diff --git a/.rubocop.yml b/.rubocop.yml
new file mode 100644
index 0000000..7bf3d5c
--- /dev/null
+++ b/.rubocop.yml
@@ -0,0 +1,17 @@
+AllCops:
+  Exclude:
+    - bin/**/*
+    - db/**/*
+    - spec/**/**/**/*
+    - vendor/**/*
+  NewCops: enable
+  SuggestExtensions: false
+
+Style/Documentation:
+  Enabled: false
+
+Metrics/MethodLength:
+  Max: 20
+
+Metrics/AbcSize:
+  Max: 20
\ No newline at end of file
diff --git a/Gemfile b/Gemfile
index e58cffc..29edf32 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,19 +1,24 @@
-source "https://rubygems.org"
+# frozen_string_literal: true
+
+source 'https://rubygems.org'
 git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
-ruby "3.2.1"
+ruby '3.2.1'
 
-gem "rails", "~> 7.0.4", ">= 7.0.4.2"
-gem "mysql2", "~> 0.5"
-gem "puma", "~> 5.0"
-gem "tzinfo-data", platforms: %i[ mingw mswin x64_mingw jruby ]
-gem "bootsnap", require: false
+gem 'bootsnap', require: false
+gem 'flatten'
+gem 'mysql2', '~> 0.5'
+gem 'puma', '~> 5.0'
+gem 'rails', '~> 7.0.4', '>= 7.0.4.2'
+gem 'tzinfo-data', platforms: %i[mingw mswin x64_mingw jruby]
 
 group :development, :test do
-  gem "debug", platforms: %i[ mri mingw x64_mingw ]
-  gem "rspec-rails"
+  gem 'debug', platforms: %i[mri mingw x64_mingw]
+  gem 'pry-rails'
+  gem 'rspec-rails'
+  gem 'shoulda-matchers'
 end
 
 group :development do
-  gem 'pry'
+  gem 'rubocop', require: false
 end
diff --git a/Gemfile.lock b/Gemfile.lock
index 6d1f2f6..2a45022 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -66,6 +66,7 @@ GEM
       i18n (>= 1.6, < 2)
       minitest (>= 5.1)
       tzinfo (~> 2.0)
+    ast (2.4.2)
     bootsnap (1.16.0)
       msgpack (~> 1.2)
     builder (3.2.4)
@@ -76,10 +77,12 @@ GEM
     debug (1.7.1)
     diff-lcs (1.5.0)
     erubi (1.12.0)
+    flatten (0.2.0)
     globalid (1.1.0)
       activesupport (>= 5.0)
     i18n (1.12.0)
       concurrent-ruby (~> 1.0)
+    json (2.6.3)
     loofah (2.19.1)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
@@ -106,9 +109,14 @@ GEM
     nio4r (2.5.8)
     nokogiri (1.14.2-x86_64-darwin)
       racc (~> 1.4)
+    parallel (1.22.1)
+    parser (3.2.1.0)
+      ast (~> 2.4.1)
     pry (0.14.2)
       coderay (~> 1.1)
       method_source (~> 1.0)
+    pry-rails (0.3.9)
+      pry (>= 0.10.4)
     puma (5.6.5)
       nio4r (~> 2.0)
     racc (1.6.2)
@@ -141,7 +149,10 @@ GEM
       rake (>= 12.2)
       thor (~> 1.0)
       zeitwerk (~> 2.5)
+    rainbow (3.1.1)
     rake (13.0.6)
+    regexp_parser (2.7.0)
+    rexml (3.2.5)
     rspec-core (3.12.1)
       rspec-support (~> 3.12.0)
     rspec-expectations (3.12.2)
@@ -159,10 +170,26 @@ GEM
       rspec-mocks (~> 3.11)
       rspec-support (~> 3.11)
     rspec-support (3.12.0)
+    rubocop (1.45.1)
+      json (~> 2.3)
+      parallel (~> 1.10)
+      parser (>= 3.2.0.0)
+      rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 1.8, < 3.0)
+      rexml (>= 3.2.5, < 4.0)
+      rubocop-ast (>= 1.24.1, < 2.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (>= 2.4.0, < 3.0)
+    rubocop-ast (1.26.0)
+      parser (>= 3.2.1.0)
+    ruby-progressbar (1.11.0)
+    shoulda-matchers (5.3.0)
+      activesupport (>= 5.2.0)
     thor (1.2.1)
     timeout (0.3.2)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
+    unicode-display_width (2.4.2)
     websocket-driver (0.7.5)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.5)
@@ -174,11 +201,14 @@ PLATFORMS
 DEPENDENCIES
   bootsnap
   debug
+  flatten
   mysql2 (~> 0.5)
-  pry
+  pry-rails
   puma (~> 5.0)
   rails (~> 7.0.4, >= 7.0.4.2)
   rspec-rails
+  rubocop
+  shoulda-matchers
   tzinfo-data
 
 RUBY VERSION
diff --git a/Rakefile b/Rakefile
index 9a5ea73..488c551 100644
--- a/Rakefile
+++ b/Rakefile
@@ -1,6 +1,8 @@
+# frozen_string_literal: true
+
 # Add your own tasks in files placed in lib/tasks ending in .rake,
 # for example lib/tasks/capistrano.rake, and they will automatically be available to Rake.
 
-require_relative "config/application"
+require_relative 'config/application'
 
