code: def assertGVCF(
      self,
      gvcf,
      ref,
      gq,
      start,
      end,
      min_dp,
      chrom="chr1",
      gls=None,
      sample_name=None,
      gts=None,
      med_dp=None,
  ):
      if chrom:
          self.assertEqual(gvcf.reference_name, chrom)
      call = variant_utils.only_call(gvcf)
      self.assertNotEmpty(gvcf.reference_name)
      self.assertEqual(gvcf.reference_bases, ref)
      self.assertEqual(gvcf.alternate_bases, ["<*>"])
      self.assertEqual(gvcf.start, start)
      self.assertEqual(gvcf.end, end if end else start + 1)
      self.assertEqual(variantcall_utils.get_gq(call), gq)
      self.assertNotEmpty(call.genotype_likelihood)
      self.assertIn("MIN_DP", call.info)
      self.assertLen(call.info["MIN_DP"].values, 1)
      self.assertEqual(variantcall_utils.get_min_dp(call), min_dp)
      if med_dp is not None:
          self.assertIn("MED_DP", call.info)
          self.assertLen(call.info["MED_DP"].values, 1)
          self.assertEqual(variantcall_utils.get_med_dp(call), med_dp)
      else:
          self.assertNotIn("MED_DP", call.info)
      if gls is not None:
          npt.assert_allclose(
              list(gvcf.calls[0].genotype_likelihood), gls
          )
      if sample_name:
          self.assertEqual(gvcf.calls[0].call_set_name, sample_name)
      if gts is not None:
          self.assertEqual(list(gvcf.calls[0].genotype), gts)
  
imports: from unittest import mock
  from absl.testing import absltest
  from absl.testing import parameterized
  import numpy
  import numpy.testing
  from third_party.nucleus.util import variant_utils
  from third_party.nucleus.util import variantcall_utils
  from deepvariant import testdata
  from deepvariant import variant_caller
  from deepvariant.protos import deepvariant_pb2
label_desc: Use image node_id 8 for calling the VariantCallerTests obj's underlying member method code with example usage: obj.assertGVCF(gvcf, ref, gq, start, end, min_dp, chrom, gls, sample_name, gts, med_dp) without return types