title: Fast Tests: How to create instances of classes without using FactoryGirl
body: <p>I'm running rspec tests for a helper class. To speed them up, I want avoid loading FactorGirl and Rails.</p>
  
  <p>My helper class currently instantiates objects from the User Class and Project class using Factory Girl.  For example:</p>
  
  <pre><code>describe '#show_follower_pic(user)' do
    it 'should show the profile pic when the user has one' do
      user = FactoryGirl.create(:user, profile_pic_source: 'facebook',facebook_uid: "22331111", facebook:  {"info"=&gt;{"image"=&gt;"test_image.png"}} )
      show_follower_pic(user).should == "test_image.png" 
    end
  </code></pre>
  
  <p>How do I create fake classes for user and project that are only existant withint the realm of this particular test file (and not the larger test suite)?</p>