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//
// bug-4786.cs-
// NUnit Test Cases for Mono.Data.Tds.Protocol.TdsConnectionPool
//
// Author:
// Robert Wilkens <robwilkens@gmail.com>
//
// Copyright (C) 2012 Robert Wilkens (http://www.robssoftwareprojects.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
namespace MonoTests.Mono.Data.Tds
{
using NUnit.Framework;
using global::Mono.Data.Tds.Protocol;
using System;
using System.Net;
using System.Net.Sockets;
[TestFixture]
public class TdsConnectionPoolTest
{
const string SERVER="localhost";
[Test]
public void CheckNullException()
{
//set up dummy sql listener, if there is a real sql server on this
//machine at that port, in theory this part will fail, but that's ok
//becuase something will be listening on the port and that's all we
//require at this point: a listener on port 1433...
try{
IPAddress hostIP =Dns.GetHostEntry("localhost").AddressList[0];
IPEndPoint ep = new IPEndPoint(hostIP, 1433);
TcpListener Listener = new TcpListener (ep);
Listener.Start ();
} catch (Exception){
//ignore
}
//try to connect twice, in earlier failure would get null exception
//on 2nd call to pool.GetConnection();
//Most of this code ripped from sqlConnection.Open()
TdsConnectionPool pool;
TdsConnectionPoolManager sqlConnectionPools =
new TdsConnectionPoolManager(TdsVersion.tds80);
TdsConnectionInfo info=
new TdsConnectionInfo(SERVER/*dummyhost*/,1433/*port*/,
8192/*pktsize*/,15/*timeout*/,0/*minpoolsize*/,
100/*maxpoolsize*/, 0/*lifetime*/);
pool=sqlConnectionPools.GetConnectionPool("test",info);
Tds tds=null;
//this first one succeeded regardless as long as something answered
//the phone on port 1433 of localhost
tds=pool.GetConnection();
pool.ReleaseConnection(tds);
// 2nd time thru: This will fail with nullreferenceexception
// at pool.GetConnection() unless the patch by Rob Wilkens which
// adds "result=null;" before retry in pool.getConnection() source
//First let's pretend we're calling this test fresh, as if we
//call sqlConnection.Open() again :
info=new TdsConnectionInfo(SERVER/*dummyhost*/,1433/*port*/,
8192/*pktsize*/,15/*timeout*/,0/*minpoolsize*/,
100/*maxpoolsize*/, 0/*lifetime*/);
pool=sqlConnectionPools.GetConnectionPool("test",info);
//Then: Test for failure (will raise uncaught exception which
//causes failure of test if bug is not fixed
tds=pool.GetConnection();
pool.ReleaseConnection(tds);
Listener.Stop ();
//exit
}
}
}
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