code: def test_default():
      gnom = ccrs.Gnomonic()
      other_args = {"a=6378137.0", "lon_0=0.0", "lat_0=0.0"}
      check_proj_params("gnom", gnom, other_args)
  
      assert_almost_equal(np.array(gnom.x_limits), [-5e7, 5e7])
      assert_almost_equal(np.array(gnom.y_limits), [-5e7, 5e7])
  
file_path: cartopy/lib/cartopy/tests/crs/test_gnomonic.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