code: def test_array_output(self, length):
      fsuffix = length
      f = getattr(
          self.module, self.fprefix + "_array_output_" + fsuffix
      )
  
      expected = np.array(
          [
              {"1": "a", "3": "abc", "star": "abcde" * 3}[length],
              {"1": "A", "3": "ABC", "star": "ABCDE" * 3}[length],
          ],
          dtype="S",
      )
  
      a = np.array([[c for c in s] for s in expected], dtype="u1")
      assert_array_equal(f(a), expected)
  
imports: import pytest
  import textwrap
  from numpy.testing import assert_array_equal, assert_equal, assert_raises
  import numpy
  from numpy.f2py.tests import util
label_desc: Use image node_id 4 for calling the TestCharacterString obj's underlying member method code with example usage: obj.test_array_output(length) without return types