Fix test coverage

components/app/spec/lib/rayo/command/twilio_stream/start_spec.rb

@@ -4,10 +4,6 @@ module Rayo
   module Command
     module TwilioStream
       RSpec.describe Start do
-        def parse_stanza(xml)
-          Nokogiri::XML.parse(xml, nil, nil, Nokogiri::XML::ParseOptions::NOBLANKS)
-        end
-
         describe "#to_xml" do
           it "serializes to Rayo XML" do
             metadata = {

components/app/spec/lib/rayo/command/twilio_stream/stop_spec.rb

@@ -4,10 +4,6 @@ module Rayo
   module Command
     module TwilioStream
       RSpec.describe Stop do
-        def parse_stanza(xml)
-          Nokogiri::XML.parse(xml, nil, nil, Nokogiri::XML::ParseOptions::NOBLANKS)
-        end
-
         describe "#to_xml" do
           it "serializes to Rayo XML" do
             command = Stop.new(uuid: "call-id")

components/app/spec/support/fake_redis.rb

@@ -48,20 +48,16 @@ def unsubscribe!(*channel_names)
       if Array(channel_names).empty?
         subscribed_channels.each do |channel|
           channel.subscribed = false
-          next unless callbacks.key?(:unsubscribe)
-
-          callbacks.fetch(:unsubscribe).call(channel.name, subscribed_channels.size)
+          on_unsubscribe
         end
       else
         Array(channel_names).each do |channel_name|
           channel = find_channel(channel_name)
-          if channel.present?
-            next unless channel.subscribed?
-            channel.subscribed = false
-            next unless callbacks.key?(:unsubscribe)
+          next if channel.blank?
+          next unless channel.subscribed?
 
-            callbacks.fetch(:unsubscribe).call(channel.name, subscribed_channels.size)
-          end
+          channel.subscribed = false
+          on_unsubscribe
         end
       end
     end
@@ -89,9 +85,15 @@ def poll_for_messages
       end
     end
 
+    private
+
     def subscribed_channels
       channels.find_all(&:subscribed?)
     end
+
+    def on_unsubscribe
+      callbacks.fetch(:unsubscribe).call(channel.name, subscribed_channels.size) if callbacks.key?(:unsubscribe)
+    end
   end
 
   attr_reader :subscription_options, :future_messages, :subscriptions