code: def test_inertia(self):
      result = pandas_ta.inertia(self.close)
      self.assertIsInstance(result, Series)
      self.assertEqual(result.name, "INERTIA_20_14")
  
      result = pandas_ta.inertia(
          self.close, self.high, self.low, refined=True
      )
      self.assertIsInstance(result, Series)
      self.assertEqual(result.name, "INERTIAr_20_14")
  
      result = pandas_ta.inertia(
          self.close, self.high, self.low, thirds=True
      )
      self.assertIsInstance(result, Series)
      self.assertEqual(result.name, "INERTIAt_20_14")
  
imports: from .config import error_analysis, sample_data, CORRELATION, CORRELATION_THRESHOLD, VERBOSE
  from .context import pandas_ta
  from unittest import TestCase, skip
  import pandas.testing
  from pandas import DataFrame, Series
  import talib
label_desc: Use image node_id 22 for calling the TestMomentum obj's underlying member method code with example usage: obj.test_inertia() without return types