code: def test_total_size(expected, shape):
      assert expected == array_utils.total_size(shape)
  
file_path: chainer/tests/chainerx_tests/test_array_utils.py
imports: import numpy
  import pytest
  import chainerx
  from chainerx_tests import array_utils
label_desc: Use image node_id 1 for calling a global function with example usage: test_total_size(expected, shape) without return types