 Rails.application.load_tasks
diff --git a/app/channels/application_cable/channel.rb b/app/channels/application_cable/channel.rb
index d672697..9aec230 100644
--- a/app/channels/application_cable/channel.rb
+++ b/app/channels/application_cable/channel.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module ApplicationCable
   class Channel < ActionCable::Channel::Base
   end
diff --git a/app/channels/application_cable/connection.rb b/app/channels/application_cable/connection.rb
index 0ff5442..8d6c2a1 100644
--- a/app/channels/application_cable/connection.rb
+++ b/app/channels/application_cable/connection.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module ApplicationCable
   class Connection < ActionCable::Connection::Base
   end
diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index 4ac8823..13c271f 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -1,2 +1,4 @@
+# frozen_string_literal: true
+
 class ApplicationController < ActionController::API
 end
diff --git a/app/controllers/reservations_controller.rb b/app/controllers/reservations_controller.rb
new file mode 100644
index 0000000..f30192b
--- /dev/null
+++ b/app/controllers/reservations_controller.rb
@@ -0,0 +1,54 @@
+# frozen_string_literal: true
+
+class ReservationsController < ApplicationController
+  LOOKUP_ITEMS = YAML.load_file('lib/lookup.yml').deep_symbolize_keys
+
+  def create
+    data = parse_data(JSON.parse(request.body.read).smash)
+
+    guest = create_or_update_guest(data[:guest])
+
+    unless guest.valid?
+      render json: { success: false, errors: guest.errors }
+      return
+    end
+
+    reservation = create_or_update_reservation(data[:reservation], guest.id)
+
+    unless reservation.valid?
+      render json: { success: false, errors: reservation.errors }
+      return
+    end
+
+    render json: { success: true, guest:, reservation: }
+  end
+
+  private
+
+  def parse_data(data)
+    guest = {}
+    reservation = {}
+
+    data.each do |key, value|
+      record = LOOKUP_ITEMS[key.to_sym]
+      next if record.blank?
+
+      reservation[record[:property].to_sym] = value if record[:model] == 'reservation'
+      guest[record[:property].to_sym] = value if record[:model] == 'guest'
+    end
+
+    reservation[:guest_id] = guest[:id]
+    { reservation:, guest: }
+  end
+
+  def create_or_update_guest(data)
+    Guest.upsert(data)
+    Guest.find_by(email: data[:email])
+  end
+
+  def create_or_update_reservation(data, guest_id)
+    data[:guest_id] = guest_id
+    Reservation.upsert(data)
+    Reservation.find_by(code: data[:code])
+  end
+end
diff --git a/app/jobs/application_job.rb b/app/jobs/application_job.rb
index d394c3d..bef3959 100644
--- a/app/jobs/application_job.rb
+++ b/app/jobs/application_job.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class ApplicationJob < ActiveJob::Base
   # Automatically retry jobs that encountered a deadlock
   # retry_on ActiveRecord::Deadlocked
diff --git a/app/mailers/application_mailer.rb b/app/mailers/application_mailer.rb
index 3c34c81..d84cb6e 100644
--- a/app/mailers/application_mailer.rb
+++ b/app/mailers/application_mailer.rb
@@ -1,4 +1,6 @@
+# frozen_string_literal: true
+
 class ApplicationMailer < ActionMailer::Base
-  default from: "from@example.com"
-  layout "mailer"
+  default from: 'from@example.com'
+  layout 'mailer'
 end
diff --git a/app/models/application_record.rb b/app/models/application_record.rb
index b63caeb..08dc537 100644
--- a/app/models/application_record.rb
+++ b/app/models/application_record.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class ApplicationRecord < ActiveRecord::Base
   primary_abstract_class
 end
diff --git a/app/models/guest.rb b/app/models/guest.rb
new file mode 100644
index 0000000..2660ffc
--- /dev/null
+++ b/app/models/guest.rb
@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+class Guest < ApplicationRecord
+  has_many :reservations
+
+  validates :first_name,
+            :last_name,
+            :phone,
+            :email, presence: true
+
+  validates :email, format: { with: URI::MailTo::EMAIL_REGEXP }, uniqueness: true
+end
diff --git a/app/models/reservation.rb b/app/models/reservation.rb
new file mode 100644
index 0000000..509abca
--- /dev/null
+++ b/app/models/reservation.rb
@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+class Reservation < ApplicationRecord
+  belongs_to :guest
+
+  validates :code,
+            :date_start,
+            :date_end,
+            :number_adults,
+            :number_children,
+            :number_infants,
+            :amount_payout,
+            :amount_security,
+            :currency,
+            :status, presence: true
+
+  validates :code, uniqueness: true
+end
diff --git a/bin/bundle b/bin/bundle
index ee73929..3cb2676 100755
--- a/bin/bundle
+++ b/bin/bundle
@@ -8,46 +8,46 @@
 # this file is here to facilitate running it.
 #
 
-require "rubygems"
+require 'rubygems'
 
 m = Module.new do
   module_function
 
   def invoked_as_script?
-    File.expand_path($0) == File.expand_path(__FILE__)
+    File.expand_path($PROGRAM_NAME) == File.expand_path(__FILE__)
   end
 
   def env_var_version
-    ENV["BUNDLER_VERSION"]
+    ENV['BUNDLER_VERSION']
   end
 
   def cli_arg_version
     return unless invoked_as_script? # don't want to hijack other binstubs
-    return unless "update".start_with?(ARGV.first || " ") # must be running `bundle update`
+    return unless 'update'.start_with?(ARGV.first || ' ') # must be running `bundle update`
+
     bundler_version = nil
     update_index = nil
     ARGV.each_with_index do |a, i|
-      if update_index && update_index.succ == i && a =~ Gem::Version::ANCHORED_VERSION_PATTERN
-        bundler_version = a
-      end
+      bundler_version = a if update_index && update_index.succ == i && a =~ Gem::Version::ANCHORED_VERSION_PATTERN
       next unless a =~ /\A--bundler(?:[= ](#{Gem::Version::VERSION_PATTERN}))?\z/
-      bundler_version = $1
+
+      bundler_version = Regexp.last_match(1)
       update_index = i
     end
     bundler_version
   end
 
   def gemfile
-    gemfile = ENV["BUNDLE_GEMFILE"]
+    gemfile = ENV['BUNDLE_GEMFILE']
     return gemfile if gemfile && !gemfile.empty?
 
-    File.expand_path("../Gemfile", __dir__)
+    File.expand_path('../Gemfile', __dir__)
   end
 
   def lockfile
     lockfile =
       case File.basename(gemfile)
-      when "gems.rb" then gemfile.sub(/\.rb$/, gemfile)
+      when 'gems.rb' then gemfile.sub(/\.rb$/, gemfile)
       else "#{gemfile}.lock"
       end
     File.expand_path(lockfile)
@@ -55,8 +55,10 @@ m = Module.new do
 
   def lockfile_version
     return unless File.file?(lockfile)
+
     lockfile_contents = File.read(lockfile)
     return unless lockfile_contents =~ /\n\nBUNDLED WITH\n\s{2,}(#{Gem::Version::VERSION_PATTERN})\n/
+
     Regexp.last_match(1)
   end
 
@@ -76,20 +78,24 @@ m = Module.new do
   end
 
   def load_bundler!
-    ENV["BUNDLE_GEMFILE"] ||= gemfile
+    ENV['BUNDLE_GEMFILE'] ||= gemfile
 
     activate_bundler
   end
 
   def activate_bundler
     gem_error = activation_error_handling do
-      gem "bundler", bundler_requirement
+      gem 'bundler', bundler_requirement
     end
     return if gem_error.nil?
+
     require_error = activation_error_handling do
-      require "bundler/version"
+      require 'bundler/version'
+    end
+    if require_error.nil? && Gem::Requirement.new(bundler_requirement).satisfied_by?(Gem::Version.new(Bundler::VERSION))
+      return
     end
-    return if require_error.nil? && Gem::Requirement.new(bundler_requirement).satisfied_by?(Gem::Version.new(Bundler::VERSION))
+
     warn "Activating bundler (#{bundler_requirement}) failed:\n#{gem_error.message}\n\nTo install the version of bundler this project requires, run `gem install bundler -v '#{bundler_requirement}'`"
     exit 42
   end
@@ -104,6 +110,4 @@ end
 
 m.load_bundler!
 
