MAINT: autopep8'd and added licence header

unittests/test_scanner.py

+# encoding: utf-8
+#
+# This file is a part of the CaosDB Project.
+#
+# Copyright (C) 2021      Henrik tom Wörden <h.tomwoerden@indiscale.com>
+#               2021-2023 Research Group Biomedical Physics,
+# Max-Planck-Institute for Dynamics and Self-Organization Göttingen
+# Alexander Schlemmer <alexander.schlemmer@ds.mpg.de>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program. If not, see <https://www.gnu.org/licenses/>.
+#
 
 import json
 import logging
@@ -277,6 +299,7 @@ def test_variable_deletion_problems():
         else:
             raise RuntimeError("Wrong name")
 
+
 def test_record_parents():
     """ Test the correct list of returned records by the scanner     """