edit.html.erb

<% provide :title, "Edit user" %> 
<h2>Edit user</h2>

<%= form_for(@user) do |f| %>
  <%= render 'shared/error_messages' %>
  <div class="field">
    <%= f.label :first_name %><br />
    <%= f.text_field :first_name %>
  </div>
  <div class="field">
    <%= f.label :last_name %><br />
    <%= f.text_field :last_name %>
  </div>
  <div class="field">
    <%= f.label :email %><br />
    <%= f.text_field :email %>
  </div>
  <div class="field">
    <%= f.label :password %><br />
    <%= f.password_field :password %>
  </div>
  <div class="field">
    <%= f.label :password_confirmation, "Confirmation" %><br />
    <%= f.password_field :password_confirmation %>
  </div>
  <div class="actions">
    <%= f.submit "Update" %>
  </div>
<% end %>

RSPec output

  1) User pages edit with invalid information 
     Failure/Error: before { click_button "Update" }
     ActionView::MissingTemplate:
       Missing template users/update, application/update with {:locale=>[:en], :formats=>[:html], :handlers=>[:erb, :builder, :coffee]}. Searched in:
         * "/Users/andrew/Sites/www.leobaeck.ca/SignupSystem/app/views"
     # (eval):2:in `click_button'
     # ./spec/requests/user_pages_spec.rb:83:in `block (4 levels) in <top (required)>'

Finished in 1.76 seconds
14 examples, 1 failure

user_pages_spec.rb

require 'spec_helper'

describe "User pages" do
  
  subject { page }
  
  shared_examples_for "all user pages" do
    it { should have_selector('h2',    text: heading) }
    it { should have_selector('title', text: page_title) }
  end
  
  describe "signup page" do
    before { visit signup_path }
    
    let(:heading)     { 'Sign up' }
    let(:page_title)  { 'Sign up' }
    
    it_should_behave_like "all user pages"
  end
  
  describe "profile page" do
    let(:user) { FactoryGirl.create(:user) }
    before { visit user_path(user) }
    
    it { should have_selector('h2', text: user.first_name) }
    it { should have_selector('title', text: user.first_name) }
  end
  
  describe "signup" do
    
    before { visit signup_path }
    
    describe "with invalid information" do
      it "should not create a user" do
        expect { click_button "Sign up" }.not_to change(User, :count)
      end      
    end
  
    describe "with valid information" do
      before do
        fill_in "First name",       with: "Example"
        fill_in "Last name",        with: "User"
        fill_in "Email",            with: "sample@example.com"
        fill_in "Password",         with: "foobar"
        fill_in "Confirmation",     with: "foobar"
      end
      
      describe "after saving the user" do
        before { click_button "Sign up" }
        let(:user) { User.find_by_email('sample@example.com') }
        
        it { should have_selector('title', text: user.first_name) }
        it { should have_selector('div.flash.success', text: 'Welcome') }
        it { should have_link('Sign out') }
      end
      
      it "should create a user" do
        expect { click_button "Sign up" }.to change(User, :count)
      end 
    end
    
    describe "error messages" do
      before { click_button "Sign up" }
      
      let(:error) { 'errors prohibited this user from being saved' }
      it { should have_selector('title', text: 'Sign up') }
      it { should have_content(error) }
    end
    
  end
  
  describe "edit" do
    let(:user) { FactoryGirl.create(:user) }
    before { visit edit_user_path(user) }

    describe "page" do 
      it { should have_selector('h2',    text: "Edit user") }
      it { should have_selector('title', text: "Edit user") }
    end

    describe "with invalid information" do
      let(:error) { '1 error prohibited this user from being saved' }
      before { click_button "Update" }

      it { should have_content(error) }
    end
  end
end

users_controller.rb

class UsersController < ApplicationController
  
  def index
  end
  
  def update
  end
  
  def new
    @user = User.new
  end
  
  def create
    @user = User.new(params[:user])
    if @user.save
      sign_in @user
      flash[:success] = "Welcome to the Sample App!"
      redirect_to @user
    else
      render 'new'
    end
  end
  
  def show
    @user = User.find(params[:id])
  end
  
  def edit
    @user = User.find(params[:id])
  end
end