code: def test_arange_forward(start, stop, step, ctx, func_name):
      function_tester(
          None,
          F.arange,
          ref_arange,
          inputs=[],
          ctx=ctx,
          func_args=[start, stop, step],
          func_name=func_name,
          backward=[],
      )
  
imports: import pytest
  import numpy
  import nnabla.functions
  from nbla_test_utils import list_context, function_tester
label_desc: Use image node_id 2 for calling a global function with example usage: test_arange_forward(start, stop, step, ctx, func_name) without return types