docstr: Tests that the shape exceptions are properly raised.
docstr_tok: ["Tests","that","the","shape","exceptions","are","properly","raised","."]
code: def test_vertex_normals_exception_raised(self, error_msg, *shapes):
      """Tests that the shape exceptions are properly raised."""
      self.assert_exception_is_raised(
          normals.vertex_normals, error_msg, shapes
      )
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from absl.testing import parameterized
  import numpy
  from six.moves import range
  import tensorflow
  from tensorflow_graphics.geometry.representation.mesh import normals
  from tensorflow_graphics.util import test_case
label_desc: Use image node_id 12 for calling the MeshTest obj's underlying member method code with example usage: obj.test_vertex_normals_exception_raised(error_msg) without return types