code: def testBasic(self):
      data = [1, 2, 3, 4, 5]
      target = 12
      ds = dataset_ops.Dataset.from_tensor_slices({"a": data})
      ds = ds.apply(pad_to_cardinality(target))
      expected_data = [
          {"a": data[i], "valid": True} for i in range(len(data))
      ]
      expected_padding = [
          {"a": 0, "valid": False} for _ in range(target - len(data))
      ]
      self.assertAllEqual(
          self.getDatasetOutput(ds), expected_data + expected_padding
      )
  
file_path: tensorflow/tensorflow/python/data/experimental/kernel_tests/pad_to_cardinality_test.py
imports: from absl.testing import parameterized
  from tensorflow.python.data.experimental.ops import pad_to_cardinality
  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.platform import test
label_desc: Use image node_id 1 for calling the PadToCardinalityTest obj's underlying member method code with example usage: obj.testBasic() without return types