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-rw-r--r--test/ruby/test_module.rb7
1 files changed, 7 insertions, 0 deletions
diff --git a/test/ruby/test_module.rb b/test/ruby/test_module.rb
index 6b53b7d5f4..0a5597fd6c 100644
--- a/test/ruby/test_module.rb
+++ b/test/ruby/test_module.rb
@@ -478,6 +478,13 @@ class TestModule < Test::Unit::TestCase
assert_raise(ArgumentError) { Module.new { include } }
end
+ def test_prepend_self
+ m = Module.new
+ assert_equal([m], m.ancestors)
+ m.prepend(m) rescue nil
+ assert_equal([m], m.ancestors)
+ end
+
def test_prepend_works_with_duped_classes
m = Module.new
a = Class.new do