def METHOD_NAME():
    listdir = MockListDir(path='/etc/systemd/system', file_names=['spamassassin.service'])
    overridden = spamassassinconfigread_spamd.spamassassin_service_overriden(listdir.listdir)
    assert overridden is True
    listdir = MockListDir(path='/etc/systemd/system',
                          file_names=['foo.service', 'spamassassin.service', 'bar.service'])
    overridden = spamassassinconfigread_spamd.spamassassin_service_overriden(listdir.listdir)
    assert overridden is True
    assert not listdir.error