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-rw-r--r--test/testunit/test_sorting.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/test/testunit/test_sorting.rb b/test/testunit/test_sorting.rb
index e13ca1f..f9de3ec 100644
--- a/test/testunit/test_sorting.rb
+++ b/test/testunit/test_sorting.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
require 'test/unit'
class TestTestUnitSorting < Test::Unit::TestCase