add spring to decrease test startup time

Gemfile

@@ -239,10 +239,13 @@ group :ldap do
 end
 
 group :development do
-  gem 'letter_opener'
   gem 'faker'
+  gem 'letter_opener'
   gem 'livingstyleguide', '~> 2.0.1'
 
+  gem 'spring'
+  gem 'spring-commands-rspec'
+
   gem 'rubocop'
 end
 

Gemfile.lock

@@ -749,6 +749,10 @@ GEM
     simplecov-html (0.10.2)
     spreadsheet (0.8.9)
       ruby-ole (>= 1.0)
+    spring (2.0.2)
+      activesupport (>= 4.2)
+    spring-commands-rspec (1.0.4)
+      spring (>= 0.9.1)
     sprockets (3.7.2)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
@@ -956,6 +960,8 @@ DEPENDENCIES
   shoulda-context (~> 1.2)
   shoulda-matchers (~> 3.1)
   simplecov (~> 0.16.0)
+  spring
+  spring-commands-rspec
   sprockets (~> 3.7.0)
   sqlite3
   stackprof
@@ -979,4 +985,4 @@ RUBY VERSION
    ruby 2.5.1p57
 
 BUNDLED WITH
-   1.17.1
+   1.17.3

bin/rails

@@ -1,4 +1,9 @@
 #!/usr/bin/env ruby
+begin
+  load File.expand_path('../spring', __FILE__)
+rescue LoadError => e
+  raise unless e.message.include?('spring')
+end
 APP_PATH = File.expand_path('../config/application', __dir__)
 require_relative '../config/boot'
 require 'rails/commands'

bin/rake

@@ -1,4 +1,9 @@
 #!/usr/bin/env ruby
+begin
+  load File.expand_path('../spring', __FILE__)
+rescue LoadError => e
+  raise unless e.message.include?('spring')
+end
 require_relative '../config/boot'
 require 'rake'
 Rake.application.run

bin/rspec

@@ -0,0 +1,34 @@
+#!/usr/bin/env ruby
+begin
+  load File.expand_path('../spring', __FILE__)
+rescue LoadError => e
+  raise unless e.message.include?('spring')
+end
+# frozen_string_literal: true
+
+#
+# This file was generated by Bundler.
+#
+# The application 'rspec' is installed as part of a gem, and
+# this file is here to facilitate running it.
+#
+
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+  Pathname.new(__FILE__).realpath)
+
+bundle_binstub = File.expand_path("../bundle", __FILE__)
+
+if File.file?(bundle_binstub)
+  if File.read(bundle_binstub, 300) =~ /This file was generated by Bundler/
+    load(bundle_binstub)
+  else
+    abort("Your `bin/bundle` was not generated by Bundler, so this binstub cannot run.
+Replace `bin/bundle` by running `bundle binstubs bundler --force`, then run this command again.")
+  end
+end
+
+require "rubygems"
+require "bundler/setup"
+
+load Gem.bin_path("rspec-core", "rspec")

bin/spring

@@ -0,0 +1,17 @@
+#!/usr/bin/env ruby
+
+# This file loads spring without using Bundler, in order to be fast.
+# It gets overwritten when you run the `spring binstub` command.
+
+unless defined?(Spring)
+  require 'rubygems'
+  require 'bundler'
+
+  lockfile = Bundler::LockfileParser.new(Bundler.default_lockfile.read)
+  spring = lockfile.specs.detect { |spec| spec.name == "spring" }
+  if spring
+    Gem.use_paths Gem.dir, Bundler.bundle_path.to_s, *Gem.path
+    gem 'spring', spring.version
+    require 'spring/binstub'
+  end
+end