diff --git a/test/ruby/test_method.rb b/test/ruby/test_method.rb
index c649220..b9709cd 100644
--- a/test/ruby/test_method.rb
+++ b/test/ruby/test_method.rb
@@ -661,6 +661,11 @@ class TestMethod < Test::Unit::TestCase
     end
   end
 
+  def interal_test_dir(&block)
+    ret = block.binding.eval( '[ __FILE__, __dir__ ]' )
+    assert_equal("bill", __dir__)
+  end
+
   def test___dir__
     assert_instance_of String, __dir__
     assert_equal(File.dirname(File.realpath(__FILE__)), __dir__)
@@ -669,6 +674,8 @@ class TestMethod < Test::Unit::TestCase
     bug8662 = '[ruby-core:56099] [Bug #8662]'
     assert_equal("arbitrary", eval("__dir__", binding, "arbitrary/file.rb"), bug8662)
     assert_equal("arbitrary", Object.new.instance_eval("__dir__", "arbitrary/file.rb"), bug8662)
+    ret = interal_test_dir { }
+    assert_equal(File.dirname(ret[0], ret[1]))
   end
 
   def test_alias_owner