/usr/lib/python3/dist-packages/fixtures/tests/ is in python3-fixtures 0.3.14-1ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python3/dist-packages/fixtures/tests/__init__.py
/usr/lib/python3/dist-packages/fixtures/tests/_fixtures/
/usr/lib/python3/dist-packages/fixtures/tests/_fixtures/__init__.py
/usr/lib/python3/dist-packages/fixtures/tests/_fixtures/test_environ.py
/usr/lib/python3/dist-packages/fixtures/tests/_fixtures/test_logger.py
/usr/lib/python3/dist-packages/fixtures/tests/_fixtures/test_monkeypatch.py
/usr/lib/python3/dist-packages/fixtures/tests/_fixtures/test_packagepath.py
/usr/lib/python3/dist-packages/fixtures/tests/_fixtures/test_popen.py
/usr/lib/python3/dist-packages/fixtures/tests/_fixtures/test_pythonpackage.py
/usr/lib/python3/dist-packages/fixtures/tests/_fixtures/test_pythonpath.py
/usr/lib/python3/dist-packages/fixtures/tests/_fixtures/test_streams.py
/usr/lib/python3/dist-packages/fixtures/tests/_fixtures/test_tempdir.py
/usr/lib/python3/dist-packages/fixtures/tests/_fixtures/test_temphomedir.py
/usr/lib/python3/dist-packages/fixtures/tests/_fixtures/test_timeout.py
/usr/lib/python3/dist-packages/fixtures/tests/helpers.py
/usr/lib/python3/dist-packages/fixtures/tests/test_callmany.py
/usr/lib/python3/dist-packages/fixtures/tests/test_fixture.py
/usr/lib/python3/dist-packages/fixtures/tests/test_testcase.py