code: def test_TimeRangeDecorator(self):
      push_patch = mock.patch("cupy.cuda.nvtx.RangePush")
      pop_patch = mock.patch("cupy.cuda.nvtx.RangePop")
      with push_patch as push, pop_patch as pop:
  
          @prof.TimeRangeDecorator()
          def f():
              pass
  
          f()
          # Default value of color id is -1
          push.assert_called_once_with("f", -1)
          pop.assert_called_once_with()
  
file_path: cupy/tests/cupy_tests/prof_tests/test_range.py
imports: import unittest
  from unittest import mock
  from cupy import cuda
  from cupy import prof
label_desc: Use image node_id 4 for calling the TestTimeRange obj's underlying member method code with example usage: obj.test_TimeRangeDecorator() without return types