delayed jobs: fix exception on index page.

app/views/delayed_jobs/index.html.erb

@@ -24,7 +24,7 @@
         <%= time_ago_in_words_tagged(job.run_at) %>
       <% end %>
       <% t.column column: "control" do |job| %>
-        <% if policy(job).update? %>
+        <% if DelayedJobPolicy.new([CurrentUser.user, request], job).update? %>
           <% if job.locked_at? %>
             Running
           <% elsif job.failed? %>

test/factories/delayed_job.rb

@@ -0,0 +1,5 @@
+FactoryBot.define do
+  factory :delayed_job, class: Delayed::Job do
+    handler { "" }
+  end
+end

test/functional/delayed_jobs_controller_test.rb

@@ -4,6 +4,7 @@ class DelayedJobsControllerTest < ActionDispatch::IntegrationTest
   context "The delayed jobs controller" do
     context "index action" do
       should "render" do
+        create(:delayed_job)
         get delayed_jobs_path
         assert_response :success
       end