code: def test_pass_args(self):
      layer = Directions(self.start, self.end)
      state = layer.get_state()
      assert state["start"] == self.start
      assert state["end"] == self.end
      assert state["waypoints"] == []
  
imports: import unittest
  import pytest
  import traitlets
  from ..directions import Directions, DEFAULT_STROKE_COLOR
label_desc: Use image node_id 3 for calling the DirectionsLayer obj's underlying member method code with example usage: obj.test_pass_args() without return types