Add controllers

app/controllers/customers_controller.rb

@@ -0,0 +1,4 @@
+class CustomersController < ApplicationController
+  def index
+  end
+end

app/controllers/movies_controller.rb

@@ -0,0 +1,10 @@
+class MoviesController < ApplicationController
+  def index
+  end
+
+  def show
+  end
+
+  def create
+  end
+end

config/routes.rb

@@ -1,3 +1,11 @@
 Rails.application.routes.draw do
+  get 'movies/index'
+
+  get 'movies/show'
+
+  get 'movies/create'
+
+  get 'customers/index'
+
   # For details on the DSL available within this file, see http://guides.rubyonrails.org/routing.html
 end

db/migrate/20180507212839_add_customer_id_and_movie_id_to_rentals.rb

@@ -1,5 +1,6 @@
 class AddCustomerIdAndMovieIdToRentals < ActiveRecord::Migration[5.1]
   def change
-
+    add_reference :rentals, :customer, foreign_key: true
+    add_reference :rentals, :movie, foreign_key: true
   end
 end

test/controllers/customers_controller_test.rb

@@ -0,0 +1,9 @@
+require "test_helper"
+
+describe CustomersController do
+  it "should get index" do
+    get customers_index_url
+    value(response).must_be :success?
+  end
+
+end

test/controllers/movies_controller_test.rb

@@ -0,0 +1,19 @@
+require "test_helper"
+
+describe MoviesController do
+  it "should get index" do
+    get movies_index_url
+    value(response).must_be :success?
+  end
+
+  it "should get show" do
+    get movies_show_url
+    value(response).must_be :success?
+  end
+
+  it "should get create" do
+    get movies_create_url
+    value(response).must_be :success?
+  end
+
+end