aboutsummaryrefslogtreecommitdiffstats
path: root/activesupport/test/descendants_tracker_test_cases.rb
diff options
context:
space:
mode:
Diffstat (limited to 'activesupport/test/descendants_tracker_test_cases.rb')
-rw-r--r--activesupport/test/descendants_tracker_test_cases.rb2
1 files changed, 2 insertions, 0 deletions
diff --git a/activesupport/test/descendants_tracker_test_cases.rb b/activesupport/test/descendants_tracker_test_cases.rb
index cf349d53ee..1f8b4a8605 100644
--- a/activesupport/test/descendants_tracker_test_cases.rb
+++ b/activesupport/test/descendants_tracker_test_cases.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
require "set"
module DescendantsTrackerTestCases