code: def test_token_to_char_no_spaces():
      expected_m = np.array(
          # T  h  i  s  i  s  a  t  e  s  t
          [[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]],  # Thisisatest
          dtype=np.int32,
      )
      m = token_to_char("Thisisatest")
      assert (m == expected_m).all()
  
imports: import numpy
  import pytest
  from jiant.utils.retokenize import TokenAligner, token_to_char
label_desc: Use image node_id 2 for calling a global function with example usage: test_token_to_char_no_spaces() without return types