code: def test_same_rouge(self):
      ref = "this is a string"
      self.assertDictClose(
          metrics.rouge([ref, ref], [ref, ref]),
          {"rouge1": 100, "rouge2": 100, "rougeLsum": 100},
      )
      self.assertDictClose(
          metrics.rouge_mean([ref, ref], [ref, ref]),
          {"rouge1": 100, "rouge2": 100, "rougeLsum": 100},
      )
  
imports: from unittest import mock
  from absl.testing import absltest
  import numpy
  import seqio
  import sklearn.metrics
  from t5.evaluation import metrics
  from t5.evaluation import test_utils
label_desc: Use image node_id 4 for calling the MetricsTest obj's underlying member method code with example usage: obj.test_same_rouge() without return types