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-rw-r--r--railties/lib/rails/generators/testing/behaviour.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/railties/lib/rails/generators/testing/behaviour.rb b/railties/lib/rails/generators/testing/behaviour.rb
index ce0e42e60d..e66d7dc64f 100644
--- a/railties/lib/rails/generators/testing/behaviour.rb
+++ b/railties/lib/rails/generators/testing/behaviour.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
require "active_support/core_ext/class/attribute"
require "active_support/core_ext/module/delegation"
require "active_support/core_ext/hash/reverse_merge"