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-rw-r--r--test/builder/line.ru4
1 files changed, 3 insertions, 1 deletions
diff --git a/test/builder/line.ru b/test/builder/line.ru
index f4c84ade..9ad88986 100644
--- a/test/builder/line.ru
+++ b/test/builder/line.ru
@@ -1 +1,3 @@
-run lambda{ |env| [200, {'Content-Type' => 'text/plain'}, [__LINE__.to_s]] }
+# frozen_string_literal: true
+
+run lambda{ |env| [200, { 'Content-Type' => 'text/plain' }, [__LINE__.to_s]] }