new_contents: from __future__ import absolute_import
  
  import unittest
  
  import Cython.Compiler.PyrexTypes as PT
  
  
  class TestMethodDispatcherTransform(unittest.TestCase):
  
      def test_widest_numeric_type(self):
          def assert_widest(type1, type2, widest):
              self.assertEqual(widest, PT.widest_numeric_type(type1, type2))
  
          assert_widest(PT.c_int_type, PT.c_long_type, PT.c_long_type)
          assert_widest(PT.c_double_type, PT.c_long_type, PT.c_double_type)
          assert_widest(PT.c_longdouble_type, PT.c_long_type, PT.c_longdouble_type)
  
          cenum = PT.CEnumType("E", "cenum", typedef_flag=False)
          assert_widest(PT.c_int_type, cenum, PT.c_int_type)
  
subject: Add some basic tests for PyrexTypes.widest_numeric_type().