code: def test_char_arr(self):
      for out in (
          self.module.string_test.strarr,
          self.module.string_test.strarr77,
      ):
          expected = (5, 7)
          assert out.shape == expected
          expected = "|S12"
          assert out.dtype == 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 2 for calling the TestStringScalarArr obj's underlying member method code with example usage: obj.test_char_arr() without return types