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-rw-r--r--test/ruby/test_lambda.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/test/ruby/test_lambda.rb b/test/ruby/test_lambda.rb
index b2b4c9c907..f61e8a9f62 100644
--- a/test/ruby/test_lambda.rb
+++ b/test/ruby/test_lambda.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
require 'test/unit'
class TestLambdaParameters < Test::Unit::TestCase