class_docstr: Tests for GffWriter.
class_docstr_tok: ["Tests","for","GffWriter","."]
code: def setUp(self):
      tfrecord_file = test_utils.genomics_core_testdata(
          "test_features.gff.tfrecord"
      )
      self.records = list(
          tfrecord.read_tfrecords(
              tfrecord_file, proto=gff_pb2.GffRecord
          )
      )
      self.header = gff_pb2.GffHeader(
          sequence_regions=[ranges.make_range("ctg123", 0, 1497228)]
      )
  
file_path: deepvariant/third_party/nucleus/io/gff_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.io import gff
  from third_party.nucleus.io import tfrecord
  from third_party.nucleus.protos import gff_pb2
  from third_party.nucleus.testing import test_utils
  from third_party.nucleus.util import ranges
label_desc: Use image node_id 1 for calling the GffWriterTests obj's underlying member method code with example usage: obj.setUp() without return types