http://www.lenholgate.com/ Len Holgate's thoughts on this and that... Mainly test driven software development in C++ on Windows platforms... - Source Code en-us Len.Holgate@JetByte.com 2008-08-12T12:44:19+00:00 hourly 1 2000-01-01T12:00+00:00 http://www.lenholgate.com/archives/000803.html Back in 2004, I wrote a series of articles called "Practical Testing" where I took a piece of complicated multi-threaded code and wrote tests for it. I then rebuild the code from scratch in a test driven development style to... Posted by Len at 12:44 PM | Comments (0) | Categories: Socket Servers , Source Code , Testing ]]> 803@http://www.lenholgate.com/ Testing 2008-08-12T12:44:19+00:00 http://www.lenholgate.com/archives/000796.html The code in the last two articles in the "Practical Testing" series have contained a considerable amount of duplication. This came about for a couple of reasons. Firstly part 17 was a bit rushed and secondly it was useful to... Posted by Len at 09:28 PM | Comments (5) | Categories: Source Code , Testing ]]> 796@http://www.lenholgate.com/ Testing 2008-08-03T21:28:14+00:00 http://www.lenholgate.com/archives/000795.html Back in 2004, I wrote a series of articles called "Practical Testing" where I took a piece of complicated multi-threaded code and wrote tests for it. I then rebuild the code from scratch in a test driven development style to... Posted by Len at 12:15 PM | Comments (0) | Categories: Source Code , Testing ]]> 795@http://www.lenholgate.com/ Testing 2008-08-02T12:15:23+00:00 http://www.lenholgate.com/archives/000773.html The comments to my last practical testing entry got me thinking. The commenter who had located the bug in part 15, which was fixed in part 16, suggested a new approach to the problem and I've been investigating it. The... Posted by Len at 06:54 PM | Comments (0) | Categories: Source Code , Testing ]]> 773@http://www.lenholgate.com/ Testing 2008-04-09T18:54:51+00:00 http://www.lenholgate.com/archives/000771.html Back in 2004, I wrote a series of articles called "Practical Testing" where I took a piece of complicated multi-threaded code and wrote tests for it. I then rebuild the code from scratch in a test driven development style to... Posted by Len at 10:28 AM | Comments (5) | Categories: Source Code , Testing ]]> 771@http://www.lenholgate.com/ Source Code 2008-04-04T10:28:39+00:00 http://www.lenholgate.com/archives/000637.html This is the latest release of the free version of my asynchronous, windows, IOCP based, socket server framework. The previous release is here. The latest release is really just a bug fix and compiler compatability release. The code now supports... Posted by Len at 08:40 AM | Comments (48) | Categories: Socket Servers , Source Code ]]> 637@http://www.lenholgate.com/ Socket Servers 2006-02-14T08:40:48+00:00 http://www.lenholgate.com/archives/000566.html Last year I wrote a series of articles called "Practical Testing" where I took a piece of complicated multi-threaded code and wrote tests for it. I then rebuild the code from scratch in a test driven development style to show... Posted by Len at 12:50 PM | Comments (2) | Categories: Source Code , Testing ]]> 566@http://www.lenholgate.com/ Testing 2005-11-01T12:50:10+00:00 http://www.lenholgate.com/archives/000412.html A long time ago, on Practical Testing: I mentioned that there was a small chance that the way that ResetTimer() operated could mean that you could pass in a handle that you no longer owned and affect someone else's timer... Posted by Len at 01:53 PM | Comments (2) | Categories: Source Code , Testing ]]> 412@http://www.lenholgate.com/ Testing 2005-03-07T13:53:04+00:00 http://www.lenholgate.com/archives/000389.html Previously, on Practical Testing: we added a multi-threaded version of our timer queue that manages timeouts automatically. This time we'll integrate our new timer queue into an application that uses the old version of the code and, along the way, discover some functionality that the original version requires but that the new version currently doesn't. Posted by Len at 08:54 AM | Comments (0) | Categories: Source Code , Testing ]]> 389@http://www.lenholgate.com/ Testing 2004-10-22T08:54:54+00:00 http://www.lenholgate.com/archives/000381.html Previously, on Practical Testing: we finished our reworking on the code we were left with a simpler timer queue that passed all of our tests, but was single threaded and needed manual intervention from client code to manage timeouts. Today we'll add back the multi-threaded functionality so that the queue manages timeouts automatically. Posted by Len at 10:51 PM | Comments (0) | Categories: Source Code , Testing ]]> 381@http://www.lenholgate.com/ Testing 2004-10-09T22:51:00+00:00 http://www.lenholgate.com/archives/000360.html Previously, on Practical Testing: having decided to rework the code from scratch in TDD style we fixed the tick count bug for the second time - this time the solution was cleaner and simpler. At the end of that episode we were left with a failing test. The test was for multiple timers and it failed because our TDD route was taking a 'simplest thing that could possibly work' approach and that design only supported a single timer. Today we'll fix that problem by moving nearer to a real world solution. Posted by Len at 01:59 PM | Comments (0) | Categories: Source Code , Testing ]]> 360@http://www.lenholgate.com/ Testing 2004-08-21T13:59:17+00:00 http://www.lenholgate.com/archives/000346.html Previously, on Practical Testing: having bolted on some tests to an existing piece of code we're now doing some "agressive refactoring" ;) and rewriting the code from scratch using the testing ideas we developed earlier. The whole point of this exercise was to fix a known bug, we did that in the existing code here, now we have a test that forces us to address the issue in the new code. Posted by Len at 08:24 AM | Comments (0) | Categories: Source Code , Testing ]]> 346@http://www.lenholgate.com/ Testing 2004-07-24T08:24:51+00:00 http://www.lenholgate.com/archives/000344.html Previously, on Practical Testing: we fought through the pain of writing tests for hard to test code and then we decided to see what it could have been like if we'd developed the code test first... Now we'll add some more tests and some more code, still keeping it all nice and simple... Posted by Len at 11:35 PM | Comments (0) | Categories: Source Code , Testing ]]> 344@http://www.lenholgate.com/ Testing 2004-07-21T23:35:40+00:00 http://www.lenholgate.com/archives/000342.html I've been writing some blog entries about a piece of code from my 'back catalogue' that didn't have tests and that had a known bug that was reasonably hard to test for. Right at the start I commented that the code was a tad over complicated due to the way it had been developed using HITIW (Hack it till it works). The complexity in the code itself made writing tests for it harder than it should have been and, well, I wouldn't write code like that these days (honest). So, here we are in part 8 and I'm about to throw the first version away and write a new version of the code and this time we'll do it test first and take a look at how the desire to be able to test the code shapes the design. I know you're probably thinking that this is just a bit contrived but I really did just sit down with an empty file and the tests that I had from last time and write the simplest thing that could work to pass the first test... Posted by Len at 09:58 PM | Comments (0) | Categories: Source Code , Testing ]]> 342@http://www.lenholgate.com/ Testing 2004-07-21T21:58:00+00:00 http://www.lenholgate.com/archives/000337.html Previously on Practical Testing: After far too much work we finally got to the point where we had a test for the tick count wrap bug. Now that we have a failing test we can fix the bug. Posted by Len at 08:45 PM | Comments (2) | Categories: Source Code , Testing ]]> 337@http://www.lenholgate.com/ Testing 2004-07-21T20:45:00+00:00 http://www.lenholgate.com/archives/000315.html Previously on Practical Testing: The last entry ended with us having two tests, both of which were in need to a good refactoring. The second test had uncovered an unexpected bug... This time around we'll refactor the tests, fix the bug and finally write the test for the tick count wrap bug... Posted by Len at 06:10 PM | Comments (0) | Categories: Source Code , Testing ]]> 315@http://www.lenholgate.com/ Testing 2004-05-25T18:10:00+00:00 http://www.lenholgate.com/archives/000311.html I'm writing some blog entries that show how to write tests for non trivial pieces of code. This is part 4. Posted by Len at 10:49 PM | Comments (5) | Categories: Source Code , Testing ]]> 311@http://www.lenholgate.com/ Testing 2004-05-19T22:49:09+00:00 http://www.lenholgate.com/archives/000310.html I'm writing some blog entries that show how to write tests for non trivial pieces of code. This is part 3. Posted by Len at 11:30 PM | Comments (0) | Categories: Source Code , Testing ]]> 310@http://www.lenholgate.com/ Testing 2004-05-18T23:30:00+00:00 http://www.lenholgate.com/archives/000308.html I'm writing some blog entries that show how to write tests for non trivial pieces of code. This is part 2. Posted by Len at 08:42 PM | Comments (0) | Categories: Source Code , Testing ]]> 