def test_NaOH(self): self.assertEqual(format_elements('Na, O , h'),'na,o,h')
def test_NaOH(self): self.assertEqual(format_elements('Na, O , h'), 'na,o,h')
def test_quit(self): self.assertEqual(format_elements(' Q uI t'),'quit')
def test_quit(self): self.assertEqual(format_elements(' Q uI t'), 'quit')