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-rw-r--r--actionpack/lib/action_controller/template_assertions.rb2
1 files changed, 2 insertions, 0 deletions
diff --git a/actionpack/lib/action_controller/template_assertions.rb b/actionpack/lib/action_controller/template_assertions.rb
index 0179f4afcd..dd83c1a283 100644
--- a/actionpack/lib/action_controller/template_assertions.rb
+++ b/actionpack/lib/action_controller/template_assertions.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
module ActionController
module TemplateAssertions
def assert_template(options = {}, message = nil)