provider-codex-image-stream-local-1".to_string(),
            "openai:image".to_string(),
            Some("openai".to_string()),
            Some("image".to_string()),
            true,
        )
        .expect("endpoint should build")
        .with_transport_fields(
            "https://chatgpt.com/backend-api/codex".to_string(),
            None,
            None,
            Some(2),
            None,
            Some(serde_json::json!({"upstream_stream_policy":"force_stream"})),
            None,
            None,
        )
        .expect("endpoint transport should build")
    }

    fn sample_provider_catalog_key() -> StoredProviderCatalogKey {
        let encrypted_auth_config = encrypt_python_fernet_plaintext(
            DEVELOPMENT_ENCRYPTION_KEY,
            r#"{"provider_type":"codex","refresh_token":"rt-codex-image-stream-local-123"}"#,
        )
        .expect("auth config should encrypt");
        StoredProviderCatalogKey::new(
            "key-codex-image-stream-local-1".to_string(),
            "provider-codex-image-stream-local-1".to_string(),
            "oauth".to_string(),
            "oauth".to_string(),
            None,
            true,
        )
        .expect("key should build")
        .with_transport_fields(
            Some(serde_json::json!(["openai:image"])),
            encrypt_python_fernet_plaintext(DEVELOPMENT_ENCRYPTION_KEY, "__placeholder__")
                .expect("placeholder api key should encrypt"),
            Some(encrypted_auth_config),
            None,
            Some(serde_json::json!({"openai:image": 1})),
            None,
            None,
            None,
            None,
        )
        .expect("key transport should build")
    }

    let seen_execution_runtime = Arc::new(Mutex::new(None::<SeenExecutionRuntimeStreamRequest>));
    let seen_execution_runtime_clone = Arc::clone(&seen_execution_runtime);
    let seen_refresh = Arc::new(Mutex::new(None::<SeenRefreshRequest>));
    let seen_refresh_clone = Arc::clone(&seen_refresh);

    let refresh = Router::new().route(
        "/oauth/token",
        any(move |request: Request| {
            let seen_refresh_inner = Arc::clone(&seen_refresh_clone);
            async move {
                let (parts, body) = request.into_parts();
                let raw_body = to_bytes(body, usize::MAX).await.expect("body should read");
                *seen_refresh_inner.lock().expect("mutex should lock") = Some(SeenRefreshRequest {
                    content_type: parts
                        .headers
                        .get(http::header::CONTENT_TYPE)
                        .and_then(|value| value.to_str().ok())
                        .unwrap_or_default()
                        .to_string(),
                    body: String::from_utf8(raw_body.to_vec())
                        .expect("refresh body should be utf8"),
                });
                Json(json!({
                    "access_token": "refreshed-codex-image-stream-access-token",
                    "refresh_token": "rt-codex-image-stream-local-456",
                    "token_type": "Bearer",
                    "expires_in": 3600
                }))
            }
        }),
    );

