class_docstr: Tests for the counts function
docstr: Test that a UserWarning is raised if the provided
  argument might not be hermitian.
docstr_tok: ["Test","that","a","UserWarning","is","raised","if","the","provided","argument","might","not","be","hermitian","."]
code: def test_observable_might_not_be_hermitian(self):
      """Test that a UserWarning is raised if the provided
      argument might not be hermitian."""
  
      with pytest.warns(
          UserWarning, match="Prod might not be hermitian."
      ):
          qml.counts(qml.prod(qml.PauliX(0), qml.PauliZ(0)))
  
imports: import copy
  import numpy
  import pytest
  import pennylane
  from pennylane.measurements import AllCounts, Counts, CountsMP
  from pennylane.wires import Wires
label_desc: Use image node_id 5 for calling the TestCounts obj's underlying member method code with example usage: obj.test_observable_might_not_be_hermitian() without return types