-if m.invoked_as_script?
-  load Gem.bin_path("bundler", "bundle")
-end
+load Gem.bin_path('bundler', 'bundle') if m.invoked_as_script?
diff --git a/bin/rails b/bin/rails
index efc0377..a31728a 100755
--- a/bin/rails
+++ b/bin/rails
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
-APP_PATH = File.expand_path("../config/application", __dir__)
-require_relative "../config/boot"
-require "rails/commands"
+# frozen_string_literal: true
+
+APP_PATH = File.expand_path('../config/application', __dir__)
+require_relative '../config/boot'
+require 'rails/commands'
diff --git a/bin/rake b/bin/rake
index 4fbf10b..c199955 100755
--- a/bin/rake
+++ b/bin/rake
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
-require_relative "../config/boot"
-require "rake"
+# frozen_string_literal: true
+
+require_relative '../config/boot'
+require 'rake'
 Rake.application.run
diff --git a/bin/setup b/bin/setup
index ec47b79..516b651 100755
--- a/bin/setup
+++ b/bin/setup
@@ -1,8 +1,10 @@
 #!/usr/bin/env ruby
-require "fileutils"
+# frozen_string_literal: true
+
+require 'fileutils'
 
 # path to your application root.
-APP_ROOT = File.expand_path("..", __dir__)
+APP_ROOT = File.expand_path('..', __dir__)
 
 def system!(*args)
   system(*args) || abort("\n== Command #{args} failed ==")
@@ -13,9 +15,9 @@ FileUtils.chdir APP_ROOT do
   # This script is idempotent, so that you can run it at any time and get an expectable outcome.
   # Add necessary setup steps to this file.
 
-  puts "== Installing dependencies =="
-  system! "gem install bundler --conservative"
-  system("bundle check") || system!("bundle install")
+  puts '== Installing dependencies =='
+  system! 'gem install bundler --conservative'
+  system('bundle check') || system!('bundle install')
 
   # puts "\n== Copying sample files =="
   # unless File.exist?("config/database.yml")
@@ -23,11 +25,11 @@ FileUtils.chdir APP_ROOT do
   # end
 
   puts "\n== Preparing database =="
-  system! "bin/rails db:prepare"
+  system! 'bin/rails db:prepare'
 
   puts "\n== Removing old logs and tempfiles =="
-  system! "bin/rails log:clear tmp:clear"
+  system! 'bin/rails log:clear tmp:clear'
 
   puts "\n== Restarting application server =="
-  system! "bin/rails restart"
+  system! 'bin/rails restart'
 end
diff --git a/config.ru b/config.ru
index 4a3c09a..6dc8321 100644
--- a/config.ru
+++ b/config.ru
@@ -1,6 +1,8 @@
+# frozen_string_literal: true
+
 # This file is used by Rack-based servers to start the application.
 
-require_relative "config/environment"
+require_relative 'config/environment'
 
 run Rails.application
 Rails.application.load_server
diff --git a/config/application.rb b/config/application.rb
index 147f25a..8cbf76f 100644
--- a/config/application.rb
+++ b/config/application.rb
@@ -1,6 +1,8 @@
-require_relative "boot"
+# frozen_string_literal: true
 
-require "rails/all"
+require_relative 'boot'
+
+require 'rails/all'
 
 # Require the gems listed in Gemfile, including any gems
 # you've limited to :test, :development, or :production.
diff --git a/config/boot.rb b/config/boot.rb
index 988a5dd..c04863f 100644
--- a/config/boot.rb
+++ b/config/boot.rb
@@ -1,4 +1,6 @@
-ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../Gemfile", __dir__)
+# frozen_string_literal: true
 
-require "bundler/setup" # Set up gems listed in the Gemfile.
-require "bootsnap/setup" # Speed up boot time by caching expensive operations.
+ENV['BUNDLE_GEMFILE'] ||= File.expand_path('../Gemfile', __dir__)
+
+require 'bundler/setup' # Set up gems listed in the Gemfile.
+require 'bootsnap/setup' # Speed up boot time by caching expensive operations.
diff --git a/config/environment.rb b/config/environment.rb
index cac5315..d5abe55 100644
--- a/config/environment.rb
+++ b/config/environment.rb
@@ -1,5 +1,7 @@
+# frozen_string_literal: true
+
 # Load the Rails application.
-require_relative "application"
+require_relative 'application'
 
 # Initialize the Rails application.
 Rails.application.initialize!
diff --git a/config/environments/development.rb b/config/environments/development.rb
index 3d6b073..2ee6f75 100644
--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -1,4 +1,6 @@
-require "active_support/core_ext/integer/time"
+# frozen_string_literal: true
+
+require 'active_support/core_ext/integer/time'
 
 Rails.application.configure do
   # Settings specified here will take precedence over those in config/application.rb.
@@ -19,10 +21,10 @@
 
   # Enable/disable caching. By default caching is disabled.
   # Run rails dev:cache to toggle caching.
-  if Rails.root.join("tmp/caching-dev.txt").exist?
+  if Rails.root.join('tmp/caching-dev.txt').exist?
     config.cache_store = :memory_store
     config.public_file_server.headers = {
-      "Cache-Control" => "public, max-age=#{2.days.to_i}"
+      'Cache-Control' => "public, max-age=#{2.days.to_i}"
     }
   else
     config.action_controller.perform_caching = false
@@ -53,7 +55,6 @@
   # Highlight code that triggered database queries in logs.
   config.active_record.verbose_query_logs = true
 