    let execution_runtime = Router::new().route(
        "/v1/execute/stream",
        any(move |request: Request| {
            let seen_execution_runtime_inner = Arc::clone(&seen_execution_runtime_clone);
            async move {
                let (parts, body) = request.into_parts();
                let raw_body = to_bytes(body, usize::MAX).await.expect("body should read");
                let payload: serde_json::Value = serde_json::from_slice(&raw_body)
                    .expect("execution runtime payload should parse");
                *seen_execution_runtime_inner
                    .lock()
                    .expect("mutex should lock") = Some(SeenExecutionRuntimeStreamRequest {
                    trace_id: parts
                        .headers
                        .get(TRACE_ID_HEADER)
                        .and_then(|value| value.to_str().ok())
                        .unwrap_or_default()
                        .to_string(),
                    url: payload
                        .get("url")
                        .and_then(|value| value.as_str())
                        .unwrap_or_default()
                        .to_string(),
                    model: payload
                        .get("body")
                        .and_then(|value| value.get("json_body"))
                        .and_then(|value| value.get("model"))
                        .and_then(|value| value.as_str())
                        .unwrap_or_default()
                        .to_string(),
                    authorization: payload
                        .get("headers")
                        .and_then(|value| value.get("authorization"))
                        .and_then(|value| value.as_str())
                        .unwrap_or_default()
                        .to_string(),
                    x_client_request_id: payload
                        .get("headers")
                        .and_then(|value| value.get("x-client-request-id"))
                        .and_then(|value| value.as_str())
                        .unwrap_or_default()
                        .to_string(),
                    tool_type: payload
                        .get("body")
                        .and_then(|value| value.get("json_body"))
                        .and_then(|value| value.get("tools"))
                        .and_then(|value| value.get(0))
                        .and_then(|value| value.get("type"))
                        .and_then(|value| value.as_str())
                        .unwrap_or_default()
                        .to_string(),
                    tool_action: payload
                        .get("body")
                        .and_then(|value| value.get("json_body"))
                        .and_then(|value| value.get("tools"))
                        .and_then(|value| value.get(0))
                        .and_then(|value| value.get("action"))
                        .and_then(|value| value.as_str())
                        .unwrap_or_default()
                        .to_string(),
                    tool_partial_images: payload
                        .get("body")
                        .and_then(|value| value.get("json_body"))
                        .and_then(|value| value.get("tools"))
                        .and_then(|value| value.get(0))
                        .and_then(|value| value.get("partial_images"))
                        .and_then(|value| value.as_u64()),
                    request_stream: payload
                        .get("body")
                        .and_then(|value| value.get("json_body"))
                        .and_then(|value| value.get("stream"))
                        .and_then(|value| value.as_bool())
                        .unwrap_or(false),
                    plan_stream: payload
                        .get("stream")
                        .and_then(|value| value.as_bool())
                        .unwrap_or(false),
                });
                let frames = concat!(
                    "{\"type\":\"headers\",\"payload\":{\"kind\":\"headers\",\"status_code\":200,\"headers\":{\"content-type\":\"text/event-stream\"}}}\n",
                    "{\"type\":\"data\",\"payload\":{\"kind\":\"data\",\"text\":\"event: response.output_item.done\\ndata: {\\\"type\\\":\\\"response.output_item.done\\\",\\\"output_index\\\":0,\\\"item\\\":{\\\"id\\\":\\\"ig_123\\\",\\\"type\\\":\\\"image_generation_call\\\",\\\"result\\\":\\\"aGVsbG8=\\\"}}\\n\\n\"}}\n",
                    "{\"type\":\"data\",\"payload\":{\"kind\":\"data\",\"text\":\"event: response.completed\\ndata: {\\\"type\\\":\\\"response.completed\\\",\\\"response\\\":{\\\"tool_usage\\\":{\\\"image_gen\\\":{\\\"input_tokens\\\":11,\\\"output_tokens\\\":22,\\\"total_tokens\\\":33}}}}\\n\\n\"}}\n",
                    "{\"type\":\"telemetry\",\"payload\":{\"kind\":\"telemetry\",\"telemetry\":{\"elapsed_ms\":41}}}\n",
                    "{\"type\":\"eof\",\"payload\":{\"kind\":\"eof\"}}\n"
                );
                let mut response = http::Response::builder()
                    .status(StatusCode::OK)
                    .body(Body::from(frames))
                    .expect("response should build");
                response.headers_mut().insert(
                    http::header::CONTENT_TYPE,
                    http::HeaderValue::from_static("application/x-ndjson"),
                );
                response
            }
        }),
    );

    let client_api_key = "sk-client-codex-image-stream-local";
    let auth_repository = Arc::new(InMemoryAuthApiKeySnapshotRepository::seed(vec![(
        Some(hash_api_key(client_api_key)),
        sample_auth_snapshot(
            "key-codex-image-stream-client-123",
            "user-codex-image-stream-client-123",
        ),
    )]));
    let candidate_selection_repository =
        Arc::new(InMemoryMinimalCandidateSelectionReadRepository::seed(vec![
            sample_candidate_row(),
        ]));
    let provider_catalog_repository = Arc::new(InMemoryProviderCatalogReadRepository::seed(
        vec![sample_provider_catalog_provider()],
        vec![sample_provider_catalog_endpoint()],
        vec![sample_provider_catalog_key()],
    ));

