From ee1f6d3105f08db385b51c8e9a2e8b1bfef302a2 Mon Sep 17 00:00:00 2001
From: Joseph Magly <1159087+jmagly@users.noreply.github.com>
Date: Fri, 14 Aug 2026 21:53:21 -0400
Subject: [PATCH] test: keep mutation guard Python 3.10 compatible

---
 tests/test_quality_policy.py | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/tests/test_quality_policy.py b/tests/test_quality_policy.py
index 56d85e2..c329325 100644
--- a/tests/test_quality_policy.py
+++ b/tests/test_quality_policy.py
@@ -2,7 +2,6 @@
 
 from __future__ import annotations
 
-import tomllib
 from copy import deepcopy
 from datetime import date
 from pathlib import Path
@@ -11,9 +10,12 @@ from scripts import check_quality_policy as quality
 
 
 def test_mutation_campaign_avoids_native_extension_reload_mode():
-    pyproject = tomllib.loads(Path("pyproject.toml").read_text())
+    pyproject = Path("pyproject.toml").read_text()
+    mutmut_config = pyproject.split("[tool.mutmut]", maxsplit=1)[1].split(
+        "\n[", maxsplit=1,
+    )[0]
 
-    assert pyproject["tool"]["mutmut"]["mutate_only_covered_lines"] is False
+    assert "mutate_only_covered_lines = false" in mutmut_config
 
 
 def _policy():