Fix conference serializer spec to work with MySQL

spec/serializers/conference_serializer_spec.rb

@@ -1,4 +1,5 @@
 require 'spec_helper'
+
 describe ConferenceSerializer, type: :serializer do
   let(:conference) do
     create(:conference, short_title: 'goto',
@@ -8,84 +9,20 @@ describe ConferenceSerializer, type: :serializer do
   end
 
   let(:serializer) { ConferenceSerializer.new(conference) }
-  let(:expected_hash) do
-    {
-      conference: {
-        short_title: 'goto',
-        title: conference.title,
-        description: 'Lorem ipsum dolor sit',
-        start_date: '2014-03-04',
-        end_date: '2014-03-10',
-        picture_url: nil,
-        difficulty_levels:
-          [{id: 1,
-            title: 'Easy',
-            description: 'Events are understandable for everyone without knowledge of the topic.'
-           },
-           {id: 2,
-            title: 'Medium',
-            description: 'Events require a basic understanding of the topic.'
-           },
-           {id: 3,
-            title: 'Hard',
-            description: 'Events require expert knowledge of the topic.'
-           }
-          ],
-        event_types:
-          [{id: 1,
-            title: 'Talk',
-            length: 30,
-            description: 'Presentation in lecture format'
-           },
-           {id: 2,
-            title: 'Workshop',
-            length: 60,
-            description: 'Interactive hands-on practice'
-           }
-          ],
-        rooms: [],
-        tracks: [],
-        date_range: 'March 04 - 10',
-        revision: 1
-      }
-    }
-  end
 
-  context 'conference does not have rooms and tracks' do
-    it 'sets conference attributes with empty room and tracks' do
-      expect(serializer.to_json).to eq expected_hash.to_json
+  context 'when the conference does not have rooms and tracks' do
+    it 'correctly serializes the conference' do
+      expect(serializer.to_json).to match_response_schema('conference')
     end
   end
 
-  context 'conference has rooms and tracks' do
-    before do
-      venue = create(:venue, conference: conference)
-      _room = create(:room, venue: venue)
-      track = create(:track, program: conference.program)
+  context 'when the conference has rooms and tracks' do
+    let(:venue) { create(:venue, conference: conference) }
+    let!(:room) { create(:room, venue: venue) }
+    let!(:track) { create(:track, program: conference.program) }
 
-      room_hash = {
-        rooms: [{
-            id: 1,
-            size: 4,
-            events: []
-          }
-        ]
-      }
-      track_hash = {
-        tracks: [{
-            id: 1,
-            name: track.name,
-            description: track.description
-          }
-        ]
-      }
-
-      expected_hash[:conference].merge! room_hash
-      expected_hash[:conference].merge! track_hash
-    end
-
-    it 'sets conference attributes with rooms and tracks' do
-      expect(serializer.to_json).to eq expected_hash.to_json
+    it 'correctly serializes the conference' do
+      expect(serializer.to_json).to match_response_schema('conference')
     end
   end
 end