Remember me enabled by default

app/controllers/auth/sessions_controller.rb

 class Auth::SessionsController < Devise::SessionsController
+  include Devise::Controllers::Rememberable
+
   layout 'auth'
+
+  def create
+    super do |resource|
+      remember_me(resource)
+    end
+  end
 end

app/models/user.rb

@@ -11,8 +11,4 @@ class User < ActiveRecord::Base
   def admin?
     self.admin
   end
-
-  def remember_me
-    (super == nil) ? '1' : super
-  end
 end

spec/controllers/auth/sessions_controller_spec.rb

+require 'rails_helper'
+
+RSpec.describe Auth::SessionsController, type: :controller do
+  describe 'GET #new' do
+    before do
+      request.env["devise.mapping"] = Devise.mappings[:user]
+    end
+
+    it 'returns http success' do
+      get :new
+      expect(response).to have_http_status(:success)
+    end
+  end
+
+  describe 'POST #create' do
+    let(:user) { Fabricate(:user, email: 'foo@bar.com', password: 'abcdefgh') }
+
+    before do
+      request.env["devise.mapping"] = Devise.mappings[:user]
+      post :create, user: { email: user.email, password: user.password }
+    end
+
+    it 'redirects to home page' do
+      expect(response).to redirect_to(root_path)
+    end
+
+    it 'logs the user in' do
+      expect(controller.current_user).to eq user
+    end
+  end
+end