Added new tests for votes and stories

Added unit tests to the Story and Vote model to check the association
between the models. Added functional tests for the Stories and Votes
controller to ensure correct functionality for creating votes and
displaying votes.

test/fixtures/votes.yml

@@ -1,7 +1,7 @@
 # Read about fixtures at http://ar.rubyonrails.org/classes/Fixtures.html
 
-one:
-  story_id: 1
+first:
+  story: one
 
-two:
-  story_id: 1
+second:
+  story: one

test/functional/stories_controller_test.rb

@@ -43,4 +43,18 @@ def test_should_reject_missing_story_attribute_link
     assert_equal 'Story', story.class.to_s
     assert story.errors.on(:link)
   end
+
+  def test_should_show_story
+    get :show, :id => stories(:one)
+    assert_response :success
+    assert_template 'show'
+    assert_equal stories(:one), assigns(:story)
+  end
+
+  def test_should_show_story_vote_elements
+    get :show, :id => stories(:one)
+    assert_select 'h2 span#vote_score'
+    assert_select 'ul#vote_history li', :count => 2
+    assert_select 'div#vote_form form'
+  end
 end

test/functional/votes_controller_test.rb

@@ -1,8 +1,20 @@
 require 'test_helper'
 
 class VotesControllerTest < ActionController::TestCase
-  # Replace this with your real tests.
-  test "the truth" do
-    assert true
+  def test_should_accept_vote
+    assert stories(:two).votes.empty?
+    post :create, :story_id => stories(:two)
+    assert !assigns(:story).votes.empty?
+  end
+
+  def test_should_render_rjs_after_vote_with_ajax
+    xml_http_request :post, :create, :story_id => stories(:two)
+    assert_response :success
+    assert_template 'create'
+  end
+
+  def test_should_redirect_after_vote_with_http_post
+    post :create, :story_id => stories(:two)
+    assert_redirected_to story_path(stories(:two))
   end
 end

test/unit/story_test.rb

@@ -21,4 +21,17 @@ def test_should_create_story
 
     assert s.valid?
   end
+
+  def test_should_have_a_votes_association
+    assert_equal [votes(:first), votes(:second)], stories(:one).votes
+  end
+
+  def test_should_return_highest_vote_id_first
+    assert_equal votes(:second), stories(:one).votes.latest.first
+  end
+
+  def test_should_return_3_latest_votes
+    10.times { stories(:one).votes.create }
+    assert_equal 3, stories(:one).votes.latest.size
+  end
 end

test/unit/vote_test.rb

@@ -1,8 +1,7 @@
 require 'test_helper'
 
 class VoteTest < ActiveSupport::TestCase
-  # Replace this with your real tests.
-  test "the truth" do
-    assert true
+  def test_story_association
+    assert_equal stories(:one), votes(:first).story
   end
 end