308@http://www.lenholgate.com/ Testing 2004-05-17T20:42:36+00:00 http://www.lenholgate.com/archives/000307.html I'm writing some blog entries that show how to write tests for non trivial pieces of code. This is part 1. Posted by Len at 07:51 PM | Comments (2) | Categories: Source Code , Testing ]]> 307@http://www.lenholgate.com/ Testing 2004-05-17T19:51:08+00:00 http://www.lenholgate.com/archives/000102.html This morning I decided to investigate the Windows XP SP1 Bluetooth support. I played with the BluetoothXXXX API and quickly became disapointed. I then moved on to looking at how to access the Bluetooth hardware using Winsock and decided... Posted by Len at 08:34 PM | Comments (418) | Categories: Geek Speak , Source Code ]]> 102@http://www.lenholgate.com/ Geek Speak 2003-06-22T20:34:21+00:00 http://www.lenholgate.com/archives/000088.html I've updated the code for two more of the socket server articles. More merging, project file updating, and testing... [NOTE: This code leaks when adjusted to build with Visual Studio 2005. This seems to be due to a bug in... Posted by Len at 12:21 AM | Comments (49) | Categories: Socket Servers , Source Code ]]> 88@http://www.lenholgate.com/ Socket Servers 2003-06-15T00:21:09+00:00 http://www.lenholgate.com/archives/000082.html For some time I've been promising to update the socket server articles to use the latest version of my code. Today I finally updated the code for the first article. I'm going to update the article itself soon, but in... Posted by Len at 03:08 PM | Comments (102) | Categories: Socket Servers , Source Code ]]> 82@http://www.lenholgate.com/ Socket Servers 2003-06-13T15:08:06+00:00 http://www.lenholgate.com/archives/000456.html OpenSSL is an open source implementation of the SSL and TLS protocols. Unfortunately it doesn't play well with windows style asynchronous sockets. This article - previously published in Windows Developer Magazine - provides a simple connector that enables you to... Posted by Len at 01:08 PM | Comments (16) | Categories: Reprints , Source Code ]]> 456@http://www.lenholgate.com/ Reprints 2002-11-04T13:08:58+00:00 http://www.lenholgate.com/archives/000513.html Sometimes it would be nice to be able to use a simple C++ object as a sink for Connection Point notifications. This article shows you how.... Posted by Len at 01:00 AM | Comments (2) | Categories: Reprints , Source Code , Way back ]]> 513@http://www.lenholgate.com/ Reprints 2002-05-30T01:00:00+00:00 http://www.lenholgate.com/archives/000514.html This example COM component provides three COM objects for using the Win32 Mailslot IPC mechanism. The component may be useful if you need to communicate from VB using Mailslots. However, the reason I wrote it was to demonstrate creating a... Posted by Len at 01:00 AM | Comments (0) | Categories: Reprints , Source Code , Way back ]]> 514@http://www.lenholgate.com/ Reprints 2002-04-11T01:00:00+00:00 http://www.lenholgate.com/archives/000460.html A "generic" AVL Tree, from the dark days before templates... The code here is some of my first C++. Back in 1991 C++ was still pretty new. Looking back at my early C++ is better than looking back at my... Posted by Len at 11:31 AM | Comments (2) | Categories: Reprints , Source Code , Way back ]]> 460@http://www.lenholgate.com/ Reprints 2001-08-07T11:31:56+00:00 http://www.lenholgate.com/archives/000459.html In 1989 I taught myself C to write an adventure game, the code's fairly bad, but 10 year's later, the game's still quite cool!... Posted by Len at 11:25 AM | Comments (0) | Categories: Reprints , Source Code , Way back ]]> 459@http://www.lenholgate.com/ Reprints 2001-08-02T11:25:01+00:00 http://www.lenholgate.com/archives/000335.html A common way to improve the performance of Java code is to cache objects rather than repeatedly create and destroy them. This is especially true when you're writing middle tier servers that service client requests and return results objects. Implementing a flexible caching scheme in Java is relatively easy, but there are a few things to watch for. Posted by Len at 08:18 PM | Comments (5) | Categories: Reprints , Source Code , Way back ]]> 335@http://www.lenholgate.com/ Way back 2001-07-26T20:18:27+00:00 http://www.lenholgate.com/archives/000478.html When a CORBA server allows its clients to create and destroy objects one of the recommended ways to handle the object lifetime issues is using the Evictor Pattern. In The Evictor Pattern we solved the problem for C++ servers, here... Posted by Len at 01:00 AM | Comments (0) | Categories: Reprints , Source Code , Way back ]]> 478@http://www.lenholgate.com/ Reprints 2001-07-23T01:00:00+00:00