code: def setUp(self):
      self.source_file = get_default_test_sound(self)
      self.output_dir = tempfile.mkdtemp(
          suffix="aubio_slicing_test_case"
      )
  
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 1 for calling the aubio_slicing_with_ends_test_case obj's underlying member method code with example usage: obj.setUp() without return types