From 9a34cc91a5bdc2a30da0d3d8df97872a6d09cb6c Mon Sep 17 00:00:00 2001
From: sbe27 <283218367+sbe27@users.noreply.github.com>
Date: Fri, 10 Jul 2026 03:03:51 +0200
Subject: [PATCH] test(context): document Codex cache persistence coverage

---
 tests/agent/test_model_metadata.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tests/agent/test_model_metadata.py b/tests/agent/test_model_metadata.py
index c40e035e93d6..025a78402309 100644
--- a/tests/agent/test_model_metadata.py
+++ b/tests/agent/test_model_metadata.py
@@ -571,7 +571,9 @@ class TestCodexOAuthContextLength:
         fake_response.json.return_value = {
             "models": [{"slug": "gpt-5.6-terra", "context_window": 372_000}]
         }
-
+        # Exercise real persistence here: this test verifies that a live value
+        # replaces the stale on-disk entry. Failure-path tests below mock the
+        # writer because they assert that fallback values are not persisted.
         with patch("agent.model_metadata.requests.get", return_value=fake_response) as mock_get:
             ctx = mm.get_model_context_length(
                 model="gpt-5.6-terra",