some refactoring and fixing spec

app/models/project.rb

@@ -1017,4 +1017,9 @@ class Project < ActiveRecord::Base
       builds.running_or_pending.count(:all)
     end
   end
+
+  def mark_import_as_failed(error_message)
+    import_fail
+    update_column(:import_error, Gitlab::UrlSanitizer.sanitize(error_message))
+  end
 end

app/workers/repository_fork_worker.rb

@@ -15,8 +15,7 @@ class RepositoryForkWorker
     result = gitlab_shell.fork_repository(source_path, target_path)
     unless result
       logger.error("Unable to fork project #{project_id} for repository #{source_path} -> #{target_path}")
-      project.update(import_error: "The project could not be forked.")
-      project.import_fail
+      project.mark_import_as_failed('The project could not be forked.')
       return
     end
 
@@ -24,8 +23,7 @@ class RepositoryForkWorker
 
     unless project.valid_repo?
       logger.error("Project #{project_id} had an invalid repository after fork")
-      project.update(import_error: "The forked repository is invalid.")
-      project.import_fail
+      project.mark_import_as_failed('The forked repository is invalid.')
       return
     end
 

app/workers/repository_import_worker.rb

@@ -13,8 +13,7 @@ class RepositoryImportWorker
     result = Projects::ImportService.new(project, current_user).execute
 
     if result[:status] == :error
-      project.update(import_error: Gitlab::UrlSanitizer.sanitize(result[:message]))
-      project.import_fail
+      project.mark_import_as_failed(Gitlab::UrlSanitizer.sanitize(result[:message]))
       return
     end