    let (refresh_url, refresh_handle) = start_server(refresh).await;
    let (execution_runtime_url, execution_runtime_handle) = start_server(execution_runtime).await;
    let oauth_refresh =
        crate::provider_transport::LocalOAuthRefreshCoordinator::with_adapters_for_tests(vec![
            Arc::new(
                crate::provider_transport::oauth_refresh::GenericOAuthRefreshAdapter::default()
                    .with_token_url_for_tests("codex", format!("{refresh_url}/oauth/token")),
            ),
        ]);
    let gateway_state = build_state_with_execution_runtime_override(execution_runtime_url.clone())
        .with_data_state_for_tests(
            crate::data::GatewayDataState::with_auth_candidate_selection_provider_catalog_and_request_candidate_repository_for_tests(
                auth_repository,
                candidate_selection_repository,
                provider_catalog_repository,
                Arc::new(InMemoryRequestCandidateRepository::default()),
                DEVELOPMENT_ENCRYPTION_KEY,
            ),
        )
        .with_oauth_refresh_coordinator_for_tests(oauth_refresh);
    let gateway = build_router_with_state(gateway_state);
    let (gateway_url, gateway_handle) = start_server(gateway).await;

    let response = reqwest::Client::new()
        .post(format!("{gateway_url}/v1/images/generations"))
        .header(http::header::CONTENT_TYPE, "application/json")
        .header(
            http::header::AUTHORIZATION,
            format!("Bearer {client_api_key}"),
        )
        .header(TRACE_ID_HEADER, "trace-codex-image-stream-local-123")
        .body(
            "{\"model\":\"gpt-image-2\",\"prompt\":\"生成一张中国历史视觉海报\",\"stream\":true,\"partial_images\":1}",
        )
        .send()
        .await
        .expect("request should succeed");

    assert_eq!(response.status(), StatusCode::OK);
    assert_eq!(
        response
            .headers()
            .get(http::header::CONTENT_TYPE)
            .and_then(|value| value.to_str().ok()),
        Some("text/event-stream")
    );
    let response_text = response.text().await.expect("body should read");
    assert!(response_text.contains("event: image_generation.partial_image"));
    assert!(response_text.contains("\"type\":\"image_generation.partial_image\""));
    assert!(response_text.contains("\"b64_json\":\"aGVsbG8=\""));
    assert!(response_text.contains("event: image_generation.completed"));
    assert!(response_text.contains("\"type\":\"image_generation.completed\""));
    assert!(response_text.contains("\"total_tokens\":33"));
    assert!(!response_text.contains("response.completed"));

    let seen_refresh_request = seen_refresh
        .lock()
        .expect("mutex should lock")
        .clone()
        .expect("refresh request should be captured");
    assert_eq!(
        seen_refresh_request.content_type,
        "application/x-www-form-urlencoded"
    );
    assert!(seen_refresh_request
        .body
        .contains("refresh_token=rt-codex-image-stream-local-123"));

    let seen_execution_runtime_request = seen_execution_runtime
        .lock()
        .expect("mutex should lock")
        .clone()
        .expect("execution runtime stream should be captured");
    assert_eq!(
        seen_execution_runtime_request.trace_id,
        "trace-codex-image-stream-local-123"
    );
    assert_eq!(
        seen_execution_runtime_request.url,
        "https://chatgpt.com/backend-api/codex/responses"
    );
    assert_eq!(
        seen_execution_runtime_request.model,
        CODEX_OPENAI_IMAGE_INTERNAL_MODEL
    );
    assert_eq!(
        seen_execution_runtime_request.authorization,
        "Bearer refreshed-codex-image-stream-access-token"
    );
    assert_eq!(
        seen_execution_runtime_request.x_client_request_id,
        "trace-codex-image-stream-local-123"
    );
    assert_eq!(seen_execution_runtime_request.tool_type, "image_generation");
    assert_eq!(seen_execution_runtime_request.tool_action, "generate");
    assert_eq!(seen_execution_runtime_request.tool_partial_images, Some(1));
    assert!(seen_execution_runtime_request.request_stream);
    assert!(seen_execution_runtime_request.plan_stream);

    gateway_handle.abort();
    execution_runtime_handle.abort();
    refresh_handle.abort();
}

