code: def test_invalid_y_domain_corner(self):
      # If the point we need to calculate the vector angle falls outside the
      # source projection y-domain and is a corner point, it may be handled
      # incorrectly and a warning should be raised.
      rlon = np.array([180.0])
      rlat = np.array([90.0])
      u = np.array([-1.0])
      v = np.array([1.0])
      src_proj = ccrs.PlateCarree()
      target_proj = ccrs.Stereographic(
          central_latitude=90, central_longitude=0
      )
      with pytest.warns(UserWarning):
          warnings.simplefilter("always")
          ut, vt = target_proj.transform_vectors(
              src_proj, rlon, rlat, u, v
          )
  
file_path: cartopy/lib/cartopy/tests/test_crs_transform_vectors.py
imports: import warnings
  import numpy
  from numpy.testing import assert_array_almost_equal
  import pytest
  import cartopy.crs
label_desc: Use image node_id 8 for calling the TestTransformVectors obj's underlying member method code with example usage: obj.test_invalid_y_domain_corner() without return types