Make it easier to override how to save the results

app/workers/repository_check/single_repository_worker.rb

@@ -5,14 +5,19 @@ module RepositoryCheck
 
     def perform(project_id)
       project = Project.find(project_id)
+
+      save_result(project, !check)
+    end
+
+    private
+
+    def save_result(project, failure)
       project.update_columns(
-        last_repository_check_failed: !check(project),
+        last_repository_check_failed: failure,
         last_repository_check_at: Time.now
       )
     end
 
-    private
-
     def check(project)
       check_repo(project) && check_wiki_repo(project)
     end