Configure specs

Gemfile

@@ -98,4 +98,7 @@ group :test do
   # Code coverage for Ruby 1.9+ with a powerful configuration library
   # and automatic merging of coverage across test suites.
   gem 'simplecov', '~> 0.16', require: false
+
+  # Simple one-liner tests for common Rails functionality.
+  gem 'shoulda-matchers', '4.0.0.rc1'
 end

Gemfile.lock

@@ -188,6 +188,8 @@ GEM
     sassc (2.0.0)
       ffi (~> 1.9.6)
       rake
+    shoulda-matchers (4.0.0.rc1)
+      activesupport (>= 4.2.0)
     simplecov (0.16.1)
       docile (~> 1.1)
       json (>= 1.8, < 3)
@@ -245,6 +247,7 @@ DEPENDENCIES
   rspec-rails (~> 3.8)
   rubocop (~> 0.60.0)
   sass-rails (~> 5.0)
+  shoulda-matchers (= 4.0.0.rc1)
   simplecov (~> 0.16)
   spring
   spring-watcher-listen (~> 2.0.0)

spec/rails_helper.rb

@@ -29,7 +29,7 @@ require 'rspec/rails'
 # directory. Alternatively, in the individual `*_spec.rb` files, manually
 # require only the support files necessary.
 #
-# Dir[Rails.root.join('spec', 'support', '**', '*.rb')].each { |f| require f }
+Dir[Rails.root.join('spec', 'support', '**', '*.rb')].each { |f| require f }
 
 # Checks for pending migrations and applies them before tests are run.
 # If you are not using ActiveRecord, you can remove these lines.

spec/support/shoulda_matchers.rb

@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+Shoulda::Matchers.configure do |config|
+  config.integrate do |with|
+    with.test_framework :rspec
+    with.library :rails
+  end
+end