code: def test_groups_less_that_two_points():
      data = pd.DataFrame(
          {
              "A": [1, 2, 3, 4, 5],
              "B": [0, 0, 1, 2, 2],
              "C": [1, 2, 3, 4, 5],
              "D": [1, 2, 3, 4, 5],
          }
      )
  
      p = ggplot(data) + geom_line(
          aes(x="A", y="C", group="B", color="D"), size=2
      )
      p.draw_test()
  
file_path: plotnine/tests/test_geom_path_line_step.py
imports: import numpy
  import pandas
  import pytest
  from plotnine import aes, arrow, facet_grid, geom_line, geom_path, geom_point, geom_step, ggplot
  from plotnine.exceptions import PlotnineWarning
label_desc: Use image node_id 9 for calling a global function with example usage: test_groups_less_that_two_points() without return types