write test for controller

.gitattributes

@@ -0,0 +1,8 @@
+# See https://git-scm.com/docs/gitattributes for more about git attribute files.
+
+# Mark the database schema as having been generated.
+db/schema.rb linguist-generated
+
+
+# Mark any vendored files as having been vendored.
+vendor/* linguist-vendored

.gitignore

@@ -0,0 +1,31 @@
+# See https://help.github.com/articles/ignoring-files for more about ignoring files.
+#
+# If you find yourself ignoring temporary files generated by your text editor
+# or operating system, you probably want to add a global ignore instead:
+#   git config --global core.excludesfile '~/.gitignore_global'
+
+# Ignore bundler config.
+/.bundle
+
+# Ignore the default SQLite database.
+/db/*.sqlite3
+/db/*.sqlite3-*
+
+# Ignore all logfiles and tempfiles.
+/log/*
+/tmp/*
+!/log/.keep
+!/tmp/.keep
+
+# Ignore pidfiles, but keep the directory.
+/tmp/pids/*
+!/tmp/pids/
+!/tmp/pids/.keep
+
+# Ignore uploaded files in development.
+/storage/*
+!/storage/.keep
+.byebug_history
+
+# Ignore master key for decrypting credentials and more.
+/config/master.key

.rspec

@@ -0,0 +1 @@
+--require spec_helper

.ruby-version

@@ -0,0 +1 @@
+ruby-3.0.2

Gemfile

@@ -0,0 +1,46 @@
+source 'https://rubygems.org'
+git_source(:github) { |repo| "https://github.com/#{repo}.git" }
+
+ruby '3.0.2'
+
+# Bundle edge Rails instead: gem 'rails', github: 'rails/rails', branch: 'main'
+gem 'rails', '~> 6.1.4', '>= 6.1.4.4'
+# Use sqlite3 as the database for Active Record
+gem 'sqlite3', '~> 1.4'
+# Use Puma as the app server
+gem 'puma', '~> 5.0'
+# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
+# gem 'jbuilder', '~> 2.7'
+# Use Redis adapter to run Action Cable in production
+# gem 'redis', '~> 4.0'
+# Use Active Model has_secure_password
+# gem 'bcrypt', '~> 3.1.7'
+
+# Use Active Storage variant
+# gem 'image_processing', '~> 1.2'
+
+# Reduces boot times through caching; required in config/boot.rb
+gem 'bootsnap', '>= 1.4.4', require: false
+
+# Use Rack CORS for handling Cross-Origin Resource Sharing (CORS), making cross-origin AJAX possible
+# gem 'rack-cors'
+
+group :development, :test do
+  # Call 'byebug' anywhere in the code to stop execution and get a debugger console
+  gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
+  gem 'rspec-rails', '~> 5.0', '>= 5.0.2'
+  gem 'factory_bot_rails', '~> 6.2'
+
+end
+
+group :development do
+end
+
+group :test do 
+  gem 'shoulda-matchers', '~> 5.0'
+  gem 'faker'
+  gem 'database_cleaner', '~> 2.0', '>= 2.0.1'
+  gem "capybara"
+end 
+# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
+gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]

