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-rw-r--r--test/testunit/test4test_sorting.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/test/testunit/test4test_sorting.rb b/test/testunit/test4test_sorting.rb
index b8bb9430b5..4848a78b5d 100644
--- a/test/testunit/test4test_sorting.rb
+++ b/test/testunit/test4test_sorting.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
$LOAD_PATH.unshift "#{File.dirname(__FILE__)}/../lib"
require 'test/unit'