-
   # Raises error for missing translations.
   # config.i18n.raise_on_missing_translations = true
 
diff --git a/config/environments/production.rb b/config/environments/production.rb
index cb0b679..99eddd5 100644
--- a/config/environments/production.rb
+++ b/config/environments/production.rb
@@ -1,4 +1,6 @@
-require "active_support/core_ext/integer/time"
+# frozen_string_literal: true
+
+require 'active_support/core_ext/integer/time'
 
 Rails.application.configure do
   # Settings specified here will take precedence over those in config/application.rb.
@@ -13,7 +15,7 @@
   config.eager_load = true
 
   # Full error reports are disabled and caching is turned on.
-  config.consider_all_requests_local       = false
+  config.consider_all_requests_local = false
 
   # Ensures that a master key has been made available in either ENV["RAILS_MASTER_KEY"]
   # or in config/master.key. This key is used to decrypt credentials (and other encrypted files).
@@ -21,7 +23,7 @@
 
   # Disable serving static files from the `/public` folder by default since
   # Apache or NGINX already handles this.
-  config.public_file_server.enabled = ENV["RAILS_SERVE_STATIC_FILES"].present?
+  config.public_file_server.enabled = ENV['RAILS_SERVE_STATIC_FILES'].present?
 
   # Enable serving of images, stylesheets, and JavaScripts from an asset server.
   # config.asset_host = "http://assets.example.com"
@@ -46,7 +48,7 @@
   config.log_level = :info
 
   # Prepend all log lines with the following tags.
-  config.log_tags = [ :request_id ]
+  config.log_tags = [:request_id]
 
   # Use a different cache store in production.
   # config.cache_store = :mem_cache_store
@@ -69,14 +71,14 @@
   config.active_support.report_deprecations = false
 
   # Use default logging formatter so that PID and timestamp are not suppressed.
-  config.log_formatter = ::Logger::Formatter.new
+  config.log_formatter = Logger::Formatter.new
 
   # Use a different logger for distributed setups.
   # require "syslog/logger"
   # config.logger = ActiveSupport::TaggedLogging.new(Syslog::Logger.new "app-name")
 
-  if ENV["RAILS_LOG_TO_STDOUT"].present?
-    logger           = ActiveSupport::Logger.new(STDOUT)
+  if ENV['RAILS_LOG_TO_STDOUT'].present?
+    logger           = ActiveSupport::Logger.new($stdout)
     logger.formatter = config.log_formatter
     config.logger    = ActiveSupport::TaggedLogging.new(logger)
   end
diff --git a/config/environments/test.rb b/config/environments/test.rb
index 6ea4d1e..8f3f63c 100644
--- a/config/environments/test.rb
+++ b/config/environments/test.rb
@@ -1,4 +1,6 @@
-require "active_support/core_ext/integer/time"
+# frozen_string_literal: true
+
+require 'active_support/core_ext/integer/time'
 
 # The test environment is used exclusively to run your application's
 # test suite. You never need to work with it otherwise. Remember that
@@ -14,12 +16,12 @@
   # Eager loading loads your whole application. When running a single test locally,
   # this probably isn't necessary. It's a good idea to do in a continuous integration
   # system, or in some way before deploying your code.
-  config.eager_load = ENV["CI"].present?
+  config.eager_load = ENV['CI'].present?
 
   # Configure public file server for tests with Cache-Control for performance.
   config.public_file_server.enabled = true
   config.public_file_server.headers = {
-    "Cache-Control" => "public, max-age=#{1.hour.to_i}"
+    'Cache-Control' => "public, max-age=#{1.hour.to_i}"
   }
 
   # Show full error reports and disable caching.
diff --git a/config/initializers/cors.rb b/config/initializers/cors.rb
index e5a82f1..38d411f 100644
--- a/config/initializers/cors.rb
+++ b/config/initializers/cors.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 # Be sure to restart your server when you modify this file.
 
 # Avoid CORS issues when API is called from the frontend app.
diff --git a/config/initializers/filter_parameter_logging.rb b/config/initializers/filter_parameter_logging.rb
index adc6568..3df77c5 100644
--- a/config/initializers/filter_parameter_logging.rb
+++ b/config/initializers/filter_parameter_logging.rb
@@ -1,8 +1,10 @@
+# frozen_string_literal: true
+
 # Be sure to restart your server when you modify this file.
 
 # Configure parameters to be filtered from the log file. Use this to limit dissemination of
 # sensitive information. See the ActiveSupport::ParameterFilter documentation for supported
 # notations and behaviors.
-Rails.application.config.filter_parameters += [
-  :passw, :secret, :token, :_key, :crypt, :salt, :certificate, :otp, :ssn
+Rails.application.config.filter_parameters += %i[
+  passw secret token _key crypt salt certificate otp ssn
 ]
diff --git a/config/initializers/inflections.rb b/config/initializers/inflections.rb
index 3860f65..6c78420 100644
--- a/config/initializers/inflections.rb
+++ b/config/initializers/inflections.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 # Be sure to restart your server when you modify this file.
 
 # Add new inflection rules using the following format. Inflections
diff --git a/config/puma.rb b/config/puma.rb
index daaf036..1713441 100644
--- a/config/puma.rb
+++ b/config/puma.rb
@@ -1,28 +1,30 @@
+# frozen_string_literal: true
+
 # Puma can serve each request in a thread from an internal thread pool.
 # The `threads` method setting takes two numbers: a minimum and maximum.
 # Any libraries that use thread pools should be configured to match
 # the maximum value specified for Puma. Default is set to 5 threads for minimum
 # and maximum; this matches the default thread size of Active Record.
 #
-max_threads_count = ENV.fetch("RAILS_MAX_THREADS") { 5 }
-min_threads_count = ENV.fetch("RAILS_MIN_THREADS") { max_threads_count }
+max_threads_count = ENV.fetch('RAILS_MAX_THREADS', 5)
+min_threads_count = ENV.fetch('RAILS_MIN_THREADS') { max_threads_count }
 threads min_threads_count, max_threads_count
 
 # Specifies the `worker_timeout` threshold that Puma will use to wait before
 # terminating a worker in development environments.
 #
-worker_timeout 3600 if ENV.fetch("RAILS_ENV", "development") == "development"
+worker_timeout 3600 if ENV.fetch('RAILS_ENV', 'development') == 'development'
 
