Rspec Scripts

Rspec::
rspec
rspec spec/models
rspec spec/controllers/accounts_controller_spec.rb
rails generate rspec:model
/factories /support /models /controllers /features /views /mailers /routing /helpers

Model spec - behavior of model
require "rails_helper"

RSpec.describe User, :type => :model do
  it "orders by last name" do
    lindeman = User.create!(first_name: "Andy", last_name: "Lindeman")
    chelimsky = User.create!(first_name: "David", last_name: "Chelimsky")

    expect(User.ordered_by_last_name).to eq([chelimsky, lindeman])
  end
end

Controller spec - behavior of controller
require "rails_helper"

RSpec.describe PostsController, :type => :controller do
  describe "GET #index" do
    it "responds successfully with an HTTP 200 status code" do
      get :index
      expect(response).to be_success
      expect(response).to have_http_status(200)
    end

    it "renders the index template" do
      get :index
      expect(response).to render_template("index")
    end

    it "loads all of the posts into @posts" do
      post1, post2 = Post.create!(title: 'one'), Post.create!(title: 'two')
      get :index

      expect(assigns(:posts)).to match_array([post1, post2])
    end
  end
end

Request spec - behavior of request/response. folders: /api, /integrations, /requests
require 'rails_helper'

RSpec.describe "home page", :type => :request do
  it "displays the user's username after successful login" do
    user = User.create!(:username => "jdoe", :password => "secret")
    get "/login"
    assert_select "form.login" do
      assert_select "input[name=?]", "username"
      assert_select "input[name=?]", "password"
      assert_select "input[type=?]", "submit"
    end

    post "/login", :username => "jdoe", :password => "secret"
    assert_select ".header .username", :text => "jdoe"
  end
end

factorygirl & capybara version:
require 'rails_helper'

RSpec.describe "home page", :type => :request do
  it "displays the user's username after successful login" do
    user = FactoryGirl.create(:user, :username => "jdoe", :password => "secret")
    visit "/login"
    fill_in "Username", :with => "jdoe"
    fill_in "Password", :with => "secret"
    click_button "Log in"

    expect(page).to have_selector(".header .username", :text => "jdoe")
  end
end

Feature spec - tests with simulating browser (Capybara)
require 'rails_helper'

describe 'Admin Login', type: :feature do
	let!(:admin_user) { FactoryGirl.create(:admin_user, email: '[email protected]', password: 'password', password_confirmation: 'password') }
		it 'signs in the admin', js:true do
      visit '/administration/admin/login'
			fill_in 'admin_user_email', with: '[email protected]'
			fill_in 'admin_user_password', with: 'password'
			click_button 'Login'	
      expect(page).to have_content 'Dashboard'
		end
end

mailer spec - testing mail behavior 
require "rails_helper"

RSpec.describe Notifications, :type => :mailer do
  describe "notify" do
    let(:mail) { Notifications.signup }

    it "renders the headers" do
      expect(mail.subject).to eq("Signup")
      expect(mail.to).to eq(["[email protected]"])
      expect(mail.from).to eq(["[email protected]"])
    end

    it "renders the body" do
      expect(mail.body.encoded).to match("Hi")
    end
  end
end

view spec - testing view 
require 'rails_helper'

RSpec.describe "events/show", :type => :view do
  it "displays the event location" do
    assign(:event, Event.new(:location => "Chicago"))
    render
    expect(rendered).to include("Chicago")
  end
end

Routing spec - Route testing
require 'rails_helper'

RSpec.describe "routing to profiles", :type => :routing do
  it "routes /profile/:username to profile#show for username" do
    expect(:get => "/profiles/jsmith").to route_to(
      :controller => "profiles",
      :action => "show",
      :username => "jsmith"
    )
  end

  it "does not expose a list of profiles" do
    expect(:get => "/profiles").not_to be_routable
  end
end

Helper spec - helper testing
require 'rails_helper'

RSpec.describe EventsHelper, :type => :helper do
  describe "#link_to_event" do
    it "displays the title, and formatted date" do
      event = Event.new("Ruby Kaigi", Date.new(2010, 8, 27))
      # helper is an instance of ActionView::Base configured with the
      # EventsHelper and all of Rails' built-in helpers
      expect(helper.link_to_event).to match /Ruby Kaigi, 27 Aug, 2010/
    end
  end
end

Matchers
be_a_new expect(object).to be_a_new(Widget) =>controller
render_template expect(response).to render_template("new") =>request,controller,view
route_to expect(:get => "/widgets").to route_to(:controller => "widgets", :action => "index") =>controller, route
be_routable expect(:get => "/widgets/1/edit").not_to be_routable =>route
have_http_status expect(response).to have_http_status(201) =>controller,feature,request

describe, it, context, example
describe StringCalculator do

  describe ".add" do
    context "given an empty string" do
      it "returns zero" do
        expect(StringCalculator.add("")).to eql(0)
      end
    end
  end

end
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