code: def test_add_scalar_forward_backward(seed, val, ctx, func_name):
      from nbla_test_utils import function_tester
  
      rng = np.random.RandomState(seed)
      inputs = [rng.randn(2, 3, 4).astype(np.float32) * 2]
      function_tester(
          rng,
          F.add_scalar,
          lambda x, y: x + y,
          inputs,
          func_args=[val],
          ctx=ctx,
          func_name=func_name,
      )
  
file_path: nnabla/python/test/function/test_add_scalar.py
imports: import pytest
  import numpy
  import nnabla.functions
  import nnabla
  from nbla_test_utils import list_context
label_desc: Use image node_id 1 for calling a global function with example usage: test_add_scalar_forward_backward(seed, val, ctx, func_name) without return types