new_contents: import sequana.resources.canvas.bar as bar
  
  
  
  def test_bar():
  
      data = [
          {"name":"A", "data":{"R1":10, "R2":90}},
          {"name":"B", "data":{"R1":90, "R2":10}}]
      bar.stacked_bar("title", "ACGT", datalist=data)
  
subject: add new test