Include roots for resources in rabl index views

app/views/api/playlists/index.rabl

@@ -1,4 +1,4 @@
-collection @playlists
+collection @playlists, root: :playlists, object_root: false
 
 attribute :id
 attribute :name

app/views/api/tracks/index.rabl

@@ -1,4 +1,4 @@
-collection @tracks
+collection @tracks, root: :tracks, object_root: false
 
 attribute :id
 attribute :name

spec/integration/api/api_sign_in_spec.rb

@@ -13,7 +13,7 @@ describe 'API sign in' do
   it 'signs the user in with valid credentials' do
     do_create
 
-    expect(json).to eq(id: user.id)
+    expect(json).to eq(user: { id: user.id })
   end
 
   [:email, :password].each do |attr|

spec/integration/api/playlists_spec.rb

@@ -7,33 +7,35 @@ describe 'API playlists' do
     playlist = create :playlist
     get api_playlists_path, format: :json
 
-    expect(json).to match [
-      a_hash_including(
-        id:   an_instance_of(Fixnum),
-        name: playlist[:name]
-      )
-    ]
+    expect(json).to eq(
+      playlists: [{
+        id:   playlist.id,
+        name: playlist.name
+      }]
+    )
   end
 
   it 'shows a playlist' do
     playlist = create :playlist
     get api_playlist_path playlist, format: :json
 
-    expect(json).to match(
-      id:   playlist.id,
-      name: playlist.name
+    expect(json).to eq(
+      playlist: {
+        id:   playlist.id,
+        name: playlist.name
+      }
     )
   end
 
   it 'creates playlist' do
     playlist = attributes_for :playlist
-    post api_playlists_path,
-      format: :json,
-      playlist: playlist
+    post api_playlists_path, format: :json, playlist: playlist
 
     expect(json).to match(
-      id:   an_instance_of(Fixnum),
-      name: playlist[:name]
+      playlist: {
+        id:   an_instance_of(Fixnum),
+        name: playlist[:name]
+      }
     )
   end
 end

spec/integration/api/tracks_spec.rb

@@ -8,26 +8,30 @@ describe 'API tracks' do
     track_2 = create :track, name: 'Track 2'
     get api_tracks_path, format: :json
 
-    expect(json).to eq [
-      {
-        id:         track_1.id,
-        name:       'Track 1',
-        sound_url:  api_sound_url(track_1.sound)
-      },
-      {
-        id:         track_2.id,
-        name:       'Track 2'
-      }
-    ]
+    expect(json).to eq(
+      tracks: [
+        {
+          id:         track_1.id,
+          name:       'Track 1',
+          sound_url:  api_sound_url(track_1.sound)
+        },
+        {
+          id:         track_2.id,
+          name:       'Track 2'
+        }
+      ]
+    )
   end
 
   it 'shows a track' do
     track = create :track
     get api_track_path track, format: :json
 
-    expect(json).to match(
-      id:   track.id,
-      name: track.name
+    expect(json).to eq(
+      track: {
+        id:   track.id,
+        name: track.name
+      }
     )
   end
 end