diff --git a/ChangeLog b/ChangeLog
index b676671596..e5ffba802f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Fri Dec 26 14:05:13 2003  Minero Aoki  <aamine@loveruby.net>
+
+	* test/ruby/test_pack.rb: new test test_pack_N.
+
 Fri Dec 26 10:58:58 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
 
 	* MANIFEST: add vms/config.h and remove vms/config.h_in.
diff --git a/test/ruby/test_pack.rb b/test/ruby/test_pack.rb
index c7097af423..f8f9d7e746 100644
--- a/test/ruby/test_pack.rb
+++ b/test/ruby/test_pack.rb
@@ -18,4 +18,16 @@ class TestPack < Test::Unit::TestCase
     $x = [-1073741825]
     assert_equal($x, $x.pack("q").unpack("q"))
   end
+
+  def test_pack_N
+    assert_equal "\000\000\000\000", [0].pack('N')
+    assert_equal "\000\000\000\001", [1].pack('N')
+    assert_equal "\000\000\000\002", [2].pack('N')
+    assert_equal "\000\000\000\003", [3].pack('N')
+    assert_equal "\377\377\377\376", [4294967294].pack('N')
+    assert_equal "\377\377\377\377", [4294967295].pack('N')
+
+    assert_equal "\000\000\000\001\000\000\000\001", [1,1].pack('N*')
+    assert_equal "\000\000\000\001\000\000\000\001\000\000\000\001", [1,1,1].pack('N*')
+  end
 end