code: def test_astype_boolean_view(self, xp):
      # See #4354
      a = xp.array([0, 1, 2], dtype=numpy.int8).view(dtype=numpy.bool_)
      return a.astype(numpy.int8)
  
imports: import numpy
  import pytest
  import cupy
  from cupy import testing
  from cupy import _util
label_desc: Use image node_id 10 for calling the TestArrayAsType obj's underlying member method code with example usage: obj.test_astype_boolean_view(xp) and returns: a