class_docstr: Test the Hermitian observable
class_docstr_tok: ["Test","the","Hermitian","observable"]
docstr: Tests that the compute_diagonalizing_gates method of the
  Hermitian class returns the correct results.
docstr_tok: ["Tests","that","the","compute_diagonalizing_gates","method","of","the","Hermitian","class","returns","the","correct","results","."]
code: def test_hermitian_compute_diagonalizing_gates(self, tol):
      """Tests that the compute_diagonalizing_gates method of the
      Hermitian class returns the correct results."""
      eigvecs = np.array(
          [[0.38268343, -0.92387953], [-0.92387953, -0.38268343]]
      )
      res = qml.Hermitian.compute_diagonalizing_gates(
          eigvecs, wires=[0]
      )[0].data
      expected = eigvecs.conj().T
      assert np.allclose(res, expected, atol=tol, rtol=0)
  
imports: import functools
  import pickle
  import pytest
  import numpy
  from gate_data import I, X, Y, Z, H
  import pennylane
  from pennylane.ops.qubit.observables import BasisStateProjector, StateVectorProjector
label_desc: Use image node_id 9 for calling the TestHermitian obj's underlying member method code with example usage: obj.test_hermitian_compute_diagonalizing_gates(tol) without return types