code: def test_az_vector():
      pytest.importorskip("numpy")
      a, b = vincenty.vreckon(*ll0, sr1[0], az1)
      assert a == approx(lat2)
      assert b == approx(lon2)
  
imports: from math import radians
  import pymap3d.vincenty
  import pytest
  from pytest import approx
label_desc: Use image node_id 2 for calling a global function with example usage: test_az_vector() without return types