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-rw-r--r--activesupport/test/number_helper_i18n_test.rb2
1 files changed, 2 insertions, 0 deletions
diff --git a/activesupport/test/number_helper_i18n_test.rb b/activesupport/test/number_helper_i18n_test.rb
index a1d1c41dc2..6d6958be49 100644
--- a/activesupport/test/number_helper_i18n_test.rb
+++ b/activesupport/test/number_helper_i18n_test.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
require "abstract_unit"
require "active_support/number_helper"
require "active_support/core_ext/hash/keys"