def test_add_state_names(self):
    wf = WrangledFrame({'abbrev': ['CA', 'CO', 'CT', 'DC', 'TX']})
    breakpoint()
    wf.add_state_names()
    self.assertEqual(list(wf.columns), ['abbrev', 'name'])
    self.assertEqual(wf['name'][0], 'California')
    self.assertEqual(wf['abbrev'][0], 'CA')
def test_add_state_names(self):
    wf = WrangledFrame({'abbrev': ['CA', 'CO', 'CT', 'DC', 'TX']})
    breakpoint()
    wf.add_state_names()
    self.assertEqual(list(wf.columns), ['abbrev', 'name'])
    self.assertEqual(wf['name'][0], 'California')
    self.assertEqual(wf['abbrev'][0], 'CA')