code: def testCardinality(self):
      cluster = data_service_test_base.TestCluster(num_workers=1)
      ds = self.make_distributed_dataset(
          dataset_ops.Dataset.range(10).repeat(),
          cluster,
          job_name="test",
          consumer_index=0,
          num_consumers=2,
      )
      self.assertEqual(
          self.evaluate(ds.cardinality()), dataset_ops.INFINITE
      )
  
file_path: tensorflow/tensorflow/python/data/experimental/kernel_tests/service/coordinated_read_test.py
imports: from absl.testing import parameterized
  from tensorflow.python.data.experimental.kernel_tests.service import test_base
  from tensorflow.python.data.experimental.ops import grouping
  from tensorflow.python.data.kernel_tests import test_base
  from tensorflow.python.data.ops import dataset_ops
  from tensorflow.python.framework import combinations
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors
  from tensorflow.python.ops import math_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 6 for calling the CoordinatedReadTest obj's underlying member method code with example usage: obj.testCardinality() without return types