Script for testing inotify and listen on Linux

test_inotify.rb

gem "rb-inotify"
require 'rb-inotify'

gem "listen"
require "listen"

# BEGIN MONKEY PATCH OF LISTEN GEM
Listen::Adapter::Linux::DEFAULTS.tap do |defaults|
  # Add :modify to the inotify events monitored by the Linux adapter
  new_defaults = defaults.merge(events: defaults[:events] + [:modify])
  Listen::Adapter::Linux.const_set(:DEFAULTS, new_defaults.freeze)
end
# END MONKEY PATCH OF LISTEN GEM

dir = '.'

Listen.to(dir) do |modified, added, removed|
  puts "listen: #{[added, modified, removed].inspect}!"
end.start

events = [:recursive, :attrib, :create, :delete, :move, :close_write]

# Add :modify to the inotify events -- this is what we were missing!
events += [:modify]

INotify::Notifier.new.tap do |notifier|
  notifier.watch(dir, *events) do |event|
    puts "rb-inotify event: #{event.name} #{event.flags.inspect}"
  end
  notifier.run
end