code: def test_line_chart(self):
      text = self.table.line_chart(x="one", y="two")
      svg = self.parse_svg(text)
  
      self.assertElementCount(svg, ".axis", 2)
      self.assertElementCount(svg, ".series", 1)
      self.assertElementCount(svg, "path", 1)
  
      text2 = self.table.line_chart(x=0, y=1)
  
      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 4 for calling the TestTableCharts obj's underlying member method code with example usage: obj.test_line_chart() without return types