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-rw-r--r--actionpack/test/abstract/callbacks_test.rb4
1 files changed, 3 insertions, 1 deletions
diff --git a/actionpack/test/abstract/callbacks_test.rb b/actionpack/test/abstract/callbacks_test.rb
index 9c2261bf76..fdc09bd951 100644
--- a/actionpack/test/abstract/callbacks_test.rb
+++ b/actionpack/test/abstract/callbacks_test.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
require "abstract_unit"
module AbstractController
@@ -42,7 +44,7 @@ module AbstractController
def aroundz
@aroundz = "FIRST"
yield
- @aroundz << "SECOND"
+ @aroundz += "SECOND"
end
def index