#[tokio::test]
async fn gateway_bridges_codex_image_sync_json_to_streaming_image_sse() {
    #[derive(Debug, Clone)]
    struct SeenExecutionRuntimeStreamRequest {
        trace_id: String,
        request_stream: bool,
        plan_stream: bool,
    }

    fn hash_api_key(value: &str) -> String {
        let mut hasher = Sha256::new();
        hasher.update(value.as_bytes());
        format!("{:x}", hasher.finalize())
    }

    fn sample_auth_snapshot(api_key_id: &str, user_id: &str) -> StoredAuthApiKeySnapshot {
        StoredAuthApiKeySnapshot::new(
            user_id.to_string(),
            "alice".to_string(),
            Some("[email protected]".to_string()),
            "user".to_string(),
            "local".to_string(),
            true,
            false,
            Some(serde_json::json!(["openai", "codex"])),
            Some(serde_json::json!(["openai:image"])),
            Some(serde_json::json!(["gpt-image-2"])),
            api_key_id.to_string(),
            Some("default".to_string()),
            true,
            false,
            false,
            Some(60),
            Some(5),
            Some(4_102_444_800_i64),
            Some(serde_json::json!(["openai", "codex"])),
            Some(serde_json::json!(["openai:image"])),
            Some(serde_json::json!(["gpt-image-2"])),
        )
        .expect("auth snapshot should build")
    }

    fn sample_candidate_row() -> StoredMinimalCandidateSelectionRow {
        StoredMinimalCandidateSelectionRow {
            provider_id: "provider-codex-image-stream-local-1".to_string(),
            provider_name: "codex".to_string(),
            provider_type: "codex".to_string(),
            provider_priority: 10,
            provider_is_active: true,
            endpoint_id: "endpoint-codex-image-stream-local-1".to_string(),
            endpoint_api_format: "openai:image".to_string(),
            endpoint_api_family: Some("openai".to_string()),
            endpoint_kind: Some("image".to_string()),
            endpoint_is_active: true,
            key_id: "key-codex-image-stream-local-1".to_string(),
            key_name: "oauth".to_string(),
            key_auth_type: "oauth".to_string(),
            key_is_active: true,
            key_api_formats: Some(vec!["openai:image".to_string()]),
            key_allowed_models: None,
            key_capabilities: None,
            key_internal_priority: 5,
            key_global_priority_by_format: Some(serde_json::json!({"openai:image": 1})),
            model_id: "model-codex-image-stream-local-1".to_string(),
            global_model_id: "global-model-codex-image-stream-local-1".to_string(),
            global_model_name: "gpt-image-2".to_string(),
            global_model_mappings: None,
            global_model_supports_streaming: Some(true),
            model_provider_model_name: "gpt-image-2".to_string(),
            model_provider_model_mappings: Some(vec![StoredProviderModelMapping {
                name: "gpt-image-2".to_string(),
                priority: 1,
                api_formats: Some(vec!["openai:image".to_string()]),
                endpoint_ids: None,
            }]),
            model_supports_streaming: Some(true),
            model_is_active: true,
            model_is_available: true,
        }
    }

    fn sample_provider_catalog_provider() -> StoredProviderCatalogProvider {
        StoredProviderCatalogProvider::new(
            "provider-codex-image-stream-local-1".to_string(),
            "codex".to_string(),
            Some("https://chatgpt.com".to_string()),
            "codex".to_string(),
        )
        .expect("provider should build")
        .with_transport_fields(
            true,
            false,
            false,
            None,
            Some(2),
            None,
            Some(20.0),
            None,
            None,
        )
    }

