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-rw-r--r--test/io/console/test_io_console.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/test/io/console/test_io_console.rb b/test/io/console/test_io_console.rb
index ba9063e1b3..36619cebd5 100644
--- a/test/io/console/test_io_console.rb
+++ b/test/io/console/test_io_console.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
begin
require 'io/console'
require 'test/unit'