Make sure scopes are loaded in admin OAuth application form

app/controllers/admin/applications_controller.rb

@@ -2,7 +2,7 @@ class Admin::ApplicationsController < Admin::ApplicationController
   include OauthApplications
 
   before_action :set_application, only: [:show, :edit, :update, :destroy]
-  before_action :load_scopes, only: [:new, :edit]
+  before_action :load_scopes, only: [:new, :create, :edit, :update]
 
   def index
     @applications = Doorkeeper::Application.where("owner_id IS NULL")

spec/controllers/admin/applications_controller_spec.rb

+require 'spec_helper'
+
+describe Admin::ApplicationsController do
+  let(:admin) { create(:admin) }
+  let(:application) { create(:oauth_application, owner_id: nil, owner_type: nil) }
+
+  before do
+    sign_in(admin)
+  end
+
+  describe 'GET #new' do
+    it 'renders the application form' do
+      get :new
+
+      expect(response).to render_template :new
+      expect(assigns[:scopes]).to be_kind_of(Doorkeeper::OAuth::Scopes)
+    end
+  end
+
+  describe 'GET #edit' do
+    it 'renders the application form' do
+      get :edit, id: application.id
+
+      expect(response).to render_template :edit
+      expect(assigns[:scopes]).to be_kind_of(Doorkeeper::OAuth::Scopes)
+    end
+  end
+
+  describe 'POST #create' do
+    it 'creates the application' do
+      expect do
+        post :create, doorkeeper_application: attributes_for(:application)
+      end.to change { Doorkeeper::Application.count }.by(1)
+
+      application = Doorkeeper::Application.last
+
+      expect(response).to redirect_to(admin_application_path(application))
+    end
+
+    it 'renders the application form on errors' do
+      expect do
+        post :create, doorkeeper_application: attributes_for(:application).merge(redirect_uri: nil)
+      end.not_to change { Doorkeeper::Application.count }
+
+      expect(response).to render_template :new
+      expect(assigns[:scopes]).to be_kind_of(Doorkeeper::OAuth::Scopes)
+    end
+  end
+
+  describe 'PATCH #update' do
+    it 'updates the application' do
+      patch :update, id: application.id, doorkeeper_application: { redirect_uri: 'http://example.com/' }
+
+      expect(response).to redirect_to(admin_application_path(application))
+      expect(application.reload.redirect_uri).to eq 'http://example.com/'
+    end
+
+    it 'renders the application form on errors' do
+      patch :update, id: application.id, doorkeeper_application: { redirect_uri: nil }
+
+      expect(response).to render_template :edit
+      expect(assigns[:scopes]).to be_kind_of(Doorkeeper::OAuth::Scopes)
+    end
+  end
+end