diff --git a/test/serializer_test.rb b/test/serializer_test.rb
index 5c63cf07..cade9c8b 100644
--- a/test/serializer_test.rb
+++ b/test/serializer_test.rb
@@ -1,97 +1,7 @@
 require "test_helper"
+require "test_fakes"
 
 class SerializerTest < ActiveModel::TestCase
-  class Model
-    def initialize(hash={})
-      @attributes = hash
-    end
-
-    def read_attribute_for_serialization(name)
-      @attributes[name]
-    end
-
-    def as_json(*)
-      { :model => "Model" }
-    end
-  end
-
-  class User
-    include ActiveModel::SerializerSupport
-
-    attr_accessor :superuser
-
-    def initialize(hash={})
-      @attributes = hash.merge(:first_name => "Jose", :last_name => "Valim", :password => "oh noes yugive my password")
-    end
-
-    def read_attribute_for_serialization(name)
-      @attributes[name]
-    end
-
-    def super_user?
-      @superuser
-    end
-  end
-
-  class Post < Model
-    def initialize(attributes)
-      super(attributes)
-      self.comments ||= []
-      self.comments_disabled = false
-      self.author = nil
-    end
-
-    attr_accessor :comments, :comments_disabled, :author
-    def active_model_serializer; PostSerializer; end
-  end
-
-  class Comment < Model
-    def active_model_serializer; CommentSerializer; end
-  end
-
-  class UserSerializer < ActiveModel::Serializer
-    attributes :first_name, :last_name
-
-    def serializable_hash
-      attributes.merge(:ok => true).merge(options[:scope])
-    end
-  end
-
-  class DefaultUserSerializer < ActiveModel::Serializer
-    attributes :first_name, :last_name
-  end
-
-  class MyUserSerializer < ActiveModel::Serializer
-    attributes :first_name, :last_name
-
-    def serializable_hash
-      hash = attributes
-      hash = hash.merge(:super_user => true) if my_user.super_user?
-      hash
-    end
-  end
-
-  class CommentSerializer
-    def initialize(comment, options={})
-      @object = comment
-    end
-
-    attr_reader :object
-
-    def serializable_hash
-      { :title => @object.read_attribute_for_serialization(:title) }
-    end
-
-    def as_json(options=nil)
-      options ||= {}
-      if options[:root] == false
-        serializable_hash
-      else
-        { :comment => serializable_hash }
-      end
-    end
-  end
-
   def test_scope_works_correct
     serializer = ActiveModel::Serializer.new :foo, :scope => :bar
     assert_equal serializer.scope, :bar
@@ -161,11 +71,6 @@ class SerializerTest < ActiveModel::TestCase
     }, hash)
   end
 
-  class PostSerializer < ActiveModel::Serializer
-    attributes :title, :body
-    has_many :comments, :serializer => CommentSerializer
-  end
-
   def test_has_many
     user = User.new
 
@@ -187,16 +92,6 @@ class SerializerTest < ActiveModel::TestCase
     }, post_serializer.as_json)
   end
 
-  class PostWithConditionalCommentsSerializer < ActiveModel::Serializer
-    root :post
-    attributes :title, :body
-    has_many :comments, :serializer => CommentSerializer
-
-    def include_associations!
-      include! :comments unless object.comments_disabled
-    end
-  end
-
   def test_conditionally_included_associations
     user = User.new
 
@@ -229,20 +124,6 @@ class SerializerTest < ActiveModel::TestCase
     }, post_serializer.as_json)
   end
 
-  class PostWithMultipleConditionalsSerializer < ActiveModel::Serializer
-    root :post
-    attributes :title, :body, :author
-    has_many :comments, :serializer => CommentSerializer
-
-    def include_comments?
-      !object.comments_disabled
-    end
-
-    def include_author?
-      scope.super_user?
-    end
-  end
-
   def test_conditionally_included_associations_and_attributes
     user = User.new
 
@@ -285,18 +166,6 @@ class SerializerTest < ActiveModel::TestCase
     }, post_serializer.as_json)
   end
 
-  class Blog < Model
-    attr_accessor :author
-  end
-
-  class AuthorSerializer < ActiveModel::Serializer
-    attributes :first_name, :last_name
-  end
-
-  class BlogSerializer < ActiveModel::Serializer
-    has_one :author, :serializer => AuthorSerializer
-  end
-
   def test_has_one
     user = User.new
     blog = Blog.new
@@ -528,10 +397,6 @@ class SerializerTest < ActiveModel::TestCase
     assert_equal({ :items => [ hash.as_json ]}, serializer.as_json)
   end
 
-  class CustomPostSerializer < ActiveModel::Serializer
-    attributes :title
-  end
-
   def test_array_serializer_with_specified_seriailizer
     post1 = Post.new(:title => "Post1", :author => "Author1", :id => 1)
     post2 = Post.new(:title => "Post2", :author => "Author2", :id => 2)
@@ -562,15 +427,6 @@ class SerializerTest < ActiveModel::TestCase
     assert as_json.include?({ :title => "Post2" })
   end
 
