From 1d41ef724a2cb50945ae8699b3e1b5b759747a0a Mon Sep 17 00:00:00 2001
From: Peter Steinberger <steipete@gmail.com>
Date: Thu, 16 Apr 2026 17:03:12 +0100
Subject: [PATCH] test: isolate tts provider auto-selection env

---
 test/helpers/plugins/tts-contract-suites.ts | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/test/helpers/plugins/tts-contract-suites.ts b/test/helpers/plugins/tts-contract-suites.ts
index 4ebc8318397..7ca6f01cdfa 100644
--- a/test/helpers/plugins/tts-contract-suites.ts
+++ b/test/helpers/plugins/tts-contract-suites.ts
@@ -664,8 +664,19 @@ export function describeTtsConfigContract() {
         });
         const config = resolveTtsConfig(cfg);
         const prefsPath = `/tmp/tts-prefs-google-model-provider-${Date.now()}.json`;
-
-        expect(getTtsProvider(config, prefsPath)).toBe("google");
+        withEnv(
+          {
+            OPENAI_API_KEY: undefined,
+            ELEVENLABS_API_KEY: undefined,
+            XI_API_KEY: undefined,
+            MINIMAX_API_KEY: undefined,
+            GEMINI_API_KEY: undefined,
+            GOOGLE_API_KEY: undefined,
+          },
+          () => {
+            expect(getTtsProvider(config, prefsPath)).toBe("google");
+          },
+        );
       });
     });