Extract WhodunnitVote as a model

app/commands/decidim/action_delegator/vote_delegation.rb

@@ -22,23 +22,6 @@ def build_vote
           response: response
         )
       end
-
-      class WhodunnitVote < DelegateClass(Decidim::Consultations::Vote)
-        def initialize(vote, user)
-          @user = user
-          super(vote)
-        end
-
-        def save
-          PaperTrail.request(whodunnit: user.id) do
-            super
-          end
-        end
-
-        private
-
-        attr_reader :user
-      end
     end
   end
 end

app/models/decidim/action_delegator/whodunnit_vote.rb

@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+module Decidim
+  module ActionDelegator
+    class WhodunnitVote < DelegateClass(Decidim::Consultations::Vote)
+      def initialize(vote, user)
+        @user = user
+        super(vote)
+      end
+
+      def save
+        PaperTrail.request(whodunnit: user.id) do
+          super
+        end
+      end
+
+      private
+
+      attr_reader :user
+    end
+  end
+end

spec/models/decidim/action_delegator/whodunnit_vote_spec.rb

@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+require "spec_helper"
+
+describe Decidim::ActionDelegator::WhodunnitVote do
+  describe "#save" do
+    subject { described_class.new(vote, user) }
+
+    let(:vote) { build(:vote) }
+    let(:user) { create(:user) }
+
+    it "sets PaperTrail's whodunnit" do
+      expect(PaperTrail).to receive(:request).with(whodunnit: user.id).and_yield
+      subject.save
+    end
+  end
+end