code: def test_2d_array_inout(self, dtype):
      f = getattr(self.module, self.fprefix + "_2d_array_inout")
      n = np.array(
          [["A", "B", "C"], ["D", "E", "F"]], dtype=dtype, order="F"
      )
      a = np.array(
          [["a", "b", "c"], ["d", "e", "f"]], dtype=dtype, order="F"
      )
      f(a, n)
      assert_array_equal(a, n)
  
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 12 for calling the TestCharacter obj's underlying member method code with example usage: obj.test_2d_array_inout(dtype) without return types