Add rspec and request tests

spec/support/controller_macros.rb

@@ -0,0 +1,9 @@
+module ControllerMacros
+  def login_user
+    before(:each) do
+      @request.env["devise.mapping"] = Devise.mappings[:user]
+      user = FactoryBot.create(:user)
+      sign_in user
+    end
+  end
+end

spec/support/devise.rb

@@ -0,0 +1,6 @@
+require_relative './controller_macros'
+
+RSpec.configure do |config|
+  config.include Devise::Test::ControllerHelpers, type: :controller
+  config.extend ControllerMacros, type: :controller
+end