TodoList does not have a user_id foreign key

  1) User relationships should have many todo_lists
     Failure/Error: it { should have_many(:todo_lists) }
       Expected User to have a has_many association called todo_lists         (TodoList does not have a user_id foreign key.)
     # ./spec/models/user_spec.rb:15:in `block (3 levels) in <top   (required)>'

require 'spec_helper'

describe User do
let(:valid_attributes) {
    {
        first_name: "Louis",
        last_name: "Magnotti",
        email: "lamagnotti@yahoo.com",
        password: "treehouse1234",
        password_confirmation: "treehouse1234"
    }
}

context "relationships" do
it { should have_many(:todo_lists) }
  end

context "validations" do
    let(:user) { User.new(valid_attributes) }

    before do
        User.create(valid_attributes)
    end

    it "requires an email" do
        expect(user).to validate_presence_of(:email)
    end

    it "requires a unique email" do
        expect(user).to validate_uniqueness_of(:email)
    end

    it "requires a unique email (case insensitive)" do
        user.email = "LAMAGNOTTI@YAHOO.COM"
        expect(user).to validate_uniqueness_of(:email)
    end

    it "requires the email address to look like an email" do
        user.email = "louis"
        expect(user).to_not be_valid
    end

end

    describe "#downcase_email" do
    it "makes the email attribute lower case" do
        user = User.new(valid_attributes.merge(email:   "LAMAGNOTTI@YAHOO.COM"))
        expect{ user.downcase_email }.to change{ user.email }.
            from("LAMAGNOTTI@YAHOO.COM").
            to("lamagnotti@yahoo.com")
    end

    it "downcases an email before saving" do
      user = User.new(valid_attributes)
      user.email = "LAMAGNOTTI@YAHOO.COM"
      expect(user.save).to be_truthy
      expect(user.email).to eq("lamagnotti@yahoo.com")
        end
    end
end

class User < ActiveRecord::Base
  has_secure_password

  has_many :todo_lists

  validates :email, presence: true,
                uniqueness: true,
                format: {
                  with: /\A[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]+\z/
                }

  before_save :downcase_email

  def downcase_email
    self.email = email.downcase
  end
end

class TodoList < ActiveRecord::Base
  belongs_to :user
  has_many :todo_items

  validates :title, presence: true
  validates :title, length: { minimum: 3 }
  validates :description, presence: true
  validates :description, length: { minimum: 5 }

  def has_completed_items?
    todo_items.complete.size > 0
  end

  def has_incomplete_items?
    todo_items.incomplete.size > 0
  end 

ActiveRecord::Schema.define(version: 20140902185757) do

  create_table "todo_items", force: true do |t|
    t.integer  "todo_list_id"
    t.string   "content"
    t.datetime "created_at"
    t.datetime "updated_at"
    t.datetime "completed_at"
  end

   add_index "todo_items", ["todo_list_id"], name: "index_todo_items_on_todo_list_id"

 create_table "todo_lists", force: true do |t|
    t.string   "title"
    t.text     "description"
    t.datetime "created_at"
    t.datetime "updated_at"
  end

  create_table "users", force: true do |t|
    t.string   "first_name"
    t.string   "last_name"
    t.string   "email"
    t.string   "password_digest"
    t.datetime "created_at"
    t.datetime "updated_at"
  end

   add_index "users", ["email"], name: "index_users_on_email"

end