class_docstr: Tests for the functions involved in obtaining post-rotations necessary in the measurement
  optimization schemes implemented in :mod:`grouping`.
class_docstr_tok: ["Tests","for","the","functions","involved","in","obtaining","post-rotations","necessary","in","the","measurement","optimization","schemes","implemented","in",":","mod",":","`","grouping","`","."]
docstr: Tests `diagonalize_pauli_word` returns the correct diagonal Pauli word in computational
  basis for a given Pauli word.
docstr_tok: ["Tests","`","diagonalize_pauli_word","`","returns","the","correct","diagonal","Pauli","word","in","computational","basis","for","a","given","Pauli","word","."]
code: def test_diagonalize_pauli_word(self, pauli_word, diag_pauli_word):
      """Tests `diagonalize_pauli_word` returns the correct diagonal Pauli word in computational
      basis for a given Pauli word."""
  
      assert are_identical_pauli_words(
          diagonalize_pauli_word(pauli_word), diag_pauli_word
      )
  
file_path: pennylane/tests/test_measurement_transformations.py
imports: import pytest
  import numpy
  from pennylane import PauliX, PauliY, PauliZ, Identity, Hadamard, Hermitian, RX, RY, U3
  from pennylane.pauli import are_identical_pauli_words, qwc_rotation, diagonalize_pauli_word, diagonalize_qwc_pauli_words
label_desc: Use image node_id 4 for calling the TestMeasurementTransformations obj's underlying member method code with example usage: obj.test_diagonalize_pauli_word(pauli_word, diag_pauli_word) without return types