Add like learning object test

spec/acceptance/learning_objects_spec.rb

 require 'acceptance_helpers'
+require 'shared/contexts'
 
 resource 'Learning Objects' do
-  header 'Accept', 'application/json'
-  header 'Content-Type', 'application/json'
 
   before { 12.times { create(:learning_object) } }
 
@@ -34,14 +33,16 @@ resource 'Learning Objects' do
   end
 
   post '/v1/learning_objects/:id/like' do
-    let(:id) { learning_objects.first.id }
+    include_context "authenticate_user"
 
+    let(:id) { learning_objects.first.id }
+  
     example 'Liking a learning object' do
-      likes = learning_objects.first.likes
+      likes = learning_objects.first.likes.count
       do_request
       expect(path).to eq("/v1/learning_objects/#{id}/like")
-      expect(JSON.parse(response_body)).to eq(likes + 1)
-      expect(status).to eq(200)
+      expect(JSON.parse(response_body)['count']).to eq(likes + 1)
+      expect(status).to eq(201)
     end
   end
 

spec/shared/contexts.rb

@@ -3,12 +3,13 @@ require 'rspec_api_documentation'
 require 'rspec_api_documentation/dsl'
 require 'spec_helper'
 
-RSpec.shared_context "authentication", shared_context: :metadata do
+RSpec.shared_context "authenticate_user", shared_context: :metadata do
   let(:auth_client) { @auth_headers['client'] }
   let(:uid) { @auth_headers['uid'] }
   let(:access_token) { @auth_headers['access-token'] }
 
-  def authenticate(user)
-    @auth_headers = user.create_new_auth_token
+  before do
+    @auth_headers = create(:user).create_new_auth_token
   end
+
 end