added live events for when a file (attachment) is published or unpublished (locked)

lib/canvas/live_events.rb

@@ -457,6 +457,7 @@ def self.get_attachment_data(attachment)
       folder_id: attachment.global_folder_id,
       unlock_at: attachment.unlock_at,
       lock_at: attachment.lock_at,
+      locked: attachment.locked,
       updated_at: attachment.updated_at
     }
   end

lib/canvas/live_events_callbacks.rb

@@ -143,7 +143,7 @@ def self.after_update(obj, changes)
       Canvas::LiveEvents.assignment_override_updated(obj)
     when Attachment
       if attachment_eligible?(obj)
-        if %w[display_name lock_at unlock_at folder_id].any? { |field| changes[field] }
+        if %w[display_name lock_at unlock_at folder_id locked].any? { |field| changes[field] }
           Canvas::LiveEvents.attachment_updated(obj, changes["display_name"]&.first)
         elsif changes["file_state"] && obj.file_state == "deleted"
           # Attachments are often soft deleted rather than destroyed

spec/observers/live_events_observer_spec.rb

@@ -137,6 +137,21 @@
         attachment.touch
       end
     end
+
+    context "if the attachment is published" do
+      it "posts attachment_updated event" do
+        attachment.update(locked: true)
+        expect(Canvas::LiveEvents).to receive(:attachment_updated)
+        attachment.publish!
+      end
+    end
+
+    context "if the attachment is unpublished" do
+      it "posts attachment_updated event" do
+        expect(Canvas::LiveEvents).to receive(:attachment_updated)
+        attachment.update(locked: true)
+      end
+    end
   end
 
   describe "conversation" do