code: def test_format_cigar_units(self, cigar_units, expected):
      self.assertEqual(cigar.format_cigar_units(cigar_units), expected)
  
file_path: deepvariant/third_party/nucleus/util/cigar_test.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import itertools
  from absl.testing import absltest
  from absl.testing import parameterized
  from third_party.nucleus.protos import cigar_pb2
  from third_party.nucleus.util import cigar
label_desc: Use image node_id 1 for calling the CigarTests obj's underlying member method code with example usage: obj.test_format_cigar_units(cigar_units, expected) without return types