diff --git a/test/hs/ConstantsDemo_Main.hs b/test/hs/ConstantsDemo_Main.hs
new file mode 100644
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--- /dev/null
+++ b/test/hs/ConstantsDemo_Main.hs
@@ -0,0 +1,68 @@
+--
+-- Licensed to the Apache Software Foundation (ASF) under one
+-- or more contributor license agreements. See the NOTICE file
+-- distributed with this work for additional information
+-- regarding copyright ownership. The ASF licenses this file
+-- to you under the Apache License, Version 2.0 (the
+-- "License"); you may not use this file except in compliance
+-- with the License. You may obtain a copy of the License at
+--
+--   http://www.apache.org/licenses/LICENSE-2.0
+--
+-- Unless required by applicable law or agreed to in writing,
+-- software distributed under the License is distributed on an
+-- "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+-- KIND, either express or implied. See the License for the
+-- specific language governing permissions and limitations
+-- under the License.
+--
+
+module Main where
+
+
+import qualified Control.Exception
+import qualified Network
+
+import Thrift.Protocol.Binary
+import Thrift.Server
+import Thrift.Transport.Handle
+
+import qualified ThriftTestUtils
+
+import qualified Yowza
+import qualified Yowza_Client as Client
+import qualified Yowza_Iface as Iface
+
+
+data YowzaHandler = YowzaHandler
+instance Iface.Yowza_Iface YowzaHandler where
+    blingity _ = do
+        ThriftTestUtils.serverLog "SERVER: Got blingity"
+        return ()
+
+    blangity _ = do
+        ThriftTestUtils.serverLog "SERVER: Got blangity"
+        return $ 31
+
+
+client :: (String, Network.PortID) -> IO ()
+client addr = do
+    to <- hOpen addr
+    let ps = (BinaryProtocol to, BinaryProtocol to)
+
+    Client.blingity ps
+
+    rv <- Client.blangity ps
+    ThriftTestUtils.clientLog $ show rv
+
+    tClose to
+
+server :: Network.PortNumber -> IO ()
+server port = do 
+    ThriftTestUtils.serverLog "Ready..."
+    (runBasicServer YowzaHandler Yowza.process port)
+    `Control.Exception.catch`
+    (\(TransportExn s _) -> error $ "FAILURE: " ++ show s)
+
+main :: IO ()
+main = ThriftTestUtils.runTest server client