Introduction to RSpec feature specs

admin_creates_product_2_spec.rb

require 'rails_helper'
 
feature 'Admin creates product' do
  ...

  scenario 'with invalid input' do
    visit admin_products_path
    click_link 'New Product'
    click_button 'Create Product'
    expect(page).to have_content 'There was an error creating the product'
  end
end

admin_creates_product_spec.rb

require 'rails_helper'
 
feature 'Admin creates product' do
  given!(:product) { Product.new(title: 'Widget X', description: 'This is a description.', price: 12.99, shipping_price: 2.95) }
 
  scenario 'with valid input' do
    visit admin_products_path
    click_link 'New Product'
    fill_in 'Title', with: product.title
    fill_in 'Description', with: product.description
    fill_in 'Price', with: product.price
    fill_in 'Shipping price', with: product.shipping_price
    click_button 'Create Product'
    expect(page).to have_content 'The product was created successfully'
  end
end

admin_deletes_product_spec.rb

require 'rails_helper'
 
feature 'Admin deletes product' do
  given!(:product) { Product.create!(title: 'Widget X', description: 'This is a description.', price: 12.99, shipping_price: 2.95) }
 
  scenario do
    visit admin_products_path
    click_link 'Delete'
    expect(page).to have_content 'The product was deleted successfully'
    expect(page).to_not have_content product.title
  end
end

admin_updates_product_spec.rb

require 'rails_helper'
 
feature 'Admin updates product' do
  given!(:product)    { Product.create!(title: 'Widget X', description: 'This is a description.', price: 12.99, shipping_price: 2.95) }
  given(:new_product) { Product.new(title: 'Widget Y', description: 'This is another description.', price: 24.95, shipping_price: 2.95) {
 
  scenario 'with valid input' do
    visit admin_products_path
    click_link product.title
    fill_in 'Title', with: new_product.title
    fill_in 'Description', with: new_product.description
    fill_in 'Price', with: new_product.price
    fill_in 'Shipping price', with: new_product.shipping_price
    click_button 'Update Product'
    expect(page).to have_content 'The product was updated successfully'
  end
  
  scenario 'with invalid input' do
    visit admin_products_path
    click_link product.title
    fill_in 'Title', with: ''
    fill_in 'Description', with: ''
    fill_in 'Price', with: ''
    fill_in 'Shipping price', with: ''
    click_button 'Update Product'
    expect(page).to have_content 'There was an error updating the product'
  end
end

application.html.erb

<% flash.each do |key, message| %>
  <div id="flash-<%= key %>" class="flash-<%= key %>">
    <%= message %>
  </div>
<% end %>

<%= yield %>

create_method_2.rb

def create
  @product = Product.new(product_params)

  if @product.save
    redirect_to edit_admin_product_path(@product), notice: 'The product was created successfully.'
  else
    flash[:error] = 'There was an error creating the product.'
    render :new
  end
end

create_products.sh

$ rails g model product title:string description:text price_cents:integer shipping_price_cents:integer
$ rake db:migrate

creation_edit.html.erb

<h1>Edit Product</h1>
<%= render 'form' %>

creation_failed.sh

$ rspec
F

Failures:

  1) Admin creates product with valid input
     Failure/Error: expect(page).to have_content 'The product was created successfully'
       expected to find text "The product was created successfully" in "Edit Product * Title * DescriptionThis is a description. Price Shipping price"
     # ./spec/features/products/admin_creates_product_spec.rb:14:in `block (2 levels) in <top (required)>'

Finished in 1.01 seconds (files took 1.4 seconds to load)
1 example, 1 failure

Failed examples:

rspec ./spec/features/products/admin_creates_product_spec.rb:6 # Admin creates product with valid input

creation_form.html.erb

<%= simple_form_for [:admin, @product] do |f| %>
  <%= f.input :title %>
  <%= f.input :description %>
  <%= f.input :price %>
  <%= f.input :shipping_price %>
  <%= f.submit %>
<% end %>

creation_index.html.erb

<h1>Products</h1>

<p><%= link_to 'New Product', new_admin_product_path %></p>

<% if @products.any? %>
  <table>
    <thead>
      <tr>
        <th>Title</th>
        <th>Price</th>
        <th>Shipping</th>
      </tr>
    </thead>
    <tbody>
      <% @products.each do |product| %>
        <tr>
          <td><%= product.title %></td>
          <td><%= number_to_currency product.price %></td>
          <td><%= number_to_currency product.shipping_price %></td>
        </tr>
      <% end %>
    </tbody>
  </table>
<% end %>

creation_new.html.erb

<h1>New Product</h1>
<%= render 'form' %>

creation_passed.sh

$ rspec
.

Finished in 0.11697 seconds (files took 1.4 seconds to load)
1 example, 0 failures

creation_products_controller.rb

class Admin::ProductsController < ApplicationController
  def index
    @products = Product.order(:title)
  end
  
  def new
    @product = Product.new
  end
  
  def create
    @product = Product.new(product_params)
    
    if @product.save
      redirect_to edit_admin_product_path(@product), notice: 'The product was created successfully.'
    end
  end
  
  def edit
    @product = Product.find(params[:id])
  end
  
private

  def product_params
    params.require(:product).permit(:title, :description, :price, :shipping_price)
  end
end

creation_with_invalid_input_passed.sh

$ rspec
..

Finished in 0.15502 seconds (files took 1.43 seconds to load)
2 examples, 0 failures

javascript.rb

scenario 'with JavaScript', js: true do
  visit product_path(product)
  click_link 'View Larger'
  
  within '.modal-window' do
    expect(page).to have_css 'video'
  end
end

product.rb

class Product < ActiveRecord::Base
  # money-rails gem
  monetize :price_cents
  monetize :shipping_price_cents
  
  validates :title, presence: true
  validates :description, presence: true
end

routes.rb

Rails.application.routes.draw do
  namespace :admin do
    resources :products
  end
end

user_resends_unlock_instructions_spec.rb

require 'rails_helper'

feature 'User resends unlock instructions' do
  ... # given! statements to setup data would go here

  scenario 'with valid input' do
    visit admin_root_path
    click_link "Didn't receive unlock instructions?"
    fill_in 'Email', with: user.email
    click_button 'Send Instructions'
    expect(page).to have_content 'You will receive an email with unlock instructions'
    expect(unread_emails_for(user.email).size).to eql 1
    
    open_email user.email
    expect(current_email).to have_subject 'Unlock Instructions'
    expect(current_email).to have_body_text 'Your account has been locked'
    
    click_email_link_matching /#{unlock_path(user.id)}/
    expect(page).to have_content 'Your account has been unlocked successfully'
  end
end

user_signs_in_spec.rb

require 'rails_helper'
 
feature 'User signs in' do
  given!(:user) { FactoryGirl.create(:user) }
 
  scenario 'with valid credentials' do
    visit root_path
    fill_in 'Email', with: user.email
    fill_in 'Password', with: user.password
    check 'Remember me'
    click_button 'Sign in'
    expect(page).to have_content "Welcome back, #{user.first_name}!"
  end
end

within.rb

within '.heading' do
  expect(page).to have_content 'Welcome back'
end