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-rw-r--r--activerecord/test/cases/readonly_test.rb2
1 files changed, 2 insertions, 0 deletions
diff --git a/activerecord/test/cases/readonly_test.rb b/activerecord/test/cases/readonly_test.rb
index 24b678310d..d1b85cb4ef 100644
--- a/activerecord/test/cases/readonly_test.rb
+++ b/activerecord/test/cases/readonly_test.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
require "cases/helper"
require "models/author"
require "models/post"