appcontrollersdrivers_controller.rb

class DriversController < ApplicationController
  before_filter :authenticate_driver!

  def index
  end

  # GET /drivers/1/edit
  def edit
    @driver = Driver.find params[:id]
  end

  # PUT /drivers/1
  # PUT /drivers/1.json
  def update
    @driver = Driver.find(params[:id])
    respond_to do |format|
      if @driver.update_attributes(params[:driver])
        format.html { redirect_to @driver, notice: 'Driver was successfully updated.' }
        format.json { head :no_content }
      else
        format.html { render action: "edit" }
        format.json { render json: @driver.errors, status: :unprocessable_entity }
      end
    end
  end
end

configroutes.rb

Wwwipomo::Application.routes.draw do
  devise_for :drivers
  resources :drivers, only: [:edit, :update]
#  authenticated :driver do
#    root to: 'drivers/:id#edit'
#  end

  root to: 'home#index', as: 'home'
  get "home/index"
end 

speccontrollersdevise_spec.rb

require 'spec_helper'

describe DeviseController do

  it 'signs up Drivers correctly' do
    visit '/drivers/sign_up'
    p page.html
    fill_in 'Email', with: '[email protected]'
    fill_in 'Password', with: 'correct horse battery staple'
    fill_in 'Password Confirmation', with: 'correct horse battery staple'
    click_button 'Sign up'

  end
end