Use DeleteUserWorker for removing users via spam logs

Before deleting a user via a SpamLog would just call `user.destroy`,
which may omit other things that need to be cleaned up.

app/controllers/admin/spam_logs_controller.rb

@@ -7,7 +7,7 @@ class Admin::SpamLogsController < Admin::ApplicationController
     spam_log = SpamLog.find(params[:id])
 
     if params[:remove_user]
-      spam_log.remove_user
+      spam_log.remove_user(deleted_by: current_user)
       redirect_to admin_spam_logs_path, notice: "User #{spam_log.user.username} was successfully removed."
     else
       spam_log.destroy

app/models/spam_log.rb

@@ -3,9 +3,9 @@ class SpamLog < ActiveRecord::Base
 
   validates :user, presence: true
 
-  def remove_user
+  def remove_user(deleted_by:)
     user.block
-    user.destroy
+    DeleteUserWorker.perform_async(deleted_by.id, user.id, delete_solo_owned_groups: true, hard_delete: true)
   end
 
   def text

spec/models/spam_log_spec.rb

@@ -1,6 +1,8 @@
 require 'spec_helper'
 
 describe SpamLog, models: true do
+  let(:admin) { create(:admin) }
+
   describe 'associations' do
     it { is_expected.to belong_to(:user) }
   end
@@ -13,13 +15,18 @@ describe SpamLog, models: true do
     it 'blocks the user' do
       spam_log = build(:spam_log)
 
-      expect { spam_log.remove_user }.to change { spam_log.user.blocked? }.to(true)
+      expect { spam_log.remove_user(deleted_by: admin) }.to change { spam_log.user.blocked? }.to(true)
     end
 
     it 'removes the user' do
       spam_log = build(:spam_log)
+      user = spam_log.user
 
-      expect { spam_log.remove_user }.to change { User.count }.by(-1)
+      Sidekiq::Testing.inline! do
+        spam_log.remove_user(deleted_by: admin)
+      end
+
+      expect { User.find(user.id) }.to raise_error(ActiveRecord::RecordNotFound)
     end
   end
 end