Adapt serializer specs to the new format

spec/serializers/event_serializer_spec.rb

@@ -8,7 +8,6 @@ describe EventSerializer, type: :serializer do
   context 'event does not have date, room and tracks assigned' do
     it 'sets guid, title, length, abstract and type' do
       expected_json = {
-        event: {
         guid:           event.guid,
         title:          'Some Talk',
         length:         30,
@@ -19,7 +18,6 @@ describe EventSerializer, type: :serializer do
         type:           'Example Event Type',
         room:           nil,
         track:          nil
-        }
       }.to_json
 
       expect(serializer.to_json).to eq expected_json
@@ -40,7 +38,6 @@ describe EventSerializer, type: :serializer do
 
     it 'sets guid, title, length, abstract, type, date, language, speakers, room and track' do
       expected_json = {
-        event: {
         guid:           event.guid,
         title:          'Some Talk',
         length:         30,
@@ -51,7 +48,6 @@ describe EventSerializer, type: :serializer do
         type:           'Example Event Type',
         room:           room.guid,
         track:          track.guid
-        }
       }.to_json
 
       expect(serializer.to_json).to eq expected_json

spec/serializers/room_serializer_spec.rb

@@ -7,11 +7,9 @@ describe RoomSerializer, type: :serializer do
 
   it 'set guid, name and description' do
     expected_json = {
-      room: {
       guid:        room.guid,
       name:        room.name,
       description: ''
-      }
     }.to_json
 
     expect(serializer.to_json).to eq expected_json

spec/serializers/speaker_serializer_spec.rb

@@ -8,11 +8,9 @@ describe SpeakerSerializer, type: :serializer do
   context 'speaker does not have biography' do
     it 'sets name and affiliation' do
       expected_json = {
-        speaker: {
         name:        'John Doe',
         affiliation: 'JohnDoesInc',
         biography:   nil
-        }
       }.to_json
 
       expect(serializer.to_json).to eq expected_json
@@ -24,11 +22,9 @@ describe SpeakerSerializer, type: :serializer do
 
     it 'sets name, affiliation and biography' do
       expected_json = {
-        speaker: {
         name:        'John Doe',
         affiliation: 'JohnDoesInc',
         biography:   'Doest of all Jon Does'
-        }
       }.to_json
 
       expect(serializer.to_json).to eq expected_json

spec/serializers/track_serializer_spec.rb

@@ -8,11 +8,9 @@ describe TrackSerializer, type: :serializer do
 
   it 'sets guild, name, color' do
     expected_json = {
-      track: {
       guid:  track.guid,
       name:  track.name,
       color: track.color
-      }
     }.to_json
 
     expect(serializer.to_json).to eq expected_json

spec/support/schemas/conference.json

@@ -1,7 +1,4 @@
 {
-  "type": "object",
-  "required": ["conference"],
-  "properties": {
   "conference" : {
     "type" : "object",
     "required" : [
@@ -97,5 +94,4 @@
       }
     }
   }
-  }
 }