have to explicitly require factory girl

features/support/factories/blog_categories.rb

@@ -1,3 +1,5 @@
+require 'factory_girl'
+
 Factory.define(:blog_category) do |f|
   f.sequence(:title) { |n| "Shopping #{n}" }
 end

features/support/factories/blog_comments.rb

@@ -1,10 +1,8 @@
-Factory.sequence :email do |n|
-  "person#{n}@example.com"
-end
+require 'factory_girl'
 
 Factory.define(:blog_comment) do |f|
   f.name "Joe Commenter"
-  f.email { Factory.next(:email) }
+  f.sequence(:email) { |n| "person#{n}@example.com" }
   f.body "Which one is the best for picking up new shoes?"
   f.association :post
 end

features/support/factories/blog_posts.rb

@@ -1,3 +1,5 @@
+require 'factory_girl'
+
 Factory.define(:post, :class => BlogPost) do |f|
   f.sequence(:title) { |n| "Top #{n} Shopping Centers in Chicago" }
   f.body "These are the top ten shopping centers in Chicago. You're going to read a long blog post about them. Come to peace with it."