Upgrade to Rails 5

Gemfile

@@ -25,8 +25,8 @@ group :development, :test do
   gem 'ffaker', '2.2.0'
   gem 'database_cleaner', '1.5.3'
   gem 'tqdm', '0.3.0'
-  gem 'rails', '4.2.7.1'
+  gem 'rails', '5.0.0.1'
 end
 
-gem 'simplecov', '0.12.0', require: false, group: :test
-gem 'codeclimate-test-reporter', group: :test, require: nil
+gem 'simplecov', '0.12.0', group: :test
+gem 'codeclimate-test-reporter', '1.0.0', group: :test

Gemfile.lock

@@ -11,51 +11,52 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
-    actionmailer (4.2.7.1)
-      actionpack (= 4.2.7.1)
-      actionview (= 4.2.7.1)
-      activejob (= 4.2.7.1)
+    actioncable (5.0.0.1)
+      actionpack (= 5.0.0.1)
+      nio4r (~> 1.2)
+      websocket-driver (~> 0.6.1)
+    actionmailer (5.0.0.1)
+      actionpack (= 5.0.0.1)
+      actionview (= 5.0.0.1)
+      activejob (= 5.0.0.1)
       mail (~> 2.5, >= 2.5.4)
-      rails-dom-testing (~> 1.0, >= 1.0.5)
-    actionpack (4.2.7.1)
-      actionview (= 4.2.7.1)
-      activesupport (= 4.2.7.1)
-      rack (~> 1.6)
-      rack-test (~> 0.6.2)
-      rails-dom-testing (~> 1.0, >= 1.0.5)
+      rails-dom-testing (~> 2.0)
+    actionpack (5.0.0.1)
+      actionview (= 5.0.0.1)
+      activesupport (= 5.0.0.1)
+      rack (~> 2.0)
+      rack-test (~> 0.6.3)
+      rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.0.2)
-    actionview (4.2.7.1)
-      activesupport (= 4.2.7.1)
+    actionview (5.0.0.1)
+      activesupport (= 5.0.0.1)
       builder (~> 3.1)
       erubis (~> 2.7.0)
-      rails-dom-testing (~> 1.0, >= 1.0.5)
+      rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.0.2)
     active_record_union (1.2.0)
       activerecord (>= 4.0)
-    activejob (4.2.7.1)
-      activesupport (= 4.2.7.1)
-      globalid (>= 0.3.0)
-    activemodel (4.2.7.1)
-      activesupport (= 4.2.7.1)
-      builder (~> 3.1)
-    activerecord (4.2.7.1)
-      activemodel (= 4.2.7.1)
-      activesupport (= 4.2.7.1)
-      arel (~> 6.0)
-    activesupport (4.2.7.1)
+    activejob (5.0.0.1)
+      activesupport (= 5.0.0.1)
+      globalid (>= 0.3.6)
+    activemodel (5.0.0.1)
+      activesupport (= 5.0.0.1)
+    activerecord (5.0.0.1)
+      activemodel (= 5.0.0.1)
+      activesupport (= 5.0.0.1)
+      arel (~> 7.0)
+    activesupport (5.0.0.1)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (~> 0.7)
-      json (~> 1.7, >= 1.7.7)
       minitest (~> 5.1)
-      thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    arel (6.0.3)
+    arel (7.1.4)
     ast (2.3.0)
     builder (3.2.2)
     closure_tree (6.2.0)
       activerecord (>= 4.1.0)
       with_advisory_lock (>= 3.0.0)
-    codeclimate-test-reporter (0.6.0)
-      simplecov (>= 0.7.1, < 1.0.0)
+    codeclimate-test-reporter (1.0.0)
     coderay (1.1.1)
     concurrent-ruby (1.0.2)
     configurations (2.2.1)
@@ -72,7 +73,7 @@ GEM
     globalid (0.3.7)
       activesupport (>= 4.1.0)
     i18n (0.7.0)
-    json (1.8.3)
+    json (2.0.2)
     loofah (2.0.3)
       nokogiri (>= 1.5.9)
     mail (2.6.4)
@@ -83,6 +84,7 @@ GEM
     mime-types-data (3.2016.0521)
     mini_portile2 (2.1.0)
     minitest (5.9.1)
+    nio4r (1.2.1)
     nokogiri (1.6.8.1)
       mini_portile2 (~> 2.1.0)
     parser (2.3.1.4)
@@ -94,31 +96,30 @@ GEM
       slop (~> 3.4)
     pry-rails (0.3.4)
       pry (>= 0.9.10)
-    rack (1.6.4)
+    rack (2.0.1)
     rack-test (0.6.3)
       rack (>= 1.0)
-    rails (4.2.7.1)
-      actionmailer (= 4.2.7.1)
-      actionpack (= 4.2.7.1)
-      actionview (= 4.2.7.1)
-      activejob (= 4.2.7.1)
-      activemodel (= 4.2.7.1)
-      activerecord (= 4.2.7.1)
-      activesupport (= 4.2.7.1)
+    rails (5.0.0.1)
+      actioncable (= 5.0.0.1)
+      actionmailer (= 5.0.0.1)
+      actionpack (= 5.0.0.1)
+      actionview (= 5.0.0.1)
+      activejob (= 5.0.0.1)
+      activemodel (= 5.0.0.1)
+      activerecord (= 5.0.0.1)
+      activesupport (= 5.0.0.1)
       bundler (>= 1.3.0, < 2.0)
-      railties (= 4.2.7.1)
-      sprockets-rails
-    rails-deprecated_sanitizer (1.0.3)
-      activesupport (>= 4.2.0.alpha)
-    rails-dom-testing (1.0.7)
-      activesupport (>= 4.2.0.beta, < 5.0)
+      railties (= 5.0.0.1)
+      sprockets-rails (>= 2.0.0)
+    rails-dom-testing (2.0.1)
+      activesupport (>= 4.2.0, < 6.0)
       nokogiri (~> 1.6.0)
-      rails-deprecated_sanitizer (>= 1.0.1)
     rails-html-sanitizer (1.0.3)
       loofah (~> 2.0)
-    railties (4.2.7.1)
-      actionpack (= 4.2.7.1)
-      activesupport (= 4.2.7.1)
+    railties (5.0.0.1)
+      actionpack (= 5.0.0.1)
+      activesupport (= 5.0.0.1)
+      method_source
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
     rainbow (2.1.0)
@@ -173,6 +174,9 @@ GEM
     tzinfo (1.2.2)
       thread_safe (~> 0.1)
     unicode-display_width (1.1.1)
+    websocket-driver (0.6.4)
+      websocket-extensions (>= 0.1.0)
+    websocket-extensions (0.1.2)
     with_advisory_lock (3.0.0)
       activerecord (>= 3.2)
       thread_safe
@@ -182,13 +186,13 @@ PLATFORMS
 
