docstr: Tests error is raised when complement_dict does not cover given seq.
docstr_tok: ["Tests","error","is","raised","when","complement_dict","does","not","cover","given","seq","."]
code: def test_bad_reverse_complement(self, seq, complement_dict=None):
      """Tests error is raised when complement_dict does not cover given seq."""
      with self.assertRaisesRegexp(
          sequence_utils.Error, "Unknown base in"
      ):
          sequence_utils.reverse_complement(seq, complement_dict)
  
file_path: deepvariant/third_party/nucleus/util/sequence_utils_test.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from absl.testing import absltest
  from absl.testing import parameterized
  from third_party.nucleus.util import sequence_utils
label_desc: Use image node_id 2 for calling the SequenceUtilsTests obj's underlying member method code with example usage: obj.test_bad_reverse_complement(seq, complement_dict) without return types