test expired snippets

app/models/snippet.rb

@@ -53,5 +53,6 @@ end
 #  created_at :datetime
 #  updated_at :datetime
 #  file_name  :string(255)
+#  expires_at :datetime
 #
 

app/views/snippets/show.html.haml

@@ -23,4 +23,4 @@
 
 - else
   %h2
-    Sorry, this snipped is no longer exists
+    Sorry, this snippet is no longer exists

spec/models/snippet_spec.rb

@@ -26,5 +26,6 @@ end
 #  created_at :datetime
 #  updated_at :datetime
 #  file_name  :string(255)
+#  expires_at :datetime
 #
 

spec/requests/snippets_spec.rb

@@ -23,6 +23,14 @@ describe "Snippets" do
     it { should have_content(@snippet.project.name) }
     it { should have_content(@snippet.author.name) }
 
+    it "doesn't show expired snippets" do
+      @snippet.update_attribute(:expires_at, 1.day.ago.to_time)
+      visit project_snippet_path(project, @snippet)
+      page.should have_content("Sorry, this snippet is no longer exists")
+      page.should_not have_content(@snippet.title)
+      page.should_not have_content(@snippet.content)
+    end
+
     describe "Destroy" do
       before do
         # admin access to remove snippet