 # Specifies the `port` that Puma will listen on to receive requests; default is 3000.
 #
-port ENV.fetch("PORT") { 3000 }
+port ENV.fetch('PORT', 3000)
 
 # Specifies the `environment` that Puma will run in.
 #
-environment ENV.fetch("RAILS_ENV") { "development" }
+environment ENV.fetch('RAILS_ENV', 'development')
 
 # Specifies the `pidfile` that Puma will use.
-pidfile ENV.fetch("PIDFILE") { "tmp/pids/server.pid" }
+pidfile ENV.fetch('PIDFILE', 'tmp/pids/server.pid')
 
 # Specifies the number of `workers` to boot in clustered mode.
 # Workers are forked web server processes. If using threads and workers together
diff --git a/config/routes.rb b/config/routes.rb
index 262ffd5..8374cd0 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -1,6 +1,5 @@
-Rails.application.routes.draw do
-  # Define your application routes per the DSL in https://guides.rubyonrails.org/routing.html
+# frozen_string_literal: true
 
-  # Defines the root path route ("/")
-  # root "articles#index"
+Rails.application.routes.draw do
+  post 'reservations/create'
 end
diff --git a/db/migrate/20230218155553_create_guests.rb b/db/migrate/20230218155553_create_guests.rb
new file mode 100644
index 0000000..e565adf
--- /dev/null
+++ b/db/migrate/20230218155553_create_guests.rb
@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+
+class CreateGuests < ActiveRecord::Migration[7.0]
+  def change
+    create_table :guests do |t|
+      t.string :first_name
+      t.string :last_name
+      t.string :phone
+      t.string :email
+
+      t.timestamps
+    end
+  end
+end
diff --git a/db/migrate/20230218160520_create_reservations.rb b/db/migrate/20230218160520_create_reservations.rb
new file mode 100644
index 0000000..86e1cd3
--- /dev/null
+++ b/db/migrate/20230218160520_create_reservations.rb
@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+class CreateReservations < ActiveRecord::Migration[7.0]
+  def change
+    create_table :reservations do |t|
+      t.string :code
+      t.date :date_start
+      t.date :date_end
+      t.integer :number_adults
+      t.integer :number_children
+      t.integer :number_infants
+      t.float :amount_payout
+      t.float :amount_security
+      t.string :currency
+      t.string :status
+
+      t.timestamps
+    end
+  end
+end
diff --git a/db/migrate/20230218161038_add_guest_to_reservations.rb b/db/migrate/20230218161038_add_guest_to_reservations.rb
new file mode 100644
index 0000000..61f0966
--- /dev/null
+++ b/db/migrate/20230218161038_add_guest_to_reservations.rb
@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class AddGuestToReservations < ActiveRecord::Migration[7.0]
+  def change
+    add_reference :reservations, :guest, null: false, foreign_key: true
+  end
+end
diff --git a/db/migrate/20230219221143_add_index_to_guests.rb b/db/migrate/20230219221143_add_index_to_guests.rb
new file mode 100644
index 0000000..987d437
--- /dev/null
+++ b/db/migrate/20230219221143_add_index_to_guests.rb
@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class AddIndexToGuests < ActiveRecord::Migration[7.0]
+  def change
+    add_index :guests, :email, unique: true
+  end
+end
diff --git a/db/migrate/20230219221354_add_index_to_reservations.rb b/db/migrate/20230219221354_add_index_to_reservations.rb
new file mode 100644
index 0000000..3da53ff
--- /dev/null
+++ b/db/migrate/20230219221354_add_index_to_reservations.rb
@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class AddIndexToReservations < ActiveRecord::Migration[7.0]
+  def change
+    add_index :reservations, :code, unique: true
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
new file mode 100644
index 0000000..c63beb1
--- /dev/null
+++ b/db/schema.rb
@@ -0,0 +1,51 @@
+# This file is auto-generated from the current state of the database. Instead
+# of editing this file, please use the migrations feature of Active Record to
+# incrementally modify your database, and then regenerate this schema definition.
+#
+# This file is the source Rails uses to define your schema when running `bin/rails
+# db:schema:load`. When creating a new database, `bin/rails db:schema:load` tends to
+# be faster and is potentially less error prone than running all of your
+# migrations from scratch. Old migrations may fail to apply correctly if those
+# migrations use external dependencies or application code.
+#
+# It's strongly recommended that you check this file into your version control system.
+
+ActiveRecord::Schema[7.0].define(version: 2023_02_19_221354) do
+  create_table "guests", charset: "utf8mb4", collation: "utf8mb4_0900_ai_ci", force: :cascade do |t|
+    t.string "first_name"
+    t.string "last_name"
+    t.string "phone"
+    t.string "email"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.index ["email"], name: "index_guests_on_email", unique: true
+  end
+
+  create_table "lookups", charset: "utf8mb4", collation: "utf8mb4_0900_ai_ci", force: :cascade do |t|
+    t.string "key"
+    t.string "model"
+    t.string "property"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+  end
+
+  create_table "reservations", charset: "utf8mb4", collation: "utf8mb4_0900_ai_ci", force: :cascade do |t|
+    t.string "code"
+    t.date "date_start"
+    t.date "date_end"
+    t.integer "number_adults"
+    t.integer "number_children"
+    t.integer "number_infants"
+    t.float "amount_payout"
+    t.float "amount_security"
+    t.string "currency"
+    t.string "status"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.bigint "guest_id", null: false
+    t.index ["code"], name: "index_reservations_on_code", unique: true
+    t.index ["guest_id"], name: "index_reservations_on_guest_id"
+  end
+
+  add_foreign_key "reservations", "guests"
+end
diff --git a/db/seeds.rb b/db/seeds.rb
index bc25fce..0664d1b 100644
--- a/db/seeds.rb
+++ b/db/seeds.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 # This file should contain all the record creation needed to seed the database with its default values.
 # The data can then be loaded with the bin/rails db:seed command (or created alongside the database with db:setup).
 #
diff --git a/lib/lookup.yml b/lib/lookup.yml
new file mode 100644
index 0000000..3634aa5
--- /dev/null
+++ b/lib/lookup.yml
@@ -0,0 +1,79 @@
+---
+reservation_code:
+  model: reservation
+  property: code
+start_date:
+  model: reservation
+  property: date_start
+end_date:
+  model: reservation
+  property: date_end
+adults:
+  model: reservation
+  property: number_adults
+children:
+  model: reservation
+  property: number_children
+infants:
+  model: reservation
+  property: number_infants
+status:
+  model: reservation
+  property: status
+first_name:
+  model: guest
+  property: first_name
+last_name:
+  model: guest
+  property: last_name
+phone:
+  model: guest
+  property: phone
+email:
+  model: guest
+  property: email
+currency:
+  model: reservation
+  property: currency
+payout_price:
+  model: reservation
+  property: amount_payout
+security_price:
+  model: reservation
+  property: amount_security
+code:
+  model: reservation
+  property: code
+expected_payout_amount:
+  model: reservation
+  property: amount_payout
+number_of_adults:
+  model: reservation
+  property: number_adults
+number_of_children:
+  model: reservation
+  property: number_children
+number_of_infants:
+  model: reservation
+  property: number_infants
+guest_email:
+  model: guest
+  property: email
+guest_first_name:
+  model: guest
+  property: first_name
+guest_last_name:
+  model: guest
+  property: last_name
+guest_phone_numbers:
+  model: guest
+  property: phone
+listing_security_price_accurate:
+  model: reservation
+  property: amount_security
+host_currency:
+  model: reservation
+  property: currency
+status_type:
+  model: reservation
+  property: status
diff --git a/spec/controllers/reservations_controller_spec.rb b/spec/controllers/reservations_controller_spec.rb
new file mode 100644
index 0000000..a7e8c40
--- /dev/null
+++ b/spec/controllers/reservations_controller_spec.rb
@@ -0,0 +1,125 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe ReservationsController, type: :controller do
+  describe 'POST #create' do
+    context 'with valid params' do
+      context 'using payload 1' do
+        let(:guest_attributes) do
+          {
+            first_name: 'Wayne',
+            last_name: 'Woodbridge',
+            phone: '639123456789',
+            email: 'wayne_woodbridge@bnb.com'
+          }
+        end
+
+        let(:reservation_attributes) do
+          {
+            code: 'YYY12345678',
+            date_start: '2021-04-14'.to_date,
