Guardfile

directories %w[app config lib spec frontend/app]

# This group allows to skip running RuboCop when RSpec failed.
# https://github.com/yujinakayama/guard-rubocop

group :red_green_refactor, halt_on_fail: true do
  guard :rspec, cmd: "spring rspec" do
    require "guard/rspec/dsl"
    dsl = Guard::RSpec::Dsl.new(self)

    # Feel free to open issues for suggestions and improvements

    # RSpec files
    rspec = dsl.rspec
    watch(rspec.spec_helper) { rspec.spec_dir }
    watch(rspec.spec_support) { rspec.spec_dir }
    watch(rspec.spec_files)

    # Ruby files
    ruby = dsl.ruby
    dsl.watch_spec_files_for(ruby.lib_files)

    # Rails files
    rails = dsl.rails(view_extensions: %w(erb haml slim))
    dsl.watch_spec_files_for(rails.app_files)
    dsl.watch_spec_files_for(rails.views)

    watch(rails.controllers) do |m|
      [
        rspec.spec.("routing/#{m[1]}_routing"),
        rspec.spec.("controllers/#{m[1]}_controller"),
        rspec.spec.("acceptance/#{m[1]}")
      ]
    end

    # Rails config changes
    watch(rails.spec_helper)     { rspec.spec_dir }
    watch(rails.routes)          { "#{rspec.spec_dir}/routing" }
    watch(rails.app_controller)  { "#{rspec.spec_dir}/controllers" }

    # Capybara features specs
    watch(rails.view_dirs)     { |m| rspec.spec.("features/#{m[1]}") }
    watch(rails.layouts)       { |m| rspec.spec.("features/#{m[1]}") }

    # Turnip features and steps
    watch(%r{^spec/acceptance/(.+)\.feature$})
    watch(%r{^spec/acceptance/steps/(.+)_steps\.rb$}) do |m|
      Dir[File.join("**/#{m[1]}.feature")][0] || "spec/acceptance"
    end
  end

  guard :rubocop, all_on_start: false do
    watch(%r{.+\.rb$})
    watch(%r{(?:.+/)?\.rubocop\.yml$}) { |m| File.dirname(m[0]) }
  end
end

guard 'livereload' do
  watch %r{frontend/app/\w+/.+\.(js|hbs|html|css|)}
end

Guardfile is localized in the project root(guard gem whith rubocop gem) this setup allow us to first run the test and is if there were no errors then it runs to mark all violated cops