code: def tearDown(self):
      original_samples = count_samples_in_file(self.source_file)
      written_samples = count_samples_in_directory(self.output_dir)
      total_files = count_files_in_directory(self.output_dir)
      assert_equal(
          n_slices,
          total_files,
          "number of slices created different from expected",
      )
      assert_equal(
          written_samples,
          original_samples,
          "number of samples written different from number of original samples",
      )
      shutil.rmtree(self.output_dir)
  
imports: from numpy.testing import TestCase, assert_equal
  from aubio import slice_source_at_stamps
  from utils import count_files_in_directory, get_default_test_sound
  from utils import count_samples_in_directory, count_samples_in_file
  import tempfile
  import shutil
label_desc: Use image node_id 7 for calling the aubio_slicing_test_case obj's underlying member method code with example usage: obj.tearDown() without return types