1 files changed, 47 insertions, 1 deletions
diff --git a/test/ruby/test_inlinecache.rb b/test/ruby/test_inlinecache.rb
index 90d0189d4c..d48d95d74e 100644
--- a/test/ruby/test_inlinecache.rb
+++ b/test/ruby/test_inlinecache.rb
@@ -3,7 +3,7 @@
 
 require 'test/unit'
 
-class TestMethod < Test::Unit::TestCase
+class TestMethodInlineCache < Test::Unit::TestCase
   def test_alias
     m0 = Module.new do
       def foo; :M0 end
@@ -61,4 +61,50 @@ class TestMethod < Test::Unit::TestCase
       assert_equal :E, test[]
     EOS
   end
+
+  def test_module_methods_redefiniton
+    m0 = Module.new do
+      def foo
+        super
+      end
+    end
+
+    c1 = Class.new do
+      def foo
+        :C1
+      end
+    end
+
+    c2 = Class.new do
+      def foo
+        :C2
+      end
+    end
+
+    d1 = Class.new(c1) do
+      include m0
+    end
+
+    d2 = Class.new(c2) do
+      include m0
+    end
+
+    assert_equal :C1, d1.new.foo
+
+    m = Module.new do
+      def foo
+        super
+      end
+    end
+
+    d1.class_eval do
+      include m
+    end
+
+    d2.class_eval do
+      include m
+    end
+
+    assert_equal :C2, d2.new.foo
+  end
 end