Prevent resource warnings in test_apply_pyprojecttoml

Co-authored-by: Sviatoslav Sydorenko <[email protected]>
pypa · Feb 9, 2022 · f0f5730 · f0f5730
1 parent e2b4e3a
commit f0f5730
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/setuptools/tests/config/test_apply_pyprojecttoml.py b/setuptools/tests/config/test_apply_pyprojecttoml.py
@@ -169,9 +169,9 @@ def download(url, dest):
 
 
 def core_metadata(dist) -> str:
-    buffer = io.StringIO()
-    dist.metadata.write_pkg_file(buffer)
-    value = "\n".join(buffer.getvalue().strip().splitlines())
+    with io.StringIO() as buffer:
+        dist.metadata.write_pkg_file(buffer)
+        value = "\n".join(buffer.getvalue().strip().splitlines())
 
     # ---- DIFF NORMALISATION ----
     # PEP 621 is very particular about author/maintainer metadata conversion, so skip