+            date_end: '2021-04-18'.to_date,
+            number_adults: 2,
+            number_children: 2,
+            number_infants: 0,
+            amount_payout: 4200.0,
+            amount_security: 500.0,
+            currency: 'AUD',
+            status: 'accepted'
+          }
+        end
+
+        before do
+          post :create, body: file_fixture('payload-1.json').read
+        end
+
+        specify { expect(response).to have_http_status(:ok) }
+        specify { expect(JSON.parse(response.body)['success']).to be_truthy }
+
+        it 'creates the guest' do
+          guest = Guest.last
+
+          guest_attributes.each do |key, value|
+            expect(guest[key]).to eq(value)
+          end
+        end
+
+        it 'creates the reservation' do
+          reservation = Reservation.last
+
+          reservation_attributes.each do |key, value|
+            expect(reservation[key]).to eq(value)
+          end
+        end
+      end
+
+      context 'using payload 2' do
+        let(:guest_attributes) do
+          {
+            first_name: 'Wayne',
+            last_name: 'Woodbridge',
+            phone: "---\n- '639123456789'\n- '639123456789'\n",
+            email: 'wayne_woodbridge@bnb.com'
+          }
+        end
+
+        let(:reservation_attributes) do
+          {
+            code: 'XXX12345678',
+            date_start: '2021-03-12'.to_date,
+            date_end: '2021-03-16'.to_date,
+            number_adults: 2,
+            number_children: 2,
+            number_infants: 0,
+            amount_payout: 3800.0,
+            amount_security: 500.0,
+            currency: 'AUD',
+            status: 'accepted'
+          }
+        end
+
+        before do
+          post :create, body: file_fixture('payload-2.json').read
+        end
+
+        specify { expect(response).to have_http_status(:ok) }
+        specify { expect(JSON.parse(response.body)['success']).to be_truthy }
+
+        it 'creates the guest' do
+          guest = Guest.last
+
+          guest_attributes.each do |key, value|
+            expect(guest[key]).to eq(value)
+          end
+        end
+
+        it 'creates the reservation' do
+          reservation = Reservation.last
+
+          reservation_attributes.each do |key, value|
+            expect(reservation[key]).to eq(value)
+          end
+        end
+      end
+    end
+
+    context 'with invalid guest params' do
+      before do
+        post :create, body: file_fixture('invalid-guest-data.json').read
+      end
+
+      specify { expect(response).to have_http_status(:ok) }
+      specify { expect(JSON.parse(response.body)['success']).to be_falsey }
+    end
+
+    context 'with invalid reservation params' do
+      before do
+        post :create, body: file_fixture('invalid-reservation-data.json').read
+      end
+
+      specify { expect(response).to have_http_status(:ok) }
+      specify { expect(JSON.parse(response.body)['success']).to be_falsey }
+    end
+  end
+end
diff --git a/spec/fixtures/files/invalid-guest-data.json b/spec/fixtures/files/invalid-guest-data.json
new file mode 100644
index 0000000..e661928
--- /dev/null
+++ b/spec/fixtures/files/invalid-guest-data.json
@@ -0,0 +1,21 @@
+{
+  "reservation_code": "YYY12345678",
+  "start_date": "2021-04-14",
+  "end_date": "2021-04-18",
+  "nights": 4,
+  "guests": 4,
+  "adults": 2,
+  "children": 2,
+  "infants": 0,
+  "status": "accepted",
+  "guest": {
+    "first_name": "",
+    "last_name": "Woodbridge",
+    "phone": "639123456789",
+    "email": "wayne_woodbridge@bnb.com"
+  },
+  "currency": "AUD",
+  "payout_price": "4200.00",
+  "security_price": "500",
+  "total_price": "4700.00"
+}
\ No newline at end of file
diff --git a/spec/fixtures/files/invalid-reservation-data.json b/spec/fixtures/files/invalid-reservation-data.json
new file mode 100644
index 0000000..8f21c35
--- /dev/null
+++ b/spec/fixtures/files/invalid-reservation-data.json
@@ -0,0 +1,27 @@
+{
+  "reservation": {
+    "code": "XXX12345678",
+    "start_date": "2021-03-12",
+    "end_date": "2021-03-16",
+    "expected_payout_amount": "",
+    "guest_details": {
+      "localized_description": "4 guests",
+      "number_of_adults": 2,
+      "number_of_children": 2,
+      "number_of_infants": 0
+    },
+    "guest_email": "wayne_woodbridge@bnb.com",
+    "guest_first_name": "Wayne",
+    "guest_last_name": "Woodbridge",
+    "guest_phone_numbers": [
+      "639123456789",
+      "639123456789"
+    ],
+    "listing_security_price_accurate": "500.00",
+    "host_currency": "AUD",
+    "nights": 4,
+    "number_of_guests": 4,
+    "status_type": "accepted",
+    "total_paid_amount_accurate": "4300.00"
+  }
+}
\ No newline at end of file
diff --git a/spec/fixtures/files/payload-1.json b/spec/fixtures/files/payload-1.json
new file mode 100644
index 0000000..ccb9deb
--- /dev/null
+++ b/spec/fixtures/files/payload-1.json
@@ -0,0 +1,21 @@
+{
+  "reservation_code": "YYY12345678",
+  "start_date": "2021-04-14",
+  "end_date": "2021-04-18",
+  "nights": 4,
+  "guests": 4,
+  "adults": 2,
+  "children": 2,
+  "infants": 0,
+  "status": "accepted",
+  "guest": {
+    "first_name": "Wayne",
+    "last_name": "Woodbridge",
+    "phone": "639123456789",
+    "email": "wayne_woodbridge@bnb.com"
+  },
+  "currency": "AUD",
+  "payout_price": "4200.00",
+  "security_price": "500",
+  "total_price": "4700.00"
+}
\ No newline at end of file
diff --git a/spec/fixtures/files/payload-2.json b/spec/fixtures/files/payload-2.json
new file mode 100644
index 0000000..7843704
--- /dev/null
+++ b/spec/fixtures/files/payload-2.json
@@ -0,0 +1,27 @@
+{
+  "reservation": {
+    "code": "XXX12345678",
+    "start_date": "2021-03-12",
+    "end_date": "2021-03-16",
+    "expected_payout_amount": "3800.00",
+    "guest_details": {
+      "localized_description": "4 guests",
+      "number_of_adults": 2,
+      "number_of_children": 2,
+      "number_of_infants": 0
+    },
+    "guest_email": "wayne_woodbridge@bnb.com",
+    "guest_first_name": "Wayne",
+    "guest_last_name": "Woodbridge",
+    "guest_phone_numbers": [
+      "639123456789",
+      "639123456789"
+    ],
+    "listing_security_price_accurate": "500.00",
+    "host_currency": "AUD",
+    "nights": 4,
+    "number_of_guests": 4,
+    "status_type": "accepted",
+    "total_paid_amount_accurate": "4300.00"
+  }
+}
\ No newline at end of file
diff --git a/spec/models/guest_spec.rb b/spec/models/guest_spec.rb
new file mode 100644
index 0000000..be2847e
--- /dev/null
+++ b/spec/models/guest_spec.rb
@@ -0,0 +1,16 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe Guest, type: :model do
+  describe 'associations' do
+    it { should have_many(:reservations) }
+  end
+
+  describe 'validations' do
+    it { should validate_presence_of(:first_name) }
+    it { should validate_presence_of(:last_name) }
+    it { should validate_presence_of(:phone) }
+    it { should validate_presence_of(:email) }
+  end
+end
diff --git a/spec/models/reservation_spec.rb b/spec/models/reservation_spec.rb
new file mode 100644
index 0000000..0358fbc
--- /dev/null
+++ b/spec/models/reservation_spec.rb
@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe Reservation, type: :model do
+  describe 'associations' do
+    it { should belong_to(:guest) }
+  end
+
+  describe 'validations' do
+    it { should validate_presence_of(:code) }
+    it { should validate_presence_of(:date_start) }
+    it { should validate_presence_of(:date_end) }
+    it { should validate_presence_of(:number_adults) }
+    it { should validate_presence_of(:number_children) }
+    it { should validate_presence_of(:number_infants) }
+    it { should validate_presence_of(:amount_payout) }
+    it { should validate_presence_of(:amount_security) }
+    it { should validate_presence_of(:currency) }
+    it { should validate_presence_of(:status) }
+  end
+end
diff --git a/spec/rails_helper.rb b/spec/rails_helper.rb
index a53bdba..2370b48 100644
--- a/spec/rails_helper.rb
+++ b/spec/rails_helper.rb
@@ -1,9 +1,11 @@
+# frozen_string_literal: true
+
 # This file is copied to spec/ when you run 'rails generate rspec:install'
 require 'spec_helper'
 ENV['RAILS_ENV'] ||= 'test'
 require_relative '../config/environment'
 # Prevent database truncation if the environment is production
-abort("The Rails environment is running in production mode!") if Rails.env.production?
+abort('The Rails environment is running in production mode!') if Rails.env.production?
 require 'rspec/rails'
 # Add additional requires below this line. Rails is not loaded until this point!
 
