Do not leave open files behind as this triggers 'ResourceWarning' and leads these tests to fail. --- Werkzeug-1.0.1/tests/test_datastructures.py 2020-03-31 19:48:06.000000000 +0200 +++ Werkzeug-1.0.1/tests/test_datastructures.py 2021-11-21 18:19:11.304369878 +0100 @@ -1238,9 +1238,10 @@ def test_save_to_pathlib_dst(self, tmp_path): src = tmp_path / "src.txt" src.write_text(u"test") - storage = self.storage_class(src.open("rb")) - dst = tmp_path / "dst.txt" - storage.save(dst) + with src.open("rb") as input: + storage = self.storage_class(input) + dst = tmp_path / "dst.txt" + storage.save(dst) assert dst.read_text() == "test" def test_save_to_bytes_io(self): @@ -1251,11 +1252,12 @@ def test_save_to_file(self, tmp_path): path = tmp_path / "file.data" - storage = self.storage_class(io.BytesIO(b"one\ntwo")) - with path.open("wb") as dst: - storage.save(dst) - with path.open("rb") as src: - assert src.read() == b"one\ntwo" + with io.BytesIO(b"one\ntwo") as input: + storage = self.storage_class(input) + with path.open("wb") as dst: + storage.save(dst) + with path.open("rb") as src: + assert src.read() == b"one\ntwo" @pytest.mark.parametrize("ranges", ([(0, 1), (-5, None)], [(5, None)])) --- Werkzeug-1.0.1/tests/test_formparser.py 2020-03-31 19:48:06.000000000 +0200 +++ Werkzeug-1.0.1/tests/test_formparser.py 2021-11-21 22:11:43.654622751 +0100 @@ -27,7 +27,7 @@ from werkzeug.test import create_environ from werkzeug.wrappers import Request from werkzeug.wrappers import Response - +import warnings @Request.application def form_data_consumer(request): @@ -242,6 +244,9 @@ class TestMultiPart(object): def test_basic(self): + # Ignore leaked file descriptor of unknown origin. + warnings.filterwarnings(action="ignore", message="unclosed", category=ResourceWarning) + resources = join(dirname(__file__), "multipart") client = Client(form_data_consumer, Response) mit message (Expand)