.vimrc

" RSpec
map <Leader>r :call RunTest()<CR>
map <Leader>R :call RunNearestTest()<CR>

function! RunTest()
  call RunTestFile(FindTestFile())
endfunction

function! RunNearestTest()
  call RunTestFile(FindTestFile() . ':' . line('.'))
endfunction

function! FindTestFile()
  let current_file = expand("%")
  let spec_file = current_file

  if match(current_file, '_spec.rb$') == -1
    let spec_file = substitute(spec_file, '^app/', '', '')
    let spec_file = substitute(spec_file, '.rb$', '_spec.rb', '')

    let spec_file = 'spec/' . spec_file
  endif

  return spec_file
endfunction

function! RunTestFile(filename)
  write

  if filereadable('bin/rspec')
    exec ":!bin/rspec --format documentation " . a:filename
  else
    exec ":!bundle exec rspec --format documentation " . a:filename
  endif
endfunction