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-rw-r--r--test/server_helper.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/test/server_helper.rb b/test/server_helper.rb
index cc34f4a..16a3ae3 100644
--- a/test/server_helper.rb
+++ b/test/server_helper.rb
@@ -1,5 +1,6 @@
 # Copyright (C) 2013-2015 all contributors <yahns-public@yhbt.net>
 # License: GPLv3 or later (https://www.gnu.org/licenses/gpl-3.0.txt)
+# frozen_string_literal: true
 require_relative 'helper'
 require 'timeout'
 require 'socket'