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Is Your Test Suite Brittle? Maybe It’s Too DRY

One important design principle in software development is DRY – Don’t Repeat Yourself. However, when DRY is applied to test code, it can cause the test suite to become brittle — difficult to understand, maintain, and change. In this article, I will present some indications that a test suite is brittle, guidelines to follow when reducing duplication in tests, and better ways to DRY up tests.

Kimberly Hendrick
on Apr 26, 2024
Culture & Methods

Craftleadership: Craft Your Leadership as Developers Craft Code

Learning software craftership made me reconsider how I wrote code. Being an experienced software team manager, I try to reevaluate my management practices in the same way: what could test-driven management or pair-management be? Here I propose different insights on how software craftership tools and mindset are transposable to the management domain.

Edouard Gomez-Vaëz
on Nov 22, 2022
Culture & Methods

Embracing Agile Values as a Tech and People Lead

Having worked as a software developer, the agile community has been a great source of inspiration to me to find better ways of working. In my first leadership role, I incorporated the agile mindset which helped me to get everyone working towards a joint goal: refactoring an inherited codebase for scalability, while enabling cross functional teams to work as autonomously as possible.

Milena-Mercedes May
on Feb 10, 2022
Culture & Methods

Q&A on the Book Refactoring - Second Edition

The book Refactoring - Second Edition by Martin Fowler explores how you can improve the design and quality of your code in small steps, without changing external behavior. It consists of around seventy detailed descriptions of refactorings, including a motivation for doing them, the mechanics, and an example.

Martin Fowler Ben Linders
on Jan 12, 2019
Architecture & Design

The DDD Do-Over

Jimmy Bogard had a rare opportunity to do what many developers want after finishing a tough project -- a do-over. His team worked on two very similar projects, both using DDD. He discusses the lessons learned from the first project and how the team avoided common pitfalls and was more successful on their later project.

Thomas Betts
on Sep 18, 2018
Architecture & Design

Refactoring to a Deeper Model

Paul Rayner uses a case study to demonstrate how refactoring your code can lead to a deeper understanding of your domain model. Through common code refactorings, combined with the implementation of patterns, the codebase became more cohesive and easier to reason about, reducing the time to perform some common tasks from weeks or months to just hours.

Paul Rayner
on Sep 03, 2018
Culture & Methods

Coaching Technical Practices

In the past 4-5 years I have been working as a software development coach, helping organizations around London improve their technical practices. I focus on XP practices, specifically TDD, Pair Programming, Refactoring and Simple Design. In this article I share my experiences organizing coaching sessions, including subject selection and sequencing, exercises for each subject and session formats.

Pedro Santos
on Jul 23, 2018
Architecture & Design

Managing Data in Microservices

This article provides practical examples of how to manage data in microservices, with an emphasis on migrating from a monolithic database. It is recommended to build a monolith first, and only migrate to microservices after you actually require the scaling and other benefits they provide.

Thomas Betts Randy Shoup
on Apr 16, 2018
Culture & Methods

How to Sell Refactoring? The Case of Nordea Bank AB

Refactoring is often not a technical challenge. Teams can accurately diagnose inefficient code design. If they have sufficient time and budget at their disposal, they would probably get things done. In this article, we focus on the strategic code refactoring. This distinction was introduced by the BNS IT consultants as part of the method called Natural Course of Refactoring.

Łukasz Korczyński Michał Bartyzel
on Apr 09, 2017
Java

Refactoring to Reactive - Anatomy of a JDBC migration

Reactive programming offers built-in solutions for some of the most difficult challenges in programming, including concurrency management and flow control. So you might ask - how do I get there; can I introduce it in phases? In this article we transform a legacy application to a reactive model using RxJava.

Nicolae Marasoiu
on Dec 22, 2016
Culture & Methods

Q&A with Johanna Rothman and Jutta Eckstein on Cost of Delay

The book Diving For Hidden Treasures - Uncovering the Cost of Delay in Your Project Portfolio by Johanna Rothman and Jutta Eckstein explores how projects become delayed and provides tools and methods to analyze and limit the costs of delay in projects.

Ben Linders
on Jun 16, 2016
Refactoring for Software Design Smells Review and Q&A with the Authors

Refactoring for Software Design Smells by Girish Suryanarayana, Ganesh Samarthyam, and Tushar Sharma presents a catalogue of typical software design smells and how they can be fixed.

Mirko Stocker
on Aug 15, 2015