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-rw-r--r--actionpack/test/dispatch/header_test.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/actionpack/test/dispatch/header_test.rb b/actionpack/test/dispatch/header_test.rb
index 958450072e..11b7dee8c9 100644
--- a/actionpack/test/dispatch/header_test.rb
+++ b/actionpack/test/dispatch/header_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
require "abstract_unit"
class HeaderTest < ActiveSupport::TestCase