Test "dynamic" page title in a view spec (Rails 4 + RSpec 3) -

i following tutorial rails , rspec have evolved, writing tests.

my goal test when visit page "http://domain.fr/users/1" page title follow format : "#{base_title} | #{@user.name}" base_title constant.

before, saw possible use render_views in controller specs not best way , not exist anymore in rails 4/rspec 3.

my last try :

require 'rails_helper'  describe "users/show.html.erb", type: :view   "should render correct title"     user = factorygirl.create(:user)     assign(:user, user)     render template: "users/show.html.erb", layout: "layouts/application.html.erb"     expect(rendered).to have_selector("title", text: user.name)   end end 

i use helper rendering in application.html.erb : <title><%= title %></title>

here helper :

def title   base_title = "simple app du tutoriel ruby on rails"   @title.nil? ? base_title : "#{base_title} | #{@title}" end 

and show method users_controller.rb :

def show   @user = user.find(params[:id])   @title = @user.name end 

i added resources :users routes.rb file.

the above test fail because constant part of title rendered. thus, think users#show not called , @title not defined don't see how achieve this.

also goal avoid calling assign() each variable in view can become problematic when have lot of variables render.

thanks :)

you forgot assign title:

assign(:user, user) assign(:title, user.name)