code: def test_meridian_dist(lat, dist):
      assert lox.meridian_dist(lat) == approx(dist)
  
file_path: pymap3d/src/pymap3d/tests/test_rhumb.py
imports: import pymap3d.lox
  import pytest
  from pytest import approx
label_desc: Use image node_id 1 for calling a global function with example usage: test_meridian_dist(lat, dist) without return types