new_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  """
  test_dynamics.test_shapes
  """
  from __future__ import unicode_literals, print_function, absolute_import
  
  import unittest
  
  import bullet
  
  
  class CollisionShapeTestCase(unittest.TestCase):
      def test_raise(self):
          def _instantiate_abstract():
              bullet.btCollisionShape()
          self.assertRaises(_instantiate_abstract)
  
subject: add base tests for collision shape internal base class