code: def testEditDistanceZeroLengthHypothesis(self):
      hypothesis_indices = np.empty((0, 2), dtype=np.int64)
      hypothesis_values = []
      hypothesis_shape = [1, 0]
      truth_indices = [[0, 0]]
      truth_values = [0]
      truth_shape = [1, 1]
      expected_output = [1.0]
  
      self._testEditDistance(
          hypothesis=(
              hypothesis_indices,
              hypothesis_values,
              hypothesis_shape,
          ),
          truth=(truth_indices, truth_values, truth_shape),
          normalize=True,
          expected_output=expected_output,
      )
  
imports: import numpy
  from tensorflow.python.eager import def_function
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import errors
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import sparse_tensor
  from tensorflow.python.ops import array_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 7 for calling the EditDistanceTest obj's underlying member method code with example usage: obj.testEditDistanceZeroLengthHypothesis() without return types