new_contents: import numba
  from numba import unittest_support as unittest
  from .support import TestCase
  from numba import compiler, typing, jitclass
  from numba.targets.registry import cpu_target
  
  
  @jitclass([('val', numba.types.List(numba.intp)),])
  class Dummy(object):
      def __init__(self, val):
          self.val = val
  
  
  class TestIrUtils(TestCase):
      """
      Tests ir handling utility functions like find_callname.
      """
  
      def test_obj_func_match(self):
          """Test matching of an object method (other than Array see #3449)
          """
  
          def test_func():
              d = Dummy([1])
              d.val.append(2)
          
          test_ir = compiler.run_frontend(test_func)
          typingctx = cpu_target.typing_context
          typemap, _, _ = compiler.type_inference_stage(
              typingctx, test_ir, (), None)
          matched_call = numba.ir_utils.find_callname(
              test_ir, test_ir.blocks[0].body[14].value, typemap)
          self.assertTrue(isinstance(matched_call, tuple)
              and len(matched_call) == 2 and matched_call[0] == 'append')
  
  
  if __name__ == "__main__":
      unittest.main()
  
subject: test find_callname obj method matching