code: def test_rfftn(
      *,
      d_x_d_s_n,
      test_flags,
      backend_fw,
      fn_name,
      on_device,
  ):
      dtype, x, s, axes, norm = d_x_d_s_n
      helpers.test_function(
          input_dtypes=dtype,
          test_flags=test_flags,
          backend_to_test=backend_fw,
          on_device=on_device,
          fn_name=fn_name,
          rtol_=1e-2,
          atol_=1e-2,
          x=x,
          s=s,
          axes=axes,
          norm=norm,
      )
  
imports: import numpy
  import torch
  from hypothesis import strategies, assume
  import ivy
  import ivy_tests.test_ivy.helpers
  from ivy_tests.test_ivy.helpers import handle_test, BackendHandler
label_desc: Use image node_id 38 for calling a global function with example usage: test_rfftn() without return types