def __init__(self, ts_start, config, test_id=None):
    self.ts_start = ts_start
    self.ts_end = None
    self.test_id = test_id
    self.config = config
    self.description = ''
    self.input_directory = None
    self.output_directory = None
    self.resource_path = 'resources'
    self.status = CONSTANTS.OK
    self.sla_data = {}
    self.stats_data = {}
    self.variables = None