code: def test_array_repr_default_backprop_id():
      array = chainerx.array([3.0], chainerx.float32)
      array.require_grad()
      assert (
          "array([3.], shape=(1,), dtype=float32, device='native:0', "
          "backprop_ids=['<default>'])" == str(array)
      )
  
imports: import copy
  import math
  import pickle
  import numpy
  import pytest
  import chainerx
  import chainerx.testing
  from chainerx_tests import array_utils
label_desc: Use image node_id 17 for calling a global function with example usage: test_array_repr_default_backprop_id() without return types