software solutions / project leadership / agile coaching and training

Don’t cheat on those small apps!

Posted on March 31, 2009

At some point, we all have to write some small apps. I’m talking about things like…

  • Some small utility or diagnostic app
  • Something to help with your deployment process
  • Other small applications or websites (i.e. something that takes a month or less)

In these cases, we often throw good software design principles out the window. We say that we don’t need to write unit tests, we don’t need dependency injection, we can put data access code in our code-behinds, and things like that. Since it’s a small app, we think we can get away with it.

Just because your app didn’t take you long to write doesn’t mean that you get off easy. The consequences of your decisions just aren’t as severe, but that doesn’t mean that the pain is gone!

How many times have you written some small utility to help with something and then your boss sees it and really likes it, and then he asks you to add more functionality to it. Eventually you’ve spent a couple months on the app. If you cheated at the beginning, that code is going to hard to change and it’s going to start becoming more of a pain.

Maybe you’re writing a console app to help with your deployment process. Now this code better work, because if it doesn’t, your app might not deploy correctly. This is very important code! Doesn’t code this important warrant some extra attention (i.e. tests)?

Look, I’m not saying that every little app has to be this big, blown-out, enterprise application. I’m just saying that you should be careful when you cheat, because you don’t want that to come back to haunt you.

Many times you can take simple steps to make things easier to change. Take dependency injection, for example. It is really easy to set up an IoC container like StructureMap, it doesn’t overly complicate your code, and you don’t have to write tons of extra code to use it. But if you want to write tests for you code, dependency injection will make it a lot easier. You’re just putting code in better places.

Again, there are times to use dependency injection and there are times where it’s superfluous. There are times when unit testing is essential and times when you can get away with it (personally I always like writing tests if I can, that way I know my code works). But you need to be careful. Software is software, and many of the same development principles that apply to big apps still apply to small apps.

3 Comments »

  1. Don’t cheat on those small apps!…

    You’ve been kicked (a good thing) – Trackback from DotNetKicks.com…

    DotNetKicks.com — March 31, 2009 @ 6:19 pm

  2. Don’t cheat on those small apps…

    Thank you for submitting this cool story – Trackback from DotNetShoutout…

    DotNetShoutout — March 31, 2009 @ 6:21 pm

  3. Nice blog…

    Jones — April 28, 2009 @ 5:42 pm

Leave a comment





SERVICES
SOFTWARE SOLUTIONS
I have over 10 years of software development experience on several different platforms (mostly Ruby and .NET). I recognize that software is expensive, so I'm always trying to find ways to speed up the software development process, but at the same time remembering that high quality is essential to building software that stands the test of time.
PROJECT LEADERSHIP
I have experience leading and architecting large Agile software projects and coordinating all aspects of a project's lifecycle. Whether you're looking for technical expertise or someone to lead all aspects of an Agile project, I have proven experience from multiple projects in different environments that can help make your project a success.
AGILE COACHING
I believe that Agile processes and tools should be applied with common sense. I've spent the last 6 years working on Agile projects as a consultant in many different environments, both in leadership roles and as a practitioner doing the work. I can help you find out how Agile can work best in your organization, not just apply a prescriptive process.
TEST DRIVEN DEVELOPMENT TRAINING
TDD Boot Camp is a hands-on, three day, comprehensive training course that will teach you all of the skills, tools, frameworks that you will need to use test-driven development to develop real world .NET applications. If you're not looking for something that intensive, check out the the half-day version.
Have any questions? Contact me for more information.
PRESENTATIONS
The Business of You: 10 Steps For Running Your Career Like a Business
From CONDG 2012, Stir Trek 2014
From Stir Trek 2013, DogFoodCon 2013
From Stir Trek 2012, QA or the Highway 2014
(presented with Brandon Childers, Chris Hoover, Laurel Odronic, and Lan Bloch from IGS Energy) from Path to Agility 2012
(presented with Paul Bahler and Kevin Chivington from IGS Energy)
From CodeMash 2011
An idea of how to make JavaScript testable, presented at Stir Trek 2011. The world of JavaScript frameworks has changed greatly since then, but I still agree with the concepts.
A description of how test-driven development works along with some hands-on examples.
From CodeMash 2010
From CodeMash 2010