spec/acceptance/realtime/channel_history_spec.rb in ably-1.1.6 vs spec/acceptance/realtime/channel_history_spec.rb in ably-1.1.7

@@ -181,9 +181,34 @@
             end
           end
         end
       end
 
+      context 'when channel receives update event after an attachment' do
+        before do
+          channel.on(:attached) do
+            channel.publish(event, message_after_attach) do
+              subsequent_serial = channel.properties.attach_serial.dup.tap { |serial| serial[-1] = '1' }
+              attached_message = Ably::Models::ProtocolMessage.new(action: 11, channel: channel_name, flags: 0, channel_serial: subsequent_serial)
+              client.connection.__incoming_protocol_msgbus__.publish :protocol_message, attached_message
+            end
+          end
+        end
+
+        it 'updates attach_serial' do
+          rest_channel.publish event, message_before_attach
+
+          channel.on(:update) do
+            channel.history(until_attach: true) do |messages|
+              expect(messages.items.count).to eql(2)
+              stop_reactor
+            end
+          end
+
+          channel.attach
+        end
+      end
+
       context 'and two pages of messages' do
         it 'retrieves two pages of messages before channel was attached' do
           10.times { rest_channel.publish event, message_before_attach }
 
           channel.attach do