class_docstr: Test the dunder methods.
docstr: Test the string representation of a program.
docstr_tok: ["Test","the","string","representation","of","a","program","."]
code: def test_repr_program(self):
      """Test the string representation of a program."""
      transform_program = TransformProgram()
  
      transform1 = TransformContainer(transform=first_valid_transform)
      transform2 = TransformContainer(transform=second_valid_transform)
  
      transform_program.push_back(transform1)
      transform_program.push_back(transform2)
  
      str_program = repr(transform_program)
      assert (
          str_program
          == "TransformProgram("
          + str(first_valid_transform.__name__)
          + ", "
          + str(second_valid_transform.__name__)
          + ")"
      )
  
imports: from typing import Sequence, Callable
  import pytest
  import pennylane
  from pennylane.tape import QuantumScript
  from pennylane.transforms.core import transform, TransformProgram, TransformError, TransformContainer
  from pennylane.transforms.core.transform_program import _batch_postprocessing, _apply_postprocessing_stack, null_postprocessing
  from pennylane.typing import ResultBatch, Result
label_desc: Use image node_id 7 for calling the TestTransformProgramDunders obj's underlying member method code with example usage: obj.test_repr_program() without return types