class_docstr: Tests for simple single-qutrit observables
class_docstr_tok: ["Tests","for","simple","single-qutrit","observables"]
docstr: Test that the __repr__ method is correct
docstr_tok: ["Test","that","the","__repr__","method","is","correct"]
code: def test_repr(self, index):
      """Test that the __repr__ method is correct"""
  
      rep = f"GellMann{index}(wires=[0])"
      obs = qml.GellMann(wires=0, index=index)
  
      assert repr(obs) == rep
  
imports: import functools
  from unittest.mock import PropertyMock, patch
  import pytest
  import numpy
  from gate_data import GELL_MANN
  import pennylane
label_desc: Use image node_id 7 for calling the TestGellMann obj's underlying member method code with example usage: obj.test_repr(index) without return types