From 0fcec63b685f51cafaff3983dda66a718520c564 Mon Sep 17 00:00:00 2001
From: shaw <dev@sub2api.org>
Date: Mon, 31 Aug 2026 15:15:44 +0800
Subject: [PATCH] test(openai): isolate visible TTFT fixture

---
 .../service/openai_first_output_timeout_test.go        | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/backend/internal/service/openai_first_output_timeout_test.go b/backend/internal/service/openai_first_output_timeout_test.go
index 6783de90d1..4ac568c541 100644
--- a/backend/internal/service/openai_first_output_timeout_test.go
+++ b/backend/internal/service/openai_first_output_timeout_test.go
@@ -403,6 +403,16 @@ func assertOpenAINativeLargeOpenEventTimesOutWithoutLeak(t *testing.T, line stri
 }
 
 func TestOpenAINativeFirstOutputEOFDispatchesTerminalEventWithoutBlankLine(t *testing.T) {
+	gatewayForwardingCache.Store(&cachedGatewayForwardingSettings{
+		openAITTFTMode: OpenAITTFTModeVisible,
+		expiresAt:      time.Now().Add(time.Minute).UnixNano(),
+	})
+	t.Cleanup(func() {
+		gatewayForwardingCache.Store(&cachedGatewayForwardingSettings{
+			openAITTFTMode: OpenAITTFTModeSemantic,
+			expiresAt:      time.Now().Add(time.Minute).UnixNano(),
+		})
+	})
 	cfg := &config.Config{Gateway: config.GatewayConfig{
 		OpenAIFirstOutputTimeoutSeconds: 1,
 		MaxLineSize:                     defaultMaxLineSize,