You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: vl_test_init.m
    path of file: ./repos/2016_person_re-ID/vlfeat/toolbox/xtest
    
    the code of the file until where you have to start completion: % VL_TEST_INIT  Intialize unit test file
%   This is a VLFeat internal function used to initialize an .m file
%   containing a unit test.
%
%   See also: VL_TEST(), VL_HELP().

% Author:: Andrea Vedaldi

% Copyright (C) 2007-12 Andrea Vedaldi and Brian Fulkerson.
% Copyright (C) 2013 Andrea Vedaldi.
% All rights reserved.
%
% This file is part of the VLFeat library and is made available under
% the terms of the BSD license (see the COPYING file).

% Obtain the path to the m-file that called VL_TEST_INIT()
stack 
    
function used to initialize an .m file
%   containing a unit test.
%
%   See also: VL_TEST(), VL_HELP().

% Author:: Andrea Vedaldi

% Copyright (C) 2007-12 Andrea Vedaldi and Brian Fulkerson.
% Copyright (C) 2013 Andrea Vedaldi.
% All rights reserved.
%
% This file is part of the VLFeat library and is made available under
% the terms of the BSD license (see the COPYING file).

% Obtain the path to the m-file that called VL_TEST_INIT()
stack = dbstack(1) ;
mfilePath = stack(1).file ;
mfileName = stack(1).name ;
fid = fopen(mfilePath, 'r') ;

% Parse the source code of the caller to get the names of its
% subfunctions. One could use which('-subfun', stack(1).name) here,
% but this feature is undocumented.

setupFunc = [] ;
teardownFunc = [] ;

tests = {} ;
l = 0 ;
t = 0 ;
while 1
  tline = fgetl(fid) ;
  l = l + 1 ;
  if ~ischar(tline), break ; end