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-rw-r--r--activesupport/test/time_zone_test_helpers.rb2
1 files changed, 2 insertions, 0 deletions
diff --git a/activesupport/test/time_zone_test_helpers.rb b/activesupport/test/time_zone_test_helpers.rb
index e1d615d154..051703a781 100644
--- a/activesupport/test/time_zone_test_helpers.rb
+++ b/activesupport/test/time_zone_test_helpers.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
module TimeZoneTestHelpers
def with_tz_default(tz = nil)
old_tz = Time.zone