1 files changed, 7 insertions, 0 deletions
diff --git a/test/ruby/test_class.rb b/test/ruby/test_class.rb
index 5086e60398..300ab950ac 100644
--- a/test/ruby/test_class.rb
+++ b/test/ruby/test_class.rb
@@ -96,6 +96,13 @@ class TestClass < Test::Unit::TestCase
 
   def test_superclass_of_basicobject
     assert_equal(nil, BasicObject.superclass)
+
+    assert_separately([], "#{<<~"begin;"}\n#{<<~'end;'}")
+    begin;
+      module Mod end
+      BasicObject.include(Mod)
+      assert_equal(nil, BasicObject.superclass)
+    end;
   end
 
   def test_module_function