code: def test_strings2arrays():
      strings = ["hello", "world"]
      model = strings2arrays()
      Y, backprop = model.begin_update(strings)
      assert len(Y) == len(strings)
      assert backprop([]) == []
  
file_path: thinc/thinc/tests/layers/test_transforms.py
imports: import numpy
  import pytest
  from thinc.api import NumpyOps, Ragged, registry, strings2arrays
  from ..util import get_data_checker
label_desc: Use image node_id 13 for calling a global function with example usage: test_strings2arrays() without return types