Add route update message spec

Author: hoffmaen

spec/unit/messages/route_update_message_spec.rb

@@ -18,11 +18,34 @@ module VCAP::CloudController
         expect(message).to be_valid
       end
 
+      it 'accepts options params with round-robin load-balancing algorithm' do
+        message = RouteUpdateMessage.new(params.merge(options: { lb_algo: 'round-robin' }))
+        expect(message).to be_valid
+      end
+
+      it 'accepts options params with least-connections load-balancing algorithm' do
+        message = RouteUpdateMessage.new(params.merge(options: { lb_algo: 'least-connections' }))
+        expect(message).to be_valid
+      end
+
       it 'does not accept any other params' do
         message = RouteUpdateMessage.new(params.merge(unexpected: 'unexpected_value'))
         expect(message).not_to be_valid
         expect(message.errors.full_messages[0]).to include("Unknown field(s): 'unexpected'")
       end
+
+      it 'does not accept unknown load-balancing algorithm' do
+        message = RouteUpdateMessage.new(params.merge(options: { lb_algo: 'cheesecake' }))
+        expect(message).not_to be_valid
+        expect(message.errors.full_messages[0]).to include("Options Lb algo 'cheesecake' is not a supported load-balancing algorithm")
+      end
+
+      it 'does not accept unknown option' do
+        message = RouteUpdateMessage.new(params.merge(options: { gorgonzola: 'gouda' }))
+        expect(message).not_to be_valid
+        expect(message.errors.full_messages[0]).to include("Options Unknown field(s): 'gorgonzola'")
+      end
+
     end
   end
 end