code: def test_item(self):
      for xp in (numpy, cupy):
          a = testing.shaped_arange(self.shape, xp, xp.float32)
          with pytest.raises(ValueError):
              a.item()
  
file_path: cupy/tests/cupy_tests/core_tests/test_ndarray_conversion.py
imports: import unittest
  import numpy
  import pytest
  import cupy
  from cupy.cuda import runtime
  from cupy import testing
label_desc: Use image node_id 1 for calling the TestNdarrayItemRaise obj's underlying member method code with example usage: obj.test_item() without return types