docstr: Test when the rank is unknown.
docstr_tok: ["Test","when","the","rank","is","unknown","."]
code: def testStructuredTensorArrayLikeNoRank(self):
      """Test when the rank is unknown."""
  
      @def_function.function
      def my_fun(foo):
          bar_shape = math_ops.range(foo)
          bar = array_ops.zeros(shape=bar_shape)
          structured_array_ops._structured_tensor_like(bar)
  
      with self.assertRaisesRegex(
          ValueError, "Can't build StructuredTensor w/ unknown rank"
      ):
          my_fun(array_ops.constant(3))
  
imports: from absl.testing import parameterized
  from tensorflow.python.eager import def_function
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import random_seed
  from tensorflow.python.framework import tensor
  from tensorflow.python.framework import tensor_shape
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops import random_ops
  from tensorflow.python.ops.ragged import ragged_factory_ops
  from tensorflow.python.ops.ragged import ragged_tensor
  from tensorflow.python.ops.ragged import row_partition
  from tensorflow.python.ops.ragged.dynamic_ragged_shape import DynamicRaggedShape
  from tensorflow.python.ops.structured import structured_array_ops
  from tensorflow.python.ops.structured import structured_tensor
  from tensorflow.python.ops.structured.structured_tensor import StructuredTensor
  from tensorflow.python.platform import googletest
  from tensorflow.python.util import nest
label_desc: Use image node_id 28 for calling the StructuredArrayOpsTest obj's underlying member method code with example usage: obj.testStructuredTensorArrayLikeNoRank() without return types