Cleaning up

test/controllers/moderations_controller_test.rb

@@ -45,7 +45,7 @@ class ModerationsControllerTest < ActionDispatch::IntegrationTest
     @moderation = events :proposed
 
     decision = @moderation.decision_time
-    assert !@moderation.moderated?
+    assert_not @moderation.moderated?
 
     assert_difference 'Event.moderated.count' do
       put accept_moderation_url(@moderation)

test/models/event_test.rb

@@ -74,7 +74,7 @@ class EventTest < ActiveSupport::TestCase
     )
 
     assert @event.save, @event.errors.messages
-    assert !@event.moderated?
+    assert_not @event.moderated?
 
     @event.update moderated: 1