code: def test_linspace_forward(start, stop, num, ctx, func_name):
      function_tester(
          None,
          F.linspace,
          ref_linspace,
          inputs=[],
          ctx=ctx,
          func_args=[start, stop, num],
          func_name=func_name,
          backward=[],
          disable_half_test=True,
      )
  
file_path: nnabla/python/test/function/test_linspace.py
imports: import pytest
  import numpy
  import nnabla.functions
  from nbla_test_utils import list_context, function_tester, half_test, force_tuple
  from nnabla.testing import assert_allclose
  import nnabla
  import nnabla.ext_utils
label_desc: Use image node_id 2 for calling a global function with example usage: test_linspace_forward(start, stop, num, ctx, func_name) without return types