Over the years we have noticed a phenomenon where developers can become reliant on testing. This addiction is a good thing, as it leads to a much better end product being developed. As a by product we have identified 5 stages that developers go through in their test addiction.
Stage 1 : Denial or “We don’t need testing, we are shipping fine without it thanks.”
Developers in stage one are under the illusion that you can simply compile you code and then ship it. Most developers at this stage are seeking compliance with the works on my machine certification. The particularly dangerous developer at this stage is the one who takes offence when his god-like development skills are revealed as capable if causing bugs just like everybody else.
Stage 2 : Annoyance or “The ‘ Pointy-haired boss’ has hired some outside testing company”
Someone from on-high who the developers think of as a pointy haired boss has forced some testers onto the project. It may come as a surprise, but some managers aren’t stupid and don’t believe a developer who says that they are “almost finished” or “95% done”. At this stage, testers are seen as little more than an annoyance who is forcing developers to do extra work like daily builds, smoke testing and tracking bugs.
Stage 3 : Acceptance or “I suppose this isn’t a temporary thing is it?”
At the acceptance stage, the developers have accepted that this new trend of testing may actually catch on, and that it isn’t just a passing fad. Developers will now be used to looking at their issues queues in the bug tracking application, and realise that, yes, they do need to tell the test automatiors that they have renamed the login button on the home page of the application.
Stage 4 : Dependence or “I am at one with my testing brothers and sisters”
After the acceptance stage comes dependence. At this stage the developers on a project have come to rely on the feedback loop that comes from fully engaging with the testers on your team. They get their code verified BEFORE they check it in, they rely on the suite of automated tests to verify that their changes have not broken and they may even from time to time raise the odd defect themselves.
You feel guilty doing any coding without unit tests. You half consider adding tests to the changes you just made to your autoexec.bat! (Thanks Russ !)
Stage 5 : Withdrawal or “Oh my god, what do you mean you don’t have any testers?”
The withdrawal stage when a developer who is used to being at level 5, changes jobs and is plummeted back into a team at stage 1. I’m sorry, but the prognosis for this situation is not good, and the only real solution is to progress your team through all 4 stages right from the very beginning. Who knows, if you suggest it, they may think that you are beginning to sound like a pointy-haired boss.
If you want to get your team to stage 4, feel free to drop me a line.

March 21st, 2007 at 3:10 am
..additional to stage 4:
You feel guilty doing any coding without unit tests. You half consider adding tests to the changes you just made to your autoexec.bat!
May 3rd, 2007 at 2:09 pm
I try to get my company to stage 4, but thats a complicated thing to try to change the way people get used to work.. but who knows, I thing that the better metrics will drive people to believe on it.