diff --git a/ChangeLog b/ChangeLog
index d60c6179d9..6b6855e024 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,7 +1,12 @@
+Tue Aug 26 19:27:54 2008  Akinori MUSHA  <knu@iDaemons.org>
+
+	* test/ruby/test_enum.rb (TestEnumerable#test_each_with_object):
+	  Add a test for Enumerable#each_with_object.
+
 Tue Aug 26 19:25:44 2008  Akinori MUSHA  <knu@iDaemons.org>
 
 	* test/ruby/test_enumerator.rb (TestEnumerator#test_with_object):
-	  Add (back) the test for Enumerable#with_object.
+	  Add (back) the test for Enumerator#with_object.
 
 Tue Aug 26 16:16:43 2008  NARUSE, Yui  <naruse@ruby-lang.org>
 
diff --git a/test/ruby/test_enum.rb b/test/ruby/test_enum.rb
index a739982963..ed82d7787f 100644
--- a/test/ruby/test_enum.rb
+++ b/test/ruby/test_enum.rb
@@ -196,6 +196,16 @@ class TestEnumerable < Test::Unit::TestCase
     assert_equal({"cat"=>0, "wombat"=>2, "dog"=>1}, hash)
   end
 
+  def test_each_with_object
+    obj = [0, 1]
+    ret = (1..10).each_with_object(obj) {|i, memo|
+      memo[0] += i
+      memo[1] *= i
+    }
+    assert_same(obj, ret)
+    assert_equal([55, 3628800], ret)
+  end
+
   def test_zip
     assert_equal([[1,1],[2,2],[3,3],[1,1],[2,2]], @obj.zip(@obj))
     a = []