code: def test_default():
      ortho = ccrs.Orthographic()
      other_args = {"a=6378137.0", "lon_0=0.0", "lat_0=0.0"}
      check_proj_params("ortho", ortho, other_args)
  
      # WGS84 radius * 0.99999
      assert_almost_equal(
          np.array(ortho.x_limits), [-6378073.21863, 6378073.21863]
      )
      assert_almost_equal(
          np.array(ortho.y_limits), [-6378073.21863, 6378073.21863]
      )
  
file_path: cartopy/lib/cartopy/tests/crs/test_orthographic.py
imports: import numpy
  from numpy.testing import assert_almost_equal
  import pytest
  import cartopy.crs
  from .helpers import check_proj_params
label_desc: Use image node_id 1 for calling a global function with example usage: test_default() without return types