code: def test_contour(self):
      with pytest.raises(ValueError):
          self.ax.contour(self.data, transform=ccrs.Geodetic())
  
imports: from unittest import mock
  import matplotlib.path
  import matplotlib.pyplot
  import numpy
  import pytest
  import cartopy.crs
  import cartopy.feature
  from cartopy.mpl.geoaxes import GeoAxes, GeoAxesSubplot, InterProjectionTransform
label_desc: Use image node_id 2 for calling the TestNoSpherical obj's underlying member method code with example usage: obj.test_contour() without return types