Run specs from vim in another tmux pane.

tmux-test-runner.vim

map <silent> <Leader>rl :w<cr>:silent call RunCurrentLineInTest('!ts bundle exec rspec')<cr>:silent redraw!<cr>
map <silent> <Leader>rt :w<cr>:silent call RunCurrentTest('!ts bundle exec rspec')<cr>:silent redraw!<cr>

" Test runner helpers
function! RunCurrentTest(rspec_type)
  let in_test_file = match(expand("%"), '\(.feature\|_spec.rb\|_test.rb\)$') != -1
  if in_test_file
    call SetTestFile()

    if match(expand('%'), '\.feature$') != -1
      call SetTestRunner("!bin/cucumber")
      exec g:my_test_runner g:my_test_file
    elseif match(expand('%'), '_spec\.rb$') != -1
      call SetTestRunner(a:rspec_type)
      exec g:my_test_runner g:my_test_file
    else
      call SetTestRunner(a:rspec_type)
      exec g:my_test_runner g:my_test_file
    endif
  else
    exec g:my_test_runner g:my_test_file
  endif
endfunction

function! SetTestRunner(runner)
  let g:my_test_runner=a:runner
endfunction

function! RunCurrentLineInTest(rspec_type)
  let in_test_file = match(expand("%"), '\(.feature\|_spec.rb\|_test.rb\)$') != -1
  if in_test_file
    call SetTestFileWithLine()
  end

  exec a:rspec_type g:my_test_file . ":" . g:my_test_file_line
endfunction

function! SetTestFile()
  let g:my_test_file=@%
endfunction

function! SetTestFileWithLine()
  let g:my_test_file=@%
  let g:my_test_file_line=line(".")
endfunction

ts.sh

#!/usr/bin/env bash
# Usage: ts bundle exec rspec
#
# Sends a command to a tmux pane

args=$@
tmux send-keys -t bottom-right "$args" C-m