1 files changed, 11 insertions, 0 deletions
diff --git a/test/ruby/test_yield.rb b/test/ruby/test_yield.rb
index 3337aea078..143ee55a9f 100644
--- a/test/ruby/test_yield.rb
+++ b/test/ruby/test_yield.rb
@@ -379,4 +379,15 @@ class TestRubyYieldGen < Test::Unit::TestCase
     }
   end
 
+  def test_block_with_mock
+    y = Object.new
+    def y.s(a)
+      yield(a)
+    end
+    m = Object.new
+    def m.method_missing(*a)
+      super
+    end
+    assert_equal [m, nil], y.s(m){|a,b|[a,b]}
+  end
 end