Gemfile.lock

@@ -0,0 +1,208 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    actioncable (6.1.4.4)
+      actionpack (= 6.1.4.4)
+      activesupport (= 6.1.4.4)
+      nio4r (~> 2.0)
+      websocket-driver (>= 0.6.1)
+    actionmailbox (6.1.4.4)
+      actionpack (= 6.1.4.4)
+      activejob (= 6.1.4.4)
+      activerecord (= 6.1.4.4)
+      activestorage (= 6.1.4.4)
+      activesupport (= 6.1.4.4)
+      mail (>= 2.7.1)
+    actionmailer (6.1.4.4)
+      actionpack (= 6.1.4.4)
+      actionview (= 6.1.4.4)
+      activejob (= 6.1.4.4)
+      activesupport (= 6.1.4.4)
+      mail (~> 2.5, >= 2.5.4)
+      rails-dom-testing (~> 2.0)
+    actionpack (6.1.4.4)
+      actionview (= 6.1.4.4)
+      activesupport (= 6.1.4.4)
+      rack (~> 2.0, >= 2.0.9)
+      rack-test (>= 0.6.3)
+      rails-dom-testing (~> 2.0)
+      rails-html-sanitizer (~> 1.0, >= 1.2.0)
+    actiontext (6.1.4.4)
+      actionpack (= 6.1.4.4)
+      activerecord (= 6.1.4.4)
+      activestorage (= 6.1.4.4)
+      activesupport (= 6.1.4.4)
+      nokogiri (>= 1.8.5)
+    actionview (6.1.4.4)
+      activesupport (= 6.1.4.4)
+      builder (~> 3.1)
+      erubi (~> 1.4)
+      rails-dom-testing (~> 2.0)
+      rails-html-sanitizer (~> 1.1, >= 1.2.0)
+    activejob (6.1.4.4)
+      activesupport (= 6.1.4.4)
+      globalid (>= 0.3.6)
+    activemodel (6.1.4.4)
+      activesupport (= 6.1.4.4)
+    activerecord (6.1.4.4)
+      activemodel (= 6.1.4.4)
+      activesupport (= 6.1.4.4)
+    activestorage (6.1.4.4)
+      actionpack (= 6.1.4.4)
+      activejob (= 6.1.4.4)
+      activerecord (= 6.1.4.4)
+      activesupport (= 6.1.4.4)
+      marcel (~> 1.0.0)
+      mini_mime (>= 1.1.0)
+    activesupport (6.1.4.4)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
+      i18n (>= 1.6, < 2)
+      minitest (>= 5.1)
+      tzinfo (~> 2.0)
+      zeitwerk (~> 2.3)
+    addressable (2.8.0)
+      public_suffix (>= 2.0.2, < 5.0)
+    bootsnap (1.9.3)
+      msgpack (~> 1.0)
+    builder (3.2.4)
+    byebug (11.1.3)
+    capybara (3.36.0)
+      addressable
+      matrix
+      mini_mime (>= 0.1.3)
+      nokogiri (~> 1.8)
+      rack (>= 1.6.0)
+      rack-test (>= 0.6.3)
+      regexp_parser (>= 1.5, < 3.0)
+      xpath (~> 3.2)
+    concurrent-ruby (1.1.9)
+    crass (1.0.6)
+    database_cleaner (2.0.1)
+      database_cleaner-active_record (~> 2.0.0)
+    database_cleaner-active_record (2.0.1)
+      activerecord (>= 5.a)
+      database_cleaner-core (~> 2.0.0)
+    database_cleaner-core (2.0.1)
+    diff-lcs (1.4.4)
+    erubi (1.10.0)
+    factory_bot (6.2.0)
+      activesupport (>= 5.0.0)
+    factory_bot_rails (6.2.0)
+      factory_bot (~> 6.2.0)
+      railties (>= 5.0.0)
+    faker (2.19.0)
+      i18n (>= 1.6, < 2)
+    globalid (1.0.0)
+      activesupport (>= 5.0)
+    i18n (1.8.11)
+      concurrent-ruby (~> 1.0)
+    loofah (2.13.0)
+      crass (~> 1.0.2)
+      nokogiri (>= 1.5.9)
+    mail (2.7.1)
+      mini_mime (>= 0.1.1)
+    marcel (1.0.2)
+    matrix (0.4.2)
+    method_source (1.0.0)
+    mini_mime (1.1.2)
+    minitest (5.15.0)
+    msgpack (1.4.2)
+    nio4r (2.5.8)
+    nokogiri (1.12.5-x64-mingw32)
+      racc (~> 1.4)
+    public_suffix (4.0.6)
+    puma (5.5.2)
+      nio4r (~> 2.0)
+    racc (1.6.0)
+    rack (2.2.3)
+    rack-test (1.1.0)
+      rack (>= 1.0, < 3)
+    rails (6.1.4.4)
+      actioncable (= 6.1.4.4)
+      actionmailbox (= 6.1.4.4)
+      actionmailer (= 6.1.4.4)
+      actionpack (= 6.1.4.4)
+      actiontext (= 6.1.4.4)
+      actionview (= 6.1.4.4)
+      activejob (= 6.1.4.4)
+      activemodel (= 6.1.4.4)
+      activerecord (= 6.1.4.4)
+      activestorage (= 6.1.4.4)
+      activesupport (= 6.1.4.4)
+      bundler (>= 1.15.0)
+      railties (= 6.1.4.4)
+      sprockets-rails (>= 2.0.0)
+    rails-dom-testing (2.0.3)
+      activesupport (>= 4.2.0)
+      nokogiri (>= 1.6)
+    rails-html-sanitizer (1.4.2)
+      loofah (~> 2.3)
+    railties (6.1.4.4)
+      actionpack (= 6.1.4.4)
+      activesupport (= 6.1.4.4)
+      method_source
+      rake (>= 0.13)
+      thor (~> 1.0)
+    rake (13.0.6)
+    regexp_parser (2.2.0)
+    rspec-core (3.10.1)
+      rspec-support (~> 3.10.0)
+    rspec-expectations (3.10.1)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.10.0)
+    rspec-mocks (3.10.2)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.10.0)
+    rspec-rails (5.0.2)
+      actionpack (>= 5.2)
+      activesupport (>= 5.2)
+      railties (>= 5.2)
+      rspec-core (~> 3.10)
+      rspec-expectations (~> 3.10)
+      rspec-mocks (~> 3.10)
+      rspec-support (~> 3.10)
+    rspec-support (3.10.3)
+    shoulda-matchers (5.0.0)
+      activesupport (>= 5.2.0)
+    sprockets (4.0.2)
+      concurrent-ruby (~> 1.0)
+      rack (> 1, < 3)
+    sprockets-rails (3.4.2)
+      actionpack (>= 5.2)
+      activesupport (>= 5.2)
+      sprockets (>= 3.0.0)
+    sqlite3 (1.4.2)
+    thor (1.1.0)
+    tzinfo (2.0.4)
+      concurrent-ruby (~> 1.0)
+    tzinfo-data (1.2021.5)
+      tzinfo (>= 1.0.0)
+    websocket-driver (0.7.5)
+      websocket-extensions (>= 0.1.0)
+    websocket-extensions (0.1.5)
+    xpath (3.2.0)
+      nokogiri (~> 1.8)
+    zeitwerk (2.5.1)
+
+PLATFORMS
+  x64-mingw32
+
+DEPENDENCIES
+  bootsnap (>= 1.4.4)
+  byebug
+  capybara
+  database_cleaner (~> 2.0, >= 2.0.1)
+  factory_bot_rails (~> 6.2)
+  faker
+  puma (~> 5.0)
+  rails (~> 6.1.4, >= 6.1.4.4)
+  rspec-rails (~> 5.0, >= 5.0.2)
+  shoulda-matchers (~> 5.0)
+  sqlite3 (~> 1.4)
+  tzinfo-data
+
+RUBY VERSION
+   ruby 3.0.2p107
+
+BUNDLED WITH
+   2.2.22