@@ -29,9 +31,12 @@
 rescue ActiveRecord::PendingMigrationError => e
   abort e.to_s.strip
 end
+
+Dir[Rails.root.join('spec/support/*.rb')].each { |path| require path }
+
 RSpec.configure do |config|
   # Remove this line if you're not using ActiveRecord or ActiveRecord fixtures
-  config.fixture_path = "#{::Rails.root}/spec/fixtures"
+  config.fixture_path = "#{Rails.root}/spec/fixtures"
 
   # If you're not using ActiveRecord, or you'd prefer not to run each of your
   # examples within a transaction, remove the following line or assign false
@@ -61,3 +66,10 @@
   # arbitrary gems may also be filtered via:
   # config.filter_gems_from_backtrace("gem name")
 end
+
+Shoulda::Matchers.configure do |config|
+  config.integrate do |with|
+    with.test_framework :rspec
+    with.library :rails
+  end
+end
diff --git a/spec/requests/reservations_spec.rb b/spec/requests/reservations_spec.rb
new file mode 100644
index 0000000..3361936
--- /dev/null
+++ b/spec/requests/reservations_spec.rb
@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe 'Reservations', type: :request do
+  describe 'POST /create' do
+    it 'returns http success' do
+      # post '/reservations/create'
+      # expect(response).to have_http_status(:success)
+    end
+  end
+end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index a0d4080..89f676c 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # This file was generated by the `rails generate rspec:install` command. Conventionally, all
 # specs live under a `spec` directory, which RSpec adds to the `$LOAD_PATH`.
 # The generated `.rspec` file contains `--require spec_helper` which will cause
@@ -44,51 +46,49 @@
   # triggering implicit auto-inclusion in groups with matching metadata.
   config.shared_context_metadata_behavior = :apply_to_host_groups
 