    fn sample_provider_catalog_endpoint() -> StoredProviderCatalogEndpoint {
        StoredProviderCatalogEndpoint::new(
            "endpoint-codex-image-stream-local-1".to_string(),
            "provider-codex-image-stream-local-1".to_string(),
            "openai:image".to_string(),
            Some("openai".to_string()),
            Some("image".to_string()),
            true,
        )
        .expect("endpoint should build")
        .with_transport_fields(
            "https://chatgpt.com/backend-api/codex".to_string(),
            None,
            None,
            Some(2),
            None,
            Some(serde_json::json!({"upstream_stream_policy":"force_stream"})),
            None,
            None,
        )
        .expect("endpoint transport should build")
    }

    fn sample_provider_catalog_key() -> StoredProviderCatalogKey {
        let encrypted_auth_config = encrypt_python_fernet_plaintext(
            DEVELOPMENT_ENCRYPTION_KEY,
            r#"{"provider_type":"codex","refresh_token":"rt-codex-image-stream-local-123"}"#,
        )
        .expect("auth config should encrypt");
        StoredProviderCatalogKey::new(
            "key-codex-image-stream-local-1".to_string(),
            "provider-codex-image-stream-local-1".to_string(),
            "oauth".to_string(),
            "oauth".to_string(),
            None,
            true,
        )
        .expect("key should build")
        .with_transport_fields(
            Some(serde_json::json!(["openai:image"])),
            encrypt_python_fernet_plaintext(DEVELOPMENT_ENCRYPTION_KEY, "__placeholder__")
                .expect("placeholder api key should encrypt"),
            Some(encrypted_auth_config),
            None,
            Some(serde_json::json!({"openai:image": 1})),
            None,
            None,
            None,
            None,
        )
        .expect("key transport should build")
    }

    let seen_execution_runtime = Arc::new(Mutex::new(None::<SeenExecutionRuntimeStreamRequest>));
    let seen_execution_runtime_clone = Arc::clone(&seen_execution_runtime);
    let refresh = Router::new().route(
        "/oauth/token",
        any(move |_request: Request| async move {
            Json(json!({
                "access_token": "refreshed-codex-image-stream-access-token",
                "refresh_token": "rt-codex-image-stream-local-456",
                "token_type": "Bearer",
                "expires_in": 3600
            }))
        }),
    );

    let execution_runtime = Router::new().route(
        "/v1/execute/stream",
        any(move |request: Request| {
            let seen_execution_runtime_inner = Arc::clone(&seen_execution_runtime_clone);
            async move {
                let (parts, body) = request.into_parts();
                let raw_body = to_bytes(body, usize::MAX).await.expect("body should read");
                let payload: serde_json::Value = serde_json::from_slice(&raw_body)
                    .expect("execution runtime payload should parse");
                *seen_execution_runtime_inner
                    .lock()
                    .expect("mutex should lock") = Some(SeenExecutionRuntimeStreamRequest {
                    trace_id: parts
                        .headers
                        .get(TRACE_ID_HEADER)
                        .and_then(|value| value.to_str().ok())
                        .unwrap_or_default()
                        .to_string(),
                    request_stream: payload
                        .get("body")
                        .and_then(|value| value.get("json_body"))
                        .and_then(|value| value.get("stream"))
                        .and_then(|value| value.as_bool())
                        .unwrap_or(false),
                    plan_stream: payload
                        .get("stream")
                        .and_then(|value| value.as_bool())
                        .unwrap_or(false),
                });
                let frames = concat!(
                    "{\"type\":\"headers\",\"payload\":{\"kind\":\"headers\",\"status_code\":200,\"headers\":{\"content-type\":\"application/json\"}}}\n",
                    "{\"type\":\"data\",\"payload\":{\"kind\":\"data\",\"text\":\"{\\\"created\\\":1776991097,\\\"data\\\":[{\\\"b64_json\\\":\\\"aGVsbG8=\\\"}],\\\"usage\\\":{\\\"total_tokens\\\":100,\\\"input_tokens\\\":50,\\\"output_tokens\\\":50,\\\"input_tokens_details\\\":{\\\"text_tokens\\\":10,\\\"image_tokens\\\":40}}}\"}}\n",
                    "{\"type\":\"telemetry\",\"payload\":{\"kind\":\"telemetry\",\"telemetry\":{\"elapsed_ms\":41}}}\n",
                    "{\"type\":\"eof\",\"payload\":{\"kind\":\"eof\"}}\n"
                );
                let mut response = http::Response::builder()
                    .status(StatusCode::OK)
                    .body(Body::from(frames))
                    .expect("response should build");
                response.headers_mut().insert(
                    http::header::CONTENT_TYPE,
                    http::HeaderValue::from_static("application/x-ndjson"),
                );
                response
            }
        }),
    );

