Signed in users can delete posts

Unable to get the right testing for the confirm dialog box-- may need to
add Selenium to test it?

Should make it so only author can delete her own posts...

app/controllers/posts_controller.rb

@@ -30,6 +30,11 @@ def update
     end
   end
 
+  def destroy
+    @post.destroy
+    redirect_to root_url, :notice => "Your post has been deleted"
+  end
+
   protected
 
   def lookup_post

app/views/posts/_post.html.erb

@@ -1,3 +1,6 @@
 <h1><%= link_to post.title, post %></h1>
 <h4>By: <%= post.author.email %></h4>
+<% if user_signed_in? %>
+  <%= link_to "Delete this post", post, method: :delete, data: { confirm: "Are you sure?" }, title: post.title %>
+<% end %>
 <p><%= post.body %></p>

config/routes.rb

@@ -3,7 +3,7 @@
 
   root to: "posts#index"
 
-  resources :posts, except: [:destroy] do
+  resources :posts do
     resources :comments, only: [:create]
   end
 

features/authors_can_delete_posts.feature

@@ -0,0 +1,25 @@
+Feature: Authors can delete posts
+
+  Scenario: I can delete a post I wrote
+    Given I am signed in as "[email protected]"
+    Given the following posts:
+      | title | body         |
+      | Foo   | Foo Bar      |
+    When I go to the homepage
+    And I click "Delete this post"
+    Then I should see "Your post has been deleted"
+    And I should be on the homepage
+    And I should not see the title "Foo"
+    And I should not see "Foo Bar"
+
+  Scenario: I cannot delete posts if I am not signed in
+    Given I am not signed in
+    Given the following posts:
+      | title | body         |
+      | Foo   | Foo Bar      |
+    When I go to the homepage
+    Then I should not see "Delete this post"
+    And I should be on the homepage
+    And I should see the title "Foo"
+    And I should see "Foo Bar"
+

features/step_definitions/authentication_steps.rb

@@ -16,6 +16,10 @@
   sign_in_as @user
 end
 
+Given /^I am not signed in$/ do
+  @user = nil
+end
+
 def sign_in_as user
   steps %Q{
     Given I am on the homepage

features/step_definitions/interaction_steps.rb

@@ -14,6 +14,10 @@
   page.should have_css("h1, h2", text: title_text)
 end
 
+Then /^I should not see the title "(.*?)"$/ do |title_text|
+  page.should_not have_css("h1, h2", text: title_text)
+end
+
 When /^I fill in "(.*?)" for "(.*?)"$/ do |text, field_label|
   page.fill_in field_label, with: text
 end