Index: ruby-net-ldap/test/test_ldap_connection.rb
===================================================================
--- ruby-net-ldap.orig/test/test_ldap_connection.rb
+++ ruby-net-ldap/test/test_ldap_connection.rb
@@ -61,6 +61,7 @@ class TestLDAPConnection < Test::Unit::T
   end
 
   def test_unresponsive_host
+    flexmock(TCPSocket).should_receive(:new).and_raise(Errno::ETIMEDOUT)
     assert_raise Net::LDAP::Error do
       Net::LDAP::Connection.new(:host => 'test.mocked.com', :port => 636)
     end