-  class CustomBlog < Blog
-    attr_accessor :public_posts, :public_user
-  end
-
-  class CustomBlogSerializer < ActiveModel::Serializer
-    has_many :public_posts, :key => :posts, :serializer => PostSerializer
-    has_one :public_user, :key => :user, :serializer => UserSerializer
-  end
-
   def test_associations_with_as
     posts = [
       Post.new(:title => 'First Post', :body => 'text'), 
@@ -1086,21 +942,6 @@ class SerializerTest < ActiveModel::TestCase
     }, actual)
   end
 
-  # Set up some classes for polymorphic testing
-  class Attachment < Model
-    def attachable
-      @attributes[:attachable]
-    end
-
-    def readable
-      @attributes[:readable]
-    end
-
-    def edible
-      @attributes[:edible]
-    end
-  end
-
   def tests_can_handle_polymorphism
     email_serializer = Class.new(ActiveModel::Serializer) do
       attributes :subject, :body
diff --git a/test/test_fakes.rb b/test/test_fakes.rb
new file mode 100644
index 00000000..c69203bc
--- /dev/null
+++ b/test/test_fakes.rb
@@ -0,0 +1,159 @@
+class Model
+  def initialize(hash={})
+    @attributes = hash
+  end
+
+  def read_attribute_for_serialization(name)
+    @attributes[name]
+  end
+
+  def as_json(*)
+    { :model => "Model" }
+  end
+end
+
+class User
+  include ActiveModel::SerializerSupport
+
+  attr_accessor :superuser
+
+  def initialize(hash={})
+    @attributes = hash.merge(:first_name => "Jose", :last_name => "Valim", :password => "oh noes yugive my password")
+  end
+
+  def read_attribute_for_serialization(name)
+    @attributes[name]
+  end
+
+  def super_user?
+    @superuser
+  end
+end
+
+class Post < Model
+  def initialize(attributes)
+    super(attributes)
+    self.comments ||= []
+    self.comments_disabled = false
+    self.author = nil
+  end
+
+  attr_accessor :comments, :comments_disabled, :author
+  def active_model_serializer; PostSerializer; end
+end
+
+class Comment < Model
+  def active_model_serializer; CommentSerializer; end
+end
+
+class UserSerializer < ActiveModel::Serializer
+  attributes :first_name, :last_name
+
+  def serializable_hash
+    attributes.merge(:ok => true).merge(options[:scope])
+  end
+end
+
+class DefaultUserSerializer < ActiveModel::Serializer
+  attributes :first_name, :last_name
+end
+
+class MyUserSerializer < ActiveModel::Serializer
+  attributes :first_name, :last_name
+
+  def serializable_hash
+    hash = attributes
+    hash = hash.merge(:super_user => true) if my_user.super_user?
+    hash
+  end
+end
+
+class CommentSerializer
+  def initialize(comment, options={})
+    @object = comment
+  end
+
+  attr_reader :object
+
+  def serializable_hash
+    { :title => @object.read_attribute_for_serialization(:title) }
+  end
+
+  def as_json(options=nil)
+    options ||= {}
+    if options[:root] == false
+      serializable_hash
+    else
+      { :comment => serializable_hash }
+    end
+  end
+end
+
+class PostSerializer < ActiveModel::Serializer
+  attributes :title, :body
+  has_many :comments, :serializer => CommentSerializer
+end
+
+class PostWithConditionalCommentsSerializer < ActiveModel::Serializer
+  root :post
+  attributes :title, :body
+  has_many :comments, :serializer => CommentSerializer
+
+  def include_associations!
+    include! :comments unless object.comments_disabled
+  end
+end
+
+class PostWithMultipleConditionalsSerializer < ActiveModel::Serializer
+  root :post
+  attributes :title, :body, :author
+  has_many :comments, :serializer => CommentSerializer
+
+  def include_comments?
+    !object.comments_disabled
+  end
+
+  def include_author?
+    scope.super_user?
+  end
+end
+
+class Blog < Model
+  attr_accessor :author
+end
+
+class AuthorSerializer < ActiveModel::Serializer
+  attributes :first_name, :last_name
+end
+
+class BlogSerializer < ActiveModel::Serializer
+  has_one :author, :serializer => AuthorSerializer
+end
+
+class CustomPostSerializer < ActiveModel::Serializer
+  attributes :title
+end
+
+class CustomBlog < Blog
+  attr_accessor :public_posts, :public_user
+end
+
+class CustomBlogSerializer < ActiveModel::Serializer
+  has_many :public_posts, :key => :posts, :serializer => PostSerializer
+  has_one :public_user, :key => :user, :serializer => UserSerializer
+end
+
+# Set up some classes for polymorphic testing
+class Attachment < Model
+  def attachable
+    @attributes[:attachable]
+  end
+
+  def readable
+    @attributes[:readable]
+  end
+
+  def edible
+    @attributes[:edible]
+  end
+end