Deployment Infrastructure for Continuous Deployment
Continuous deployment is the unification a number of best practices to create a more iterative and responsive engineering organization. Frequent, small commits reduce merge conflicts and help engineers adapt to changes in other parts of the code more quickly. Thorough automated testing ensures confidence in the codebase and allows engineers to make changes without worrying… Read more
Use a Before Method in Your Tests
When writing unit tests using the JUnit like frameworks, the mantra is to avoid any work in the class and prefer putting initialisation logic in a dedicated before method. Imagine you’re testing JSON manipulation and you have sample fixture data to work on. public class WhyUseBeforeTest { static Json.Array fixture = (Json.Array) Json.fromString(“[5,6]”); @Test public… Read more
Findbugs, Hudson and Pizza Driven Development (PDD)
As you may know kaChing (now Wealthfront) is an test driven engineering organization. Test driven is not an option, its a must. We move fast and push code to production few dozens of times a day in a five minutes release cycle, so we must have high confidence in our code. In complex systems there… Read more
Testing with Hibernate
Some of the unit tests I wrote lately involved setting up a data setup in the DB and testing the code using and mutating it. To make it clear, the DB is an in memory DB so the setup is super fast without IO slowdowns. Its very easy to do the setup using hibernate but… Read more
Sometimes you need a little help from your friends
…when the football gets stuck.