code: def test_view_casting(self):
      for xp, C in [(numpy, C_np), (cupy, C_cp)]:
          a = xp.arange(5, dtype="i").view("f")
          assert type(a) is xp.ndarray
          assert a.dtype == xp.float32
  
          a = xp.arange(5, dtype="i").view(dtype="f")
          assert type(a) is xp.ndarray
          assert a.dtype == xp.float32
  
          with pytest.raises(TypeError):
              xp.arange(5, dtype="i").view("f", dtype="f")
  
          a = xp.arange(5, dtype="i").view(C)
          assert type(a) is C
          assert a.dtype == xp.int32
          assert a.info is None
  
          a = xp.arange(5, dtype="i").view(type=C)
          assert type(a) is C
          assert a.dtype == xp.int32
          assert a.info is None
  
          # When an instance of ndarray's subclass is supplied to `dtype`,
          # view() interprets it as if it is supplied to `type`
          a = xp.arange(5, dtype="i").view(dtype=C)
          assert type(a) is C
          assert a.dtype == xp.int32
          assert a.info is None
  
          with pytest.raises(TypeError):
              xp.arange(5).view("f", C, type=C)
  
      with pytest.raises(ValueError):
          cupy.arange(5).view(type=numpy.ndarray)
  
imports: import numpy
  import pytest
  import cupy
  from cupy import testing
  from cupy import _util
label_desc: Use image node_id 1 for calling the TestSubclassArrayView obj's underlying member method code with example usage: obj.test_view_casting() without return types