    let client_api_key = "sk-client-codex-image-stream-local";
    let auth_repository = Arc::new(InMemoryAuthApiKeySnapshotRepository::seed(vec![(
        Some(hash_api_key(client_api_key)),
        sample_auth_snapshot(
            "key-codex-image-stream-client-123",
            "user-codex-image-stream-client-123",
        ),
    )]));
    let candidate_selection_repository =
        Arc::new(InMemoryMinimalCandidateSelectionReadRepository::seed(vec![
            sample_candidate_row(),
        ]));
    let provider_catalog_repository = Arc::new(InMemoryProviderCatalogReadRepository::seed(
        vec![sample_provider_catalog_provider()],
        vec![sample_provider_catalog_endpoint()],
        vec![sample_provider_catalog_key()],
    ));

    let (refresh_url, refresh_handle) = start_server(refresh).await;
    let (execution_runtime_url, execution_runtime_handle) = start_server(execution_runtime).await;
    let oauth_refresh =
        crate::provider_transport::LocalOAuthRefreshCoordinator::with_adapters_for_tests(vec![
            Arc::new(
                crate::provider_transport::oauth_refresh::GenericOAuthRefreshAdapter::default()
                    .with_token_url_for_tests("codex", format!("{refresh_url}/oauth/token")),
            ),
        ]);
    let gateway_state = build_state_with_execution_runtime_override(execution_runtime_url.clone())
        .with_data_state_for_tests(
            crate::data::GatewayDataState::with_auth_candidate_selection_provider_catalog_and_request_candidate_repository_for_tests(
                auth_repository,
                candidate_selection_repository,
                provider_catalog_repository,
                Arc::new(InMemoryRequestCandidateRepository::default()),
                DEVELOPMENT_ENCRYPTION_KEY,
            ),
        )
        .with_oauth_refresh_coordinator_for_tests(oauth_refresh);
    let gateway = build_router_with_state(gateway_state);
    let (gateway_url, gateway_handle) = start_server(gateway).await;

    let response = reqwest::Client::new()
        .post(format!("{gateway_url}/v1/images/generations"))
        .header(http::header::CONTENT_TYPE, "application/json")
        .header(
            http::header::AUTHORIZATION,
            format!("Bearer {client_api_key}"),
        )
        .header(TRACE_ID_HEADER, "trace-codex-image-stream-json-123")
        .body("{\"model\":\"gpt-image-2\",\"prompt\":\"生成一张海报\",\"stream\":true}")
        .send()
        .await
        .expect("request should succeed");

    assert_eq!(response.status(), StatusCode::OK);
    assert_eq!(
        response
            .headers()
            .get(http::header::CONTENT_TYPE)
            .and_then(|value| value.to_str().ok()),
        Some("text/event-stream")
    );
    let response_text = response.text().await.expect("body should read");
    assert!(response_text.contains("event: image_generation.completed"));
    assert!(response_text.contains("\"type\":\"image_generation.completed\""));
    assert!(response_text.contains("\"b64_json\":\"aGVsbG8=\""));
    assert!(response_text.contains("\"total_tokens\":100"));
    assert!(!response_text.trim_start().starts_with('{'));
    assert!(!response_text.contains("\"created\": 1776991097"));

    let seen_execution_runtime_request = seen_execution_runtime
        .lock()
        .expect("mutex should lock")
        .clone()
        .expect("execution runtime stream should be captured");
    assert_eq!(
        seen_execution_runtime_request.trace_id,
        "trace-codex-image-stream-json-123"
    );
    assert!(seen_execution_runtime_request.request_stream);
    assert!(seen_execution_runtime_request.plan_stream);

    gateway_handle.abort();
    execution_runtime_handle.abort();
    refresh_handle.abort();
}