 DEPENDENCIES
   bundler (~> 1.12)
-  codeclimate-test-reporter
+  codeclimate-test-reporter (= 1.0.0)
   database_cleaner (= 1.5.3)
   factory_girl_rails (= 4.7.0)
   ffaker (= 2.2.0)
   monarchy!
   pry-rails (= 0.3.4)
-  rails (= 4.2.7.1)
+  rails (= 5.0.0.1)
   rake (~> 11.3)
   rspec (= 3.5.0)
   rspec-rails (= 3.5.2)

dummy/config/application.rb

@@ -18,8 +18,5 @@ class Application < Rails::Application
     # The default locale is :en and all translations from config/locales/*.rb,yml are auto loaded.
     # config.i18n.load_path += Dir[Rails.root.join('my', 'locales', '*.{rb,yml}').to_s]
     # config.i18n.default_locale = :de
-
-    # Do not swallow errors in after_commit/after_rollback callbacks.
-    config.active_record.raise_in_transactional_callbacks = true
   end
 end

dummy/config/environments/production.rb

@@ -23,7 +23,7 @@
 
   # Disable serving static files from the `/public` folder by default since
   # Apache or NGINX already handles this.
-  config.serve_static_files = ENV['RAILS_SERVE_STATIC_FILES'].present?
+  config.public_file_server.enabled = ENV['RAILS_SERVE_STATIC_FILES'].present?
 
   # Compress JavaScripts and CSS.
   config.assets.js_compressor = :uglifier

dummy/config/environments/test.rb

@@ -14,8 +14,8 @@
   config.eager_load = false
 
   # Configure static file server for tests with Cache-Control for performance.
-  config.serve_static_files   = true
-  config.static_cache_control = 'public, max-age=3600'
+  config.public_file_server.enabled   = true
+  config.public_file_server.headers = { 'Cache-Control' => 'public, max-age=3600' }
 
   # Show full error reports and disable caching.
   config.consider_all_requests_local       = true

spec/spec_helper.rb

@@ -1,9 +1,6 @@
 # frozen_string_literal: true
-require 'codeclimate-test-reporter'
 require 'support/helpers/is_expected_block'
 
-CodeClimate::TestReporter.start
-
 # 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