class_docstr: Tests for the finite_diff_coeffs function
class_docstr_tok: ["Tests","for","the","finite_diff_coeffs","function"]
docstr: Test that the correct forward order 1 method is returned
code: def test_correct_forward_order1(self):
      """Test that the correct forward order 1 method is returned"""
      coeffs, shifts = finite_diff_coeffs(1, 1, "forward")
      assert np.allclose(coeffs, [-1, 1])
      assert np.allclose(shifts, [0, 1])
  
imports: import numpy
  import pytest
  import pennylane
  from pennylane import numpy
  from pennylane.devices import DefaultQubitLegacy
  from pennylane.gradients import finite_diff, finite_diff_coeffs
  from pennylane.operation import AnyWires, Observable
label_desc: Use image node_id 4 for calling the TestCoeffs obj's underlying member method code with example usage: obj.test_correct_forward_order1() without return types