I've been developing and managing software for decades now. Starting in embedded, but doing more than embedded. Many of the mainstream software development techniques have crossover value to embedded. My mission is to spread some of those techniques to the embedded community.
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During my TDD session at the Embedded Systems Conference yesterday, I did a demo. Before the demo, I make the case for TDD as a way to prevent bugs (see Physics of TDD). For the live demo I usually code on my mac and run the tests there as well. The question always comes up: “You are running tests on your PC, can you run them on the target?” or maybe “Sure you can TDD on a PC, but what about the real hardware?” Continue reading →
Every now and then I get a new automatic update. I usually just press install. Today I browsed the release notes for the Adium IM client update (below). There are six new features, denoted with a “*”. The rest (about 30 of them) are fixes, meaning something was broken. These guys must be too busy to proactively test Adium. Test Driven Development probably would not work for them 🙂 Continue reading →
High-Low Story Showdown, Deal and Slide, Developer Guts, and Customer Guts
It’s sprint zero and you have a stack of stories needing their first estimate? You need an initial release plan. What should you do? It’s kind of hard to start on day one with Planning Poker. There is a missing baseline to estimate against. Continue reading →
Imagine you are trying to cross a mountain stream. You could make a running leap and get to the other side. Sometimes that works, other times you get wet. When there are rocks sticking out of the rushing water, you can step from rock to rock and get across the stream without getting wet. Sure there are some streams you can jump across, go ahead and jump. Other streams require a more careful approach. Continue reading →
My son is studying computer science at U of I in Chicago. He is taking an operating systems class and has to do some projects in C. (Some things change, some things stay the same.) He had an internship over the last 8-9 months and was doing TDD in Java. So he might be in the early stages of a test infection.
He has not done much C so he’s got some learning to do. I thought I better show him CppUTest. He could use it for a play ground to learn some of the subtleties of C, as well as use TDD. Continue reading →
Coupling and cohesion have been discussed for a long time as the right criteria for judging a design. But there seemed to be no objective way to determine if code exhibited those qualities. Could TDD lead to higher cohesion and loose coupling? Continue reading →
LinkedIn is fun. Every now and then a person from the past pops in. A colleague from my early days at Teradyne had just heard about agile and she asked me what it was and how to learn more. Here’s what I told her. Continue reading →