class_docstr: Tests the pauli_decompose function
docstr: Tests that an exception is raised if the Hamiltonian does not have
  the correct shape
docstr_tok: ["Tests","that","an","exception","is","raised","if","the","Hamiltonian","does","not","have","the","correct","shape"]
code: def test_wrong_shape(self, hamiltonian):
      """Tests that an exception is raised if the Hamiltonian does not have
      the correct shape"""
      with pytest.raises(
          ValueError,
          match="The matrix should have shape",
      ):
          qml.pauli_decompose(hamiltonian)
  
imports: import pytest
  import numpy
  import pennylane
  from pennylane.operation import Tensor
  from pennylane.ops import Identity, PauliX, PauliY, PauliZ
  from pennylane.pauli import pauli_sentence, PauliWord, PauliSentence
  from pennylane.pauli.conversion import _generalized_pauli_decompose
label_desc: Use image node_id 1 for calling the TestDecomposition obj's underlying member method code with example usage: obj.test_wrong_shape(hamiltonian) without return types