code: def test_get_term_and_background_counts(self):
      df = self.term_cat_freq.get_term_and_background_counts()
      self.assertGreater(len(df), 20)
      self.assertEqual(sum(df.corpus > 0), 3)
      self.assertEqual(set(df.columns), {"corpus", "background"})
  
file_path: scattertext/scattertext/test/test_termCategoryFrequencies.py
imports: from unittest import TestCase
  import numpy
  import pandas
  from scattertext.ScatterChartData import ScatterChartData
  from scattertext.TermCategoryFrequencies import TermCategoryFrequencies
label_desc: Use image node_id 5 for calling the TestTermCategoryFrequencies obj's underlying member method code with example usage: obj.test_get_term_and_background_counts() without return types