-# The settings below are suggested to provide a good initial experience
-# with RSpec, but feel free to customize to your heart's content.
-=begin
-  # This allows you to limit a spec run to individual examples or groups
-  # you care about by tagging them with `:focus` metadata. When nothing
-  # is tagged with `:focus`, all examples get run. RSpec also provides
-  # aliases for `it`, `describe`, and `context` that include `:focus`
-  # metadata: `fit`, `fdescribe` and `fcontext`, respectively.
-  config.filter_run_when_matching :focus
-
-  # Allows RSpec to persist some state between runs in order to support
-  # the `--only-failures` and `--next-failure` CLI options. We recommend
-  # you configure your source control system to ignore this file.
-  config.example_status_persistence_file_path = "spec/examples.txt"
-
-  # Limits the available syntax to the non-monkey patched syntax that is
-  # recommended. For more details, see:
-  # https://relishapp.com/rspec/rspec-core/docs/configuration/zero-monkey-patching-mode
-  config.disable_monkey_patching!
-
-  # Many RSpec users commonly either run the entire suite or an individual
-  # file, and it's useful to allow more verbose output when running an
-  # individual spec file.
-  if config.files_to_run.one?
-    # Use the documentation formatter for detailed output,
-    # unless a formatter has already been configured
-    # (e.g. via a command-line flag).
-    config.default_formatter = "doc"
-  end
-
-  # Print the 10 slowest examples and example groups at the
-  # end of the spec run, to help surface which specs are running
-  # particularly slow.
-  config.profile_examples = 10
-
-  # Run specs in random order to surface order dependencies. If you find an
-  # order dependency and want to debug it, you can fix the order by providing
-  # the seed, which is printed after each run.
-  #     --seed 1234
-  config.order = :random
-
-  # Seed global randomization in this process using the `--seed` CLI option.
-  # Setting this allows you to use `--seed` to deterministically reproduce
-  # test failures related to randomization by passing the same `--seed` value
-  # as the one that triggered the failure.
-  Kernel.srand config.seed
-=end
+  # The settings below are suggested to provide a good initial experience
+  # with RSpec, but feel free to customize to your heart's content.
+  #   # This allows you to limit a spec run to individual examples or groups
+  #   # you care about by tagging them with `:focus` metadata. When nothing
+  #   # is tagged with `:focus`, all examples get run. RSpec also provides
+  #   # aliases for `it`, `describe`, and `context` that include `:focus`
+  #   # metadata: `fit`, `fdescribe` and `fcontext`, respectively.
+  #   config.filter_run_when_matching :focus
+  #
+  #   # Allows RSpec to persist some state between runs in order to support
+  #   # the `--only-failures` and `--next-failure` CLI options. We recommend
+  #   # you configure your source control system to ignore this file.
+  #   config.example_status_persistence_file_path = "spec/examples.txt"
+  #
+  #   # Limits the available syntax to the non-monkey patched syntax that is
+  #   # recommended. For more details, see:
+  #   # https://relishapp.com/rspec/rspec-core/docs/configuration/zero-monkey-patching-mode
+  #   config.disable_monkey_patching!
+  #
+  #   # Many RSpec users commonly either run the entire suite or an individual
+  #   # file, and it's useful to allow more verbose output when running an
+  #   # individual spec file.
+  #   if config.files_to_run.one?
+  #     # Use the documentation formatter for detailed output,
+  #     # unless a formatter has already been configured
+  #     # (e.g. via a command-line flag).
+  #     config.default_formatter = "doc"
+  #   end
+  #
+  #   # Print the 10 slowest examples and example groups at the
+  #   # end of the spec run, to help surface which specs are running
+  #   # particularly slow.
+  #   config.profile_examples = 10
+  #
+  #   # Run specs in random order to surface order dependencies. If you find an
+  #   # order dependency and want to debug it, you can fix the order by providing
+  #   # the seed, which is printed after each run.
+  #   #     --seed 1234
+  #   config.order = :random
+  #
+  #   # Seed global randomization in this process using the `--seed` CLI option.
+  #   # Setting this allows you to use `--seed` to deterministically reproduce
+  #   # test failures related to randomization by passing the same `--seed` value
+  #   # as the one that triggered the failure.
+  #   Kernel.srand config.seed
 end
diff --git a/test/channels/application_cable/connection_test.rb b/test/channels/application_cable/connection_test.rb
index 800405f..4aee9b3 100644
--- a/test/channels/application_cable/connection_test.rb
+++ b/test/channels/application_cable/connection_test.rb
@@ -1,11 +1,15 @@
-require "test_helper"
+# frozen_string_literal: true
 
-class ApplicationCable::ConnectionTest < ActionCable::Connection::TestCase
-  # test "connects with cookies" do
-  #   cookies.signed[:user_id] = 42
-  #
-  #   connect
-  #
-  #   assert_equal connection.user_id, "42"
-  # end
+require 'test_helper'
+
+module ApplicationCable
+  class ConnectionTest < ActionCable::Connection::TestCase
+    # test "connects with cookies" do
+    #   cookies.signed[:user_id] = 42
+    #
+    #   connect
+    #
+    #   assert_equal connection.user_id, "42"
+    # end
+  end
 end
diff --git a/test/test_helper.rb b/test/test_helper.rb
index d713e37..0c92e8e 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -1,13 +1,17 @@
-ENV["RAILS_ENV"] ||= "test"
-require_relative "../config/environment"
-require "rails/test_help"
+# frozen_string_literal: true
 
-class ActiveSupport::TestCase
-  # Run tests in parallel with specified workers
-  parallelize(workers: :number_of_processors)
+ENV['RAILS_ENV'] ||= 'test'
+require_relative '../config/environment'
+require 'rails/test_help'
 
-  # Setup all fixtures in test/fixtures/*.yml for all tests in alphabetical order.
-  fixtures :all
+module ActiveSupport
+  class TestCase
+    # Run tests in parallel with specified workers
+    parallelize(workers: :number_of_processors)
 
-  # Add more helper methods to be used by all tests here...
+    # Setup all fixtures in test/fixtures/*.yml for all tests in alphabetical order.
+    fixtures :all
+
+    # Add more helper methods to be used by all tests here...
+  end
 end