class_docstr: https://www.investopedia.com/articles/forex/10/schaff-trend-cycle-indicator.asp
  https://docs.google.com/spreadsheets/d/1z6o_R_hCGCGQARC791KdrOD5E69IhjAXbXqi1014hcs/edit?usp=sharing
class_docstr_tok: ["https",":","\/\/www.investopedia.com\/articles\/forex\/10\/schaff-trend-cycle-indicator.asp","https",":","\/\/docs.google.com\/spreadsheets\/d\/1z6o_R_hCGCGQARC791KdrOD5E69IhjAXbXqi1014hcs\/edit","?","usp=sharing"]
code: def setUpClass(cls):
      cls._df = pd.read_csv(cls._filename, sep=",")
      cls._params = {
          "close": cls._df["Close"],
          "window_slow": 50,
          "window_fast": 23,
          "cycle": 10,
          "smooth1": 3,
          "smooth2": 3,
          "fillna": False,
      }
      cls._indicator = STCIndicator(**cls._params)
  
imports: import unittest
  import pandas
  from ta.trend import MACD, ADXIndicator, CCIIndicator, PSARIndicator, STCIndicator, VortexIndicator, WMAIndicator, adx, adx_neg, adx_pos, cci, macd, macd_diff, macd_signal, psar_down, psar_down_indicator, psar_up, psar_up_indicator, stc, vortex_indicator_neg, vortex_indicator_pos, wma_indicator
label_desc: Use image node_id 1 for calling the TestSTCIndicator obj's underlying member method code with example usage: obj.setUpClass(cls) without return types