Use factory_girl_rails for factories

Gemfile

@@ -11,4 +11,5 @@ group :development, :test do
   gem 'cucumber-rails'
   gem 'capybara'
   gem 'database_cleaner'
+  gem 'factory_girl_rails'
 end

Gemfile.lock

@@ -53,6 +53,10 @@ GEM
     diff-lcs (1.1.2)
     erubis (2.6.6)
       abstract (>= 1.0.0)
+    factory_girl (2.0.1)
+    factory_girl_rails (1.1.0)
+      factory_girl (~> 2.0.0)
+      railties (>= 3.0.0)
     ffi (1.0.9)
     gherkin (2.4.1)
       json (>= 1.4.6)
@@ -124,6 +128,7 @@ DEPENDENCIES
   capybara
   cucumber-rails
   database_cleaner
+  factory_girl_rails
   haml
   rails (= 3.0.9)
   rspec-rails

app/controllers/playlists_controller.rb

@@ -8,7 +8,7 @@ class PlaylistsController < ApplicationController
   end
 
   def create
-    @playlist = Playlist.new params[:playlist]
+    @playlist = Playlist.new(:name => params[:playlist][:name])
     if @playlist.save
       redirect_to :action => 'index'
     else

spec/controllers/playlists_controller_spec.rb

@@ -1,15 +1,9 @@
 require 'spec_helper'
 
 describe PlaylistsController do
-  def valid_attributes
-    {
-      :name => 'Electro'
-    }
-  end
-
   describe 'GET index' do
     it 'assigns all playlists as @playlists' do
-      playlist = Playlist.create! valid_attributes
+      playlist = Factory.create(:playlist)
       get :index
       assigns[:playlists].should == [playlist]
     end
@@ -24,7 +18,7 @@ describe PlaylistsController do
 
   describe 'GET edit' do
     it 'assigns the requested playlist as @playlist' do
-      playlist = Playlist.create! valid_attributes
+      playlist = Factory.create(:playlist)
       get :edit, :id => playlist.id.to_s
       assigns[:playlist].should == playlist
     end
@@ -32,26 +26,23 @@ describe PlaylistsController do
 
   describe 'POST create' do
     let(:playlist) { mock_model(Playlist).as_null_object }
-
-    before do
-      Playlist.stub(:new).and_return(playlist)
-    end
+    before { Playlist.stub(:new).and_return(playlist) }
 
     it 'creates a new playlist' do
       Playlist.should_receive(:new).
-        with('name' => 'Electro').
+        with(Factory.attributes_for(:playlist)).
         and_return(playlist)
-      post :create, :playlist => { 'name' => 'Electro' }
+      post :create, :playlist => Factory.attributes_for(:playlist)
     end
 
     it 'saves the playlist' do
       playlist.should_receive(:save)
-      post :create
+      post :create, :playlist => {}
     end
 
     context 'when the playlist saves successfully' do
       it 'redirects to the playlists index' do
-        post :create
+        post :create, :playlist => {}
         response.should redirect_to(:action => 'index')
       end
     end
@@ -62,12 +53,12 @@ describe PlaylistsController do
       end
 
       it 'assigns the playlist as @playlist' do
-        post :create
+        post :create, :playlist => {}
         assigns[:playlist].should eq(playlist)
       end
 
       it 'renders the new template' do
-        post :create
+        post :create, :playlist => {}
         response.should render_template('new')
       end
     end
@@ -75,22 +66,22 @@ describe PlaylistsController do
 
   describe 'PUT update' do
     it 'updates the playlist' do
-      playlist = Playlist.create! valid_attributes
+      playlist = Factory.create(:playlist)
       Playlist.any_instance.should_receive(:update_attributes).
         with({'name' => 'Rock'})
       put :update, :id => playlist.id.to_s, :playlist => {:name => 'Rock'}
     end
 
     it 'assigns the requested playlist as @playlist' do
-      playlist = Playlist.create! valid_attributes
+      playlist = Factory.create(:playlist)
       put :update, :id => playlist.id.to_s, :playlist => {:name => 'Rock'}
       assigns[:playlist].should == playlist
     end
 
     context 'when the playlist updates successfully' do
       it 'redirects to the playlists index' do
-        playlist = Playlist.create! valid_attributes
-        put :update, :id => playlist.id.to_s, :playlist => valid_attributes
+        playlist = Factory.create(:playlist)
+        put :update, :id => playlist.id.to_s, :playlist => Factory.attributes_for(:playlist)
         response.should redirect_to(:action => 'index')
       end
     end

spec/controllers/tracks_controller_spec.rb

@@ -1,15 +1,9 @@
 require 'spec_helper'
 
 describe TracksController do
-  def valid_attributes
-    {
-      :name => 'Mega song'
-    }
-  end
-
   describe 'GET show' do
     it 'assigns the requested track as @track' do
-      track = Track.create! valid_attributes
+      track = Factory.create(:track)
       get :show, :id => track.id.to_s
       assigns[:track].should == track
     end
@@ -28,9 +22,9 @@ describe TracksController do
 
     it 'creates a new track' do
       Track.should_receive(:new).
-        with(:name => 'Mega song').
+        with(Factory.attributes_for(:track)).
         and_return(track)
-      post :create, :track => valid_attributes
+      post :create, :track => Factory.attributes_for(:track)
     end
 
     it 'saves the track' do
@@ -46,7 +40,7 @@ describe TracksController do
 
     context 'when the track saves successfully' do
       it 'redirects to the track page' do
-        post :create, :track => valid_attributes
+        post :create, :track => Factory.attributes_for(:track)
         response.should redirect_to(track)
       end
     end

spec/factories.rb

@@ -0,0 +1,9 @@
+FactoryGirl.define do
+  factory :playlist do
+    name 'Electro'
+  end
+
+  factory :track do
+    name 'Mega song'
+  end
+end

spec/models/playlist_spec.rb

@@ -2,7 +2,7 @@ require 'spec_helper'
 
 describe Playlist do
   subject { playlist }
-  let(:playlist) { Playlist.new :name => 'Electro' }
+  let(:playlist) { FactoryGirl.build(:playlist) }
 
   context 'with valid attributes' do
     it { should be_valid }

spec/models/track_spec.rb

@@ -2,7 +2,7 @@ require 'spec_helper'
 
 describe Track do
   subject { track }
-  let(:track) { Track.new :name => 'Mega song' }
+  let(:track) { FactoryGirl.build(:track) }
 
   context 'with valid attributes' do
     it { should be_valid }