code: def test_stft(
      *,
      dtype_x_and_args,
      test_flags,
      backend_fw,
      fn_name,
      on_device,
  ):
      dtype, x, frame_length, frame_step = dtype_x_and_args
      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,
          signals=x[0],
          frame_length=frame_length,
          frame_step=frame_step,
          fft_length=None,
          window_fn=None,
          pad_end=True,
      )
  
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 41 for calling a global function with example usage: test_stft() without return types