Embedded software has all the challenges of “regular” software, like poor quality and unreliable schedules. It is just software with some additional challenges. The additional challenges do not disqualify TDD for embedded. TDD even helps with some of those uniquely embedded challenges.
A unit test harness’ job is to provide:
- A concise common language to express test cases
- A concise common language to express expected results
- A place to collect all the unit test cases for the project, system, or subsystem
- The facilities to run the test cases, either in full or partial batches
- A concise report of the test suite success or failure
- A detailed report of any test failures
Inspired by the Accurate Pie Chart I thought it was time to see if an accurate bar chart is also possible.
Stories often start out too big. Big stories are a challenge, and it is not always obvious how to deal with them. Its important that stories be small enough to estimate, to fit easily into an iteration and to have a decent definition of done. This article explores why some stories don’t fit this mold and what you can do about it.
Any of you people coming to Chicago for the Agile conference, here are a few of my wife’s and my recommendations for things to do in the the city. Most of these activities are within walking distance of the conference hotel.
Test Driven Development more than doubles the lines of code you have to write. With all that extra code to write, where will we ever find the time?! We have deadlines!
This is the third in my Deep Agile Embedded Panel Questions series. The question is:
We had a team doing agile. To them that included not doing any documentation. We need documentation once we go into maintenance. Is doing documentation allowed in Agile?
The short answer is yes. Agile does allow documentation. Do you think agile is a totalitarian dictator? 🙂
Prior to the Deep Agile conference, I received a number of questions about getting people to change, to try new things. Change is hard. People need to be motivated to change. “If it ain’t broke, don’t fix it” they say. But there is always some things that are broken.
First there needs to be awareness/acceptance that there are problems to solve. Do a retrospective of the last release. Find the problems that people are passionate about. Try not have blame session. Build a logic chain from the problem to some solution you think will help. Get people to sign up to try the new approach for a month or two, not the rest of their lives. Iterations give a great opportunity for this kind of experimentation.
You have to try things, rather than just talk about them. I am not sure where this quote is from, but it is profound:
“It’s easier to act your way into thinking differently than to think your way into acting differently”
Read on for some specific questions, and my answers.
Last weekend was the Deep Agile Embedded Conference that I participated in. In this article I’ll answer some of the panel questions related to concurrent hardware development. There seems to be a theme here, because the hardware is involved, an embedded development team really can’t be agile. That’s not my point of view, or my experience. I am not a hardware engineer, but I have worked near them. Let’s see some of the questions and answers.
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?”