Execute (Clean up test environment):
  Save maplocalleader

  let maplocalleader = '\'

  function! ReplaceCurrentDates(expected)
    if a:expected != ''
      execute "silent! %substitute/" . a:expected . "/**EXPECTED**/"
    endif
    execute "silent! %substitute/" . strftime("%Y-%m-%d") . "/**TODAY**/"
    for b:unit in ['D', 'W', 'M', 'Y']
       let [s:year, s:month, s:day] = todo#ParseDate(strftime("%Y-%m-%d"))
       let [s:year, s:month, s:day] = todo#DateAdd(s:year, s:month, s:day, 2, b:unit)
       let s:duedate = printf('%04d', s:year) . '-' . printf('%02d', s:month) . '-' . printf('%02d', s:day)
       execute "silent! %substitute/" . s:duedate . "/**TODAY+2" . b:unit . "**/"
    endfor
  endfunction
  let g:Todo_fold_char='x'

Before:
After:
Given: