code: def raises_size_required(self):
      return pytest.raises(
          ValueError, match=r"^Loop size is undecided\."
      )
  
imports: import unittest
  import numpy
  import pytest
  import cupy
  from cupy import testing
  from cupy.cuda import runtime
  from cupy.cuda.texture import ChannelFormatDescriptor, CUDAarray, ResourceDescriptor, TextureDescriptor, TextureObject
label_desc: Use image node_id 3 for calling the TestElementwiseKernelSize obj's underlying member method code with example usage: obj.raises_size_required() and returns: pytest