class_docstr: Unittests for the dot function when ``pauli=False``.
docstr: Test that the `dot` function groups the coefficients.
docstr_tok: ["Test","that","the","`","dot","`","function","groups","the","coefficients","."]
code: def test_dot_groups_coeffs(self):
      """Test that the `dot` function groups the coefficients."""
      result = qml.dot(
          coeffs=[4, 4, 4],
          ops=[qml.PauliX(0), qml.PauliX(1), qml.PauliX(2)],
      )
      assert isinstance(result, SProd)
      assert result.scalar == 4
      assert isinstance(result.base, Sum)
      assert len(result.base) == 3
      for op in result.base:
          assert isinstance(op, qml.PauliX)
  
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 4 for calling the TestDotSum obj's underlying member method code with example usage: obj.test_dot_groups_coeffs() without return types