Capybara solution

Gemfile.lock

@@ -40,10 +40,19 @@ GEM
       rack
     rack-test (0.6.2)
       rack (>= 1.0)
+    rspec (3.1.0)
+      rspec-core (~> 3.1.0)
+      rspec-expectations (~> 3.1.0)
+      rspec-mocks (~> 3.1.0)
+    rspec-core (3.1.7)
+      rspec-support (~> 3.1.0)
     rspec-expectations (3.1.2)
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.1.0)
+    rspec-mocks (3.1.3)
+      rspec-support (~> 3.1.0)
     rspec-support (3.1.2)
+    sass (3.4.22)
     sinatra (1.4.5)
       rack (~> 1.4)
       rack-protection (~> 1.4)
@@ -66,5 +75,10 @@ DEPENDENCIES
   cucumber-sinatra
   haml
   pry
+  rspec
   rspec-expectations
+  sass
   sinatra
+
+BUNDLED WITH
+   1.12.5

app.rb

@@ -31,7 +31,11 @@ def logged_in?
   end
 
   get "/dashboard" do
-    @username = session[:user]
-    haml :dashboard
+    if logged_in? then
+      @username = session[:user]
+      haml :dashboard
+    else
+      redirect to '/'
+    end
   end
 end

features/login.feature

@@ -7,4 +7,4 @@ Feature: Login Page
     Given the login page
     When I log in with proper credentials
     Then I should see the secret page
-    
+

features/logout.feature

@@ -1 +1,12 @@
-#Add your codez here
+Feature: Logout Page
+  In order to lock the page when we are finished
+  As a user
+  I want get redirected back to the login page after logging out
+    and not be able to return to the secret page
+
+  Scenario: Logout User
+    Given I am logged in
+    And I am on my dashboard
+    When I click log out
+    Then I should see the index page
+    And I should not have access to the secret page

features/step_definitions/login_steps.rb

@@ -1,14 +1,14 @@
 Given(/^the login page$/) do
-  #put your code here
-  pending
+  visit('/')
 end
 
 When(/^I log in with proper credentials$/) do
-  #put your code here
-  pending
+  fill_in 'username', :with => 'my_user'
+  fill_in 'password', :with => 'my_user'
+  click_button 'Login'
 end
 
 Then(/^I should see the secret page$/) do
-  #put your code here
-  pending
+  expect(page).to have_content 'This is the secret page.'
+  expect(page).to have_content 'Your username is my_user'
 end

features/step_definitions/logout_steps.rb

@@ -1 +1,26 @@
-#Add your codez here
+Given /^I am logged in$/ do
+  visit '/'
+  fill_in 'username', :with => 'Me'
+  fill_in 'password', :with => 'Me'
+  click_button 'Login'
+end
+
+Given /^I am on my dashboard$/ do
+  visit '/dashboard'
+end
+
+When /^I click log out$/ do
+  visit '/logout'
+end
+
+Then /^I should see the index page$/ do
+  expect(page).to have_content 'This is login page for users.'
+end
+
+Then /^I should not have access to the secret page$/ do
+  visit '/dashboard'
+
+  expect(page).to have_content 'This is login page for users.'
+  expect(current_path).to eq '/'
+end
+