class_docstr: Pytree related checks.
class_docstr_tok: ["Pytree","related","checks","."]
docstr: Assert that an unpacking and repacking a pytree reproduces the original operation.
docstr_tok: ["Assert","that","an","unpacking","and","repacking","a","pytree","reproduces","the","original","operation","."]
code: def test_badpytree_incomplete_info(self):
      """Assert that an unpacking and repacking a pytree reproduces the original operation."""
  
      class BadPytree(Operator):
          def _flatten(self):
              return tuple(), (self.wires, tuple())
  
          def __init__(self, wires, val="a"):
              super().__init__(wires)
              self.hyperparameters["val"] = val
  
      op = BadPytree(wires=0, val="b")
      with pytest.raises(
          AssertionError,
          match=r"metadata and data must be able to reproduce the original operation",
      ):
          assert_valid(op, skip_pickle=True)
  
imports: import pytest
  import numpy
  import pennylane
  from pennylane.operation import Operator
  from pennylane.ops.functions import assert_valid
label_desc: Use image node_id 3 for calling the TestPytree obj's underlying member method code with example usage: obj.test_badpytree_incomplete_info() and returns: tuple,  self,  tuple