text: import unittest
  
  from fanalysis.src.fanalysis import generatedata
  from fanalysis.src.fanalysis import plotting as p
  
  from datetime import datetime, timedelta
  import pandas as pd
  
  time_start = datetime.now()
  diff = 500
  time_end = time_start + timedelta(seconds = diff)
  
  df = generatedata.create_data('s', date=time_start,
                  direction='Backwards', num_periods=diff).create_brownian_motion()
  
  df = generatedata.append_data(df).create_brownian_motion()
  
  class TestDataFrameMethods(unittest.TestCase):
      def test_headers(self):
          self.assertEqual(my_plot.header, \
              ['Date', 'bm', 'bm1', 'bm2'])
  
  if __name__ == "__main__":
      my_plot = p.graph_vars(df, )
      my_plot.show()
      unittest.main()
  
  