code: def test_bool_empty(self, dtype):
      with testing.assert_warns(DeprecationWarning):
          assert not bool(cupy.array((), dtype=dtype))
  
imports: import operator
  import unittest
  import numpy
  import pytest
  import cupy
  from cupy import testing
label_desc: Use image node_id 1 for calling the TestArrayBoolOp obj's underlying member method code with example usage: obj.test_bool_empty(dtype) without return types