adding collection controller specs

spec/controllers/v1/collections_controller_spec.rb

@@ -3,17 +3,26 @@ require 'rails_helper'
 RSpec.describe V1::CollectionsController, type: :controller do
   fixtures :applications
 
+  it { should use_before_action(:authenticate_user!) }
+  it { should use_before_action(:set_collection) }
+  it { should route(:get, '/v1/collections').to(action: :index) }
+
   describe 'GET #index' do
-    it 'will return an array of collections' do
-      auth_app applications(:test_app), @request
-      get :index
-      expect(response).to have_http_status(:ok)
-      expect(response.content_type).to eq "application/json"
+
+    context 'when application is authenticated' do
+      before do
+        auth_app applications(:test_app), @request
+        get :index
+      end
+
+      it { expect(response.content_type).to eq('application/json') }
+      it { expect(response).to have_http_status(:ok) }
     end
 
-    it 'will return not authorized when app is not authenticated' do
-      get :index
-      expect(response).to have_http_status(:unauthorized)
+    context 'when application is not authenticated' do
+      before { get :index }
+
+      it { expect(response).to have_http_status(:unauthorized) }
     end
   end