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-rw-r--r--lib/rubygems/test_case.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/rubygems/test_case.rb b/lib/rubygems/test_case.rb
index 0e0bdfbe3e..3ffc608a1c 100644
--- a/lib/rubygems/test_case.rb
+++ b/lib/rubygems/test_case.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
# TODO: $SAFE = 1
begin