code: def test_fnames_presuffix():
      fnames = ["foo.nii", "bar.nii"]
      pths = fnames_presuffix(fnames, "pre_", "_post", "/tmp")
      assert pths == ["/tmp/pre_foo_post.nii", "/tmp/pre_bar_post.nii"]
  
imports: import os
  import time
  from pathlib import Path
  from unittest import mock, SkipTest
  import pytest
  from ...testing import TempFATFS
  from ...utils.filemanip import save_json, load_json, fname_presuffix, fnames_presuffix, hash_rename, check_forhash, _parse_mount_table, _cifs_table, on_cifs, copyfile, copyfiles, ensure_list, simplify_list, check_depends, split_filename, get_related_files, indirectory, loadpkl, loadcrash, savepkl, path_resolve, write_rst_list, emptydirs
label_desc: Use image node_id 4 for calling a global function with example usage: test_fnames_presuffix() without return types