Refactored the rails app setups into a combined step.

features/basic.feature

 Feature: Running paperclip in a Rails app
 
   Scenario: Basic utilization
-    Given I generate a rails application
-    And I have a "users" resource with "name:string"
-    And I run "script/generate paperclip user avatar"
+    Given I have a rails application
     And I save the following as "app/models/user.rb"
     """
     class User < ActiveRecord::Base
       has_attached_file :avatar
     end
     """
-    And I save the following as "app/views/users/new.html.erb"
-    """
-    <% form_for @user, :html => { :multipart => true } do |f| %>
-      <%= f.text_field :name %>
-      <%= f.file_field :avatar %>
-      <%= submit_tag "Submit" %>
-    <% end %>
-    """
-    And I save the following as "app/views/users/show.html.erb"
-    """
-    <p>Name: <%= @user.name %></p>
-    <p>Avatar: <%= image_tag @user.avatar.url %></p>
-    """
-    And this plugin is available
-    And the rails application is prepped and running
     When I visit /users/new
     And I fill in "user_name" with "something"
     And I attach the file "test/fixtures/5k.png" to "user_avatar"

features/s3.feature

 Feature: Running paperclip in a Rails app using basic S3 support
 
   Scenario: Basic utilization
-    Given I generate a rails application
-    And I have a "users" resource with "name:string"
-    And I run "script/generate paperclip user avatar"
+    Given I have a rails application
     And I save the following as "app/models/user.rb"
     """
     class User < ActiveRecord::Base
     has_attached_file :avatar,
                       :storage => :s3,
-                      :bucket => "jyurek",
-                      :s3_credentials => "config/s3.yml"
+                      :s3_credentials => Rails.root.join("config/s3.yml")
     end
     """
-    And I save the following as "config/s3.yml"
-    """
-    access_key_id: <%= ENV['AWS_ACCESS_KEY_ID'] %>
-    secret_access_key: <%= ENV['AWS_SECRET_ACCESS_KEY'] %>
-    bucket: paperclip
-    """
-    And I save the following as "app/views/users/new.html.erb"
-    """
-    <% form_for @user, :html => { :multipart => true } do |f| %>
-      <%= f.text_field :name %>
-      <%= f.file_field :avatar %>
-      <%= submit_tag "Submit" %>
-    <% end %>
-    """
-    And I save the following as "app/views/users/show.html.erb"
-    """
-    <p>Name: <%= @user.name %></p>
-    <p>Avatar: <%= image_tag @user.avatar.url %></p>
-    """
-    And this plugin is available
-    And the rails application is prepped and running
     When I visit /users/new
     And I fill in "user_name" with "something"
     And I attach the file "test/fixtures/5k.png" to "user_avatar"
     And I press "Submit"
     Then I should see "Name: something"
-    And I should see an image with a path of "http://paperclip.s3.amazonaws.com/system/avatars/1/original/5k.png"
-    And the file at "http://paperclip.s3.amazonaws.com/system/avatars/1/original/5k.png" is the same as "test/fixtures/5k.png"
+    And I should see an image with a path of "http://s3.amazonaws.com/paperclip/system/avatars/1/original/5k.png"
+    And the file at "http://s3.amazonaws.com/paperclip/system/avatars/1/original/5k.png" is the same as "test/fixtures/5k.png"

features/step_definitions/html_steps.rb

@@ -3,6 +3,12 @@ Then %r{I should see an image with a path of "([^"]*)"} do |path|
 end
 
