code: def test_add(N, jitting, get_fields):
      a, b = get_fields
  
      # Testing add of fields
      _test_binary_operator(
          lambda x, y: x + y,
          a,
          b,
          jitting,
          a.domain.origin + 1,
          expected_value=[11.0 * len(N)],
      )
  
      # Testing add with scalar
      _test_binary_operator(
          lambda x, y: x + 1.0,
          a,
          b,
          jitting,
          a.domain.origin + 1,
          expected_value=[5.0 * len(N) + 1],
      )
  
imports: import numpy
  import pytest
  from jax import jit
  from jax import numpy
  from jax import random
  from jaxdf.discretization import Continuous
  from jaxdf.geometry import Domain
label_desc: Use image node_id 5 for calling a global function with example usage: test_add(N, jitting, get_fields) without return types