code: def test_column_chart(self):
      text = self.table.column_chart(label="three", value="one")
      svg = self.parse_svg(text)
  
      self.assertElementCount(svg, ".axis", 2)
      self.assertElementCount(svg, ".series", 1)
      self.assertElementCount(svg, ".columns", 1)
      self.assertElementCount(svg, "rect", 3)
  
      text2 = self.table.column_chart(label=2, value=0)
  
      self.assertEqual(text, text2)
  
file_path: agate/tests/test_table/test_charting.py
imports: import leather
  from agate import Table
  from agate.data_types import Number, Text
label_desc: Use image node_id 3 for calling the TestTableCharts obj's underlying member method code with example usage: obj.test_column_chart() without return types