Tests fail when XDG_CONFIG_HOME is present and not $HOME/.config

My XDG_CONFIG_HOME is $HOME/etc and the test checks for $HOME/.config . Unsetting it before running the testsuite works.

============================= test session starts ==============================
platform linux -- Python 3.7.3, pytest-4.4.0, py-1.8.0, pluggy-0.9.0
rootdir: /home/impreza/usr/src/aports/community/osinfo-db-tools/src/osinfo-db-tools-1.5.0/tests
collected 5 items

test_osinfo_db_path.py ..F..                                             [100%]

=================================== FAILURES ===================================
___________________________ test_osinfo_db_path_user ___________________________

    def test_osinfo_db_path_user():
        """
        Test osinfo-db-path --user
        """
        if "OSINFO_USER_DIR" in os.environ:
            del os.environ["OSINFO_USER_DIR"]
        cmd = [util.Tools.db_path, util.ToolsArgs.USER]
        output = util.get_output(cmd)
        expected_output = os.path.join(os.environ["HOME"], ".config",
                                       "osinfo\n")
>       assert output == expected_output
E       AssertionError: assert '/home/impreza/etc/osinfo\n' == '/home/impreza/.config/osinfo\n'
E         - /home/impreza/etc/osinfo
E         ?               ^^
E         + /home/impreza/.config/osinfo
E         ?               ^ +++++

test_osinfo_db_path.py:51: AssertionError
====================== 1 failed, 4 passed in 0.42 seconds ======================
FAIL test_osinfo_db_path.py (exit status: 1)