code: def test_idct(
      dtype_x_and_args, test_flags, backend_fw, fn_name, on_device
  ):
      input_dtype, x, type, n, axis, norm = dtype_x_and_args
      helpers.test_function(
          input_dtypes=input_dtype,
          test_flags=test_flags,
          backend_to_test=backend_fw,
          fn_name=fn_name,
          x=x[0],
          type=type,
          n=n,
          axis=axis,
          norm=norm,
          rtol_=1e-3,
          atol_=1e-1,
          on_device=on_device,
      )
  
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 28 for calling a global function with example usage: test_idct(dtype_x_and_args, test_flags, backend_fw, fn_name, on_device) without return types