class_docstr: Unittests for the dot function when ``pauli=False``.
docstr: Test that a ValueError is raised when the number of coefficients and operators does
  not match.
docstr_tok: ["Test","that","a","ValueError","is","raised","when","the","number","of","coefficients","and","operators","does","not","match","."]
code: def test_dot_empty_coeffs_or_ops(self):
      """Test that a ValueError is raised when the number of coefficients and operators does
      not match."""
      with pytest.raises(
          ValueError,
          match="Cannot compute the dot product of an empty sequence",
      ):
          qml.dot([], [])
  
imports: import pytest
  import pennylane
  from pennylane.ops import Hamiltonian, Prod, SProd, Sum
  from pennylane.pauli.pauli_arithmetic import PauliSentence
label_desc: Use image node_id 7 for calling the TestDotSum obj's underlying member method code with example usage: obj.test_dot_empty_coeffs_or_ops() without return types