test: cover remaining cloud fallback safeguards

tests/unit/test_gemini_provider.py

@@ -14,6 +14,7 @@ from javis.providers.base import (
     InvalidProviderResponseError,
     MissingApiKeyError,
     ProviderRateLimitError,
+    ProviderTimeoutError,
 )
 from javis.providers.gemini import GeminiProvider
 
@@ -140,6 +141,13 @@ class GeminiProviderTests(unittest.TestCase):
         with self.assertRaises(CloudNetworkError):
             provider.chat([ChatMessage("user", "Was ist Python?")])
 
+    def test_timeout_is_a_distinct_fallback_signal(self) -> None:
+        request = httpx.Request("POST", "https://example.invalid")
+        provider, _ = self._provider(httpx.ReadTimeout("timeout", request=request))
+
+        with self.assertRaises(ProviderTimeoutError):
+            provider.chat([ChatMessage("user", "Was ist Python?")])
+
     def test_empty_response_is_rejected(self) -> None:
         provider, _ = self._provider(_response("  "))