Use monkeypatch in test_pytest_version_env_var

Follow up to #12190
pytest-dev · Apr 19, 2024 · ad95d59 · ad95d59
1 parent 48b6d18
commit ad95d59
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/testing/test_runner.py b/testing/test_runner.py
@@ -1097,7 +1097,7 @@ def func() -> None:
 
 
 def test_pytest_version_env_var(pytester: Pytester, monkeypatch: MonkeyPatch) -> None:
-    os.environ["PYTEST_VERSION"] = "old version"
+    monkeypatch.setenv("PYTEST_VERSION", "old version")
     pytester.makepyfile(
         """
         import pytest