class_docstr: BDS Test on GDPC1: 1947Q1 - 2013Q1
  
  References
  ----------
  http://research.stlouisfed.org/fred2/series/GDPC1
class_docstr_tok: ["BDS","Test","on","GDPC1",":","1947Q1","-","2013Q1","References","--","--","--","--","--","http",":","\/\/research.stlouisfed.org\/fred2\/series\/GDPC1"]
code: def setup_class(cls):
      cls.results = results[results[0] == 4]
      cls.bds_stats = np.array(cls.results[2].iloc[1:])
      cls.pvalues = np.array(cls.results[3].iloc[1:])
  
      cls.data = data[3][data[3].notnull()]
      cls.res = bds(cls.data, 5)
  
imports: import os
  import numpy
  from numpy.testing import assert_almost_equal
  import pandas
  from statsmodels.tsa.stattools import bds
label_desc: Use image node_id 1 for calling the TestBDSGDPC1 obj's underlying member method code with example usage: obj.setup_class(cls) without return types