class_docstr: Tests for the QuantumMonteCarlo template
class_docstr_tok: ["Tests","for","the","QuantumMonteCarlo","template"]
docstr: Test the flatten and unflatten methods.
docstr_tok: ["Test","the","flatten","and","unflatten","methods","."]
code: def test_flatten_unflatten(self):
      """Test the flatten and unflatten methods."""
      p = np.ones(4) / 4
      target_wires, estimation_wires = Wires(range(3)), Wires(
          range(3, 5)
      )
  
      op = QuantumMonteCarlo(
          p, self.func, target_wires, estimation_wires
      )
  
      data, metadata = op._flatten()
      assert data is op.data
      assert metadata[0] == op.wires
      assert dict(metadata[1]) == op.hyperparameters
  
      new_op = type(op)._unflatten(*op._flatten())
      assert qml.equal(op, new_op)
      assert op is not new_op
  
imports: import numpy
  import pytest
  from scipy.stats import norm
  import pennylane
  from pennylane.templates.subroutines.qmc import QuantumMonteCarlo, _make_V, _make_Z, func_to_unitary, make_Q, probs_to_unitary
  from pennylane.wires import Wires
label_desc: Use image node_id 2 for calling the TestQuantumMonteCarlo obj's underlying member method code with example usage: obj.test_flatten_unflatten() without return types