code: def test_all_match(self):
      self.assertDictEqual(
          metrics.all_match([0, 1], [0, 1]), {"exact_match": 100.0}
      )
      self.assertDictEqual(
          metrics.all_match([0, 1], [0, 2]), {"exact_match": 0.0}
      )
  
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 16 for calling the MetricsTest obj's underlying member method code with example usage: obj.test_all_match() without return types