 Then %r{^the file at "([^"]*)" is the same as "([^"]*)"$} do |web_file, path|
-  visit(web_file)
-  page.body.should == IO.read(path)
+  expected = IO.read(path)
+  actual = if web_file.match %r{^https?://}
+    Net::HTTP.get(URI.parse(web_file))
+  else
+    visit(web_file)
+    page.body
+  end
+  actual.should == expected
 end

features/step_definitions/rails_steps.rb

+Given "I have a rails application" do
+  steps %{
+    Given I generate a rails application
+    And I have a "users" resource with "name:string"
+    And I turn off class caching
+    And I run "script/generate paperclip user avatar"
+    Given I save the following as "app/models/user.rb"
+    """
+    class User < ActiveRecord::Base
+    end
+    """
+    And I save the following as "config/s3.yml"
+    """
+    access_key_id: <%= ENV['AWS_ACCESS_KEY_ID'] %>
+    secret_access_key: <%= ENV['AWS_SECRET_ACCESS_KEY'] %>
+    bucket: paperclip
+    """
+    And I save the following as "app/views/users/new.html.erb"
+    """
+    <% form_for @user, :html => { :multipart => true } do |f| %>
+      <%= f.text_field :name %>
+      <%= f.file_field :avatar %>
+      <%= submit_tag "Submit" %>
+    <% end %>
+    """
+    And I save the following as "app/views/users/show.html.erb"
+    """
+    <p>Name: <%= @user.name %></p>
+    <p>Avatar: <%= image_tag @user.avatar.url %></p>
+    """
+    And this plugin is available
+    And the rails application is prepped and running
+  }
+end
+
 Given %r{I generate a rails application} do
   FileUtils.rm_rf TEMP_ROOT
   FileUtils.mkdir_p TEMP_ROOT
   Dir.chdir(TEMP_ROOT) do
     `rails _2.3.8_ #{APP_NAME}`
   end
-  ENV['RAILS_ENV'] = 'test'
 end
 
 When %r{I save the following as "([^"]*)"} do |path, string|
@@ -12,13 +46,23 @@ When %r{I save the following as "([^"]*)"} do |path, string|
   File.open(File.join(CUC_RAILS_ROOT, path), 'w') { |file| file.write(string) }
 end
 
+When %r{I turn off class caching} do
+  Dir.chdir(CUC_RAILS_ROOT) do
+    file = "config/environments/test.rb"
+    config = IO.read(file)
+    config.gsub!(%r{^\s*config.cache_classes.*$},
+                 "config.cache_classes = false")
+    File.open(file, "w"){|f| f.write(config) }
+  end
+end
+
 When %r{the rails application is prepped and running$} do
-  When "the rails application is prepped"
+  When "I reset the database"
   When "the rails application is running"
 end
 
-When %r{the rails application is prepped$} do
-  When %{I run "rake db:create db:migrate"}
+When %r{I reset the database} do
+  When %{I run "rake db:drop db:create db:migrate"}
 end
 
 When %r{the rails application is running} do

features/support/rails.rb

@@ -2,7 +2,4 @@ PROJECT_ROOT     = File.expand_path(File.join(File.dirname(__FILE__), '..', '..'
 TEMP_ROOT        = File.join(PROJECT_ROOT, 'tmp').freeze
 APP_NAME         = 'testapp'.freeze
 CUC_RAILS_ROOT   = File.join(TEMP_ROOT, APP_NAME).freeze
-
-Before do
-  Dir.chdir(PROJECT_ROOT)
-end
+ENV['RAILS_ENV'] = 'test'

lib/paperclip/storage.rb

@@ -143,7 +143,10 @@ module Paperclip
           @s3_protocol    = @options[:s3_protocol]    || (@s3_permissions == :public_read ? 'http' : 'https')
           @s3_headers     = @options[:s3_headers]     || {}
           @s3_host_alias  = @options[:s3_host_alias]
-          @url            = ":s3_path_url" unless @url.to_s.match(/^:s3.*url$/)
+          unless @url.to_s.match(/^:s3.*url$/)
+            @path         = @url
+            @url          = ":s3_path_url"
+          end
           AWS::S3::Base.establish_connection!( @s3_options.merge(
             :access_key_id => @s3_credentials[:access_key_id],
             :secret_access_key => @s3_credentials[:secret_access_key]