def METHOD_NAME(self):
    """test field validation"""
    # get user
    testuser = User.objects.get(
        username='testuser_system_importer_file_csv_config'
    ).id
    # get objects
    analysisstatus_1 = Analysisstatus.objects.get(
        analysisstatus_name='analysisstatus_1'
    ).analysisstatus_id
    systemstatus_1 = Systemstatus.objects.get(
        systemstatus_name='systemstatus_1'
    ).systemstatus_id
    # get form
    form = SystemImporterFileCsvConfigForm(
        data={
            'csv_column_system': '1',
            'csv_import_path': '/foobar',
            'csv_import_filename': 'systems.csv',
            'csv_import_username': str(testuser),
            'csv_default_systemstatus': str(systemstatus_1),
            'csv_default_analysisstatus': str(analysisstatus_1),
            'csv_default_tagfree_systemstatus': str(systemstatus_1),
            'csv_default_tagfree_analysisstatus': str(analysisstatus_1),
            'csv_tag_lock_systemstatus': 'LOCK_SYSTEMSTATUS',
            'csv_tag_lock_analysisstatus': 'LOCK_ANALYSISSTATUS',
            'csv_remove_tag': 'tag_remove_prefix',
            'csv_field_delimiter': 'field_comma',
            'csv_text_quote': 'text_double_quotation_marks',
            'csv_ip_delimiter': 'ip_semicolon',
            'csv_tag_delimiter': 'tag_space',
        }
    )
    # compare
    self.assertFalse(form.is_valid())
    self.assertEqual(
        form.errors['csv_import_path'], ['CSV import path does not exist.']
    )