README.md

@@ -0,0 +1,24 @@
+# README
+
+This README would normally document whatever steps are necessary to get the
+application up and running.
+
+Things you may want to cover:
+
+* Ruby version
+
+* System dependencies
+
+* Configuration
+
+* Database creation
+
+* Database initialization
+
+* How to run the test suite
+
+* Services (job queues, cache servers, search engines, etc.)
+
+* Deployment instructions
+
+* ...

Rakefile

@@ -0,0 +1,6 @@
+# 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"
+
+Rails.application.load_tasks

app/channels/application_cable/channel.rb

@@ -0,0 +1,4 @@
+module ApplicationCable
+  class Channel < ActionCable::Channel::Base
+  end
+end

app/channels/application_cable/connection.rb

@@ -0,0 +1,4 @@
+module ApplicationCable
+  class Connection < ActionCable::Connection::Base
+  end
+end

app/controllers/application_controller.rb

@@ -0,0 +1,4 @@
+class ApplicationController < ActionController::API
+    include Response 
+    include ExceptionHandler
+end

app/controllers/concerns/exception_handler.rb

@@ -0,0 +1,13 @@
+module ExceptionHandler 
+    # provides the more graceful `included` method 
+    extend ActiveSupport::Concern
+
+    included do 
+        rescue_from ActiveRecord::RecordNotFound do |e|
+            json_response({ message: e.message }, :not_found)
+        end 
+        rescue_from ActiveRecord::RecordInvalid do |e|
+            json_response({ message: e.message }, :unprocessable_entity)
+        end
+    end 
+end 

app/controllers/concerns/response.rb

@@ -0,0 +1,5 @@
+module Response 
+    def json_response(object, status = :ok)
+        render json: object, status: status 
+    end 
+end 

app/controllers/items_controller.rb

@@ -0,0 +1,2 @@
+class ItemsController < ApplicationController
+end