Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/class/Mono.Data.Tds/Test/ConnLifetime.cs

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+//
+// ConnLifetime.cs
+//
+// Authors:
+//      James Lewis <james.lewis@7digital.com>
+//      Andres G. Aragoneses <andres@7digital.com>
+//
+// Copyright (C) 2012 7digital Media Ltd (http://www.7digital.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.
+//
+
+using System;
+
+using NUnit.Framework;
+
+using Mono.Data.Tds.Protocol;
+
+
+namespace Mono.Data.Tds.Tests
+{
+
+	[TestFixture]
+	public class ConnLifetime
+	{
+		[Test]
+		public void LifeTimeIsTakenInAccount ()
+		{
+			var SMALLEST_LIFETIME_TO_TEST = 1;
+			var WAIT_TO_MAKE_LIFETIME_PASSED = 2;
+
+			TdsConnectionPoolManager sqlConnectionPools = new FakeConnectionPoolManager ();
+			TdsConnectionInfo info = new TdsConnectionInfo ("dummy", 0, 0, 0,
+			                                               1 /*minpoolsize*/,
+			                                               1 /*maxpoolsize*/,
+			                                               SMALLEST_LIFETIME_TO_TEST/*lifetime*/);
+
+			TdsConnectionPool pool = sqlConnectionPools.GetConnectionPool ("test",info);
+			Mono.Data.Tds.Protocol.Tds tds, tds2 = null;
+
+			tds = pool.GetConnection();
+
+			System.Threading.Thread.Sleep (TimeSpan.FromSeconds (WAIT_TO_MAKE_LIFETIME_PASSED));
+			pool.ReleaseConnection (tds);
+
+			tds2 = pool.GetConnection ();
+
+
+			Assert.IsFalse (object.ReferenceEquals (tds, tds2));
+			pool.ReleaseConnection(tds2);
+		}
+
+		class FakeConnectionPoolManager : TdsConnectionPoolManager {
+
+			internal FakeConnectionPoolManager () : base (Mono.Data.Tds.Protocol.TdsVersion.tds90)
+			{
+			}
+
+			public override Mono.Data.Tds.Protocol.Tds CreateConnection (TdsConnectionInfo info)
+			{
+	 			return new FakeTds (info.LifeTime);
+			}
+		}
+
+		class FakeTds : Mono.Data.Tds.Protocol.Tds {
+			internal FakeTds(int lifetime) : base (null, 0, 0, 0, lifetime, Mono.Data.Tds.Protocol.TdsVersion.tds90){
+			}
+
+			public override bool Connect (TdsConnectionParameters connectionParameters)
+			{
+				throw new NotImplementedException ();
+			}
+
+			protected override void ProcessColumnInfo ()
+			{
+				throw new NotImplementedException ();
+			}
+
+			protected override void InitComm (int port, int timeout)
+			{
+				//do nothing, not relevant for the test
+			}
+
+			public override bool IsConnected {
+				get { return true; }
+				set { }
+			}
+
+			public override void Disconnect ()
+			{
+				// do nothing, not relevant for the test
+			}
+		}
+	}
+}
+

mcs/class/Mono.Data.Tds/Test/bug-4786.cs

@@ -0,0 +1,110 @@
+//
+// 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 bug4786test
+{
+	
+  using NUnit.Framework;
+  using 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{
+		Socket Listener = new Socket(AddressFamily.InterNetwork, 
+                                         SocketType.Stream,
+                                         ProtocolType.Tcp);
+		IPAddress hostIP =Dns.GetHostEntry("localhost").AddressList[0];
+        	IPEndPoint ep = new IPEndPoint(hostIP, 1433);
+		Listener.Bind(ep); 
+        	Listener.Listen(1);
+	} 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);
+
+	//exit
+    }
+  }
+}
+