Auto-commit & run tests on every save

Guardfile

# More info at https://github.com/guard/guard#readme
ignore /^coverage\//

require 'tempfile'

notification :'terminal_notifier'

#notification :tmux,
#  :display_message => true,
#  :timeout => 5, # in seconds
#  :default_message_format => '%s >> %s',
#  # the first %s will show the title, the second the message
#  # Alternately you can also configure *success_message_format*,
#  # *pending_message_format*, *failed_message_format*
#  :line_separator => ' > ' # since we are single line we need a separator

guard 'minitest' do
  # with Minitest::Unit
  watch(/^test\/(.*)\/?(.*)_test\.rb/)
  watch(/^(lib\/.*)([^\/]+)\.rb/)      { |m| "test/#{m[1]}#{m[2]}_test.rb" }
  watch(/^test\/test_helper\.rb/)      { "test" }
end

# Add files and commands to this file, like the example:
#   watch(%r{file/path}) { `command(s)` }
#
guard 'shell' do
  watch(/(.*)/) do |m|
    if system("git ls-files --exclude-standard -d -o -m | egrep '.' > /dev/null")
      test_output = Tempfile.new('guard_commit_test_output')
      test_output.close
      tests_passing = system("rake 2>&1 >> #{test_output.path}")

      commit_message = Tempfile.new('guard_commit_message')
      commit_message.write("WIP: #{m[0]} (Tests: #{tests_passing ? 'passing' : 'failing'})\n\n")
      commit_message.write(File.read test_output.path)
      commit_message.close

      system('git add -A')
      system("git commit -F #{commit_message.path}")

      test_output.unlink
      commit_message.unlink
    end
  end
end