Running tests in tmux from Atom

init.coffee

# Atom -> Init Script...

child = require "child_process"

runTestInTmux = (focus) ->
  editor = atom.workspace.getActiveTextEditor()
  editor.save()

  fullPath = editor.getPath()
  projectPath = atom.project.getDirectories()[0].getPath() + "/"
  relativePath = fullPath.split(projectPath)[1]

  if focus
    line = editor.getLastCursor().getBufferPosition().row
    relativePath =  relativePath + ":" + line

  child.spawnSync("tmux", ["send-keys", "-l", "script/test " + relativePath + "\n"])

atom.commands.add "atom-text-editor", "custom:save-and-run-test-at-current-line", ->
  runTestInTmux(true)

atom.commands.add "atom-text-editor", "custom:save-and-run-test", ->
  runTestInTmux(false)

keymap.cson

# Atom -> Keymap...

'atom-text-editor.vim-mode-plus:not(.insert-mode)':
  'm': 'custom:save-and-run-test-at-current-line'
  'M': 'custom:save-and-run-test'