chore: import upstream snapshot with attribution

servers/fastapi/tests/unit/test_codex_models.py

@@ -0,0 +1,19 @@
+from constants.llm import DEFAULT_CODEX_MODEL, SUPPORTED_CODEX_MODELS
+from enums.llm_provider import LLMProvider
+from utils import llm_provider
+
+
+def test_codex_supported_model_is_preserved(monkeypatch):
+    monkeypatch.setattr(llm_provider, "get_llm_provider", lambda: LLMProvider.CODEX)
+    monkeypatch.setattr(llm_provider, "get_codex_model_env", lambda: "gpt-5.4-mini")
+
+    assert llm_provider.get_model() == "gpt-5.4-mini"
+
+
+def test_codex_deprecated_model_falls_back_to_default(monkeypatch):
+    monkeypatch.setattr(llm_provider, "get_llm_provider", lambda: LLMProvider.CODEX)
+    monkeypatch.setattr(llm_provider, "get_codex_model_env", lambda: "gpt-5.2")
+
+    assert DEFAULT_CODEX_MODEL == "gpt-5.5"
+    assert "gpt-5.2" not in SUPPORTED_CODEX_MODELS
+    assert llm_provider.get_model() == DEFAULT_CODEX_MODEL