code: def test_hermite_kochanek_bartels(Chart, datas):
      """Test hermite kochanek bartels interpolation"""
      chart = Chart(
          interpolate="hermite",
          interpolation_parameters={
              "type": "kochanek_bartels",
              "b": -1,
              "c": 1,
              "t": 1,
          },
      )
      chart = make_data(chart, datas)
      assert chart.render()
  
      chart = Chart(
          interpolate="hermite",
          interpolation_parameters={
              "type": "kochanek_bartels",
              "b": -1,
              "c": -8,
              "t": 0,
          },
      )
      chart = make_data(chart, datas)
      assert chart.render()
  
      chart = Chart(
          interpolate="hermite",
          interpolation_parameters={
              "type": "kochanek_bartels",
              "b": 0,
              "c": 10,
              "t": -1,
          },
      )
      chart = make_data(chart, datas)
      assert chart.render()
  
file_path: pygal/pygal/test/test_interpolate.py
imports: from pygal.test import make_data
label_desc: Use image node_id 10 for calling a global function with example usage: test_hermite_kochanek_bartels(Chart, datas) without return types